309 results about "Diffusion tube" patented technology

The invention relates to the technical field of liquid cooling, and discloses a flexible liquid cooling structure and a server, the flexible liquid cooling structure comprises a plurality of flexible substrates, a flexible connecting band is fixedly connected between two adjacent flexible substrates, the upper end surface of each flexible substrate is provided with a cooling groove, and the upper end surface of each flexible substrate is fixedly provided with a cover plate; the cooling groove and the cover plate form a cooling cavity; the jet flow assembly is arranged at the liquid inlet hole of the flexible liquid cooling structure, the flow speed of cooling liquid is effectively increased by utilizing the gradual shrinkage structures of the liquid inlet pipe part, the shrinkage pipe part and the diffusion pipe part of the jet flow assembly, when the cooling liquid passes through the shrinkage pipe part, the flow speed is obviously increased under the effect that the cross section of a channel is gradually reduced, and meanwhile, the cooling efficiency is improved. The air suction holes further guide air to be mixed into the cooling liquid through the negative pressure effect, a stronger jet flow effect is formed, the cooling liquid can rapidly flow through the whole cooling cavity, the problem of liquid retention caused by insufficient flow speed is effectively solved, and therefore uniform distribution of the cooling liquid is achieved.

The invention relates to the technical field of optical detection, in particular to an automatic scanning device for appearance defects of a quartz diffusion tube. The film type light reflecting device comprises a film covering mechanism, a guide mechanism and a film pasting mechanism which are sequentially arranged in the advancing direction of the moving shaft, the film covering mechanism comprises a plurality of winding rollers and a guide roller set which are fixed to the circumferential side of the moving shaft and distributed at equal intervals, a light reflecting film is wound around the winding rollers, and one end of the light reflecting film penetrates through the guide roller set and is fixedly provided with an arc-shaped clamping head. The quartz diffusion tube solves the problems that when an existing quartz diffusion tube is subjected to laser scanning, reflective powder coated on the quartz diffusion tube is difficult to remove, and the tube body is polluted and damaged.

The invention discloses a passivation method of a boron and phosphorus doped Poly layer, a passivation contact structure of the boron and phosphorus doped Poly layer and a battery. The passivation method comprises the following steps: firstly, growing a tunneling oxide layer with two thin and compact sides and a thick and loose middle on the surface of a silicon wafer by adopting a mode of combining low-temperature low-pressure oxidation, high-temperature normal-pressure oxidation and low-temperature normal-pressure oxidation, and then carrying out deposition and oxidation propulsion of boron atoms and / or phosphorus atoms by adopting a high-temperature diffusion tube, so that boron and phosphorus with a certain concentration are doped in a Poly silicon layer. According to the invention, through superposition of the oxide layers with different compactness, the overall thickness of the tunneling oxide layer is improved, so that the structure of the tunneling oxide layer is not obviously damaged in the subsequent boron and phosphorus diffusion process, and the passivation effect of the boron and phosphorus doped Poly layer is obviously improved. According to the passivation method disclosed by the invention, Poly silicon layers and doped polycrystalline silicon layers with different thicknesses can be obtained, and the passivation method can be applied to all batteries needing to use boron Poly and phosphorus Poly.

The invention discloses a circulating water jacket cooled venturi jet graphite quench cooler, and particularly relates to the technical field of venturi jet graphite quench coolers, the circulating water jacket cooled venturi jet graphite quench cooler comprises a compression inlet pipe, a throat pipe and a diffusion pipe, the throat pipe is fixed at the bottom end of the compression inlet pipe, the diffusion pipe is fixed at the bottom end of the throat pipe, and the diffusion pipe is fixed at the bottom end of the throat pipe. Cooling assemblies are arranged on the outer sides of the compression inlet pipe, the throat pipe and the diffusion pipe. The circulating pipeline is arranged, located on the inner side of the jacket body and spirally welded to the outer side walls of the compression inlet pipe, the throat pipe and the diffusion pipe for use, and during use, a low-temperature medium is introduced through the circulating inlet pipe at the bottom end of the right side and discharged through the circulating outlet pipe at the top of the right side, so that circulation is conducted; and the circulating low-temperature medium can assist in driving heat transferred to the outer side from the compression inlet pipe, the throat pipe and the diffusion pipe, cooling treatment is assisted, and the auxiliary cooling function of the Venturi jet graphite quench cooler in use is enhanced.

