4740 results about "Circulating pump" patented technology

The invention relates to an ice crystal evaporator and an ice crystal water cooling device producing from the same, belonging to the technical field of refrigeration. The ice crystal evaporator is characterized in that a liquid inlet channel is formed by an evaporator tube, a liquid inlet and a liquid outlet in a tubular casing; and the outer channel of the evaporator tube of the tubular casing is divided into more than one S-shaped channel forming a water return channel through a water inlet of a water divider and a water outlet of a water collector. The ice crystal water cooling device is characterized in that the return air inlet of the ice crystal evaporator is communicated with a compressor, a condenser, a liquid feeding valve, a dry filter, a liquid feeding electromagnetic valve anda thermostatic expansion valve in sequence, and then is communicated with the liquid inlet of the ice crystal evaporator; a cooling water inlet / outlet of the condenser is connected with a cooling tower in series; and a water inlet / outlet of the ice crystal evaporator is communicated with a water circulating pump and an ice crystal energy storage tank in series. The invention has the advantages ofhigh cooling efficiency, no icing and low cooling temperature and is suitable for production of energy storage central air-conditioning, marine fishing, seafood processing, fruit, vegetable or meat processing, and the like; the cooled medium is municipal water.

The invention discloses a pressing device and method for corrugated plate welding. The pressing device comprises a first clamping mechanism, a second clamping mechanism, a pressing supporting mechanism, a connecting supporting rod, a corrugated plate pressing mechanism and a temperature adjusting mechanism. The temperature adjusting mechanism comprises a heat conduction top pressing plate assembly, a temperature detection assembly, a heat conduction pipe assembly, a cooling liquid storage box, a cooling liquid circulating pump and a heat dissipation assembly. According to the pressing method, the first clamping mechanism and the second clamping mechanism clamp adjacent wave crest nodes of the corrugated plate correspondingly, and the heat conduction top pressing plate assembly is tightly attached to the surface of the side edge of a welding seam; and when the temperature reaches the upper limit, the cooling liquid circulating pump conveys cooling liquid for cooling, and when the temperature is reduced to the lower limit, the cooling liquid circulating pump and the heat dissipation assembly are shut down. And the risk of local deformation caused by heat input can be reduced through active temperature control, so that the forming quality of lap welding of the corrugated plates is improved.

The invention discloses a low-energy-consumption nitrogen-charging grain storage system and method, and relates to the field of nitrogen-charging grain storage. The method comprises the steps that compressed air is sequentially introduced into a filter set, a drying machine and a micro-oil adsorber to be purified and dried; stripping oxygen O2 molecules and water H2O molecules in the air by using a carbon molecular sieve pressure swing adsorption tower to obtain nitrogen N2 molecular gas; inputting nitrogen N2 molecular gas into a cold drying system, and cooling to a preset temperature range; detecting whether the concentration of the output nitrogen N2 molecular gas meets a preset concentration range or not by using an oxygen analyzer; and when the detected N2 molecular gas concentration of the nitrogen is lower than the lower limit of the preset concentration range, starting a circulating pump to suck the mixed gas in the closed warehouse to the carbon molecular sieve pressure swing adsorption tower for adsorption and nitrogen production again until the N2 molecular gas concentration of the output nitrogen meets the preset concentration range. Aiming at the problem that the nitrogen concentration in nitrogen-filled grain storage is difficult to accurately control in the prior art, accurate control of the nitrogen concentration and yield is realized.

The invention relates to the technical field of dust removal and desulfurization equipment, and discloses environment-friendly dust removal and desulfurization equipment which comprises an outer barrel, and a separation barrel is fixedly mounted at the bottom end of the interior of the outer barrel. According to the environment-friendly dust removal and desulfurization equipment, the separation barrel is arranged at the bottom end of the interior of the outer barrel, and the interior of the outer barrel is divided into an inner part and an outer part through the separation barrel; the interior is an impurity separation and collection area, the exterior is a clean circulating liquid flowing area, a stirring wheel at the bottom rotates to drive liquid and impurities to rotate together to generate centrifugal force, and under the action of the centrifugal force, the liquid and the impurities in the interior are driven to rotate together and are attached to the interior of a filtering ring net on the side face; in this way, impurities are separated out, liquid can flow to the outside of the separation barrel through the filtering ring net to be used for follow-up circular flow, the cleanliness of the recycled liquid can be improved, and the service life of the circulating pump can be prolonged.

