193results about How to "Extended flow path" patented technology

The invention relates to the technical field of extremely-low-temperature refrigeration equipment, and provides an annular heat exchange unit which comprises a flow channel box, and the two ends of the flow channel box are covered with an upper cover body and a lower cover body correspondingly; a cavity partition plate is arranged in the runner box to form an upper heat exchange cavity and a lower heat exchange cavity; two upper runners which are not communicated with each other are arranged in the upper heat exchange chamber; two lower runners which are not communicated with each other are arranged in the lower heat exchange chamber; the adjacent flow channel partition plates in the two cavities are arranged in a staggered mode to form a transition flow channel. The annular heat exchange unit further comprises two circulating pipe sets. Therefore, the two heat exchange channels which are not communicated with each other and are arranged up and down are formed in the runner box; media in the two heat exchange channels do not make contact with each other, and heat exchange is achieved through the flow channel partition plate in the flowing process. On the premise that the overall size of the runner box is not increased, two heat exchange channels which are arranged in an up-down staggered mode are formed in the runner box. The heat exchange efficiency is improved, and the space is saved. The invention provides a multi-stage heat exchanger and a dilution refrigerator.

The invention relates to a water inlet separation net, a reverse osmosis membrane unit, a reverse osmosis membrane element, a filter element and a filter system in the technical field of reverse osmosis membranes. The reverse osmosis membrane unit comprises a water inlet separation net body and a reverse osmosis membrane attached to the reverse osmosis membrane element; the water inlet separation net body is provided with water blocking parts which are arranged at intervals and in a staggered mode in the extending direction of the water inlet separation net body, so that the water inlet separation net forms a water diversion flow channel which is continuously bent; and the distance between every two adjacent water blocking parts is reduced in sequence. The water diversion flow channel is designed to be bent, and the distance between every two adjacent water blocking parts is sequentially reduced, so that the flow speed of raw water is gradually increased, on the basis that the water diversion flow channel is designed to be relatively long, the flow speed of the raw water can be maintained to be gradually increased, the raw water spirally flows in the water diversion flow channel, and the flow area of the raw water is gradually reduced; the shear flow velocity of the concentrated water end is improved, and concentration polarization caused by poor water quality of the concentrated water end is weakened, so that the reverse osmosis membrane can more effectively resist pollution and blockage.

The invention discloses coconut juice processing equipment, and particularly relates to the technical field of coconut juice processing, and the coconut juice processing equipment comprises a processing equipment body and a material mixing assembly; the processing equipment body comprises a barrel body; the material mixing assembly is arranged on the barrel body; the mixing assembly comprises a U-shaped bracket, a fixed seat, a servo motor, a transmission shaft, a movable groove, a movable ball, a transmission rod, a connecting rod and a stirring rod; the plurality of U-shaped brackets are fixedly arranged on the outer surface of the barrel body in an annular array; the fixed seat is fixedly arranged among the plurality of U-shaped brackets; the servo motor is fixedly arranged on the fixed seat through a motor seat; the transmission shaft rotationally penetrates through the fixed seat; a movable groove is formed in the top face of the can body. The movable ball is movably arranged in the movable groove in a penetrating manner; the transmission rod penetrates through the movable ball; the connecting rod is fixedly arranged on the transmission shaft; the stirring rod is fixedly connected with one end of the transmission rod; the device is ingenious and reasonable in design, the position of the stirring rod can be changed while coconut juice is mixed and stirred, the use cost is reduced, and the processing and mixing efficiency of the coconut juice can be improved.

The invention discloses a receiver-drier, and belongs to the field of receiver-driers. The receiver-drier comprises a shell and a filter box fixed in the shell, an air outlet and an air inlet are formed in the upper end of the shell; the air outlet is communicated with the inner bottom of the shell through a breather pipe; a plurality of water absorption cavities are uniformly formed in the filter box in the circumferential direction; an upper filter plate is mounted at the upper end of each water absorption cavity; a drying agent is filled in the water absorption cavity; a rotating pipe is rotationally connected in the shell; the upper end of the rotating pipe is provided with an upper air cavity right opposite to the upper end of the water suction cavity. A lower filter plate abutting against the lower end of the filter box is arranged at the lower end of the rotating pipe. A lower air cavity is formed in the lower end of the lower filter plate and located under the upper air cavity; the upper air cavity and the lower air cavity are both communicated with the rotating pipe; a centrifugal impeller is rotationally connected into the upper air cavity; and a heating wire is fixedly connected in the lower air cavity. And through rotation of the rotating pipe, the drying agent in each water absorption cavity is regenerated in sequence.

