213 results about "Venturi effect" patented technology

A hot tub wall jet nozzle includes a nozzle body and a nozzle core seat. Water flows from the water inlet into the water flow channel in the nozzle body. Air enters through the air inlet of the nozzle body and reaches the first air accommodating cavity, then flows from the first air accommodating cavity to the second air accommodating cavity, and the air from the second air accommodating cavity is then mixed with the water in the nozzle core seat at the water outlet under the Venturi effect, and the mixed water and air flow is finally discharged through the water outlet. This structural arrangement allows for reduced dilution and loss of air bubbles during water flow transmission. The Venturi effect produced in this nozzle is capable of generating a greater volume of air ejection, thus enhancing the strength and effectiveness of the massage.

The invention relates to the technical field of industrial VOCs treatment, in particular to a multistage heat pump coupling microwave desorption system which comprises a microwave targeted preheating module, a heat pump gradient heating module, a low-pressure desorption environment construction module and a waste heat recovery network. The heating device is used for selectively heating a VOCs enrichment area; the heat pump gradient heating module adopts a multi-stage heat pump system, the adsorbent is heated to 130-160 DEG C from 70 DEG C in a gradient manner, and the heating rate is 8 DEG C / min; the low-pressure desorption environment construction module is used for designing a negative pressure pipeline based on the Venturi effect to form a-1.5 kPa desorption environment; and the waste heat recovery network comprises a plate heat exchanger and a heat pump evaporator and is used for realizing efficient recovery of desorption waste gas waste heat. The gradient activation composite zeolite rotating wheel and the AI dynamic regulation and control platform are matched, real-time optimization of microwave power, heat pump output and negative pressure parameters is achieved, and the device is suitable for treatment of high-concentration VOCs in the industries of coating, rubber, printing and the like.

The embodiment of the invention discloses a thermal runaway management method and system.The thermal runaway management system comprises a venturi tube and an exhaust valve, the exhaust valve is arranged on the upstream of the venturi tube, the upstream of the venturi tube communicates with the interior of a battery pack, the downstream of the venturi tube communicates with the exterior of the battery pack, and the venturi tube and the active control exhaust valve work cooperatively; when thermal runaway is detected, the exhaust valve is quickly opened, high-temperature and high-pressure gas in the battery pack is efficiently exhausted by utilizing a Venturi tube effect, and meanwhile, a multi-sensor real-time monitoring and feedback mechanism is combined, so that the response speed and the exhaust efficiency of thermal runaway management are remarkably improved, and thermal runaway diffusion is effectively inhibited; the problems that a traditional pressure release valve is lagged in response and depends on internal pressure are solved, and meanwhile the problems that in a traditional scheme, a battery pack is low in exhaust efficiency, lack of effective cooling dilution and high in secondary combustion risk are solved.

The invention relates to the technical field of batteries, and particularly discloses a double-layer liquid cooling system and a battery pack. The double-layer liquid cooling system comprises a lower-layer liquid cooling plate, a water inlet and a water outlet of the lower-layer liquid cooling plate are each provided with a water drainage nozzle, and an internal water flow channel of each water drainage nozzle is of a Venturi structure. The water flow channel of the lower water inlet nozzle of the lower-layer liquid cooling plate is arranged to be of a Venturi structure, and the flow of cooling liquid flowing to the lower-layer liquid cooling plate is increased while the flow of cooling liquid flowing to the upper-layer liquid cooling plate is reduced by utilizing the Venturi effect, so that the pressure at the upper water inlet nozzle is reduced; therefore, the situation that throttling affects flow resistance of the whole package due to sudden change of the inner diameter of the upper water inlet nozzle can be avoided, and meanwhile the leakage risk at the upper water inlet nozzle can be reduced due to the fact that pressure at the upper water inlet nozzle is reduced. Meanwhile, the lower-layer liquid-cooling plate has increased cooling liquid flow rate, so that the time for filling the lower-layer liquid-cooling plate with the cooling liquid is shortened, the heat exchange coefficient of the lower-layer liquid-cooling plate is increased, and large temperature difference between the upper and lower-layer battery cells is avoided.