The invention discloses a high-reliability planetary gearbox signal denoising method, system, medium and equipment, and the method comprises the steps: obtaining original vibration signals of a nuclear power circulating pump planetary gearbox in different health states, and carrying out the detrending and demean preprocessing of the signals; performing modal decomposition on the original vibration signal by adopting an empirical mode decomposition (EMD) algorithm, an ensemble empirical mode decomposition (EEMD) algorithm and a variational mode decomposition (VMD) algorithm to obtain a plurality of different modal components; iteratively optimizing a hyper-parameter value in the variational mode decomposition algorithm VMD by adopting a sparrow search algorithm SSA so as to realize the self-adaptive decomposition of the variational mode decomposition algorithm VMD on the signal; and carrying out modal decomposition on the gearbox vibration signal by adopting a variational modal decomposition algorithm VMD after iterative optimization, removing noise components in modal components, and reconstructing the signal to realize gearbox vibration signal denoising.

The embodiment of the invention provides a heat conduction oil heating temperature control system and method. The system comprises a first detection module, a temperature control module, a circulating pump, a waste heat recovery module, a plurality of segmented heat conduction oil pipelines, heating modules corresponding to the heat conduction oil pipelines and a second detection module. The first detection module sends the environment temperature to the temperature control module; the temperature control module calculates the initial heating power corresponding to each heat-conducting oil pipeline, contains the initial heating power in a heating instruction and sends the heating instruction to the corresponding heating module; the circulating pump drives the heat-conducting oil to each heat-conducting oil pipeline; the heating module heats the heat utilization equipment according to the initial heating power; the second detection module sends the heating temperature of the conduction oil pipeline corresponding to the current time period to the temperature control module; the waste heat recovery module calculates the waste heat utilization rate and sends to the temperature control module; and the temperature control module calculates to-be-adjusted heating power required by the next time period, contains the to-be-adjusted heating power in a heating instruction and sends the heating instruction to the corresponding heating module for subsequent heating temperature control, so that the heating temperature control precision of the heat-conducting oil is improved, and the energy consumption is reduced.

The invention belongs to the technical field of textile dyeing, and particularly relates to a yarn zero-chromatic-aberration star cage dyeing device and a dyeing process adopting the same. Comprising a dyeing machine main cylinder, a star cage dyeing device is detachably arranged in the dyeing machine main cylinder, the star cage dyeing device comprises a star cage cover, a star cage yarn bundle frame base is arranged at the bottom of the star cage cover, a star pipe is vertically arranged in the star cage cover, the star pipe penetrates through the star cage yarn bundle frame base to be correspondingly connected with the upper end of a circulation pipeline below the dyeing machine main cylinder, and a yarn bundle grate is arranged in the star cage cover. The yarn beam grate penetrates through the star tube and is arranged on the star cage yarn beam frame seat, a center rod is arranged at the top of the star tube, and the center rod is connected with a compression sealing device; the circulating pipeline is connected with the heater, the circulating pump and the motor; and the dyeing machine main cylinder is connected with the circulating pump through a liquid outlet pipe. According to the method, the thinking inertia of cheese dyeing in the industry is broken through, bobbin-free yarn bundle dyeing is adopted, the effect of no color difference of the yarn is achieved under the condition that sufficient color brightness and depth are guaranteed, production operation is easy, the dyeing efficiency is high, and the first-pass yield of dyeing is high.

The utility model discloses reaction equipment with high crude methyl ester yield, which comprises a stirring kettle and a material circulating system, the material circulating system comprises a circulating pump, a spray pipe arranged in the stirring kettle and a mixing nozzle arranged on the spray pipe, and a bottom outlet of the stirring kettle is connected with a feed port of the circulating pump through a first pipeline. An outlet of the circulating pump is connected with the spray pipe through a second pipeline; the mixing nozzle comprises a first sprayer and a second sprayer, and an outer flaring in the lower portion of the second sprayer is in clearance fit with the conical head through a connecting piece. The material circulating system can realize bottom-out and top-in of materials, so that the mixing of an oil phase and an enzyme water phase is promoted through the reciprocating circulation. In addition, the material circulating system is provided with a plurality of mixing nozzles, the flow speed of spraying of the first spray head is large, so that a negative pressure suction gap is formed at the joint of the second spray head and the first spray head, materials in the stirring kettle can enter the mixing nozzles under the action of negative pressure, an oil phase and an enzyme water phase are intensively mixed, and the yield of fatty acid methyl ester is improved.

