450 results about "Venturo" patented technology

The invention provides a negative pressure suction dust removal device based on a Venturi effect, and belongs to the field of coal mine dust removal. The problems that an existing dust removal device suitable for the field of coal mine dust removal is too large in size and mass, difficult to move, large in noise, high in daily maintenance cost and the like are solved. The device comprises a box body, a water power fan, a Venturi tube, a desilting assembly, a counter-rotating fan, a filtering cabin and a water tank, wherein an air inlet pipeline, a settling cavity, an air duct and an air outlet pipeline are sequentially arranged in the box body; the hydrodynamic fan is arranged at the inlet end of the air inlet pipeline; the input end of the Venturi tube is communicated with the air inlet pipeline, and the output end is communicated with the settling cavity; the desilting assembly is arranged below the air duct; the counter-rotating fan is arranged in the air duct and is positioned between the settling cavity and the filtering cabin, and the filtering cabin is communicated with the air outlet pipeline; and the water tank is communicated with the filtering cabin and is also communicated with a water inlet of the hydrodynamic fan. The dust removal device is simple in structure, small in size and mass, convenient to move, low in noise and low in daily maintenance cost.

The utility model discloses a venturi multistage gas-liquid mixer with parallel jet nozzles, which comprises a liquid inlet pipe, an air suction chamber, a venturi pipe contraction pipe section, a venturi pipe throat pipe section and a venturi pipe diffusion pipe section which are connected in sequence, and a plurality of air inlet pipes are uniformly arranged on the same circumference of the outer side wall of the air suction chamber; seven liquid inlet jet spray pipes are arranged in the air suction chamber, and inlets of the seven liquid inlet jet spray pipes are jointly connected with a liquid inlet pipe. According to the utility model, the problem that gas and liquid cannot be fully mixed into a uniform phase due to low quality of generated bubble groups in the prior art is solved.

The invention discloses a gas dissolving device for generating micro-nano bubbles by using a gas-liquid double-high-pressure jet method, which comprises a venturi tube body for generating micro-nano bubbles, a water inlet pipe is mounted at one end of the venturi tube body, a gas inlet pipe capable of preventing liquid from flowing back is mounted at a throat pipe of the venturi tube body, and a gas outlet pipe capable of preventing liquid from flowing back is mounted at the other end of the venturi tube body. A cutting blade for crushing and refining micro-nano bubbles is mounted in the Venturi tube body, and a detachable porous membrane is also mounted in the Venturi tube body. When liquid flows through the contraction section of the venturi tube at a high speed, the flow speed is increased, the pressure is reduced, negative pressure is generated, external gas is sucked into the liquid under the suction of the negative pressure, then the liquid and the gas are fully mixed in a pipeline and broken into micro-nano bubbles, and the micro-nano bubble generator is simple in structure, low in cost, capable of continuously working and capable of effectively improving the production efficiency. And the generated micro-nano bubbles can meet the requirements of particularly fine occasions.

The venturi tube comprises a tube body and a base, the tube body comprises a throat portion, a contraction section and a diffusion section, positioning rods are fixedly connected to the bottom of the contraction section and the bottom of the diffusion section respectively, a filter groove is formed in an end opening of the contraction section, a filter plate is installed in the filter groove, and the base is fixedly connected with the base. A filter screen is installed on the filter plate, a pair of positioning cylinders are fixedly connected to the top of the base, and a heat conduction assembly and an air cooling assembly are installed on the two sides of the base correspondingly. The venturi tube is good in heat dissipation effect, can effectively avoid the situation that normal work of the venturi tube is affected due to the fact that heat dissipation is not timely enough when the venturi tube works in a high-temperature environment, and can filter airflow before the airflow enters the contraction section so as to remove dust and particulate matter in the airflow, thereby effectively avoiding blockage caused by the fact that the dust and the particulate matter are gathered at the throat, and improving the service life of the venturi tube. Meanwhile, abrasion of dust and particles to the inner wall of the pipe body is also avoided.