The utility model relates to the technical field of refrigeration machinery, in particular to an efficient oil separator with a built-in cooling device. Comprising a cylinder body, an upper sealing plate, a lower sealing plate and an oil storage pipe which form a shell, as well as a layered rotational flow assembly, a baffle plate, a primary filter screen, a middle through pipe, a diffusion pipe, a filter screen fixing plate and a secondary filter screen which form an oil filtering system, and an oil cooling spiral coil pipe of an oil cooling device, a refrigerant inlet pipe, a refrigerant outlet pipe, a lubricating oil outlet, a cooling medium inlet and a cooling medium outlet; the upper sealing plate and the lower sealing plate are fixed to the upper end and the lower end of the barrel respectively. An oil separation system and an oil cooling device can be integrated, and high-temperature lubricating oil can be fully cooled while the efficient oil separation effect is guaranteed.

The invention discloses a pneumatic transmission type gas and dust joint removal device, and belongs to the technical field of mine underground safety equipment, the pneumatic transmission type gas and dust joint removal device comprises a shell, a gas and dust collection assembly, a gas decomposition assembly and a foam spraying assembly are arranged in the shell, and the gas and dust collection assembly comprises a first-stage throat pipe; the lower portion of the first-stage throat pipe is communicated with a first pressure ventilation pipe quick connector penetrating through the stainless steel shell, one side of the first-stage throat pipe is connected with a first-stage diffusion pipe, the upper portion of the first-stage diffusion pipe is communicated with a telescopic air suction arm, and the tail end of the telescopic air suction arm is communicated with a flexible rotating cover opening. According to the pneumatic transmission type gas and dust joint removal device, the telescopic air suction arm, the flexible rotary cover opening and the gas decomposition assembly are arranged, a dust source can be covered in all directions, gas and dust can be efficiently removed to prevent explosion, compressed air is adopted as a power source, spark generation can be avoided, and the device is convenient to use. The safety, reliability and applicability of underground use are improved, residues and waste liquid can be collected, and pollution to the working environment is avoided.

The invention discloses a water pump open-type impeller capable of inhibiting clearance cavitation and an open-type impeller pump, relates to the technical field of clearance cavitation inhibition of water pump impellers, and aims to solve the problem that a pump body vibrates due to the fact that blackspots and cracks appear on the surface of an existing water pump open-type impeller due to clearance cavitation, even the water pump open-type impeller falls off step by step in a spongy shape and generates noise. Comprising an impeller hub and blades, and the multiple blades are evenly arranged on the impeller hub in the circumferential direction. The side, directly facing the incoming flow of the water diversion pipe, of each blade is a water inlet edge, the side, corresponding to the downstream diffusion pipe, of each blade is a water outlet edge, the intersection point of each water inlet edge and the rim face is A, the intersection point of each water inlet edge and the hub face is B, and the impeller rim side wrap angle formed by the intersection point A and the vertical line and the longitudinal plane of the impeller hub axis is phi A, the impeller hub side wrap angle formed by the intersection point B and the vertical line and the longitudinal plane of the axis of the impeller hub is phi B, phi A is larger than phi B, and the difference value of phi A and phi B is 10-30 degrees.