Aspect of the disclosure provides a method of pumping a liquid material. The method may include pumping the liquid material by rotating an impeller attached to a shaft assembly. The pump includes the impeller, the shaft assembly, and a pump chamber. The method includes controlling the minimum pressure of the liquid material in the pump chamber to be above a threshold pressure by controlling a pressure of a gas that is supplied to the pump chamber. The shaft assembly includes a first shaft and a second shaft that are separated by a gap and are physically coupled by a coupling component.

The invention relates to a liquid air energy storage and terrestrial heat coordinated underground space air regulation and control system and method. Comprising a first-stage compressor, a second-stage compressor, a third-stage compressor, an expansion refrigerator, a first-stage compression heat exchanger, a second-stage compression heat exchanger, a third-stage compression heat exchanger, a cold box, a separator, a liquid air storage tank, a cryogenic pump, an evaporator, a cold storage circulating pump, a cold storage box, a compression heat exchange circulating pump, a compression heat storage box, a first heater, a second heater and a third heater. The system comprises a first air expander, a second air expander, a third air expander and a generator. The regeneration heater is used for guiding the compression heat generated by the compressor into the regeneration heater for regeneration and / or guiding the geothermal energy output by the geothermal energy output end into the regeneration heater for regeneration; the rotary wheel dehumidification device is used for performing cryogenic drying on the wet air; the fresh air processing unit is composed of a fresh air filter, a regeneration fan, a regeneration filter and an air supply fan.

The utility model relates to the technical field of biodegradable materials, and discloses an extruder cooling device for production of biodegradable material products, which comprises an extrusion pipe, a circulating cooling part, a liquid inlet pipe, a liquid outlet pipe, a water tank, a circulating pump, a filling port and a cooling-water machine, the liquid inlet pipe flange is connected to one end of the circulating cooling piece, the liquid outlet pipe flange is connected to the other end of the circulating cooling piece, the water tank is arranged at the other end of the liquid outlet pipe, the circulating pump is fixedly connected to the top of the water tank, and the other end of the liquid inlet pipe is connected with a top flange of the circulating pump. According to the extruder cooling device for producing the biodegradable material products, the cooling pipes are uniformly distributed outside the extrusion pipe, so that cooling liquid is input into the cooling pipes through the water distribution pipes to ensure uniform cooling of the extrusion pipe, the cooling effects of all positions of the extrusion pipe are consistent, and the condition of non-uniform cooling is avoided.

The utility model discloses a coal gas purification tower device and relates to the technical field of purification treatment equipment. A water tank is arranged at the bottom end of the tower body, the water tank is communicated with the tower body, a filter screen is arranged between the water tank and the tower body, a circulating pump is mounted on the water tank, the water inlet end of the circulating pump is connected into the water tank through a pipeline, a steel water conveying pipe is mounted in the tower body through a bearing, and spray heads are distributed on the steel water conveying pipe; according to the coal gas purification tower device, a two-layer water distribution mode is adopted, rotary spraying is arranged, the spraying pipe automatically rotates in the water spraying process, water mist can be uniformly sprayed into the tower body, the spraying range can be expanded, all-directional coverage is achieved, spraying is free of dead angles, the contact area between gas and liquid is increased, the mass transfer efficiency is further improved, and the gas purification tower device is suitable for large-scale popularization and application. The purification efficiency of equipment can be improved, meanwhile, a cleaning liquid real-time circulating filtering system is arranged, the utilization efficiency of liquid is improved, the working efficiency is high, and the performance is stable and reliable.

The invention discloses a boiler flue gas desulfurization and denitrification device, and relates to the technical field of boiler flue gas treatment.The boiler flue gas desulfurization and denitrification device comprises a tower body, a filler layer is fixedly installed at the top of the tower body, a tower top is fixedly installed at the top of the filler layer, a water tank is fixedly installed on the outer side of the tower body, and a circulating pump is arranged on the water tank; a spraying device is arranged on the water tank, the output end of the circulating pump is connected with the spraying device through a pipeline, a plurality of water spraying openings are formed in the tower top, and the water spraying openings are all communicated with the output end of the spraying device; wherein a stirring device for stirring the filler is arranged on the filler layer, and the flue gas is quickly dispersed, so that the primary desulfurization and denitrification effect is improved, activated carbon particles are continuously stirred, the particles are prevented from caking, full contact between the particles and the flue gas is guaranteed, the reaction time is prolonged, and the desulfurization and denitrification efficiency is improved.