The invention discloses a dustproof and anti-poison series labor protection appliance, and particularly relates to a valve cavity isolation anti-return exhaust valve structure. The mask comprises a mask shell, a double-valve-box assembly, an inter-valve isolation cavity, a valve plate positioning nail, an outer valve plate, an outer sealing opening, an inner sealing opening, an inner valve plate, a filter box clamping position and an air filter box. The double-valve-box air exhaust valve is mainly characterized in that a traditional one-way air exhaust valve is replaced with a double-valve-box assembly, an inter-valve isolation cavity is formed between an outer valve plate and an inner valve plate, and dust is blocked through the Venturi effect and the trapping effect of a low-pressure vortex area; even if dust is clamped between the outer valve plate and the outer sealing opening, the dust can be removed during next expiration, and it is guaranteed that no dust is accumulated on the edge of the inner valve plate. The problems that an existing dustproof mask, an existing gas mask and an existing mask with a valve are not tightly closed, exhaust is not smooth, and closing of a valve plate is delayed due to the fact that dust is stuck to a sealing opening are solved, and the protection performance and the wearing comfort are improved.

The application provides an atomization assembly and an atomizer, and relates to the technical field of electronic atomization. The atomization assembly is internally formed with an atomization channel. The atomization channel comprises a first part, a second part and a third part. The first part and the third part are respectively arranged at two ends of the second part. The inner diameter of the first part and the third part is greater than the inner diameter of the second part. Due to the fact that the inner diameter of the first part and the third part of the atomization channel is greater than the inner diameter of the second part, the atomization channel is formed in a big-in-the-two-ends-and-small-in-the-middle shape. Based on the Venturi effect, when the atomization assembly is working or a user is inhaling, the gas flow rate in the second part reaches a maximum value, and the static pressure reaches a minimum value. As a result, a pressure difference is formed between the inside and the outside of the second part. Based on the pressure difference, the atomization assembly has a greater adsorption force on the atomization substrate, so that the atomization substrate is more quickly introduced, thereby ensuring the sufficiency of the atomization substrate and avoiding the occurrence of the paste core phenomenon. Meanwhile, a series of problems caused by the paste core are solved.

The utility model discloses an upper air outlet type ventilation blade assembly and a ventilation window, and the upper air outlet type ventilation blade assembly comprises at least two blade groups which are distributed at intervals along the front-back direction; each blade group comprises a plurality of blades which are distributed at intervals in the vertical direction; the section of each blade is of a V-shaped structure, each blade comprises a first plate and a second plate which are sequentially arranged in the front-back direction and form an included angle, a V-shaped cavity with an upward opening is formed between each first plate and the corresponding second plate, the lower end of each first plate extends to be provided with an extension plate, and a concave cavity with a backward opening is formed between each extension plate and the corresponding second plate. A water falling hole capable of communicating the V-shaped cavity with the concave cavity is formed in the second plate piece; the air flow sent out through the blade assembly is in a rising state, the upward air outlet effect is achieved, and when the air flow passes through the extension plate, negative pressure is formed in the concave cavity through the Venturi effect, so that accumulated water flows out of the water falling hole more easily, the water drainage efficiency is improved, and the water accumulation situation is reduced.

This invention discloses a wound cleaning and nursing device for medical care, belonging to the field of medical care equipment technology. It includes a main unit, a rinsing device, a waste suction device, and a fixation device. The rinsing device generates negative pressure within a negative pressure tube using the Venturi effect, drawing in outside air and spraying a spiral water stream through a first nozzle, a guide plate, and a third nozzle. Simultaneously, a water stream containing dense bubbles is sprayed through a second nozzle, utilizing the cavitation effect to achieve deep wound cleaning. The waste suction device is mounted on the nozzle via a ball joint, using negative pressure generated by a negative pressure pump to immediately recover waste fluid. The fixation device generates ultrasonic vibrations through an energy guide plate and a transducer to assist in the removal of small debris from the wound, and, in conjunction with bandages and fixation rings, achieves stable limb immobilization. This invention solves the problems of incomplete wound cleaning and limited rinsing effects in existing wound cleaning equipment, significantly improving the effectiveness and efficiency of wound cleaning and nursing care.

