343results about How to "Increase flow rate" patented technology

The utility model relates to a reaction kettle which comprises a kettle body and a driving mechanism arranged on the kettle body, a guide cylinder and a stirrer linked with the driving mechanism are arranged in the kettle body, a plurality of transverse baffle rings are arranged on the inner circumferential wall of the guide cylinder, and a plurality of openings positioned on the lower side of each transverse baffle ring are formed in the circumferential wall of the guide cylinder. An annular frame linked with the driving mechanism is further rotatably arranged on the peripheral wall of the flow guide cylinder, a plurality of arc-shaped plates capable of covering the openings are arranged on the annular frame, the number of the arc-shaped plates corresponds to that of the openings, and when the annular frame rotates, the arc-shaped plates alternately open or close the openings, so that the flow in the flow guide cylinder flows from top to bottom under the action of the stirrer, and the flow in the flow guide cylinder is uniform. The flowing sectional area of the fluid at each transverse baffle ring is shrunk and expanded, so that the fluid is accelerated and then decelerated, and multi-stage shearing and turbulent flow are generated; meanwhile, the opening circulation on the guide cylinder is opened and closed, so that the dynamic change of the flow field structure between multi-stage shunting circulation and single bottom return is realized, and the mixing efficiency of the reaction kettle is improved.

This invention discloses an acid cleaning fixture for a 166MHz quarter-wavelength superconducting cavity. The acid cleaning fixture comprises a large-tube side fixture, a small-tube side combined fixture, and an acid flow guiding fixture. The large-tube side fixture serves as the acid inlet or outlet of the superconducting cavity system. One end of the fixture is sealed to the large-tube flange of the superconducting cavity system, and the other end is connected to the acid cleaning equipment via a first connecting flange and a connecting pipe. The small-tube side combined fixture also serves as the acid inlet or outlet of the superconducting cavity system. One end of the fixture is sealed to the small-tube flange, the coupler flange, and the flanges of each rinsing port of the superconducting cavity system. The other end is connected to the acid cleaning equipment via a second connecting flange and a pipeline. The acid flow guiding fixture is located inside the superconducting cavity system and communicates with the large-tube side fixture. It guides the flow of acid entering the superconducting cavity system through the large-tube side fixture and balances the acid flow rate. This invention significantly improves the acid cleaning effect of the superconducting cavity and ensures smooth bubble removal.

The utility model discloses a self-adhesive agricultural mulching film, which relates to the technical field of agricultural mulching films, and comprises a middle film, two sides of the middle film are fixedly connected with side films, the mulching film is in cohesive connection with ground soil through a cohesive layer at the bottom of a cohesive weed suppression layer, and the design of ensuring the cohesive gradient ensures that the cohesive of a central area is larger. After the sticky protrusions are combined with the soil, the laying efficiency of workers is improved, fixing through U-shaped nails is not needed, physical loss is reduced, the labor intensity of the workers is reduced, the sticky strength of the edges is small, film uncovering is facilitated, the film uncovering speed is increased, and the waste film recycling speed is increased. A plurality of groups of dividing holes are arranged in sequence to realize temperature adjustment and promote plant growth, the directional flow guide grooves adopt the design of V-shaped grooves, namely the design of inclination angles, so that the rainwater diversion efficiency is improved, drainage can be helped, and waterlogging damage to roots can be effectively prevented; and the problem that the mulching film is lifted due to overlarge wind force is effectively prevented.

The utility model discloses a coking anti-blocking mechanism for a second-line distillation outlet of reduced pressure distillation, and particularly relates to the technical field of distillation kettles, the coking anti-blocking mechanism comprises a distillation kettle, a first distillation port and a second distillation port are respectively arranged on the distillation kettle, and a mounting groove is arranged in the second distillation port. A plurality of heating pieces which are arranged in a linear array are arranged in the mounting groove, an outlet pipe is arranged on the second distillation opening, and a plurality of guide grooves which are arranged in a linear array are formed in the outlet pipe. According to the distillation kettle provided by the utility model, exhaust and liquid discharge are realized through the first distillation port and the second distillation port on the distillation kettle, installation of a plurality of heating elements is realized through the installation groove of the second distillation port, liquid discharge is realized through the outlet pipe on the second distillation port, and liquid is guided through a plurality of guide grooves on the outlet pipe; the liquid flow rate is increased.