The invention relates to the technical field of transformers, and particularly discloses a rectifier transformer which comprises a transformer body and a diversion assembly, a plurality of cooling fins are arranged on the side wall of the transformer body, insulating oil is filled in the transformer body, the cooling fins are of hollow structures, the interiors of the cooling fins are communicated with the transformer body, and the diversion assembly is arranged in the transformer body. A flow guide assembly is arranged in each heat dissipation fin, each flow guide assembly comprises a flow guide plate and a flow guide blade, the flow guide plates are arranged in the heat dissipation fins in a sliding fit mode, a driving mechanism is arranged in the transformer, and the driving mechanism is used for driving the flow guide plates to move in the heat dissipation fins in a reciprocating mode. The flow guide plate divides the heat dissipation fins into a first cavity and a second cavity, the flow guide blades are arranged on the two sides of the flow guide plate, and the flow guide blades are in running fit with the flow guide plate; according to the rectifier transformer, insulating oil can flow between the transformer body and the cooling fins without a circulating pump, and maintenance is easy.

The invention relates to the technical field of chemical engineering, in particular to a simple and safe ammonia residual gas recovery system which comprises a liquid ammonia storage tank (1), an accident ammonia absorption tower (2), a circulating pump set, a gas phase pipeline and a liquid phase pipeline, the circulating pump set comprises a circulating water pump, a compression pump and a waste heat recovery pump, the waste heat recovery pump is connected with a steam valve, and the liquid ammonia storage tank (1) is connected with a gasifier (11). The vaporizer (11) is connected with the buffer tank (12), the buffer tank (12) and the accident ammonia absorption tower (2) circulate pure ammonia gas through a gas phase pipeline, the accident ammonia absorption tower (2) and the liquid ammonia storage tank (1) circulate pure liquid ammonia through a liquid phase pipeline, the absorption tank (21) adsorbs exhaust gas detected by the accident ammonia absorption tower (2), and recovered nitrogen is used for purging the liquid ammonia storage tank (1), so that escape-free environment-friendly treatment and recycling of ammonia are realized.

The utility model discloses a novel sealing element for a hydrogen circulating pump, which belongs to the technical field of hydrogen circulating pumps and comprises a shell, lip sides of a gas side sealing lip and an oil side sealing lip respectively extend out of a metal framework, and the lip sides of the gas side sealing lip and the oil side sealing lip simultaneously hold the cylindrical surface of a rotating shaft. Supporting assemblies are arranged between the lip edge of the oil side sealing lip and the metal framework and between the lip edge of the gas side sealing lip and the metal framework. According to the utility model, the lip edges of the gas side sealing lip and the oil side sealing lip simultaneously hold the cylindrical surface of the rotating shaft of the hydrogen circulating pump for sealing, so as to prevent hydrogen from leaking into a gear chamber and prevent lubricating oil in the gear chamber from leaking into the hydrogen chamber; and meanwhile, through the two supporting assemblies, the attaching contact tightness of the lip edge of the oil side sealing lip, the lip edge of the gas side sealing lip and the cylindrical surface of the rotating shaft is further improved, so that the hydrogen side and the lubricating oil side of the hydrogen circulating pump are each provided with a multi-layer composite sealing structure, and the hydrogen side and the oil side are well separated all the time.

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 mineral separation magnetic separator for muddy tungsten polymetallic ore and a recovery system for recovering black tungsten, and relates to the technical field of mineral separation of the muddy tungsten polymetallic ore. The blending box is used for blending raw material ore pulp with the concentration of 30%; the bottom of the blending box is transmitted to the permanent magnet separator through a transmission pump connecting pipeline, and a return pipeline I and a circulating pump I are mounted on the permanent magnet separator; magnetically separating the raw ore pulp by a permanent magnetic separator to obtain weak magnetic concentrate pulp; the bottom of the permanent magnetic separator is provided with a transmission pipeline and connected with the high-intensity magnetic separator, and the transmission pipeline is connected with a transmission pump; the concentrate thickener is used for blending and concentrating to obtain concentrated ore pulp with the concentration of 25-35%; a centrifugal concentrator; a return pipeline II and a circulating pump II are arranged on the centrifugal separator, and the number of cycles is three; and the frequencies of the centrifugal separator are respectively 50HZ, 40HZ and 30HZ. The technical problems that argillization tungsten ore cannot be recycled, and materials with proper tungsten concentration cannot be selected through magnetic separation and gravity separation, and the recycling difficulty is large are solved.