The invention relates to the technical field of hydrogen bubble water preparation devices, in particular to a device and method for generating nanometer hydrogen bubble water by electrolyzing water. The device comprises a rack, and a water inlet adjusting pipe, a Venturi pipe, a flow guide pipe and a Tesla valve are sequentially fixed to the rack from left to right; the interiors of the water inlet adjusting pipe, the Venturi pipe, the flow guide pipe and the Tesla valve are communicated to form a continuous flow path, one end of the water inlet adjusting pipe is provided with a plurality of adjusting pieces which extend to an inlet of the Venturi pipe and jointly define a variable water outlet part, and the multiple adjusting pieces can be driven by a first driving mechanism to synchronously perform radial expansion and contraction movement; according to the invention, through the arrangement of the complete and progressive treatment procedures of dynamic Venturi effect primary crushing, linkage mechanical stirring secondary crushing, high-speed shearing nanocrystallization and Tesla valve collision homogenization, the concentration of hydrogen in the finally generated nano hydrogen bubbles is obviously improved; the average particle size of generated bubbles is smaller, and the particle size distribution range is more concentrated.

The utility model discloses a novel device of energy storage air cooling air duct, it includes top frame, the top frame front surface is provided with the air inlet, the top frame lower surface is fixedly connected with the mounting panel, the mounting panel side surface is fixedly connected with the air frame, the air frame inboard wall is fixedly connected with the air channel, the air channel top end is provided with the big wind hole, the air channel bottom end is provided with the small wind hole, the air channel side surface is fixedly connected with the support frame, the box body, the box body front surface is rotatably connected with the box door, the box body inboard wall is fixedly connected with the electrical frame, the electrical frame inboard wall is fixedly connected with the electrical cabin, the electrical frame side surface is fixedly connected with the energy storage frame. Through above -mentioned structure, the air channel is inclined to set, makes the front plane section of two air channels located in the middle part of energy storage battery be trapezoidal, according to venturi effect, the air flow speed inside air channel gradually accelerates from top to bottom, will not appear air flow speed gradually reduces, leads to the condition of uneven heat dissipation effect.

The application discloses a foaming injection device, a foaming device and a foaming toilet. The foaming injection device comprises a foaming injection body, which is provided with a foaming cavity, an air suction port, an acceleration hole and a foam injection port connected with the foaming cavity. The foaming solution is accelerated into the foaming cavity of the foaming injection body through the acceleration hole, so that the foaming cavity of the foaming injection body generates negative pressure and air is sucked in through the air suction port. The air is mixed with the foaming solution to generate foam. The foaming injection device of the application utilizes the Venturi effect to generate negative pressure and automatically suck in air, so that the air and the liquid are mixed to generate foam. Therefore, the foaming injection device has the advantages of simple structure, small volume, convenient installation, low cost and high foaming efficiency.

A manual water vacuum cleaner for cleaning a whirlpool spa bath or similar, comprising a suction hose with an end receiving a quick-connect adapter for coupling a corner vacuum nozzle or seat vacuum nozzle and the opposite end with a spigot coupling for assembling the accordion coupling, which can be coupled to the drainage drain of water evacuation of the hydromassage spa bath. The accordion coupling in the drainage drain, once open and suction between the diametrical narrowing provided between the drainage drain and hose configures the Venturi effect to suck up dirt accumulated on the sides, seats and bottom of the hydromassage spa bath.

The invention discloses a valve micro lip-attaching dead-cavity-free in-mask waste gas replacement structure which comprises mask belts, an air filtering mask, an exhaust valve base, an exhaust one-way sealing opening, a one-way exhaust valve plate, a telescopic adjusting pipe, a left nose exhaust pipe, a right nose exhaust pipe and the like. By adjusting the position of the exhaust unit, the exhaust one-way sealing opening is slightly attached to the lip, the nose exhaust pipe is slightly attached to the nostril, the valve plate is directly opened by means of flowing energy of exhaled air, peripheral retention air is injected by means of the Venturi effect, exhaled waste gas is completely exhausted in real time, dead space is thoroughly eliminated, and the problems of oxygen deficit, stuffiness, fogging, stinking and high breathing resistance are solved.