The invention discloses a self-cleaning heat exchanger with a high ventilation effect, which belongs to the technical field of ventilation and heat exchange and comprises a mounting shell with air outlet holes, a dust suction box and a lifter are mounted in a rectangular groove of the mounting shell, a cleaner is arranged on the lifter, a spiral pipe is arranged in an annular cavity of the mounting shell, and a plurality of mounting pipes are arranged in the rectangular groove of the mounting shell. A spiral stroke rod with a mounting plate slides in each mounting pipe, an unlocking structure is mounted on each mounting plate, a heat exchange pipe is connected between the mounting pipes and comprises a main pipeline and an auxiliary pipeline, a rotatable double-end gear is mounted on the main pipeline and meshed with a driving toothed bar, and a baffle structure is arranged at the communication position of the main pipeline and the auxiliary pipeline. A plurality of locking structures are installed on the two sides of the outer ring of the main pipeline, the spiral stroke rod can open or close a through hole, leading to the auxiliary pipeline, of the main pipeline, and heat transfer fins with adjustable angles are arranged on the two sides of the main pipeline. The heat exchange structure design and the integrated cleaning function can be optimized, and the ventilation and heat exchange performance is improved.

The invention belongs to the field of rapid detection of grain mildew, and particularly relates to an electronic nose system and application thereof to detection of different mildew degrees of grains. The electronic nose system is composed of a data storage module, a wireless communication module, a conditioning circuit board, a single-chip microcomputer, an air inlet pipe, a sensor array, a sensor air chamber, a connecting pipe, an air outlet pipe and an air pump. Wherein a guide plate is arranged in the sensor air chamber to divide the air chamber into different parts, and sensors are arranged at the different parts; therefore, the flow path of the grain volatile gas in the gas chamber is prolonged, and the sensor is ensured to be fully contacted with the gas. Meanwhile, an electronic nose system and a machine learning algorithm are used for grain mildewing detection in the granary, the mildewing degree can be accurately determined, quantitative prediction is carried out, and the method has the advantages of being high in precision and rapid in detection and is suitable for on-site rapid qualitative detection of grains in the granary; and the method has the characteristics of low cost, simplicity, convenience and high efficiency, and has a remarkable application value in the field of grain mildewing.

The invention discloses a micro-channel reactor and micro-channel reaction equipment, the micro-channel reactor comprises a reaction plate, a support transition plate and a heat exchange plate which are connected in a laminated manner, grooves are processed in the reaction plate to form micro-reaction channels, grooves are processed in the heat exchange plate to form heat exchange channels, and the support transition plate is separated between the reaction plate and the heat exchange plate; the micro-reaction channel comprises at least two micro-channel units and a middle flow channel connected with the adjacent micro-channel units, each micro-channel unit comprises a flow channel inlet, a flow channel outlet and a heart-shaped mixing cavity, an arc-shaped flow baffle and at least one turbulent flow column are arranged in the heart-shaped mixing cavity, the concave side of the arc-shaped flow baffle faces the flow channel inlet, and the convex side of the arc-shaped flow baffle faces the turbulent flow column. And the turbulent flow column is arranged between the arc-shaped flow baffle and the flow channel outlet. Through cooperation of the heart-shaped mixing cavity, the arc-shaped flow baffles and the turbulent flow columns, the particle suspension rate and the mass transfer capacity of the micro-reaction channel are effectively improved, then the reaction efficiency is improved, and the device can be used for achieving continuous preparation of nano-drugs.

The invention discloses a brake pad multi-angle grinding lathe and belongs to the technical field of brake pad grinding lathes, the brake pad multi-angle grinding lathe comprises a lathe bottom plate, a rotating part, a fixing part, a grinding part and a cooling part, a protective cover is fixedly connected to the upper surface of the lathe bottom plate, a door plate is hinged to the outer surface of the protective cover through a hinge, and the rotating part is arranged in the protective cover; two electromagnets are started through a control panel to generate a positive magnetic field, meanwhile, a magnetic sliding block generates negative magnetism, the magnetic sliding block is promoted to slide in a sliding rail, a grinding block is made to abut against a brake pad body, meanwhile, a driving motor and a rotating rod are matched with each other to drive the brake pad body to rotate, and therefore the brake pad body is ground; when the temperature sensor detects that the temperature exceeds a preset value, the control panel drives the electromagnet to generate a reverse electrode, the magnetic sliding block is promoted to drive the grinding block to move, a gap is generated between the grinding block and the brake pad body, and friction and heat generation are reduced.