The utility model provides a multi-runner cavitation Venturi tube, which belongs to the technical field of pipelines and comprises a tube body, the tube body comprises a medium inlet and a medium outlet, a first runner is arranged at one end, close to the medium inlet, of the tube body, a second runner is arranged at one end, close to the medium outlet, of the tube body, and the first runner is communicated with the second runner. A plurality of venturi flow channels are arranged between the first flow channel and the second flow channel, are communicated with the first flow channel and the second flow channel, and are uniformly arranged along the circumferential direction of the pipe body; according to the utility model, a multi-runner structural design is adopted, so that fluid enters the venturi in a dispersed and balanced manner, the cavitation energy is reduced, and the noise is reduced; meanwhile, due to the multi-runner balance design, mutual interference and offset of vibration are achieved, and the overall vibration amplitude of equipment is reduced; and secondly, compared with a single-flow-channel cavitation Venturi tube and a multi-flow-channel cavitation Venturi tube, the cavitation phenomenon is facilitated, the structure is compact, the weight is light, and the anti-seismic requirement of a pipeline and the design of a supporting structure are facilitated.

A ceramic pressure-flushing apparatus includes a toilet chamber; a lower jet nozzle arranged at a lower flushing port, wherein the lower jet nozzle includes a sleeve tube arranged in a sidewall of a water seal recess, a venturi tube is installed inside the sleeve tube, and a negative pressure port is formed between an outer wall of the venturi tube and an inner wall of the sleeve tube; at least one water mixing area arranged on an outer peripheral surface of the sleeve tube and in communication with the water seal recess through the negative pressure port; and a water supplement structure in communication with the water mixing area, wherein after pressurized water flows into the venturi tube, a negative pressure is formed at the negative pressure port, and water in the water supplement structure is sucked to flush down waste.

The utility model provides a micro-nano bubble generator. The micro-nano bubble generator comprises three units, the first unit is one or a group of premixing nozzles and is used for sucking gas, realizing atomization of liquid and gas and increasing the specific surface area; the second unit is a Venturi tube, after the second unit is communicated with the first unit, a throat tube of the second unit is a multi-layer multi-tube Venturi tube and is communicated with external gas through a gas guide tube, the gas passes through the gas guide tube and a gas chamber and is sucked into the multi-hole multi-tube in each layer and the middle along a gas path, and gas and liquid move relatively in the gas guide tube and the gas chamber, so that full mixing and fine crushing are realized; and the third unit is communicated with the second unit and is a group of mixers, the gas and the liquid are further mixed in the third unit, the generation of the micro-nano bubbles is optimized, the mixing time is prolonged, and the bubble breaking capability of the generator is improved. The utility model belongs to the field of chemical reaction equipment, further dissolution of bubbles and multiple times of fine crushing of the bubbles are realized through the arranged micro-nano bubble generator, the volume of the generated bubbles is smaller, and the micro-nano bubble generation efficiency is improved.

The utility model discloses a novel venturi mixer for mixing waste gas, which comprises a venturi tube, and the venturi tube comprises a contraction tube, a throat straight tube and an expansion tube which are connected in sequence; the four-way pipe comprises a main pipe and branch pipes which are symmetrically arranged on two sides of the main pipe and are communicated with the main pipe; the air suction port end of the main pipe air channel is connected with the air inlet end of the shrinkage pipe. An injection pipe is arranged in the throat straight pipe; the outer side of the expansion pipe is sleeved with a combustion-supporting pipe; the end, close to the throat straight pipe, of the combustion-supporting pipe is in welded sealing connection with the expansion pipe, the other end of the combustion-supporting pipe is an open end, a bundling opening is formed in the end of the open end, and first rotational flow blades are evenly arranged on the circumference of the inner wall of the bundling opening at intervals; the device is compact in structure, normal-pressure or low-pressure waste gas and combustion-supporting gas can be fully mixed, the mixing effect is good, supercharging equipment does not need to be additionally purchased, and the waste gas treatment cost of enterprises can be reduced.

The invention relates to the field of water pollution abatement, in particular to an underwater micro-nano bubble generator and a using method thereof.The underwater micro-nano bubble generator comprises a bubble cutting pipe, a bubble cutting generating device is arranged in the middle of the bubble cutting pipe, and an erecting fixing plate is arranged at the front end of the bubble cutting pipe; a plurality of first venturi tubes are arranged on the erected fixing plate, each first venturi tube comprises a first liquid inlet section, a first compression section and a first expansion section, a water passing pipe is connected between the first expansion section and the bubble cutting tube, and an air inlet which is the same as the interior of the first venturi tube is fixedly formed in the first venturi tube; and a second Venturi tube is fixedly mounted at the rear end of the bubble cutting tube, so that the problems that a micro-nano bubble generator in the prior art is relatively high in cost, water and gas cannot be preliminarily mixed before bubble cutting, and the damage resistance is poor can be solved.