The invention provides an all-wind-direction blade-free wind-gathering energy-taking device. The device comprises an all-wind-direction wind-gathering acceleration mechanism and a blade-free wind-gathering energy-taking mechanism, the blade-free wind power energy taking mechanism is arranged at the throat position of the all-wind-direction wind gathering acceleration mechanism. And the power management module is connected with the bladeless wind power energy taking mechanism. The all-wind-direction wind gathering acceleration mechanism is used for gathering and conditioning incoming flow wind, particularly 360-degree all-wind-direction wind energy collection is achieved, the wind energy collection range is widened, meanwhile, the wind speed and the wind energy density at the throat position are improved based on the Venturi effect, a high-density wind energy environment is provided for reducing the oscillation starting wind speed and improving the energy taking efficiency of the energy taking device, and the energy taking efficiency of the energy taking device is improved. The output capability under the same wind speed condition is improved; vibration energy is converted into output electric energy through the blade-free wind power energy taking mechanism, management, storage and output of the electric energy are conducted through the power management module, and the problems that an existing sensor wind energy taking technology is high in starting wind speed, insufficient in wind direction adaptability, complex in structure, high in failure rate and the like are solved.

The invention discloses an electric furnace bottom blowing brick with a composite structure. The seat brick, the air brick and the Venturi gas distributor are sequentially arranged from bottom to top; a hollow channel communicated with the seating brick and the Venturi gas distributor is arranged in the air brick; wherein the air brick is a nano grain boundary reinforced magnesium aluminate spinel air brick and contains 5-8% of nano ZrO2 particles (the particle size is smaller than or equal to 50 nm), the porosity is 18-22%, and the average pore size is 25-45 microns; the seating brick is a gradient corundum-mullite seating brick, the inner layer of the seating brick comprises 90% of Al2O3, 8% of mullite and 2% of SiO2, the outer layer of the seating brick comprises 75% of Al2O3, 20% of mullite and 5% of an expanding agent, and the inner wall of the seating brick is provided with a honeycomb hexagonal groove array with the depth of 3-5 mm. By adopting the nano ZrO2 reinforced magnesium aluminate spinel material, the air brick can resist the temperature of more than or equal to 1600 DEG C, has the porosity of 18-22%, has both air permeability and erosion resistance, and prolongs the service life. When the gas flow fluctuation is larger than 5%, the flow velocity is automatically compensated to a set value + / -3% through the Venturi effect; the gas consumption is reduced.

A system for the thermal management of an external electric-power-generating nacelle equipping an electrically powered airship, the nacelle comprising electrical generation means implementing at least one turbogenerator contained in a fire containment vessel and provided with an inlet duct for turbine feed air and a flue gas exhaust duct, the system comprising ventilation means for injecting external air into the fire containment vessel, and means for discharging the ventilation air from the fire containment vessel, the means surrounding the flue gas exhaust duct so as to provide a Venturi effect for the outflow energized by the turbine flue gases.

The utility model belongs to the technical field of ammonia water preparation, and particularly relates to a multi-stage mixing device for preparing ammonia water by mixing liquid ammonia and water, which comprises a bottom plate, and an ammonia storage tank, a water storage tank and a return tank are sequentially arranged on the rear side of the top of the bottom plate from right to left. A jet mixer, a static mixer and a U-shaped pipe are sequentially arranged in the middle of the top side of the bottom plate from right to left, the jet mixer realizes high-speed hedging and mixing of liquid ammonia and water by utilizing a Venturi effect, and the static mixer further enhances turbulence disturbance through an internal spiral shunting element; the S-shaped structure of the U-shaped pipe prolongs the mixing path and ensures full contact of the two phases, meanwhile, the spiral cooling flow channel of the first cooling sleeve rapidly takes away reaction heat by increasing the contact area of a cooling medium and the mixing pipe, the partition plate of the second cooling sleeve divides the cooling cavity into two sections, and the cooling effect is good. And cooling water is guided to form vortex flow through the spiral guide vanes, so that the heat transfer efficiency is enhanced.