The utility model discloses a dry desulfurization reactor of a circulating fluidized bed, which comprises an absorption tower and a Venturi tube, the spraying system comprises a cooling recovery chamber wrapping the outer side of the feeding end of the Venturi tube, a water pipe communicated with the interior of the absorption tower, a spraying pipe communicated with the water pipe, a nozzle arranged on the spraying pipe and a cooling pipe communicated with the water pipe; the flow guide rotating mechanism comprises a flow guide plate, blades positioned on the flow guide plate, a convex block arranged on the flow guide plate, a through hole formed in the convex block, and a rotating rod which penetrates through the through hole and is fixed with the side wall of the absorption tower. The spray system arranged in the dry desulfurization reactor of the circulating fluidized bed can pre-cool the flue gas in the diffusion pipe and cool the flue gas in the absorption tower, so that the flue gas cooling effect in the whole desulfurization process is ensured; the flow guide rotating mechanism can continuously enhance friction and collision force between flue gas and particles by means of water flow impulsive force.

The utility model discloses a venturi mixer which comprises a main body, a contraction cavity, a throat pipe and a diffusion pipe, the contraction cavity is arranged in the left end of the main body and forms a gas inlet cavity with the main body, the contraction cavity is a hollow cone, an air inlet is formed in the middle of the contraction cavity, and a plurality of small holes are uniformly distributed in the surface of the contraction cavity; the throat pipe is arranged in the middle of the main body, the throat pipe is connected with the right end of the shrinkage cavity, and a waste gas cavity is formed between the throat pipe and the main body; the diffusion pipe is arranged in the right end of the main body, an extension pipe expanding outwards is arranged at the left end of the diffusion pipe, and the extension pipe extends out of the right portion of the throat pipe to form an air channel with the throat pipe. The blade type mixer solves the problems that an existing blade type mixer has a mixing efficiency bottleneck, and when the existing blade type mixer is applied to a large-displacement engine, the mixing efficiency is low, the air inflow is insufficient, and the optimal value required by the engine cannot be achieved.

The invention relates to the technical field of lithium battery recovery, and discloses an explosion-proof crushing device for lithium battery recovery based on gas circulation, the explosion-proof crushing device comprises a crushing main body, a crushing device and an inert gas circulation conveying system, the crushing main body is provided with a feeding mechanism and a discharging mechanism, and the crushing device divides the crushing main body into two parts; the gas inlet end of the inert gas circulating conveying system communicates with the crushing body through a plurality of branch pipes, the gas outlet end of the inert gas circulating conveying system communicates with the recycling part of the crushing body through a pipeline, the branch pipes extending into the dissipation part are connected with diffusion pipes fixed to an inner cavity of the crushing body, and a gas outlet channel is formed in the top of the crushing body. According to the device, stability of the concentration in inert gas circulation is achieved through the inert gas circulation system and the gas outlet channel capable of automatically exhausting gas, and meanwhile, the inert gas circulation system can also be matched with the diffusion pipe to gather waste gas at a source at the gas outlet channel; and the exhaust gas discharging speed is increased.

An aeration system for a wastewater treatment tank, comprising a driving mechanism (1), which drives a downwardly-extending main shaft (2), wherein the main shaft (2) is divided into an upper section and a lower section, the upper section and the lower section respectively being provided with an upper spiral blade (31) and a lower spiral blade (32) which rotate in opposite clockwise directions; the outside of the main shaft (2) is further surrounded by a sleeve (4) coaxial with the main shaft (2), an upper spiral channel and a lower spiral channel respectively being formed between the inner wall of the sleeve (4) and the upper and lower spiral blades (31, 32); the sleeve (4) is fixed relative to a housing of the driving mechanism (1), and the upper end of the sleeve (4) is provided with an air inlet (40); the inside of the sleeve (4) is provided with a sealing plate (5) located between the upper and lower spiral blades (31, 32), the sealing plate (5) being provided with jet holes (50) in the axial direction of the main shaft (2); and below the sealing plate (5), the sleeve (4) is in lateral communication with two or more diffusion tubes (6), said diffusion tubes (6) being circumferentially uniformly distributed around the main shaft (2). The system can force air and wastewater to mix, and thus has a higher oxygen dissolution efficiency.