The invention provides a venturi tube abrasion automatic compensation early warning method, and relates to the technical field of intelligent control, the method comprises the following steps: establishing a finite element model of a venturi tube, and defining attributes of a venturi tube material in the finite element model, the attributes of the venturi tube material comprising an elastic modulus, a Poisson's ratio and a density parameter; according to the finite element model, finite element analysis is carried out to obtain a finite element analysis result, and according to the finite element analysis result, a key area where the Venturi tube is abraded in the working process and a potential failure mode are determined; and according to a finite element analysis result and historical use data, establishing a wear prediction model to predict wear conditions of the Venturi tube under different working conditions. Through finite element analysis, an abrasion prediction model and real-time monitoring, automatic compensation, early warning and replacement of abrasion of the Venturi tube are achieved, and the spraying efficiency and stability are ensured.

The invention discloses an alternate aeration venturi tube type micro-nano bubble generation device, which comprises a venturi jet device, a double-feedback channel fluid oscillator is communicated with the throat part of the venturi jet device, the top of the double-feedback channel fluid oscillator is an air inlet, and the bottom of the double-feedback channel fluid oscillator is a first outlet and a second outlet; a first annular porous material ring and a second annular porous material ring are installed at the positions, corresponding to a first outlet and a second outlet of the double-feedback-channel fluid oscillator, of the throat portion of the Venturi jet device respectively, the first outlet is communicated with the first annular porous material ring, and the second outlet is communicated with the second annular porous material ring. A flexible film is arranged in a divergent section of the Venturi jet device, and a rotational flow impeller is installed in a convergent section of the Venturi jet device. Interval ventilation can be achieved through the double-feedback-channel fluid oscillator, the double-feedback-channel fluid oscillator is combined with the annular porous material ring, and bubble gathering is restrained; meanwhile, under the synergistic effect of rotational flow shearing and film dynamic breaking, micro-nano bubbles are generated.

The invention provides a gas-liquid two-phase flow coaxial mixing cavity device. The gas-liquid two-phase flow coaxial mixing cavity device comprises a first Venturi tube, a second Venturi tube and a quick connector, the throat diameter of the second Venturi tube is smaller than that of the first Venturi tube; the diffusion section of the second venturi tube is connected with the contraction section of the first venturi tube through a quick joint; the contraction section of the second Venturi tube is connected with a straight tube; the inlet section of the second Venturi tube is connected with high-pressure water, the inlet section of the first Venturi tube is connected with an inert gas pipeline, and the inlet section of the straight tube is connected with a high-power foaming liquid pipeline; and a turbulent flow mixing device is arranged in a throat of the first Venturi tube. According to the device, the pulsation phenomenon in a pipeline caused by improper flow or pressure design or control of air flow and liquid flow in the using process is avoided, foam liquid is efficiently mixed and released, the device is easy to deploy, flexible in response and convenient to operate due to the compact and light design, and the efficient maintenance and upgrading capacity is guaranteed through the modular structure.

The invention discloses an automatic sampling device for on-line monitoring of ground powder granularity, and relates to the field of carbon material powder preparation and testing, the automatic sampling device comprises a motor, a sampling tube, a screw rod and a first hoop; one end of the sampling tube is fixedly connected to the motor; the screw rod is located in the sampling tube, and one end of the screw rod is also fixedly connected to the motor; the sampling tube is connected with the motor connecting part; one end, close to the first hoop, of the sampling pipe is fixedly connected; the other end of the through pipe is connected with one end of the Venturi pipe; the other end of the Venturi tube is connected with one end of the three-way tube; the other two ends of the Venturi tube are respectively connected with a compressed air tube and a material tube; the compressed air generates negative pressure through the Venturi tube, so that material sampling is facilitated, the sampling efficiency is improved, and the sampled material is ensured to meet the concentration required by sample testing; the device adopts the motor as a power source, and the sampling tube and the screw are driven to rotate through the motor, so that the sampling accuracy and efficiency are improved.