The utility model provides a vacuum etching device and a vacuum developing, etching and film removing production line, and the vacuum etching device comprises a rack, a conveying roller assembly for conveying workpieces along the longitudinal direction, a liquid storage tank, a liquid conveying assembly, a spraying assembly, a circulating pump, a circulating pipe, a vacuum generator and a plurality of vacuum suction knife assemblies, a water curtain sealing assembly for spraying a water curtain to a workpiece is arranged at an inlet and / or an outlet of a sealing cavity of the rack, the spraying assembly comprises a plurality of spraying pipes and a plurality of nozzles, the extending direction of the spraying pipes intersects with the longitudinal direction, and nozzle sets extending in the transverse direction are formed on the spraying pipes. The two ends of the circulating pipe are communicated with the liquid storage tank, the circulating pump and the vacuum generator are both arranged on the circulating pipe, the vacuum suction end of the vacuum generator is communicated with the vacuum suction knife assemblies, each row of nozzle sets correspond to one vacuum suction knife assembly, and the vacuum suction knife assemblies are arranged on the upstream of the corresponding nozzle sets in the longitudinal direction. According to the utility model, the spraying uniformity is good, and the etching liquid can be ensured to be fully contacted with the printed circuit board, so that the etching quality is improved.

The invention provides a waste steam source high-temperature steam heat pump testing system based on heat energy cyclic utilization, and belongs to the field of compression heat pumps. The invention aims to solve the problems of unstable heat supply in a high-temperature lift, low energy efficiency of an evaporation end, poor temperature control effect of a low-level heat source side and limited thermal control means of an experimental platform. The system comprises a condenser, an expansion valve, a liquid storage tank, an evaporator, a compressor, a water spraying cooling tank, a steam pressure reducing valve, a circulating pump and a regulating valve, or a water mixing cooling tank and a heat supply liquid storage tank are additionally arranged, so that the dynamic balance and control of the temperature of the hot end of the system are realized; or a steam pressure reducing valve is replaced by a steam-water heat exchanger, so that heat exchange is carried out on condensed steam and working medium water to realize mild cooling, and redundant energy consumption is avoided; or a bypass adjustable shunting loop is arranged, so that partial high-temperature backwater bypass mixing is realized, and the thermal matching property and the operation stability of the system are enhanced. According to the invention, the output temperature of over 100 DEG C is realized, and the universality and debugging flexibility of experimental system design are realized.

The utility model discloses a switchable waterway structure for testing a circulating pump, which is characterized by comprising a base frame, and a first testing waterway, a second testing waterway, a third testing waterway and an output pipe which are arranged on the base frame, the first test water path, the second test water path and the third test water path are arranged in an S-shaped circuitous coil pipe structure; a first bypass pipe and a first control valve are arranged between the tail end of the first test water path and the output pipe; a second bypass pipe and a second control valve are arranged between the second test water path and the output pipe; and a third control valve is arranged between the tail end of the third test water path and the output pipe. According to the utility model, the installation station of the circulating pump does not need to be changed, and only the conduction state of the control valve is switched on the waterway test frame, so that the drawing force test under various waterway length simulation working conditions can be quickly carried out, the arrangement space of a test platform is greatly reduced, and the test efficiency is effectively improved.

The invention discloses an air-water cooler for a wind driven generator, which belongs to a cooling device in the field of electrical technology and comprises a heat exchanger mounted outside a cabin of a wind turbine generator and a water jacket mounted on the outer side of the generator, the water jacket is connected with the heat exchanger through a circulating pipe to form a circulating loop, and a propeller is rotatably mounted in the circulating pipe. The propeller is in transmission connection with a rotating shaft of the generator; the rotating shaft is driven to drive the propeller to rotate so as to realize closed-loop circulation of cooling liquid in the circulating pipe; according to the air-water cooler provided by the invention, the propeller arranged in the circulating pipe is in transmission connection with the rotating shaft of the generator, and circulation of the cooling liquid can be realized by driving the propeller to rotate through the rotating shaft without depending on a circulating pump, so that in the rotating process of rotating blades of a wind turbine generator, the cooling liquid is cooled; and the cooling liquid is always in a circulating state and continuously dissipates heat of the generator.