The embodiment of the invention provides a multifunctional wet-type dust removal device, and relates to the technical field of dust removal, the multifunctional wet-type dust removal device comprises a separator and a Venturi tube connected to a feed port of the separator, the Venturi tube sequentially comprises a shrinkage tube, a throat tube and a diffusion tube, the shrinkage tube is connected with a water inlet tube, the throat tube comprises an inner tube and connecting discs connected to the two ends of the inner tube, and the diffusion tube is connected with the inner tube. The connecting disc is detachably connected with the shrinkage pipe and the diffusion pipe, the inner pipe is made of elastic materials, a plurality of strip-shaped through holes are formed in the inner pipe, the throat pipe further comprises adjusting sliding blocks arranged at the positions of the strip-shaped through holes, the inner pipe is fixedly connected to the adjusting sliding blocks in a sealed mode, and the adjusting sliding blocks are connected with the connecting disc. The connecting disc is provided with a control mechanism which controls the adjusting sliding block to move in the radial direction of the inner pipe so as to control the inner diameter of the inner pipe. The Venturi tube has the effect that the size of the throat tube of the Venturi tube can be conveniently adjusted.

The utility model discloses a vulcanizing tank with uniform temperature rise, which comprises a tank body and a heat supply system, at least four steam diffusion pipes are distributed in the tank body, the steam diffusion pipes are uniformly distributed on the inner wall of the tank body, a plurality of steam outlet holes are distributed on the steam diffusion pipes, and the steam outlet holes are arranged on the same cross section. Steam of each steam outlet hole is jetted into the tank body to form a steam rotating ring; and the heat supply system is connected with the steam diffusion pipe. According to the vulcanizing tank, through cooperation of the tank body and the heat supply system and the action of the steam diffusion pipe of the tank body, steam forms a steam rotating ring in the tank body, all parts of the tank body can be evenly heated, it is guaranteed that the surface temperature of a rubber product can be evenly increased, the temperature difference fluctuation of all the parts is small, and stability is high; therefore, the qualified rate of products can be improved.

The invention belongs to the technical field of jet pumps, and discloses an anti-backflow high-efficiency jet pump which comprises a liquid inlet pipe, a suction chamber, a nozzle, a throat pipe, a diffusion pipe, an overflow pipe and a valve. The inner wall of the throat pipe is provided with a fracture in the middle of the fluid channel, the outer wall of the throat pipe is provided with an overflow port close to one end of the diffusion pipe, and one end of the overflow pipe is communicated with the overflow port. According to the jet pump, backflow of the jet pump is prevented through the fracture and the overflow pipe, when the back pressure of an outlet of the jet pump is large, mixed fluid in the centrifugal pump can flow out of the jet pump through the fracture and the overflow pipe, and therefore the situation that the jet pump flows back and flows out of the sucked opening is prevented; when the centrifugal pump stops working, residual liquid in the jet pump is discharged through the fracture and the overflow pipe, the centrifugal pump does not need to be started and stopped frequently, and the service life of the centrifugal pump is prolonged.

The invention discloses a continuous powder material spraying range-extending superfine grinding system, and belongs to the technical field of micro-nano-scale powder material grinding preparation. The powder material storage bin is connected with an outlet of the vacuum feeding machine; an outlet of the material storage bin is fixedly connected with a feeding rotary valve, a two-way micro-powder crusher and a double-helix feeding machine through flanges in sequence; the bidirectional micro powder crusher comprises a sleeve, an inner-layer crushing cylinder and an outer-layer crushing cylinder, wherein the inner-layer crushing cylinder and the outer-layer crushing cylinder are rotatably arranged in the sleeve; the high-speed airflow jet crusher comprises an incidence pipe, a jet nozzle, a mixing pipe, a throat pipe and a diffusion pipe which are sequentially connected, a mixing cavity is formed in the mixing pipe, an injection pipe is arranged on the mixing pipe, the diffusion pipe is provided with a diffusion cavity which is in a gradually-expanding shape, a pressurization connector is arranged on the diffusion pipe, and the diffusion pipe is a discharging port. And an injection port of the injection pipe is flexibly connected with an outlet of the double-helix feeding machine. According to the invention, millimeter-scale particle powder materials can be crushed to micro-nano scale in a bidirectional micro-powder crushing and high-speed airflow jet crushing manner.