This utility model discloses an online cleaning device for the mesh plate of a tobacco leaf curing machine. It is installed in the re-curing and rehydration section of the tobacco leaf curing machine and includes two sets of rinsing mechanisms fixedly installed above and below the mesh plate. Each set of rinsing mechanisms includes at least one rinsing component, which includes a Venturi tube. The Venturi tube includes a contraction tube and a diffusion tube. The end of the contraction tube has an air inlet connected to a steam supply system. The connection between the contraction tube and the diffusion tube has a liquid inlet connected to a water supply system. The end of the diffusion tube has an outlet connected to a steam-water mixture conveying pipe. The end of the steam-water mixture conveying pipe is connected to a rinsing pipe, which has several nozzles spaced along its length. This device can effectively remove tobacco residue (including oil residue) from the mesh plate, and it cleans automatically without damaging the mesh belt guard plate.

The utility model relates to a kind of exhaust structure of motor gear box for vehicle, including exhaust valve in gear box, labyrinth, backflow plate and several baffle, backflow groove is formed between backflow plate and gear box inner wall, baffle makes several intercommunicating chambers in gear box, chamber is between labyrinth and backflow groove, chamber is communicated with backflow groove, chamber is also communicated with labyrinth, exhaust valve is communicated with labyrinth, backflow groove is equipped with backflow port with gear box interior communication in both ends, oil liquid into chamber can flow through backflow groove and return in gear box, after the air pressure in gear box rises, gas is discharged from exhaust valve via labyrinth.The utility model is by being equipped with baffle, reduce the oil liquid that splashes when gear rotates enters labyrinth, also reduce the oil liquid reaching labyrinth entrance, effectively avoid the oil leakage situation of exhaust valve, oil liquid in chamber flows through backflow groove and returns in gear box, reach the effect of oil liquid backflow;Gas can avoid gear box oil leakage after being discharged.

The utility model relates to an ultrasonic gas meter flow regulator. The flow regulator is characterized in that the flow regulator is mounted at a flow channel air inlet of the flow channel and sequentially comprises a scattering layer, a developing layer and a rectifying layer which are integrally formed through injection molding or are assembled and connected in a split manner. The utility model aims to change the original gas flow field distribution, stabilize the flow field characteristics of the metering module and improve the metering precision of the ultrasonic gas meter, and has the characteristics of strong adaptability, convenience in installation and positioning, good flow field stability, high precision and the like.

This application relates to a rail flaw detection vehicle, which includes: a frame; a wheel assembly disposed on one side of the frame along a first direction; the wheel assembly including a plurality of wheels arranged along a second direction, the wheels being rotatably connected to the frame and configured to rotate about an axis parallel to a third direction; a detection assembly including an ultrasonic probe, the ultrasonic probe being located on the side of the frame near the wheels and connected to the frame; the ultrasonic probe being used to emit ultrasonic waves toward the rail and receive ultrasonic waves reflected by the rail; a container disposed on the frame; the container containing a coupling fluid; a suction pump disposed on the frame; the inlet of the suction pump communicating with the container; a plurality of outlet pipes disposed on the frame, the inlets of the outlet pipes communicating with the outlets of the suction pump; the outlets of the outlet pipes facing the rail. In summary, the rail flaw detection vehicle of this embodiment, by providing a suction pump, can increase the flow rate of the coupling fluid in the outlet pipes, ensuring that the flow rate of the coupling fluid in each outlet pipe remains stable.

The utility model discloses a controllable temperature regulation's moxa -moxibustion box relates to moxa -moxibustion box technical field, it includes moxa -moxibustion box, the inside bottom side of moxa -moxibustion box is provided with the ash net, the rear side wall of moxa -moxibustion box is provided with a plurality of ventilation holes, the front side wall of moxa -moxibustion box is provided with two temperature control holes, and the upside of moxa -moxibustion box is provided with the box cover. Controllable temperature regulation's moxa -moxibustion box, through setting up the temperature control box and sticking moxa -moxibustion box, temperature probe can monitor the temperature of inside bottom side of moxa -moxibustion box in real time, when the temperature in moxa -moxibustion box is too low, can pass through the fan of opening, pass through the airflow delivery channel formed between ventilation hole, temperature control hole and drainage hole, increase the flow rate of airflow in moxa -moxibustion box, so as to realize the sufficient combustion of moxa stick / moxa stick, increase the temperature of moxa stick / moxa stick combustion in moxa -moxibustion box, guarantee the moxa stick / moxa stick of burning to have enough warm heat to stimulate the activation of meridian qi of body part.