This utility model relates to the field of pipeline technology, specifically to a compressor venting and noise reduction pipeline and its noise reduction system. The compressor venting and noise reduction pipeline includes: an exhaust pipeline, a bend downstream of the exhaust pipeline, a branch pipeline downstream of the bend, an output pipeline downstream of the branch pipeline, and a silencer downstream of the output pipeline. The silencer includes a spiral flow guiding device. This utility model reduces the velocity of the medium flow by using the bend, branch pipeline, and silencer, consuming part of the kinetic energy of the medium flow, thereby reducing the noise generated by the medium colliding with the pipe wall during discharge and reducing the safety risks to on-site personnel.

The utility model relates to the technical field of plastic particle processing, in particular to a drying device for a plastic granulator, which comprises a drying box, and a conveying mechanism and a shifting mechanism are mounted in the drying box. A plurality of fixing rods are arranged in the water mechanism, so that plastic particles falling on water filtering plates are dispersed, the plastic particles are prevented from being gathered, the plastic particles make full contact with the water filtering plates for dehydration, and under the action of the two water filtering plates, the flowing path of the plastic particles in the vibration water removal process is prolonged; meanwhile, plastic particles on a water filtering plate are prevented from directly sliding into the drying box, it is guaranteed that the plastic particles are fully vibrated, meanwhile, under the action of a guide plate and two pieces of absorbent cotton, the plastic particles subjected to vibration water removal are wiped again and then guided into the drying box, water retention on the surfaces of the plastic particles is avoided, and the drying effect is improved. And therefore, water on the surfaces of the plastic particles fully falls off, and the drying uniformity and drying efficiency of the plastic particles are improved.

The utility model discloses a perpendicular flow maze grid oil storage formula oil -water separation tank relates to oil -water separation technical field, including container, a plurality of baffle, oil collecting groove and water collecting tank, and the inside of container is equipped with the cavity, a plurality of baffle vertical setting in the cavity, and a plurality of baffle divide the cavity and separate the liquid inlet area, several separation zones and water outlet area that communicate in turn, and liquid can turn back and flow through liquid inlet area, separation zone and water outlet area, and the bottom of separation zone and water outlet area communicates, oil collecting groove sets up in the upper portion of separation zone, and overflow communication between oil collecting groove and separation zone, water collecting tank sets up in the upper portion of water outlet area, and overflow communication between water collecting tank and water outlet area, wherein, the overflow liquid level between oil collecting groove and separation zone is higher than the overflow liquid level between water collecting tank and water outlet area, the perpendicular flow maze grid oil storage formula oil -water separation tank of the utility model can improve the separation effect of oil -water mixture, and the separated grease is difficult to mix with waste water again.

The invention discloses a residual gas treatment device of a hydrogen peroxide sterilizer, and relates to the technical field of gas treatment devices.The residual gas treatment device is technically characterized by comprising a treatment shell, a gas inlet pipe is fixedly connected to one side of the treatment shell, an exhaust pipe is fixedly connected to the upper end of the treatment shell, and a filtering assembly is arranged on one side of the gas inlet pipe; a plurality of catalyst plates distributed in a crossed mode are fixedly connected to the inner wall of the treatment shell, a preheating assembly is fixedly connected to the outer side wall of the treatment shell, the filtering assembly comprises a filtering box, a filtering net is installed on the inner wall of the frame, and a baffle is fixedly connected to one side of the filtering net; a cleaning assembly is arranged on the inner wall of the filter box and located on one side of the filter screen. Residual gas entering the treatment shell is preliminarily filtered through the filtering assembly, impurities such as solid particles in the gas can be effectively intercepted, pore channel blockage and active site loss caused by the fact that the impurities make contact with the catalyst plate are avoided, and it is ensured that the catalyst plate is always kept in an efficient catalysis state.