A full-circumferential wind gathering device comprises a wind gathering structure, a Venturi tube acceleration structure and a wind blocking structure. The air collecting structure comprises a body, a plurality of upper-stage guide vanes and a plurality of lower-stage guide vanes, the upper-stage guide vanes and the lower-stage guide vanes are arranged on the body and arranged in a staggered mode, the lower end of the body is connected with the upper end of the Venturi tube acceleration structure, and the air blocking structure is fixed to the lower end of the Venturi tube acceleration structure. Wind is blown from the direction parallel to the ground, captured by the upper blades and guided into channels between the upper blades on the windward side, after airflow enters the channels, the speed is gradually decreased, airflow kinetic energy is converted into pressure energy, and the pressure energy is gathered and compressed at the arc-shaped concave position of the inner taper pipe to form an inlet high-pressure area. According to the two-stage staggered type inlet guide vane structure and the layout optimization method thereof, two-stage staggered type key improvement is conducted on the inlet guide vane structure, adaptive adjustment is conducted on the overall structure layout of the inlet guide vane structure, all-circumferential incoming flow convergence is achieved, and the wind gathering acceleration effect of the device is improved.

The invention relates to a venturi separator, which is characterized in that the venturi separator comprises a venturi tube and a liquid phase collecting tube surrounding at least one part of structure of the venturi tube, and the venturi tube comprises the following sections which are communicated in sequence: an optional equal-diameter section, a reducing section, a throat part and an expanding section, the venturi separator is provided with a gas phase inlet, a liquid phase inlet, a liquid phase outlet and a gas phase outlet, an opening is formed in the side wall or the tail end of the expanding section of the venturi tube, and the opening leads to the liquid phase collecting tube, so that a liquid phase leaves the venturi tube and enters the liquid phase collecting tube under the action of centrifugal force. The invention also relates to the use of such a Venturi separator in a chemical process.

The invention discloses a workshop air purification dehumidifier, and belongs to the technical field of dehumidification, the workshop air purification dehumidifier comprises a machine body, the machine body is provided with a through air cabinet pipe, the air cabinet pipe is internally provided with a ventilation pipe, one end of the air cabinet pipe is provided with a fan matched with the ventilation pipe, the other end of the air cabinet pipe is provided with an air inlet, and the air cabinet pipe is internally provided with a transition mechanism; and a pre-cleaning mechanism is arranged in the ventilation pipe. According to the device, through the passing groove defined by the air inlet and the adjusting blocks and the design of multiple sections of different diameters of the ventilation pipe, a section of Venturi pipeline with the inlet shrunk and then gradually enlarged is formed from the air inlet to the ventilation pipe, on the premise that the power of the fan is not increased, the air inlet flow is accelerated, kinetic energy is converted into negative pressure energy through the Bernoulli effect, and the energy efficiency is improved. The high-speed low-pressure area of the throat remarkably increases the suction force at the inlet of the air inlet, and the suction efficiency of heavy impurities such as water vapor suspended in a workshop is improved, so that the overall purification efficiency is improved.

The invention discloses a self-inspiration inclined section type venturi stirring paddle which comprises a hollow main shaft, a plurality of venturi tubular paddle blades are annularly arrayed on the outer wall of a gas cavity at the bottom of the hollow main shaft, each venturi tubular paddle blade sequentially comprises a contraction section, a throat part and a diffusion section in the fluid direction, an inclined section is formed in the pipe wall of each contraction section, and the inner wall of each contraction section is provided with a gas inlet. The oblique section cutting plane extends to the upstream of the throat part from the inlet end face of the contraction section, and a mounting included angle is formed between the axis of the Venturi tubular paddle and the axis of the hollow main shaft. Under the flow guide effect of the inclined section cutting plane, liquid is efficiently entrained and sucked into the contraction section; in the throat area, external air is continuously sucked in through the connecting pipe and is instantly sheared into fine and dense bubble groups by the high-speed liquid flow; meanwhile, due to the existence of the fixed mounting included angle, the gas-liquid mixture sprayed out of the diffusion section presents an obvious inclined jet flow form, and the gas-liquid mixture flows downwards and radially in a combined manner under the leading action of the gas-liquid mixture, so that a bubble group is effectively conveyed to the lower part and the peripheral area of the kettle body.