The present application relates to a kind of damping mechanism and grinding polishing machine tool, damping mechanism includes fixed seat, connecting disc and at least two piston cylinders, piston cylinder includes piston rod, fixed seat is used to connect, at least two piston cylinders are arranged in pairs on connecting disc, closed fluid circuit is arranged between each pair of piston cylinders, fixed seat is movably connected with connecting disc by piston cylinder, piston cylinder is arranged to damp the movement of fixed seat.Grounding, grinding disc will be lifted by the part of workpiece thickness, will produce floating and drive fixed seat floating in rotation process, piston cylinder is provided with throttle orifice at the connection of the side of fluid circuit away from fixed seat, due to the throttle effect of small hole, pressure difference can be generated on both sides of throttle orifice, and then pressure difference is generated between each pair of piston cylinders, so that the part of workpiece thickness bears larger pressure from grinding disc.Each two piston cylinders are arranged in pairs on connecting disc, and pressure is applied to each part of workpiece, so as to improve grinding efficiency.

The utility model provides a train wind drainage device for ventilation inside a brake disc of a high-speed train, and belongs to the field of brake devices of high-speed trains. The train wind drainage device for ventilation in the brake disc of the high-speed train comprises a drainage assembly, and the drainage assembly comprises an axial sleeve and a drainage pipe. The axial sleeve is arranged on an axle of a bogie of the high-speed train in a sleeving mode, and the two ends, in the axial direction of the axial sleeve, of the axial sleeve communicate with the axial holes of the corresponding brake discs correspondingly. The drainage pipe is arranged in the advancing direction of the high-speed train in an extending mode and communicates with the axial sleeve, so that airflow formed by running of the high-speed train can flow to the hollow area of the brake disc through the drainage pipe, the axial sleeve and the axial hole, and an opening in the end, away from the axial sleeve, of the drainage pipe is an air collection opening. The connecting line of the centers of the two brake discs is a datum line, and the center of the air collecting opening is arranged on the side, close to a ballast bed, of the datum line in the vertical direction. The drainage device can improve the reliability of the brake disc.

This utility model discloses an ultrasonic paint coating quick-drying device, including a drying device, a conveying device at the lower end of the drying device, and a wooden board at the upper end of the conveying device. The drying device includes two fixed frames, a box at the upper end of the fixed frames, a blower at the upper end of the box, a heating box connected to the output end of the blower, an air supply pipe connected to the heating box, and a fixed connection between the output end of the air supply pipe and the top of the box. Several fans are installed at two opposite ends inside the box, and a circulating exhaust fan is installed on one side of the top of the box. When the fan is turned on, it forms a gas convection circulation, accelerating the movement of hot air. The circulating exhaust fan reintroduces the circulated hot air into the heating box to reduce energy consumption. A serpentine heating tube is installed at the bottom of the box. Product advantages: It adopts an upper and lower double serpentine heating structure, with a laminar flow hot air curtain in the top box and a contact serpentine heat conduction module in the bottom conveyor belt, forming a three-dimensional heat field coverage to ensure uniform heating of the board.

The utility model relates to the technical field of transition section pipeline connection, specifically is a kind of pipe network construction transition section pipeline connection structure, including transition pipe, the both sides of transition pipe are fixedly installed with connecting assembly, and the one end of transition pipe is fixedly installed with first pipeline body by connecting assembly, and the other end of transition pipe is fixedly installed with second pipeline body by connecting assembly, and connecting assembly includes two access pipes, and two the access pipe is fixedly installed at the both ends of transition pipe;The utility model installs transition pipe between two caliber different access pipes, when working, fluid passes through first pipeline body, and when fluid is guided under the conical inner wall of transition pipe, gradually increase the flow rate of fluid, avoid the flow rate and pressure fluctuation of excessive in short time, produce greater pressure to the connecting area between first pipeline body and second pipeline body, to protect the connecting area, improve the service life of connecting area.