The invention relates to the technical field of sealing test, in particular to a sealed cabin heating system for high-temperature rotary dynamic sealing test and a test device. The device comprises a sealed cabin, a circulating pipeline is connected between a liquid inlet and a liquid outlet of the sealed cabin, and a circulating pump and a heater are mounted on the circulating pipeline; a high-level tank is further connected to the circulating pipeline so as to supplement liquid into the circulating pipeline when the liquid in the circulating pipeline is lost; the circulation pipeline or the sealed cabin is connected with a pressure relief pipeline, and a sealing valve is installed on the pressure relief pipeline. According to the invention, the burden and energy consumption of the heater are reduced, and the method also has the advantages of high medium temperature rise rate, short regulation time efficiency and high precision.

The invention relates to the technical field of aircrafts, in particular to a turbine engine pre-cooling system and an aircraft. The turbine engine precooling system comprises a propulsion channel, a precooler, an air turbine, a radiator, a circulating pump and an engine. The precooler is located on the side, close to the air inlet, of the engine. The precooler is provided with a first heat exchange medium channel and an air channel; the radiator is arranged on the outer side of the propelling channel and provided with a second heat exchange medium channel and a fuel channel, and the second heat exchange medium channel communicates with the first heat exchange medium channel; the air turbine is arranged in a hollow channel in the center of the precooler, and the air inlet direction of the air turbine is parallel to the extending direction of the air channel. The circulating pump is arranged on the radiator and connected with the air turbine so as to drive the heat exchange medium to circularly flow between the first heat exchange medium channel and the second heat exchange medium channel; and a valve is arranged at an exhaust port of the air turbine, so that the heat exchange efficiency and the working condition adaptability are improved.

The invention discloses a natural gas desulfurization process and belongs to the technical field of gas desulfurization, fluid in a regeneration tower overflows into a barren liquor tank and then is fed into an absorption tower through a circulating pump, fluid in the absorption tower is conveyed to the downstream regeneration tower in an overflow mode, and a buoyancy valve and a differential pressure self-operated valve are arranged on an overflow pipeline of the absorption tower. The buoyancy valve is used for controlling opening and closing of the overflow channel, a valve element of the buoyancy valve ascends and descends along with liquid level ascending and descending, and therefore the size of the overflow channel is adjusted. The differential pressure self-operated valve is used for controlling the differential pressure of the inlet and outlet of the buoyancy valve, and closing the downstream channel of the buoyancy valve after the differential pressure is greater than a preset value to avoid continuous increase of the differential pressure, so that the buoyancy valve can move upwards to increase the rich liquid flow after the liquid level in the absorption tower rises. The liquid level is controlled through cooperation of the buoyancy valve and the differential pressure self-operated valve, the whole control mechanism can achieve autonomous control, and the unattended requirement is completely met, so that personnel for monitoring the liquid level on site is not needed, only regular inspection is needed, and the operation cost is saved.

The utility model discloses a waste heat recycling system of a drying and cooling machine, which is characterized in that a first-layer hot air outlet of the drying and cooling machine is connected with an air inlet of a dust removal cyclone dust collector, and a top air outlet of the dust removal cyclone dust collector is connected with a plate-type layer hot air inlet of an air-air heat exchanger; a plate layer hot air inlet of the air-air heat exchanger is connected with a shell pass hot air inlet of the air-water heat exchanger, and a shell pass tail gas outlet of the air-water heat exchanger is connected with a tail gas discharge pipe through an induced draft fan; an air outlet of the air blower is connected with a shell pass air inlet of the air-air heat exchanger; a shell pass air outlet of the air-air heat exchanger is connected with a first-layer hot air inlet of the drying cooler; a water outlet of the hot water tank is connected with a plate-type layer hot water inlet of the air-water heat exchanger through a hot water circulating pump, a plate-type layer hot water outlet of the air-water heat exchanger is connected with a water inlet of a plate-type hot water heat exchange layer of the conditioning tower, and a water outlet of the plate-type hot water heat exchange layer is connected with a water inlet of the hot water tank. The system fully recovers waste heat of the drying cooler, and is low in investment cost and good in comprehensive economic benefit.

