238 results about "Venturo" patented technology

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 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 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 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.

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.

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 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.

The high-pressure cleaning machine comprises a shell and a plunger pump, the plunger pump is arranged on the shell, the high-pressure cleaning machine further comprises a Venturi tube, a siphon guide pipe and a flow adjusting device, a water channel, a cleaning liquid box and a mixing box are arranged on the shell, the two ends of the water channel are communicated with a water outlet of the plunger pump and the mixing box respectively, and the Venturi tube is installed and communicated in the water channel; the siphon guide pipe is installed on the shell, one end of the siphon guide pipe is installed and communicated with the throat portion of the Venturi tube, the other end of the siphon guide pipe is installed and communicated with the bottom of the cleaning liquid box, a first one-way valve is arranged in the siphon guide pipe, an impeller is rotationally connected into the mixing box, and the flow adjusting device is arranged on the siphon guide pipe and used for adjusting the suction amount of cleaning liquid. By means of the Venturi effect, when high-pressure water flow passes through the throat portion of the Venturi tube, the flow speed is increased, the pressure intensity is reduced, negative pressure is formed, the cleaning liquid is sucked into the water channel from the cleaning liquid box through the siphon guide pipe, automatic mixing of the cleaning liquid is achieved, the cleaning efficiency is improved, and the high-pressure cleaning machine is convenient to use.

The utility model provides a foam shower head which comprises a switching valve assembly, a handle and a body, a water inlet channel is arranged in the handle, and a first water outlet channel, a second water outlet channel and a containing cavity used for storing bath foam are arranged in the body. The switching valve assembly can enable the water inlet channel to be selectively communicated with the first water outlet channel and the second water outlet channel, the second water outlet channel comprises a Venturi tube section, the Venturi tube section is provided with a negative pressure channel, the containing cavity is provided with a first through hole and a second through hole, the first through hole is communicated with the negative pressure channel, and the second through hole is communicated with the negative pressure channel. The second through hole is communicated with outside air or the second water outlet channel, so that when the water inlet channel is communicated with the second water outlet channel, liquid in the containing cavity can be sucked into the Venturi tube section through the first through hole under the negative pressure effect to be mixed with water flow and then flow out. According to the foam shower head, bath foam water can be automatically sprayed by switching the water outlet channels, and operation is easy and convenient.

The utility model provides a hot water supply device. The hot water supply device comprises a pipeline connecting assembly which comprises a first pipeline and a second pipeline, one end of the second pipeline is detachably connected with one end of the first pipeline, and the first pipeline comprises a bent conveying path; a venturi tube; and an air valve; wherein the conduit connection assembly is connected between the venturi tube and the air valve, the first conduit is removably connected to the air valve, and the second conduit is removably connected to the venturi tube. The hot water supply device has the advantages of being simple, reliable, easy to implement, convenient to use and the like, and reliable pipeline connection can be rapidly established between the air valve and the Venturi tube.

The utility model provides a detergent box assembly and clothes processing equipment. The detergent box assembly comprises a water inlet valve; a first cavity, a putting pipeline and an air inlet channel are arranged in the box body at intervals, the putting pipeline comprises a Venturi tube, the Venturi tube comprises a liquid inlet, a liquid outlet and a negative pressure port, the liquid inlet is communicated with the water inlet valve and / or the first cavity, the liquid outlet is communicated with the inner cylinder, and the negative pressure port is communicated with the negative pressure port. One end of the air inlet channel communicates with the negative pressure opening, and the other end of the air inlet channel communicates with the side, away from the ground, of the outer cylinder; wherein the first chamber is used for storing a detergent. According to the detergent box assembly, the negative pressure opening of the venturi tube of the putting pipeline communicates with the outer cylinder, the air suction requirement of the negative pressure opening is met, external dust is prevented from entering the negative pressure opening, and the cleanliness of the negative pressure opening is guaranteed.

Provided is a venturi. The venturi includes a housing, a first opening / closing part, a second opening / closing part, and a flow rate adjuster. The flow rate adjuster includes a shaft that is rotatably coupled to the housing and that passes through the air passage in an upward / downward direction that is perpendicular to the reference direction, a cam that is integrally and rotatably coupled to the shaft and that applies or releases an external force to the first opening / closing part and the second opening / closing part, and a blade that is integrally and rotatably coupled to the shaft and provided with a plurality of wings.