The utility model relates to the technical field of water faucet, concretely relates to a bathroom faucet convenient to assemble, technical solution main points include valve body, valve core subassembly, end cover and handle, the hot water flow channel, cold water flow channel, water outlet flow channel and installation groove are arranged in the valve body, the tank bottom of installation groove sets up hot water hole, cold water hole and water outlet hole, the isolation department is arranged in the valve body, the isolation department is symmetrically arranged two and separates hot water and cold water, two isolation departments form the hook groove area, the canyon area, hot water hole, cold water hole are in the hook groove area, and water outlet hole is in the canyon area, and at least two positioning grooves are arranged on the tank bottom, the positioning column of two with the positioning groove insertion is arranged on the valve core subassembly, makes the water pass hole of valve core subassembly and hot water hole, cold water hole and water outlet hole mutually coincide. The utility model realizes reliable convenient assembly through above -mentioned structure.

The utility model discloses a special-shaped filler strip in the technical field of heat exchanger equipment, which comprises a strip body, the strip body mainly comprises a bottom strip and a side strip, the side strip is connected to one side of the top of the bottom strip, a plurality of grooves are formed in the top of the side strip along the length direction at equal intervals, and the grooves are inclined. The filler strip adopts the L-shaped special-shaped design, the grooves are formed in the side strips at equal intervals, it is ensured that the intervals of all layers of pipes are consistent, and the grooves are inclined, so that when the filler strip is used in a winding type heat exchanger, the convection quantity and the flow speed of media or gas can be increased, the heat exchange effect of equipment can be improved, meanwhile, the pipes can be better fixed, and the service life of the equipment is prolonged. Overall vibration and noise of pipes and equipment are reduced, stability is improved, the flow and the flow speed of liquid or gas in the heat exchanger are ensured, and the service life of the equipment is prolonged.

The utility model relates to high pressure reaction kettle technical field especially is a kind of high pressure reaction kettle quick heating device, including kettle body, half pipe jacket, jacket temperature -keeping cover, kettle cover, stirring mechanism, charging hole and lug;The utility model is through the heating structure design of half pipe jacket+spiral flow guide plate, sets up spiral flow guide plate in half pipe jacket, makes heat carrier form turbulent flow, increases flow velocity and expands heat exchange area, spiral flow guide plate is made of high heat conduction material copper alloy, absorbs the heat of medium heat conduction to kettle body while playing the flow guiding effect, to improve heat transfer coefficient, make kettle body quick heating, and cover jacket temperature -keeping cover in the outside of half pipe jacket, the nanometer micropore heat insulation material of jacket temperature -keeping cover inside is made of nanometer micropore heat insulation material, is filled in the gap between inner shell and half pipe jacket, and vacuum interlayer is equipped between inner shell and outer shell, reduce heat loss in the process of heating under this structure effect, to improve kettle body heating efficiency.

Circuit board chemical copper plating equipment with ultrasonic oscillation comprises an electroplating bath, an ultrasonic oscillation device and a processing device, the ultrasonic oscillation device and the processing device are arranged in the electroplating bath, mounting seats are arranged on two opposite side surfaces of the electroplating bath, a connecting rod is arranged between the two mounting seats, and the ultrasonic oscillation device is arranged on the connecting rod and moves along the connecting rod; the ultrasonic vibration device comprises an ultrasonic vibration rod, and the outer surface of the ultrasonic vibration rod is provided with a convex ring and a groove; an ultrasonic transducer is arranged on the bottom surface of the external treatment device, a flow guide part is arranged at the top of the external treatment device, the flow guide part is gradually reduced from bottom to top, an exhaust port is formed in the top of the flow guide part, a vacuum pump is arranged on the outer side of the exhaust port, an air outlet hole is formed in the upper portion of the outer side of the vacuum pump, and a backflow pipe is arranged on the side face of the vacuum pump; and the bottom end of the return pipe is connected to the treatment tank. Through the arrangement of the movable ultrasonic vibration device and the processing device, the electroplating quality is improved, the practicability is high, and the electroplating device has high popularization significance.

This utility model belongs to the field of cooling tower manufacturing technology, specifically relating to a fillerless spray cooling tower, including a tower body. Inside the tower body, from top to bottom, are arranged a water collector, a water spraying device, and a secondary atomizing device. The water spraying device includes a water supply pipe with several vortex atomizing nozzles. One end of the water supply pipe is connected to a water inlet, and the other end is closed and fixedly connected to the other end of the tower body. The bottom of the tower body is recessed and connected to a water outlet. An air inlet louver is provided on the side wall of the tower body, located below the secondary atomizing device. A ventilation opening is provided on the top wall of the tower body, and an exhaust fan is installed inside the ventilation opening. This fillerless spray cooling tower of this utility model has good atomization effect and high cooling efficiency.