A measurement device for a volute casing assembly is provided that takes into account the effects of circumferential asymmetry. [Solution] The system comprises a spiral passage (1), a diffuser pipe (2), an outlet extension (3) and a tongue (4) which are connected in series, and flow field measurement points (100, 200, 300) are spaced apart along the fluid flow direction within the spiral passage, the diffuser pipe and the outlet extension, and the diffuser pipe is connected to both the tongue and the outlet of the spiral passage, and the spacing between adjacent flow field measurement points in the region close to the tongue is smaller than the spacing between adjacent flow field measurement points in the region far from the tongue.

The invention relates to the technical field of gas-solid ejectors, in particular to an external through-flow gas-solid ejector which comprises a gas nozzle. The device further comprises a mixing chamber, a feeding channel, a throat pipe and a diffusion pipe. An inner cavity of the mixing chamber is designed to be of a diffusion-horizontal-convergence structure, materials can be conveyed out of the gas-solid ejector in time, a traditional nozzle built-in mode is improved, the gas nozzle and the mixing chamber are communicated to form an integral structure, and a sealing assembly is arranged on a flange plate, so that the mixing effect is improved. The contraction sealing piece can be rapidly expanded and contracted through adjustment of the control rod, the sealing performance is guaranteed, meanwhile, the problem that a conventional gasket is prone to being lost is effectively solved, a gas-solid injection and communication integrated structure is adopted in the device, ineffective space and a material retention area commonly existing in a traditional gas-solid injector are eliminated, and the service life of the gas-solid injector is prolonged. Not only is the performance of the gas-solid ejector optimized, but also the manufacturing cost and the use cost are remarkably reduced, and the reliability and the durability of equipment are improved.

The utility model belongs to the technical field of wallboard processing equipment, and particularly relates to a soot blower for a wallboard perforating machine, which comprises a workbench, a processing frame and a placing station for placing a wallboard are arranged on the top surface of the workbench, the wallboard is placed on the placing station, a second air cylinder drives a drilling cutter to perforate the wallboard, a first air cylinder pushes the second air cylinder, and the first air cylinder drives the second air cylinder to perforate the wallboard. A drilling cutter can drill a plurality of holes in a wallboard on the same straight line, after drilling is completed, a draught fan is driven, airflow generated by the draught fan sequentially passes through an air inlet pipe, a shrinkage pipe and a conveying pipe and is finally diffused through a diffusion pipe, dust on the wallboard is blown away by the airflow and blown into a material collecting box, and a fourth air cylinder can push a frame plate to drive a material blowing piece to move. A fourth air cylinder pushes a frame plate to do reciprocating motion once on a material cleaning frame, so that dust on the surface of the wallboard is better cleaned; compared with the prior art, the surface of a punched plate can be cleaned, and the punching quality can be improved.

The invention belongs to the technical field of wet dust removal devices, and particularly relates to a turbulence-enhanced efficient energy-saving wet dust removal device, and a Venturi condensation unit comprises a shrinkage pipe, an adjustable throat pipe and a diffusion pipe which are connected in sequence; the turbulent flow mixing and strengthening unit is connected between an outlet of the diffusion pipe and an inlet of the fiber grid condensation and filtration unit, and a static turbulent flow generator is arranged in the turbulent flow mixing and strengthening unit and used for enabling gas-liquid-solid multiphase flow from the Venturi condensation unit to generate rotation and turbulent flow; the fiber grid coagulation filtering unit comprises a shell and at least one layer of fiber grid plate arranged in the shell; the washing liquid circulation assembly comprises a liquid storage tank, a water pump and a first connecting pipeline and is used for conveying washing liquid in the liquid storage tank to the atomizing nozzles and the liquid distribution device. The system has the advantages of low-resistance operation, self-cleaning capability, intelligent adjustment and high system integration degree.