This invention provides a marine-mounted, servo-driven exhaust drag-reducing chimney, designed to effectively reduce exhaust back pressure of the ship's main engine and improve energy efficiency. The chimney features an integrated design, structurally connecting the exhaust and intake ducts, with an integrated electric motor and gear transmission mechanism forming its core drive unit. During operation, the system receives and processes environmental data from wind speed and direction sensors in real time. A signal processing unit then issues commands to drive the electric motor, controlling the synchronous rotation of the exhaust and intake ducts to dynamically adjust the direction of the air inlet, ensuring it is always aligned with the incoming airflow. This invention utilizes the Venturi effect to generate auxiliary suction, guiding air to flow in at high speed from the small-diameter intake vent and exit from the large-diameter exhaust vent, creating low pressure at the exhaust outlet and generating suction. This reduces exhaust drag, decreases engine fuel consumption, and improves the ship's operational efficiency.

This invention relates to the field of cobalt extraction technology, specifically to a cobalt-containing raw material extraction device, comprising a base frame with a support fixedly connected thereon. Two raw material tanks are disposed on one side of the support frame; a mounting frame is disposed on the other side of the support frame, and a mixing tank is fixedly mounted on the mounting frame. A mixing frame is rotatably connected inside the mixing tank, and multiple mesh frames are circumferentially spaced on the mixing frame. A driving component for rotating the mixing frame is provided on the mixing tank. A settling tank is fixedly disposed on the support frame, and a solenoid valve is installed at the liquid outlet at the bottom of the settling tank. This invention utilizes the Venturi effect to automatically draw in an organic phase, which is then subjected to high-pressure aqueous phase shearing within a tube to form a uniform extraction emulsion. The pressure is adjusted via a hydraulic valve to flexibly adapt to raw materials with different cobalt concentrations. After the extraction emulsion is sprayed into the mixing tank, it impacts the rotating mesh frames, achieving secondary atomization and thorough dispersion, avoiding mixing dead zones, and enhancing mass transfer.

The invention discloses a shape-preserving and resistance-reducing design method for a rotating mechanism under rotor / fuselage coupling, which comprises the following steps of: setting the slenderness ratio of a streamline shaft sleeve based on a shape resistance coefficient formula, and verifying the surface pressure distribution and the separation area of the shaft sleeve through numerical simulation to ensure that the shape resistance coefficient meets a resistance-reducing target; setting the area ratio of an outlet to an inlet of the seam based on a Venturi effect formula, so that a low-pressure area is formed in the seam to suck a wing root boundary layer and delay airflow separation; establishing an aerodynamic load and motion parameter coupling model based on an instantaneous resistance formula, analyzing flow fields under different rotation angular velocities and oblique angles through numerical simulation, and optimizing a rotation track to reduce a resistance peak value and aerodynamic torque fluctuation; the invention aims to solve the problems of airflow vortex interference, large shape resistance, high resistance peak and poor aerodynamic stability by optimizing the shape of the rotating shaft sleeve, the fuselage-wing gap structure and the wing rotating track, and improves the cruise fuel efficiency and flight stability of the aircraft.

The invention provides a novel convenient cleaning device for cleaning tableware, and relates to the field of tableware cleaning equipment, the novel convenient cleaning device comprises a device body, a cleaning agent storage barrel, a cleaning agent storage barrel and a cleaning agent storage barrel, one side of the intelligent cleaner is connected with a water inlet pipe, and the two sides of the lower portion of the intelligent cleaner are connected with a discharging pipe and a feeding pipe correspondingly. The automatic cleaning device has the advantages that automatic mixing of a cleaning agent and water is achieved based on the Venturi effect, power-on driving is not needed in the whole process, the potential safety hazard of electric shock is eradicated, and safety and universality are improved; accurate blending of water and cleaning agents in various proportions is achieved by replacing the proportion head, and the problem that the use amount is out of control due to manual pouring is solved; in the whole mixing process, direct contact with the super-concentrated cleaning agent is not needed, stimulation of high-activity components to the skin is avoided from the source, the skin barrier is effectively protected, and the use comfort is improved.

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.