The utility model relates to the technical field of environmental protection, in particular to an SNCR (selective non-catalytic reduction) denitration reactor which comprises a disc, supporting legs are fixedly connected to the periphery of the lower end of the disc, an outer heat insulation barrel is fixedly connected to the inner wall of the disc, a smoke inlet pipe is connected to the right portion of the upper end of the outer heat insulation barrel in a penetrating manner, and a smoke exhaust pipe is fixedly connected to the lower end of a reaction kettle body. A first control valve is arranged on the lower portion of the outer surface of the smoke exhaust pipe, a plurality of clamping strips are arranged on the inner wall of the reaction kettle body, and a main body device is connected to the inner wall of the reaction kettle body in a clamped mode. According to the SNCR denitration reactor disclosed by the utility model, the main body device and the auxiliary components of the main body device are used for promoting reaction and flue gas treatment, the flow path of the flue gas in the reaction kettle is increased, meanwhile, the main body device and the auxiliary components can be used as a spraying point or a mixing point of a reducing agent to promote full mixing of the reducing agent such as a urea solution and the flue gas, and the use effect is good.

The invention provides a heat exchanger which is provided with a middle area and an end area, the heat exchanger comprises at least two plates, the plates are stacked in the height direction of the heat exchanger, each plate comprises a plurality of protruding structures, at least part of the protruding structures are distributed in the middle area, and the protruding structures located in the middle area are arranged in an array mode in the first direction and the second direction. The first direction intersects with the second direction, an included angle between the first direction and the second direction is defined as alpha 1, the alpha 1 faces the end area and is smaller than 90 degrees, and the flow resistance of fluid in the heat exchanger can be reduced.

The invention discloses a quenching wastewater treatment device and a use method thereof, belonging to the technical field of quenching wastewater treatment, comprising a bottom plate, a mixing reaction pool fixedly arranged on the bottom plate, a stirring component and a driving component arranged on the mixing reaction pool, a concentration precipitation component arranged on the bottom plate, the mixing reaction pool is divided into four reaction pools by arranging four flow-changing baffles, and the flow direction of water is changed by the flow-changing baffles to increase the flow path, thereby increasing the reaction time, the mutual cooperation of the stirring component and the driving component can perform multi-stage stirring on the mixing reaction pool, the rotation positions of two adjacent stirring circular plates are different, thereby further disrupting the water flow rotation direction inside the mixing reaction pool, improving the reagent mixing effect, and the mutual cooperation of the stirring component, the driving component and the concentration precipitation component can improve the automation degree of the quenching wastewater treatment, and realize the recycling of the quenching wastewater.

The present invention discloses an electrochemical descaling device for circulating water, mainly related to the field of water treatment. It includes a descaling box, a water inlet pipe and a water outlet pipe are provided on the descaling box, a slag discharge pipe is provided at the bottom of the descaling box, a plurality of cathode plates are distributed along a vertical array inside the descaling box, an anode plate is provided between adjacent cathode plates, and a through port is provided on the cathode plate and the anode plate, a cavity is provided inside the cathode plate, a movable plate is connected along a vertical sliding connection inside the cavity, a plurality of deposition holes are symmetrically provided on the upper and lower sides of the cathode plate, a plurality of deposition columns are symmetrically provided on the upper and lower sides of the movable plate, an outer shaft body is provided in the descaling box for driving the plurality of movable plates to slide up and down at the same time, and a scraper is symmetrically connected to the upper and lower sides of the cathode plate. The beneficial effect of the present invention is that it can solve the technical problem that the cleaning frequency of the existing cathode structure is high or the cleaning is difficult, reduce the cleaning frequency, make the cleaning more convenient and thorough, and ensure the electrochemical descaling effect after long-term use.

The present application belongs to the technical field of sewage treatment, and discloses a continuous flow aerobic granular sludge treatment device, which includes a pool A, a pool O, an aerobic granular sludge generating mechanism, a clear liquid discharge component and a reflux component, wherein the pool A constitutes an anaerobic pool, the pool O constitutes an aerobic pool, the pool O is arranged outside the pool A and extends along the circumference of the pool A, the bottom of the pool O is connected to the bottom of the pool A, the aerobic granular sludge generating mechanism is arranged inside the pool O and located at the outer edge of the pool O, a water inlet is arranged on the upper part of the aerobic granular sludge generating mechanism, the clear liquid discharge component has a water inlet end located inside the aerobic granular sludge generating mechanism and a drainage end extending to the outside of the pool O, the water inlet end is located above the water inlet, and the reflux component includes a first reflux pipe located in the pool O and connected to the aerobic granular sludge generating mechanism, and a second reflux pipe connected to the aerobic granular sludge generating mechanism and extending to the pool A.