The utility model provides a cleaning system and relates to the technical field of waste gas treatment. The gas inlet pipe is communicated with the side part of the venturi pipe, the liquid inlet pipe is communicated with the top of the venturi pipe, the leaching tower is communicated with a pipeline at the bottom of the venturi pipe, a first valve is arranged on the pipeline between the leaching tower and the venturi pipe, and a second valve and a third valve are respectively arranged on the liquid inlet pipe and the gas inlet pipe. The venturi tube is communicated with a circulating cleaning pipeline, and an alkali liquor box, a circulating pump and a filter are arranged on the circulating cleaning pipeline. According to the Venturi tube cleaning device, manual cleaning operation is not needed, and the Venturi tube cleaning efficiency is improved.

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 relates to the technical field of inflating devices, and discloses an inflating device for assembling an air film building, which is characterized in that a centrifugal fan, a venturi tube, a vertical tube and the like are arranged to accelerate the flow velocity of air and introduce other air, and an air inlet of the air film building is hermetically connected with a diffusion section by using devices such as a connecting tube and the like. Then a centrifugal fan and a frequency converter are started, a fan body sucks in external air through an air inlet pipe and blows the external air into an air outlet pipe, the air outlet pipe transmits wind power into a Venturi pipe, then the wind power is compressed through a storage section to enable the wind power to rapidly flow when reaching a throat pipe section, and meanwhile air in a vertical pipe is introduced into the venturi pipe; and the air volume and the air speed blown into the air film building are increased, and the effect of rapidly blowing more air is achieved.

The utility model relates to the technical field of pipeline dehumidification equipment, and discloses an anti-blocking dehumidification device for an air inlet pipe of an ash conveying system, which comprises a venturi pipe, an inclined pipe communicated with the right side of the venturi pipe, a centrifugal cylinder communicated with the right side of the inclined pipe, an exhaust pipe communicated with the right side of the centrifugal cylinder, and a water accumulation cylinder assembled inside the centrifugal cylinder, blades are evenly distributed outside the water accumulating cylinder, a water collecting box is embedded in the front face of the centrifugal cylinder, and the bottom of the centrifugal cylinder is in threaded connection with a collecting disc. According to the anti-blocking dehumidification device for the dust conveying system air inlet pipe, water in air is condensed and formed through cooperation of centrifugal force and low temperature, adheres to the outer portions of blades and then is thrown into a water collecting box and a collecting disc to be collected and treated, and meanwhile a water accumulating barrel, the blades, the water collecting box and the collecting disc are driven through flowing of fluid; meanwhile, compared with a traditional mode that filtering and dehumidification are conducted through a filter element, the overall maintenance frequency of the device is greatly reduced.

The present invention relates to a Venturi separator, characterized in that the Venturi separator comprises a Venturi tube and a liquid-phase collector tube which encloses at least a part of the structure of the Venturi tube, wherein the Venturi tube comprises the following sequentially connected sections: an optional constant-diameter section, a reduced-diameter section, a neck and an expanded-diameter section, and the Venturi separator has a gas-phase inlet, a liquid-phase inlet, a liquid-phase outlet and a gas-phase outlet, wherein an opening is provided on a side wall of the expanded-diameter section of the Venturi tube or at the end of the expanded-diameter section, the opening leading to the liquid-phase collector tube so that a liquid phase can leave the Venturi tube and enter the liquid-phase collector tube under centrifugal force.The present invention also relates to the use of the Venturi separator in chemical processes.

The application discloses a ventilation equipment for a tunnel, which comprises a tunnel fan, a filter pipe detachably arranged at an air inlet of the tunnel fan for filtering small garbage, a venturi tube arranged at an air outlet of the tunnel fan for pressurizing air outlet and air inlet diversion and filtering large garbage, and a collecting box arranged below an air inlet of the filter pipe for collecting the filtered large garbage. In the application, the venturi tube, the filter pipe and the collecting box are arranged skillfully, which can pressurize the air outlet, improve the ventilation efficiency, form the diversion at the air inlet of the filter pipe, press the garbage at the air inlet into the collecting box, avoid the garbage flying randomly and cause the safety hidden danger, and facilitate the subsequent dismounting and replacement of the filter pipe through the pipe clamp. The collecting box is movably embedded in a bottom frame, which is easy to replace and clean the internal garbage.