The device comprises an ash hopper shell, a flue is arranged on the outer side of the ash hopper shell, a plurality of hanging lug plates are symmetrically arranged on the inner walls of the two sides of the ash hopper shell, and a flow guide plate is arranged between every two corresponding hanging lug plates. According to the invention, the ash bucket structure in which the plurality of hanging lug plates and the guide plates are matched with each other is arranged in the ash bucket shell, so that a flow field can be changed by utilizing the additionally arranged guide plates, and dust in flue gas can be prevented from being directly taken out of the ash bucket shell by bypassing the flow field; moreover, due to the arrangement of the guide plate, the through-flow area of the ash bucket shell is reduced, the flow velocity of the flue gas is increased, the flue gas has a larger turn under the flow field deviation action of the guide plate, and the dust can be thrown to the bottom of the ash bucket shell to be deposited under the action of centrifugal force and gravity, so that the capture and the sedimentation of the dust are facilitated. And meanwhile, the contact area between the flue gas and the ash bucket shell is increased due to the arrangement of the guide plate, so that dust is better captured.

The invention discloses a transformer capable of reducing loss, and relates to the technical field of transformers, the transformer comprises a shell and an adjusting assembly, a guide plate is arranged at the upper part in the shell, a housing is arranged in the middle of the guide plate, the adjusting assembly is arranged at the inner side of the housing, the adjusting assembly comprises a shaft rod, and the shaft rod is arranged at the inner side of the housing; an adjusting cavity is formed in the lower portion of the shaft rod. When the device is used, the device can be automatically adjusted according to the temperature change in the transformer, so that when the temperature rises, the circulating flowing speed of oil liquid is increased, heat dissipation is accelerated, the heat dissipation efficiency of the device is positively correlated to be matched with the temperature change of the device, it is guaranteed that the device can dissipate heat in time, and the service life of the device is prolonged. According to the device, the temperature of the oil liquid is increased, additional loss increase caused by too high temperature is avoided, oil sludge mingled in the oil liquid can be separated and removed when the oil liquid is circulated, and the situation that the oil sludge adheres to the device, the heat dissipation performance of the device is reduced or the additional loss of the device is increased is avoided.

The application relates to the technical field of sealing joints, in particular to a sealing joint for a high-pressure hydrogen gas conveying pipeline, which comprises a male connector seat, a female connector seat and a valve core group, the joint ends of the male connector seat and the female connector seat are respectively provided with lock plates and flange joint plates, the outer periphery of the flange joint plate is provided with wedge locking blocks and screw rods, the opposite surfaces of the lock plate and the flange joint plate are respectively provided with first sealing ring groups and second sealing ring groups, the surface of the lock plate is provided with a sealing gasket, the valve core group comprises a core shaft, a spring, a valve sleeve and a guide head, and a gradually tapered section, a throat section and a gradually expanded section flow channel structure are formed between the valve sleeve and a flow channel. The male connector seat and the female connector seat are quickly locked and connected through the wedge locking blocks, a composite sealing structure is formed through labyrinth sealing and elastic sealing, the static pressure of a joint jointing area is reduced through the Venturi effect, the hydrogen gas leakage driving force is reduced, a multilayer leakage prevention mechanism is formed, and the sealing joint has the advantages of good sealing performance, high connection stability and suitability for high-pressure hydrogen gas conveying working conditions.

This invention relates to a multi-stage interception and automatic impurity removal wastewater treatment device, comprising: an impurity removal chamber, wherein a filter screen is provided inside the impurity removal chamber and a filter screen cleaning mechanism is provided on the outer side wall; a collection chamber, wherein an opening and closing mechanism is formed inside; and a disinfection chamber, wherein a disinfection mechanism is provided inside. The beneficial effects of this invention are: by providing a multi-stage filter screen with progressively smaller pore sizes at the top of the impurity removal chamber, the device's removal effect on solid impurities in wastewater is enhanced; by providing a filter screen cleaning mechanism, the self-cleaning ability of the filter screen is improved, solving the problems of easy clogging and time-consuming and laborious filter screen cleaning in traditional water treatment equipment, effectively improving the automation level and continuous operation capability of the device; by providing a disinfection mechanism, the air intake of the device and the probability of air ionization are increased, improving the air ionization efficiency, thereby increasing the concentration of active purification components in the disinfection gas; making disinfection more thorough and effective, and improving the disinfection effect of the device.