Accessories for a nasal aspiration device, comprising: - an accessory body (10) suitable for grasping; wherein the accessory body comprises: - a compressed air inlet channel (16) suitable for fluid communication with a compressed air generator (200) to obtain an airflow with a positive pressure, wherein the compressed air inlet channel (16) defines a constriction (16c) to generate a Venturi effect; - a suction channel (20) extending into the constriction (16c) and in fluid communication with a mucus inlet channel (14) such that a negative pressure is generated in the mucus inlet channel (14) by the Venturi effect, suitable for suctioning the mucus; - a mucus collection chamber (30) formed in the accessory body (10) which is in fluid communication with the mucus inlet channel (14); - an end nozzle (12) arranged at a distal end of the accessory body (10) and suitable forto be inserted at least partially into a user's nostril, wherein the mucus inlet channel (14) is formed in the end nozzle, wherein the suction channel (20) runs outside the mucus collection chamber (30) and characterized in that the end nozzle (12) is removably coupled to the accessory body (10) by means of a calibrated interference, wherein the calibrated interference is selected such that the end nozzle detaches from the accessory body when a positive pressure is generated in the accessory body which is higher than a certain limit value.

The utility model discloses a portable simulation oxygen inhalation teaching demonstration device belongs to medical teaching appliance technical field. The device includes installation support, oxygen inhaler, micro air pump, venturi booster pipe and compensation bottle. The installation support is constituted by base, support rod and support assembly, and the oxygen inhaler, micro air pump, venturi booster pipe and compensation bottle are all installed on the support assembly. The airflow generated by micro air pump enters venturi booster pipe, and utilizes venturi effect to form negative pressure at the throat and communicates with compensation bottle, and finally inputs the stable airflow to oxygen inhaler. The utility model solves the problems of the existing oxygen inhaler, such as relying on fixed high pressure gas source, lacking support after being separated from wall surface and unstable oxygen bag gas supply pressure, realizes the portability of oxygen inhalation operation teaching and the simulation of flow regulation, and is suitable for nursing teaching and practical operation examination.

This invention relates to the field of desulfurization equipment and discloses a multi-stage atomizing semi-dry desulfurization device, including a feed hopper, a Venturi reactor connected to the feed hopper, a flue gas conveying pipe connected to the top of the Venturi reactor, an isolation conveying tank located on the side of the Venturi reactor, a bag filter dust collector connected to the bottom of the isolation conveying tank, a nozzle connecting block located at the bottom of the Venturi reactor, and an adjusting device located at the end of the nozzle connecting block at the bottom of the Venturi reactor. This invention uses a trigger element inside the adjusting device to detect falling solids, then uses a centrifugal semi-circular component to crush the falling objects, and uses a venting component to drive the entire device to rotate, achieving separation of large solid particles. Smaller powder particles continue to enter the Venturi reactor for reaction, allowing the powder to re-enter the interior of the Venturi reactor through the venting component, forming the Venturi effect again and achieving a multi-stage atomization effect.

The utility model provides a kind of electrochemical reduction circulating water hardness treatment equipment, it is related to processing equipment technical field, including processing jar, the inner wall of processing jar is fixedly installed with round leakage plate, the top of round leakage plate is equipped with electrochemical component, and the electrochemical component includes honeycomb metal plate, and the top of honeycomb metal plate is fixedly installed with conical expansion port.The utility model, by setting electrochemical component, the honeycomb metal plate design of equipment, cooperate the thread groove of inner wall, make water flow form rotating vortex, increase more than 30% contact area of flat plate electrode, substantially improve the electrolytic conversion efficiency of calcium, magnesium ion.Simultaneously, the local low pressure area formed by venturi effect of conical structure accelerates precipitated particle to separate from electrode surface, avoids electrode incrustation, guarantees electrochemical reaction to continue efficiently, can quickly reduce circulating water hardness, effectively solve the scale formation problem, improve the operation efficiency of circulating water system.