The utility model relates to a feed cooling device which comprises a supporting rod, a cooling tank, a feeding pipe and a discharging pipe, a stirring assembly used for stirring feed is installed on the cooling tank, the stirring assembly comprises a motor, a vertical rod and a stirring plate, and a cooling assembly used for cooling the feed is installed on the cooling tank. The cooling assembly comprises a liquid storage tank, a cooling pipe, a circulating pump and a refrigerator, the cooling pipe penetrates through the shell and surrounds the stirring plate, and the lower end of the cooling pipe is fixed and communicated with a water outlet of the circulating pump. Cooling liquid in the liquid storage tank is pumped into the cooling pipe through the circulating pump and circulates, the cooling liquid in the cooling pipe is cooled through the refrigerator, so that the feed is cooled through the cooling pipe, then the stirring plate is driven by the motor to stir the feed, the feed in the cooling tank is made to make uniform contact with the cooling pipe, and the cooling effect is improved. And the cooling efficiency and the cooling effect of the feed are improved.

The utility model relates to the technical field of arsenic oxide crystallization, in particular to an arsenic oxide cooling crystallization liquid inlet device, which comprises a crystallization kettle, a guide plate, a diversion barrel and a circulating pump, a mounting hole is formed in the middle of the guide plate, a hollow sleeve is fixedly connected in the mounting hole, and the top of the hollow sleeve is fixedly connected with an upper cover of the crystallization kettle. The flow guide plate plays a role in dispersing water flow, the flow dividing barrel is fixedly connected to an upper cover of the crystallization kettle, and an inner cavity of the flow dividing barrel is fixedly communicated with flow dividing pipelines arranged in a circumferential array. Through the cooperative design of a flow guide plate, a flow dividing barrel, a flow dividing pipeline and a circulating pump, an arsenic solution in a crystallization kettle can be pumped by the circulating pump and conveyed into the flow dividing barrel, the arsenic solution flows out in a water flow column state through the flow dividing barrel, and under interception of the flow guide plate, the water flow column is scattered into a water curtain; and the water curtain is sprayed on the inner wall of the crystallization kettle and flows down from the inner wall for rapid cooling, so that the cold and heat transfer effect is good and the crystallization process of the arsenic solution is accelerated through a circulating cooling mode.

The invention discloses an ultralow-temperature high-pressure environment material mechanical property test system and method, the test system comprises a medium circulation system and a cold source supply system, the medium circulation system comprises a heat exchanger tube pass, a circulation pump and a test box, the heat exchanger tube pass, the circulation pump and the test box are connected in sequence, and a medium outlet of the test box is connected with a blow-down pipe; the cold source supply system comprises a heat exchanger shell pass, a first valve bank, a second valve bank, a gas-liquid mixer, a liquefied gas pump, a normal-temperature gas storage tank and a first liquefied gas storage tank, the heat exchanger shell pass accommodates the heat exchanger tube pass, an outlet of the first liquefied gas storage tank is connected to the first valve bank and the liquefied gas pump, and the liquefied gas pump is connected to the second valve bank. The first valve group and the second valve group are both connected to an inlet of the gas-liquid mixer, the second valve group is further connected to a pipeline where the circulating pump is located, an outlet of the gas-liquid mixer is connected to one end of the heat exchanger shell side, and the other end of the heat exchanger shell side is connected to the blow-down pipe through a discharge pipeline.

The invention relates to the technical field of automobile brake fluid production, and discloses an automobile brake fluid production stirring device which comprises a vibration crushing mechanism, a circulation backflow mechanism is arranged on the surface of the vibration crushing mechanism, and a stirring storage mechanism is arranged on the surface of the circulation backflow mechanism. A vibration driving mechanism is arranged at the top of the stirring and storing mechanism, and a stirring and mixing mechanism is arranged between the vibration driving mechanism and the stirring and storing mechanism. According to the stirring device for producing the automobile brake fluid, through the arrangement of the vibration crushing mechanism, the circulating reflux mechanism, the stirring storage mechanism, the vibration driving mechanism and the stirring mixing mechanism, materials below can be continuously and circularly pumped upwards through the circulating reflux mechanism during use, and continuous vibration is generated through the vibration crushing mechanism; and the clotted raw materials are crushed and mixed through vibration of the vibration crushing mechanism, so that the material mixing uniformity is improved.