The present application relates to a kind of sandstone aggregate production powder and washing system;It relates to sandstone aggregate production technical field, including grinding mechanism, the import end of the grinding mechanism is fixedly connected with water pump assembly, outlet end is fixedly connected with cyclone centrifugal mechanism;Cyclone centrifugal mechanism is fixedly connected with water pump two, and the lower end of the end of cyclone centrifugal mechanism away from grinding mechanism is equipped with screening mechanism;Screening mechanism is equipped with water tank mechanism below;Multiple grinding rollers follow the quick rotation of plum blossom seat, multiple grinding rollers cooperate grinding ring, can be polished to the sandstone aggregate between grinding roller and grinding ring, remove hard impurities on sandstone aggregate by friction, cooperate with the scouring of water flow to sandstone aggregate, can remove all light and hard impurities on the surface of sandstone aggregate, improve the effect of sandstone aggregate cleaning;After sandstone aggregate cleaning work is finished, open sealing door can clean the impurities in volute feed bin one and cylinder, and it is also convenient to repair and replace grinding roller and bevel cutter through sealing door.

The utility model discloses a self-cleaning type air filter which comprises an air filter housing, a vertically-placed air filter element is installed in the air filter housing, a positioning sleeve is installed on the outer wall of the bottom of the air filter housing through an opening, the inner wall of the positioning sleeve is connected with a sliding pipe in a sliding mode, and the sliding pipe is connected with the air filter element in a sliding mode. A hollow lifting disc is fixedly arranged on the outer wall of the top of the sliding pipe, blowback air holes distributed at equal intervals are formed in the outer wall of the hollow lifting disc, and the outer walls of the blowback air holes are slidably connected with the inner wall of the air filter element. According to the utility model, gas is input into the blowback pipe through the gas guide pipe by the compressor, the gas in the blowback pipe is input into the sliding pipe through the positioning sleeve, the gas in the sliding pipe is input into the hollow lifting disc and is discharged from the blowback gas holes, and the gas can be concentrated through the hollow lifting disc to wash a specified area in the air filter element; air dispersion is avoided, and the flow speed of gas flushing the air filter element can be increased.

This utility model discloses a pharmaceutical packaging film bag, including a film bag body and an anti-drip coating nozzle. The anti-drip coating nozzle consists of a nozzle sleeve, a leakage tube, a first retaining ring, a spring, a sealing plug, a protective cap, and a tube sleeve. The nozzle sleeve is integrally formed from a cylindrical section and a disc section. The opening of the leakage tube is heat-fused and sealed to the cylindrical section of the nozzle sleeve. The sealing plug is fixedly embedded in the inner end of the cylindrical section, and the tube sleeve is fixedly sleeved on the outer end of the leakage tube. This pharmaceutical packaging film bag allows for direct application of compound calamine lotion to the affected area without the need for other tools, offering the advantage of ease of use. Compared to plastic or glass bottles, the film bag has lower operating costs and can be squeezed to accelerate the flow rate of compound calamine lotion, improving application efficiency.

The utility model provides an aeration nozzle and a preparation box, and effectively solves the problems that solid-liquid mixtures such as coal slime and sludge are easy to mix unevenly and easy to layer and deposit during storage, the aeration nozzle is easy to block and difficult to clean, and the like. An air flow channel is arranged in the aeration nozzle, the air flow channel penetrates from the tail part of the aeration nozzle to the head part of the aeration nozzle, and the air flow channel mainly comprises a nozzle inlet, a rear cavity, a throat-shaped cavity, a main body cavity and a spray hole which are sequentially arranged from the tail part of the aeration nozzle to the head part of the aeration nozzle; the diameter of the rear cavity is gradually reduced from the inlet to the outlet, and the diameter of the main body cavity is gradually increased from the inlet to the outlet. The aeration nozzles form a circle of aeration nozzle group, the aeration nozzles in the circle of aeration nozzle group are annularly and uniformly distributed, and the aeration nozzle group is mounted on the inner wall of the preparation box; and a plurality of circles of aeration nozzle groups are arranged and are sequentially distributed from top to bottom.