The invention discloses an adjustable lossless annular jet flow fish suction pump, which belongs to the technical field of fish suction equipment, and comprises a working water straight pipe, the outer wall of the working water straight pipe is communicated and connected with a working water inlet pipe, and one end of the working water straight pipe is connected with a conveying mechanism. The other end of the working water straight pipe is sequentially connected with a reducing pipe, a buffering assembly, a throat pipe and a diffusion pipe in a penetrating mode. The diameter of the end, close to the working water straight pipe, of the reducing pipe is larger than that of the other end. The size of the annular nozzle can be adjusted through the flow channel structure of the working water straight pipe, the reducing pipe, the buffer assembly, the throat pipe and the diffusion pipe in cooperation with the telescopic guide assembly. The guide assembly stretches and retracts inside to change the distance between the guide assembly and the inner wall of the reducing pipe, adjustment operation is easy and convenient, and then the width of the annular nozzle is adjusted; the nozzle is narrowed to increase the negative pressure and the conveying speed, and the efficient conveying requirement is met; and the nozzle is widened, so that the negative pressure is reduced to adapt to low-speed conveying of fragile live fish.

The invention provides a nuclear power plant gas sampling device, and relates to the technical field of nuclear power plant nuclear sampling systems.The sampling device comprises a diffusion pipeline, the input end of the diffusion pipeline is connected to a gas collecting pipeline of a nuclear power plant, the diffusion pipeline is provided with a sampling gas pump, and the sampling gas pump is used for obtaining sample gas from the gas collecting pipeline; the input end of the sampler is detachably connected to the first output end of the diffusion pipeline, and the sampler is used for acquiring part of sample gas from the diffusion pipeline; the input end of the post-treatment pipeline is detachably connected to the second output end of the diffusion pipeline or the output end of the sampler, the post-treatment pipeline is provided with a treatment pump, and the treatment pump is used for enabling the sampler to form a negative pressure state and performing post-treatment on gas in the diffusion pipeline. Power is provided for a gas sample, so that the problem of insufficient pressure difference of an REN pipeline is solved, and gas can effectively enter a sampling device.

The application belongs to the technical field of jet pump equipment, and discloses a double-nozzle jet pump capable of improving pumping efficiency. The jet pump comprises a pump body, a sleeve pipe and a pump core. The pump body is provided with a working fluid channel, a transported fluid channel and the pump core. The sleeve pipe is sleeved on the pump body and forms a mixed fluid discharge channel with the sleeve pipe. The pump core comprises an inlet inner cavity connected with the working fluid channel, two nozzles symmetrically connected with the inlet inner cavity along the axial direction, a throat pipe arranged at intervals with the outlet of the nozzle, and a diffusion pipe connected with the outlet of the throat pipe. The diffusion pipe is connected with the mixed fluid discharge channel, and the transported fluid channel is connected with the nozzle. The working fluid enters the inlet inner cavity through the working fluid channel and enters the two nozzles at the same time. A low-pressure area is formed at the outlet of the nozzle, so that the transported fluid is sucked into the nozzle through the transported fluid channel, and then the working fluid and the transported fluid are mixed to form high-speed mixed fluid in the throat pipe. The high-speed mixed fluid is pressurized through the diffusion pipe and discharged through the mixed fluid discharge channel.