The application discloses a foreign matter plugging structure for a Venturi tube, which comprises a plugging assembly embedded in the interior of the Venturi tube, wherein the plugging assembly comprises a sealing layer capable of interference fit with the inner wall of the Venturi tube; and a connecting assembly fixedly connected with the plugging assembly, the connecting assembly being capable of fixed fit with the Venturi tube and limiting the relative position of the plugging assembly in the Venturi tube. The plugging assembly and the connecting assembly are used to effectively plug the interior of the Venturi tube and accurately position the plugging area, thereby solving the problems of unreliable sealing and difficult positioning of the conventional temporary shielding mode and having the advantages of simple installation, reliable sealing and strong adaptability.

The utility model provides a spray gun which comprises a handle and a water outlet head which are connected with each other, the handle is provided with a water inlet channel, the water outlet head is provided with a water outlet channel communicated with the water inlet channel, the water inlet channel is provided with a switch valve core used for controlling on-off of water flow, and the spray gun further comprises a bath bottle rotationally connected to the water outlet head. A breathable cover is arranged on the bath bottle, a liquid outlet hole is formed in the end, connected with the water outlet head, of the breathable cover, a liquid inlet channel is formed in the water outlet head, a Venturi pipeline is arranged in the water outlet channel, the Venturi pipeline is provided with a negative pressure channel, the liquid outlet end of the liquid inlet channel is communicated with the negative pressure channel, and after the bath bottle rotates by a preset angle, the negative pressure channel is communicated with the negative pressure channel. And the liquid outlet hole can be communicated with or staggered from the liquid inlet end of the liquid inlet channel. The spray gun is simple in structure, convenient to use and simple and attractive in appearance.

The invention relates to the technical field of photovoltaic installation, and discloses a photovoltaic tracking mechanism of a new energy photovoltaic power system, the photovoltaic tracking mechanism comprises a substrate and a heat dissipation assembly arranged on the substrate, the heat dissipation assembly comprises a ventilation hole formed in the substrate in a penetrating manner, and a venturi tube is movably connected to the interior of the ventilation hole; fan blades are fixedly connected to the inner wall of the Venturi tube in an annular array distribution mode, and first sliding grooves are formed in the two sides of the outer wall of the Venturi tube in an annular array distribution mode; in the process that heat of the storage box is extracted, the interior of the storage box also generates a low-voltage state, at the moment, the top of the storage box is covered with a photovoltaic panel, and the photovoltaic panel is tightly adsorbed to the top of the storage box in the low-voltage state in the storage box, so that the storage box can automatically adjust the adsorption force to the photovoltaic panel according to different wind power, and the storage box is more convenient to use. Therefore, when the wind power is small, the photovoltaic panel can be tightened loosely, and the problem of deformation caused by long-time tight contraction of the photovoltaic panel is avoided.

The invention relates to a soft package chair inner container filling device and a method thereof.The soft package chair inner container filling device comprises a supporting frame and a venturi tube erected on the supporting frame, a rotary drum is rotationally arranged on the outer side of the venturi tube, an adsorption opening is formed in a throat pipe of the venturi tube and communicates with the rotary drum, and a material conveying assembly is arranged on one side of the rotary drum; a feeding assembly is arranged at one end of the rotary drum and connected with the conveying assembly, a blocking assembly is arranged in the middle of the rotary drum, a stirring assembly is arranged at the other end of the rotary drum, a guide rail is arranged at the end of the stirring assembly, and an anti-winding assembly is arranged on the stirring assembly. The stirring assembly is used for dispersing large materials and adsorbing the dispersed materials in the rotary drum into the Venturi tube through the adsorption effect of the Venturi tube, and then the liner is filled with the materials; the problem that the thickness of the inner container is inconsistent due to non-uniform filling materials is avoided, and meanwhile, the situation that the working efficiency of the device is affected due to the fact that the materials are wound on the stirring roller is avoided.