This invention relates to the field of waste gas treatment technology, and discloses a centralized waste gas purification device and process for industrial smelting production. The centralized waste gas purification device for industrial smelting production includes a settling chamber shell. A rectangular frame is arranged above the dust collection hopper of the settling chamber shell. Multiple dust collection plates are horizontally and linearly distributed at equal intervals within the rectangular frame. A movable plate is arranged between adjacent dust collection plates. Multiple air guides are vertically arranged at equal intervals on both sides of the movable plate. Driving components are installed on both sides of the settling chamber shell. The inclined air guides forcibly change the airflow direction and extend the flow path. On the one hand, this increases the residence time of particles, which is beneficial for large particles to escape the airflow and fall into the dust collection hopper. On the other hand, it drives small dust particles to move to the vicinity of the dust collection plates, where the electret material of the dust collection plates can adsorb the small dust particles.

The utility model discloses a liquid cooling plate which comprises an upper cover plate and a lower cover plate, and a main flow channel is formed between the upper cover plate and the lower cover plate; the water inlet nozzle is communicated with the water inlet of the main flow channel and is used for allowing a refrigerant to flow in; the water outlet nozzle is communicated with a water outlet, corresponding to the water inlet, of the main runner and is used for allowing a refrigerant to flow out; the heat exchange columns are arranged in the main flow channel, and the densities of the heat exchange columns in different areas in the main flow channel are different. According to the liquid cooling plate, the plurality of heat exchange columns are arranged, so that the structural strength of the liquid cooling plate can be enhanced, the contact area between a refrigerant and the flow channel wall can be increased, and the heat exchange efficiency is improved. Besides, the heat exchange columns with different densities are arranged in different areas, so that the flow distribution of the refrigerant in the flow channel can be optimized, the refrigerant is uniformly distributed, and the uniformity of the heat dissipation performance of the liquid cooling plate is improved.

The utility model relates to the technical field of automatic cooling liquid circulators, in particular to an automatic cooling liquid circulator capable of distributing inlet liquid, which comprises a support frame, a controller, a cooling mechanism and a water pump, one side of the supporting frame is connected with a controller through bolts, the inner wall of the supporting frame is connected with a cooling mechanism, the cooling mechanism is connected with a water pump, the water outlet end of the water pump is connected with a first temperature measuring valve, the first temperature measuring valve is connected to the inner wall of the supporting frame in a penetrating mode, and an air cooler is arranged above the water pump. The back of the supporting frame is connected with a filtering mechanism. According to the automatic cooling liquid circulator capable of feeding and shunting, the cooling liquid is shunted through the three sets of heat preservation boxes, the flowing paths of the cooling liquid in the heat preservation boxes are increased through the temperature conduction pieces, the back of the semiconductor chilling plate is refrigerated, the cooling liquid passing through the heat preservation boxes is cooled, then the cooling liquid is subjected to parallel flow through the parallel flow pipe, and then feeding and shunting of the automatic cooling liquid circulator are achieved.

The application discloses a liquid metal bearing for an X-ray tube and the X-ray tube, relates to the technical field of X-ray tubes, and solves the technical problems of short service life and poor heat dissipation effect of the bearing. The liquid metal supporting bearing comprises a bearing sleeve, a mandrel, liquid metal and a microporous structure; the bearing sleeve is sleeved outside the mandrel, and a gap is arranged between the bearing sleeve and the mandrel; the liquid metal is filled in the gap; the microporous structure is arranged on the inner surfaces opposite to each other of the bearing sleeve and the mandrel and / or the outer surfaces opposite to each other of the mandrel and the bearing sleeve, the microporous structure is formed by a plurality of micropores arranged in an array, and the microporous structure has a protruding direction consistent with the flowing direction of the liquid metal. The liquid metal distribution is optimized through the micropores and optional microslit structures between the bearing sleeve and the mandrel, the friction coefficient is reduced, the heat dissipation performance is enhanced, and the service life and the heat dissipation effect of the bearing can be remarkably improved.