The invention discloses a water outlet device, shower equipment, a control method, a control device and a storage medium, and relates to the technical field of shower equipment.The water outlet device comprises a shell, a first pipeline and a second pipeline, the shell is provided with a water inlet end and a water outlet end, and the first pipeline and the second pipeline are communicated with the water inlet end and the water outlet end correspondingly; the second pipeline comprises a first pipe section and a second pipe section which are connected with each other, the first pipe section and the second pipe section are designed to be venturi pipes, the second pipeline is further provided with a first through hole used for sucking cleaning liquid and a second through hole used for sucking air, and by arranging the first pipeline and the second pipeline, the pressurization effect can be considered, it is guaranteed that the water outlet flow is large, and the service life is prolonged. And a power device for pushing the cleaning liquid is not needed, so that the manufacturing cost can be reduced.

The invention relates to an extractor hood and a control method thereof.The extractor hood comprises a machine shell and a draught fan arranged in the machine shell, an oil fume parameter detector is arranged in the machine shell and comprises an optical signal sensor, and the oil fume parameter detector further comprises a Venturi tube and a vortex generator enabling fluid to generate vortex motion; the swirl generator is arranged in the Venturi tube and is adjacent to the inlet end of the Venturi tube; and the optical signal sensor is positioned at the downstream of the airflow direction of the swirl generator. According to the range hood, oil smoke concentration and airflow speed detection can be achieved at the same time without an additional flow sensor, separation of oil smoke and air is increased through the spiral flow generator, the detectability of oil smoke changes is further improved through Venturi acceleration, spiral precession of the vortex core around the axis also strengthens rotary separation of air and oil smoke, and the detection efficiency is improved. The action intensity of oil smoke on light is enhanced, so that the detection of small smoke is expanded more conveniently, and the purposes of wide measuring range, high linearity and more reliable detection are achieved.

The utility model discloses a distiller heating rectification device which comprises a distiller main body, a circulating pipe fixedly connected to the lower side wall of the distiller main body, a reboiler fixedly connected to one end of the circulating pipe, a heating assembly installed inside the reboiler, a connecting pipe fixedly connected to the upper side wall of the reboiler, and a heating assembly installed inside the connecting pipe. A Venturi tube is fixedly connected to the upper end of the connecting tube, and a connecting neck, a liquid outlet and a liquid inlet are formed in the Venturi tube; the upper side wall of the distiller main body is fixedly connected with a first gas outlet pipe, one end of the first gas outlet pipe is fixedly connected with a condenser, and the output end of the condenser is fixedly connected with a backflow device. According to the utility model, the venturi tube can effectively promote the mixing of heating liquid and reflux liquid, and enables the mixed liquid to be filled with a large number of fine bubbles, so that the heating efficiency of the distiller can be effectively improved, the mixing speed of raw materials is accelerated, and the raw materials are effectively and uniformly heated.

According to the technical scheme, the venturi tube comprises a venturi tube body and a dehumidifier, the venturi tube body is formed by sequentially splicing an inlet section, a gradually-shrinking section, a throat part and a gradually-expanding section, three introduction tubes are all connected with the throat part, and the three introduction tubes are arranged at 60-degree intervals in the circumferential direction; the three first pipe rows and the two second pipe rows of the dehumidifier are arranged on the diverging section and are alternately arranged at equal intervals in the axial direction of the diverging section. The Venturi tube has the advantages that boiler flue gas and carbon capture absorption liquid are mixed through the Venturi tube body, meanwhile, the dehumidifier is installed on the divergent section, on one hand, liquid drops in the flue gas can be condensed and flow to the drainage groove along the bottom of the divergent section through the dehumidifier, on the other hand, waste heat in the flue gas can be absorbed, and the carbon capture absorption liquid can be recycled. Waste heat of smoke heats absorption liquid in the first pipe row and the second pipe row, follow-up absorption reaction is facilitated, the structure is simple, the manufacturing cost is low, operation and maintenance are convenient, and the high application prospect is achieved.