The utility model relates to the technical field of drying devices, in particular to a colostrum immunoglobulin low-temperature drying device which comprises an upper-section tower body, and an extension drying assembly is arranged on the inner side of the upper-section tower body. The extended drying assembly comprises a spiral flow guide plate fixedly connected with the top of the inner wall of the upper-section tower body, and flow equalizing holes are formed in the inner side of the spiral flow guide plate. According to the utility model, through the arrangement of the extended drying assembly, irregular eddy current of the upper section of the tower body is converted into stable spiral airflow, the droplet retention time is prolonged, and the diversion cone forcibly divides central airflow, forces the airflow to deflect towards the tower wall, eliminates the short circuit phenomenon of the central airflow, and prolongs the droplet retention time; and through the arrangement of extending the drying assembly again, the flow guide cone and the annular spoiler jointly form a spiral airflow track, the fogdrop bypassing distance is increased, the Venturi effect is generated through the through hole gradual shrinkage type hole channel design, and turbulent mixing is enhanced while the airflow speed is reduced.

The invention relates to an integrated nursing device for eliminating thrombus in a PICC (Peripherally Inserted Central Catheter) by ultrasonic waves, which belongs to the technical field of medical instruments and comprises a handheld host and a disposable treatment head. A venturi negative pressure generating unit and a flushing fluid power unit are integrated in the handheld host. The disposable treatment head comprises a multi-section flexible connection structure capable of self-adapting to bending of the catheter, a miniature ultrasonic suppository breaking unit capable of achieving cross interference focusing based on a single crystal wafer and a reflection cavity, and a multi-layer coaxial cavity structure capable of achieving synchronous suction and flushing. When the device works, ultrasonic energy directly acts on thrombus in a catheter to efficiently crush the thrombus, meanwhile, fragments are removed in time through negative pressure generated by the Venturi effect, and visual state indication is provided through the mechanical feedback unit. The problems that a traditional method is low in efficiency, complex in operation and asynchronous in fragment removal are solved, and safe, efficient and convenient integrated catheter thrombus removal is achieved.

The invention relates to the technical field of port ship unloading equipment, in particular to a grab ship unloader hopper matched with a Venturi dust removal system. Comprising a hopper main body structure and a Venturi tube connecting pipeline. The hopper body structure is fixed to a ship unloader support supporting beam and comprises a sea side material receiving plate, two wind-shield walls, a land side material blocking plate and a hopper body. When the seaside material receiving plate and the landside material blocking plate are closed, the seaside material receiving plate and the landside material blocking plate form a four-side enclosure structure above the bucket body together with the two wind-shield walls; one end of the venturi tube connecting pipeline is connected with the wind-shield wall and communicated with the interior of the enclosure, and the other end is connected with the venturi wet dust collector. During unloading, the falling seaside receiving plate receives materials falling from the grab bucket, and waste and pollution caused by the fact that the materials enter the sea are avoided; the grab bucket is limited in a semi-closed area by the enclosure structure; negative pressure is generated through the Venturi effect, unloading dust is sucked into the Venturi tube, efficient dust removal is achieved through treatment of the dust remover, flying dust pollution is effectively reduced, and the port environment-friendly operation requirement is met.

The utility model discloses a food processing stirring device in the technical field of food processing. The food processing stirring device comprises a tank body, fastening plates are welded to the left side and the right side of the tank body, a feeding port is formed in the upper portion of the right side according to a preset layout and provided with a feeding flange, and a discharging port is formed in the lower portion of the left side according to the material discharging principle and provided with a discharging flange. The fastening plates at the left end and the right end are axially connected with the main rotating shaft, the rotating axis of the main rotating shaft coincides with the axis of the tank body, spiral rotating blades are installed on the main rotating shaft, and mixing plates are arranged between the blades. A dual-purpose high-pressure spray head designed based on fluid mechanics is arranged at a mixing plate, a gas injection mode is switched during stirring, the spray head sprays high-pressure gas, and a negative pressure area is formed on the periphery based on the Venturi effect to drive materials to flow. For easily damaged raw materials such as fruit grains in jelly raw materials, the direct mechanical action of the stirring blades can be reduced, the fruit grains are prevented from being smashed or damaged, the original taste and appearance of food are kept, the processing quality of food containing special raw materials is improved, and the application range of the device is widened.