The utility model relates to the technical field of electromagnetic water meters, and discloses an electromagnetic water meter diversion pipe section and an electromagnetic water meter, the electromagnetic water meter diversion pipe section comprises a pipe section, a first flange, a second flange and an inner side plate, a water inlet of the first flange is communicated with a first end of the pipe section, a water outlet of the second flange is communicated with a second end of the pipe section, and the inner side plate is arranged along the flowing direction of water in the pipe section. The area of the cross section of the water inlet is gradually reduced, the area of the cross section of the water outlet is gradually increased, and the structure of the pipeline is a pipeline design which firstly shrinks and then gradually expands and is similar to a Venturi tube; wear-resistant rings are arranged at the joints of the water inlet and the pipe section and the joints of the water outlet and the pipe section respectively; the anti-abrasion ring comprises a clamping groove end arranged at the first end in a sleeving mode and an inclined supporting end extending to the inner side of the water inlet, loss of fluid to the pipeline is reduced, the flow speed of fluid media with the low flow speed is remarkably increased, pressure loss is reduced, and therefore the flow guiding performance of the fluid media is improved.

The utility model relates to fire fighting equipment technical field, more particularly to a kind of venturi with non-return function and fire fighting equipment.Venturi with non-return function includes diffuser pipe, liquid suction pipe, non-return seat, non-return ball and nozzle;Along the height direction of diffuser pipe, diffuser pipe is provided with import end, export end, liquid suction end;Nozzle is detachably set in export end;Liquid suction pipe includes main body and connecting portion connected in sequence, connecting portion has connecting channel, and main body has inner cavity;Non-return ball is set in inner cavity;Connecting portion is detachably connected with liquid suction end, so that connecting channel can be communicated with diffuser pipe;Non-return seat is detachably set in open mouth;The inner diameter of connecting channel and cooperation channel is less than the outer diameter of non-return ball;And non-return ball can resist in inclined surface, to close cooperation channel.Such can improve the condition of fluid backflow in liquid suction pipe.

This utility model relates to the field of dust collector technology, and in particular to a water curtain dust collector, comprising a tower body, a Venturi tube connected to the lower side wall of the tower body, a screen installed on the inner side of the lower part of the tower body, several baffles installed below the screen, and a water collection tank connected to the lower end of the tower body. Both the screen and the baffles are hollow. A sedimentation tank is connected to the water collection tank. The upper outer wall of the sedimentation tank is connected to the screen and baffles via a water supply and heating pipeline. The outlets of the screen and baffles are connected to the water collection tank via a return water pipeline. This water curtain dust collector, by using a hollow screen and baffles and constructing a water circulation heating system using a water collection tank, sedimentation tank, water supply and heating pipeline, and return water pipeline, achieves several advantages. Firstly, the heated circulating water flows within the screen and baffles, increasing their surface temperature and effectively preventing the solidification and accumulation of sticky particles due to temperature reduction, thus solving the problem of flow channel blockage and extending the equipment maintenance cycle.

The utility model provides an emergency repair disinfestation device for a hydrogen sulfide synthesis system, which comprises a base, an alkali liquor storage tank, a first venturi tube, a second venturi tube and a circulating pump, the alkali liquor storage tank and the circulating pump are arranged on the base, the alkali liquor storage tank is divided into a first chamber and a second chamber through a partition plate, and the first chamber and the second chamber are arranged in the first venturi tube and the second venturi tube respectively. Two extension pipes are arranged at the upper part of the alkali liquor storage tank, the upper parts of the extension pipes are fixed at the upper part of the alkali liquor storage tank, and the lower parts of the extension pipes downwards extend to the lower parts of the first chamber and the second chamber respectively; and the lower part of the first Venturi tube is connected with the first chamber through an extension tube. After alkali liquor is fed into the first venturi tube and the second venturi tube through the circulating pump, a negative pressure area is generated in the venturi tubes, and after the negative pressure area is connected with a first-aid repair position, residual hydrogen sulfide at the first-aid repair position can be pumped out and neutralized through the alkali liquor, so that the effects of absorbing and removing harm are achieved, a large amount of time is not required to be consumed for purging and replacing, and the cost is reduced. The efficiency of maintenance operation is optimized, and the operation efficiency of the system is improved.