The invention discloses a superfine powder ball mill with reduced wear, which relates to the technical field of ball mills, including a mill cylinder and an expansion component, wherein the inner walls on both sides of the mill cylinder are provided with expansion components, and the expansion components include side grooves, buffer pads, shields, sliders, springs, connecting rods, stop washers and locking nuts. During the use of the invention, the Roots blower generates a high-pressure air flow and generates a negative pressure when passing through the venturi tube, and the top of the venturi tube is further connected to the discharge end of the mill cylinder through a storage bin to realize pneumatic conveying of powder materials. The present application is provided with a sieve barrel on the inner side of the discharge liner, and the gap between the side walls of the sieve barrel is less than the powder particle threshold of the grinding material, so that the powder raw materials entering the storage bin from the mill cylinder can be preliminarily screened, and the powder raw materials that do not meet the particle size cannot pass through the sieve barrel and are retained in the mill cylinder until they are completely crushed, which can reduce the steps of subsequent material sorting and re-grinding, and is more efficient and energy-saving.

The utility model relates to a bubble water generating device and a water purifier, which comprise a shell with a water inlet end and a water outlet end, and are characterized in that a bubbling piece is arranged on a water flow path between the water inlet end and the water outlet end of the shell, the bubbling piece comprises a venturi tube, the inlet end of the venturi tube is hermetically connected to the water inlet end of the shell, and the outlet end of the venturi tube is hermetically connected to the water outlet end of the shell. The outlet end of the Venturi tube is an outflow channel for water flow clamping microbubbles, and in addition, an air inlet is further formed in the side wall of the inlet end of the Venturi tube, so that air is sucked into the Venturi tube to generate the microbubbles under the action of local vacuum generated by the Venturi tube. The air purifier has the advantages that the Venturi tube capable of sucking air into the shell of the purifier is arranged, so that water flow can form more microbubbles, and the air purifier has the effect of being more compact in structure.

According to the transformer cooling system provided by the invention, transformer oil led out from the transformer main body sequentially flows into the circulating oil pump and the Venturi tube through the oil outlet pipe. The circulating oil pump can provide strong power for circulation of the transformer oil, and the Venturi tube enables the transformer oil to be in a turbulent flow state. And then, the transformer oil in the turbulent flow state enters the heat dissipation device, and efficient heat dissipation treatment is carried out. And the transformer oil subjected to heat dissipation stably flows back to the transformer main body through the oil return pipe, so that a complete heat dissipation cycle is formed. In the system, through cooperation of the circulating oil pump and the Venturi tube, the circulating flowing speed of transformer oil is remarkably increased, the transformer oil can pass through the heat dissipation device at a higher speed, a boundary layer between hot oil and the surface of a heat medium channel of the heat dissipation device is effectively damaged, and therefore the heat transfer efficiency is improved, and the heat dissipation efficiency is improved. Therefore, heat can be conducted to the surface of the heat dissipation device more quickly, and the heat dissipation efficiency of the whole heat dissipation system is further improved.

The utility model relates to the technical field of sub-packaging of arsine, and discloses a dry tail gas treatment device for sub-packaging of arsine, which comprises a Venturi tube arranged above a sub-packaging panel, and the gas outlet end of the Venturi tube is communicated with at least two main adsorption barrels in series through pipelines. A pipeline between the Venturi tube and each main adsorption barrel is communicated with a standby adsorption barrel through an automatic valve, the standby adsorption barrels and the main adsorption barrels are arranged in parallel, the lower part of the emergency adsorption barrel is communicated with a fan, and the outlet end of the fan is matched with the pipeline through the automatic valve to be communicated with a discharge port. According to the utility model, by arranging the standby adsorption barrel and the emergency adsorption barrel, when the main adsorption barrel is blocked or has other faults, an adsorption effect can be realized, and by arranging the silane detector and the differential pressure gauge, the concentration or differential pressure of arsine at the outlet pipeline can be monitored in time, and the standby adsorption barrel can be switched in time; therefore, the adsorbent in the main adsorption barrel can be replaced in time.

An information handling system may include a processor, a memory device, a video display device, and a PMU. The information handling system further includes a venturi nozzle cooling system exhaust vent including a base chassis including a top cover to form a first portion upper part of a venturi nozzle and a bottom cover to form a second portion lower part of the venturi nozzle at an exhaust vent at a rear wall of the base chassis and an airflow producing device, operatively coupled to the PMU and processor, to pass air from within the base chassis and through the venturi nozzle at the exhaust vent formed by the c-cover and d-cover to accelerate airflow away from the video display device.