The utility model discloses a tomato breeding pollination device, and particularly relates to the field of tomato breeding, the tomato breeding pollination device comprises a pollen tank for containing pollen and a piston pipe for blowing the pollen, the front end of the piston pipe is provided with a flared pipe for spraying the pollen, and the rear end of the piston pipe is connected with a micro air pump; a telescopic auxiliary pressure pipe fitting is arranged below the piston pipe, the rear end of the auxiliary pressure pipe fitting is connected with the piston pipe, the front end of the auxiliary pressure pipe fitting extends to the position below the horn pipe, and a handle is connected to the bottom of the auxiliary pressure pipe fitting. According to the utility model, the pollen flow path is prolonged, the airflow speed is reduced, the pollen is intensively sprayed to the stigma, the utilization rate of the pollen is improved, the main airflow is matched with the auxiliary lateral airflow, the pollen and plants can be lifted, the attachment of the pollen in the closed flower is enhanced, and the pollination effect of the closed flower and the multi-layer flower is improved.

The utility model belongs to ultrasonic water gauge technical field discloses a kind of circuit board module and ultrasonic water gauge.The circuit board module includes glue filling box, circuit board, liquid crystal screen and liquid crystal support. Among them, liquid crystal support sealing connection is at the bottom of glue filling box, and form airtight space between with the bottom of glue filling box, liquid crystal screen is set in airtight space, circuit board is set in glue filling box and located the side of liquid crystal support far from liquid crystal screen.Good at liquid crystal screen is equipped with connecting pin foot, and liquid crystal support is provided with connecting convex part towards circuit board, connecting pin foot is arranged in connecting convex part and is connected with circuit board, to realize the electric connection of liquid crystal screen and liquid crystal support, and connecting pin foot is connected with circuit board by connecting convex part, increase the arrangement path of connecting pin foot in liquid crystal support, so that even when filling, filling glue flows into airtight space by connecting pin foot, due to the additional connecting convex part, increase flow path, to effectively prevent filling glue from polluting liquid crystal screen.

The utility model discloses a kind of high-efficiency filters, belong to separation filtering technical field, it includes upper filter shell and lower filter shell;Upper filter shell includes top wall, and the bottom surface of top wall is coaxially provided with several upper cylinder shell;Lower filter shell includes bottom wall, and the top surface of bottom wall is coaxially provided with several lower cylinder shell;Upper filter shell and lower filter shell are docked after along up-down direction each upper cylinder shell and lower cylinder shell are alternately nested.The high-efficiency filter provided by the utility model prolongs the flow path of fluid in the filter of limited volume, makes fluid and filtering material fully contact, improves filtering efficiency;Upper filter shell and lower filter shell can be respectively integrally formed and processed, and assembly is convenient.

The utility model relates to a mixed solution layering device which comprises a liquid storage tank and at least two partition plates vertically arranged in the liquid storage tank, a gap is kept between the upper side of each partition plate and the top of the liquid storage tank to form a first circulation channel, and one of the front side and the rear side of each partition plate is connected with the corresponding side wall of the liquid storage tank. A gap is kept between the other partition plate and the corresponding side wall of the liquid storage tank to form a second circulation channel, and the second circulation channels formed by every two adjacent partition plates and the liquid storage tank are arranged in a staggered mode; a liquid inlet is formed in one of the front side and the rear side of the liquid storage tank, a first liquid outlet is formed in the other one, a second liquid outlet is formed in the bottom side of the liquid storage tank, and the liquid inlet and the first liquid outlet are located in the sides, away from each other, of the first partition plate and the tail partition plate respectively. The mixed solution layering device provided by the utility model is provided with a plurality of partition plates, so that the liquid flow impact force is dispersed, and the mixed solution is uniformly distributed; second circulation channels formed by every two adjacent partition plates and the liquid storage tank are arranged in a staggered mode, the flowing path is prolonged, the standing time is prolonged, and layering is sufficient.