The application relates to the technical field of soft soil foundation treatment, and discloses a dynamic compaction device based on a static-dynamic drainage consolidation method, which comprises a moving frame, a soft soil foundation, a well point pipe inserted into the soft soil foundation, universal wheels fixedly installed at the bottom of the moving frame, and a dynamic compaction assembly arranged on the moving frame. The dynamic compaction assembly comprises a dynamic compaction part and a reinforcing part. The dynamic compaction part is located at the top of the moving frame, and a drainage part is arranged outside the dynamic compaction part. With the downward movement of a tamping plate, a lower pressing plate is driven to move downward, and then a L-shaped plate II is driven to move downward, so that the L-shaped plate II drives a fixed plug to move downward and is inserted into the soft soil foundation, thereby ensuring the stability of the whole device when the soft soil foundation is tamped. After the tamping plate moves to the uppermost position, a spring lifts a connecting plate, thereby driving the L-shaped plate II to move upward, the fixed plug can be pulled out of the soft soil foundation, and the whole device can be normally moved.

The tube-fin heat exchanger provided by this invention includes multiple stacked straight fins and multiple heat exchange tubes that penetrate the straight fins and are tightly connected to them. The outer wall of the heat exchange tubes is provided with a spiral wave structure. The peaks and troughs of this structure form micro-scale guide grooves. By making the depth of the guide grooves less than or equal to the laminar sublayer thickness of the outer wall of the heat exchange tubes, arc-shaped conical protrusions are set on the straight fins around the heat exchange tubes. The openings of the protrusions face away from the heat exchange tubes, with one end of the protrusion being a pointed tip pointing in the direction of the incoming airflow and the other end being a wide tail pointing towards the outer wall of the heat exchange tubes. In use, the pointed tip can cut the airflow between the straight fins, and the wide tail induces the formation of a longitudinal vortex that guides the heat exchange tubes to the outer wall. The longitudinal vortex scours along the guide grooves and eventually detaches from the leeward side of the heat exchange tubes. This can reduce drag, destroy the boundary layer on the surface of the straight fins and the outer wall of the heat exchange tubes, increase the flow velocity on the leeward side of the heat exchange tubes, reduce the flow dead zone, and improve the heat exchange effect.

The utility model discloses a biogas condensation dehumidification device based on a tubular heat exchange structure, which relates to the technical field of biogas dehumidification, and comprises a cylindrical shell, a plurality of heat exchange tubes are arranged in the cylindrical shell along the axial direction of the cylindrical shell, the inner wall of each heat exchange tube is provided with an anti-corrosion coating, and the outer wall of each heat exchange tube is provided with an anti-corrosion layer. The two ends of each heat exchange pipe are fixedly connected with the cylindrical shell through pipe plates, the two ends of the cylindrical shell are connected with an air inlet pipe and an air outlet pipe through reducer pipes respectively, the air inlet end of the air outlet pipe is fixedly connected with a folded plate type gas-liquid separator, and the large-diameter end of the reducer pipe connected with the air outlet pipe is connected with a drainage pipe. The two ends of the barrel wall of the barrel-shaped shell are connected with a water inlet pipe and a water outlet pipe respectively. The biogas condensation and dehumidification device based on the tubular heat exchange structure is good in condensation and dehumidification effect and long in service life, and the maintenance cost can be reduced.

The present application relates to a kind of environmental sewage treatment intelligent dosing device and control system thereof, including processing box, the front surface of processing box is fixedly connected with control panel, the upper surface of processing box is fixedly connected with guide slide plate symmetrically;The present application is through the way of mechanical and system linkage to complete automatic rationality sewage dosing treatment, and through the cooperation between components, the effect of intermittent dosing is realized, and intermittent dosing process is accompanied by reorientation of medicament discharge, which helps to increase the discharge dispersion area of medicament, and the reasonable dosing amount management and automatic area stirring positioning adjustment are realized by data analysis, according to the medicament demand of different processing areas, reasonable and targeted dosing treatment is carried out, and the dosing amount of each processing area is monitored, so that the dosing condition of each processing area can be intuitively understood, and timely management adjustment is carried out, to ensure the accuracy of dosing.