The invention discloses a Venturi type micro-droplet generation device and a micro-droplet generation method thereof, and relates to the technical field of liquid-liquid heterogeneous reaction devices. The device comprises a venturi tube and a feeding tube, the venturi tube is used for conveying a first liquid phase, the venturi tube is internally provided with a venturi flow channel of a cavity structure, the venturi flow channel is divided into a contraction section, a throat pipe and an expansion section which are sequentially communicated, a feeding port is formed in the side wall of the throat pipe, a partition plate is arranged in the throat pipe, the height of the partition plate is equal to the length of the throat pipe, and the feeding port is communicated with the venturi flow channel. The interior of the throat pipe is divided into a plurality of flowing cavities by the partition plates, and each flowing cavity is communicated with the feeding hole; the feeding pipe is used for conveying a second liquid phase, and the feeding pipe is communicated with the flowing cavity through the feeding opening, so that the first liquid phase and the second liquid phase collide with each other in the flowing cavity and are sheared to generate micro-droplets. The partition plates are arranged to divide the throat pipe into a plurality of flowing cavities, and the turbulence and shearing degree in the throat pipe is improved by fully utilizing the wall surface effect.

The utility model provides a stirring paddle and a stirrer, and relates to the technical field of stirrers, the stirring paddle provided by the embodiment of the utility model comprises a driving shaft and a venturi tube, the venturi tube is connected with the driving shaft, and the driving shaft is used for driving the venturi tube to rotate; the Venturi tube comprises an inlet and an outlet, and the area of the inlet is larger than that of the outlet; the outlet and the inlet are sequentially formed in the rotating direction of the driving shaft, so that after the stirring paddle rotates, liquid enters from the inlet and flows out from the outlet; an air inlet hole is formed in the side wall of the Venturi tube and is used for being connected with an air source.

The invention relates to the technical field of IMR process membrane production equipment, in particular to a membrane dust removal device for an IMR process, which comprises a main body assembly, a base, a conveying bed and a mounting frame, the conveying bed and the mounting frame are arranged at the end part of the base, and a driving motor and a transmission box are further arranged on the outer wall of the mounting frame; the dust removal assembly comprises a cleaning roller, the cleaning roller is arranged at the end of the conveying bed, an ion bar is further arranged on the outer wall of the cleaning roller and used for eliminating static electricity, and a dust collection component is further arranged at the end of the conveying bed and installed at the other end of the cleaning roller; the cleaning roller is in floating installation under the action of the first elastic piece through cooperation of the moving block, the sliding block and the moving guide rail, and the cleaning roller can adapt to surface fluctuation of the diaphragm and keep constant micro-pressure contact; strong negative pressure is formed in the adsorption roller through the air supply pipe and the Venturi pipe and is conducted to the surface of the non-woven fabric through the negative pressure cavity and the adsorption holes, non-contact adsorption of the membrane is achieved, and it is ensured that dust is efficiently captured and the membrane is not damaged.

The invention provides a powder dissolving kettle and a powder dissolving method. The powder dissolving kettle comprises a dissolving kettle body, a Venturi tube ejector and a top saturated steam ejection part, the venturi tube ejector is connected with the side wall of the dissolving kettle body, and the axis of the venturi tube ejector is parallel to the horizontal plane; the venturi tube ejector comprises a first saturated steam inlet end and a powder inlet end which are arranged outside the dissolving kettle body, and a mixed material outlet end connected with the side wall of the dissolving kettle body; the top saturated steam jet part is arranged at the top of the dissolving kettle body. According to the invention, the Venturi tube ejector is adopted to suck powder and enable the powder to tangentially enter the dissolving kettle body, so that a relatively large centrifugal force is generated, and a good powder dispersing effect is formed; in the mixing process of the powder and the saturated steam in the dissolving kettle body, mixing of the powder and the saturated steam is promoted, the solubility of the powder is improved under heating of the saturated steam, and on the third hand, the dissolving efficiency of the powder in the saturated steam is improved.