The utility model discloses an air detector, which relates to the field of air detection and is characterized by comprising a main body, a detection sensor and an air pump, an air inlet pipe is arranged at the top end of the main body, a spiral air inlet pipe is arranged at one end, far away from the main body, of the air inlet pipe, an air inlet cover is arranged on the air inlet pipe, and the air inlet cover is hollow and contains the spiral air inlet pipe. A plurality of air ports are formed in the air inlet cover in the circumferential direction. The air inlet cover comprises an upper cover and a lower cover which can be separated and combined, the air inlet pipe penetrates through the lower cover and is fixedly connected with the lower cover, a filter screen ring groove is formed in the inner bottom face of the lower cover, and a coarse filter screen is detachably connected into the filter screen ring groove. The spiral air inlet pipe is arranged, so that the air flowing path can be prolonged, the air flow is more stable, and the detection precision of the detection sensor is improved.

The utility model provides a kind of water vapor condensation recycling system, belong to water vapor condensation recycling technical field, comprising: with the steam pipeline of transmission used water vapor connection's water separator, water separator's gas outlet is connected with the air inlet of condenser;The liquid outlet of water separator and the condensate outlet of condenser are connected with the inlet of condensate tank by pipeline, the outlet of condensate tank is connected with the inlet of filter, the outlet of filter is connected with the inlet of ion exchanger, the outlet of ion exchanger is connected with the inlet of recovery soft water tank;Condensate tank is additionally provided with non-condensable gas emptying pipe;Condenser is surface type condenser or mixed type condenser.The system carries out recovery to water vapor's waste heat and water resource, and it is recycled again to production process, reduces water resource and heat energy's loss and demand, and energy-saving effect is remarkable, also reduces production cost.

The utility model discloses a sand core structure for casting a casting through hole, which belongs to the technical field of casting processing, and is technically characterized by comprising a first casting box and a second casting box arranged above the first casting box, and the first casting box is connected with the second casting box through bolts; the flowing path of a metal solution is prolonged through the design of the snakelike groove, the flowing speed is remarkably reduced, the gas entrainment risk caused by turbulent flow is reduced, the angle of the first positioning shell and the position of the discharging hopper can be rapidly adjusted through the arrangement of the sliding rail, the adjustable first supporting rod and the adjustable second supporting rod and the linkage design of the multiple clamping grooves, and the working efficiency is improved. The feeding port of the sand core body is accurately matched, gas in a cavity can be efficiently exhausted through the exhaust hole with the inclined angle and an active exhaust and multi-stage exhaust system of the exhaust fan, air holes are prevented from being formed, and therefore the surface smoothness and the internal compactness of a casting are greatly improved.

The invention relates to the technical field of gas pressure reduction, in particular to a two-stage pressure reducer which comprises a valve body formed by connecting a main body and an aluminum upper cover in a threaded mode, and further comprises a gas source connecting mechanism arranged at a gas inlet in the main body and configured to be connected with an external gas source and filter entered gas; the two-stage pressure reduction mechanism is arranged in the gas source connecting mechanism and the parent body and is used for performing two-stage pressure reduction on the entering gas; the gas outlet mode of the flow meter is an OUT mode, and the flow meter is fixedly installed at the end of the main body through an adapter and is configured to display the flow of output gas; the gas flow channel is arranged in the parent body and is configured to introduce the gas subjected to two-stage pressure reduction into the flow meter and prolong the flow path of the gas in the parent body, so that the gas exchanges heat with the parent body before flowing into the flow meter; according to the gas pressure reducer, the gas flow channel is formed in the parent body, and the problem that gas is frozen when an existing gas pressure reducer works for a long time or is in a low-temperature environment is ingeniously solved.

The utility model relates to LED heat dissipation technical field especially relates to a kind of LED radiator, including the equal interval and splicing together of several heat dissipation fins, the surface of heat dissipation fin is equipped with several water inlet holes and several water outlet holes, several water inlet holes and several water outlet holes are respectively equipped with several U-shaped pipes, the water inlet and water outlet of several U-shaped pipes are located in the same horizontal plane, and the water inlet of several U-shaped pipes is respectively connected with the same main water inlet pipe by several branch water inlet pipes, the water outlet of several U-shaped pipes is respectively connected with the same main water outlet pipe by several branch water outlet pipes;The heat dissipation fin of the utility model is spliced together, can be combined according to the heat dissipation area of LED device, and the scope of application is wide, and the uniformity of heat transfer can be also guaranteed, beneficial to heat dissipation, simultaneously, the setting of U-shaped pipe increases the flow path of water flow in heat dissipation fin, can effectively take away the heat on heat dissipation fin, effectively improves heat dissipation efficiency.