The utility model discloses a guideboard support and relates to the technical field of guideboards. The device comprises a base, a first square tube and a second square tube, the first square tube is detachably installed on the base, and the second square tube is arranged on the inner wall of the first square tube in a sliding mode. According to the utility model, the light-emitting components are arranged in the first square tube and the second square tube and are matched with the first square tube and the second square tube which are made of PC light diffusion tubes, so that the guideboard bracket is bright, colorful and dazzling in light, the display effect at night is improved, meanwhile, a charge pal or a mobile power supply can be directly used, and convenience is brought to outdoors, shopping malls and places without electricity; both can be used; by arranging the dismounting assembly, the first square tube can be conveniently fixed to the base or dismounted from the base, so that carrying is convenient, by arranging the adjusting assembly, the height of the second square tube can be freely adjusted, overall height adjustment of the guideboard support is achieved, and the flexibility of the guideboard support is improved.

The utility model provides a multi-nozzle ejector, which belongs to the technical field of ejectors and comprises an ejector main body, a low-pressure fluid pipeline is embedded into the side wall of the ejector main body, a high-pressure fluid pipeline is embedded into an inlet of the ejector main body, a nozzle is arranged at the outlet end of the high-pressure fluid pipeline, and a nozzle is arranged at the outlet end of the nozzle. A nozzle assembly used for adjusting fluid pressure is arranged at a nozzle opening of the spray head, a nozzle opening of the nozzle assembly faces the mixing chamber of the ejector body, and finally mixed fluid with the pressure higher than that of the low-pressure suction fluid but lower than that of the high-pressure movement fluid is discharged through the spray head, so that the mixed fluid enters the mixing pipe through the mixing chamber. The fluid is injected from the mixing pipe to the outside through the diffusion pipe, in the process of injecting the mixed fluid, the size of the injected fluid is adjusted through the nozzles of different specifications located on the spray head, adjustment is conducted according to the application environment, and therefore the fluid injection device can be suitable for fluid injection under different conditions, and the situation that the fluid is too large or too small, and the application process is affected is avoided.

The utility model relates to the field of sludge treatment equipment, in particular to a sludge spraying device. The sludge spraying device comprises a mounting cylinder; the diffusion pipe is connected with a pushing air cylinder; a sealing soft cover is arranged at the joint of the mixing pipe and the sludge injection pipe; the angle adjusting structure comprises a mounting frame mounted on the mixing pipe, a guide seat mounted on the sludge injection pipe, an adjusting seat in sliding connection with the guide seat, and a screw rod for driving the adjusting seat to move; the mounting frame and the sludge injection pipe are in hinged matched connection, and the adjusting seat is configured to slide in the direction of the lead screw and lift or pull down the sludge injection pipe. According to the sludge jet device, the length of the diffusion pipe extending into the mixing pipe is adjusted by the pushing cylinder, and the inclination angle of the sludge jet pipe is adjusted by the angle adjusting structure, so that a better mixing effect of compressed air and sludge is achieved under different working conditions.

The application discloses a concentration monitoring device for an aerosol deposition process, and relates to the technical field of aerosol detection.The concentration monitoring device comprises a casing and a speed regulation mechanism, the speed regulation mechanism comprises an aerosol inlet pipe and an aerosol outlet pipe, the aerosol outlet pipe is arranged above the aerosol inlet pipe, the axis of the aerosol inlet pipe and the aerosol outlet pipe are collinear, the cross-sectional radius of the inlet end of the aerosol outlet pipe is larger than the cross-sectional radius of the outlet end of the aerosol inlet pipe, a test area is arranged between the aerosol inlet pipe and the aerosol outlet pipe, the aerosol inlet pipe comprises a first diffusion pipe, the cross-sectional radius of the first diffusion pipe increases from bottom to top, the aerosol outlet pipe comprises a second contraction pipe, the cross-sectional radius of the second contraction pipe decreases from bottom to top, the inlet end of the aerosol inlet pipe penetrates through the bottom of the casing, and the outlet end of the aerosol outlet pipe penetrates through the upper end of the casing.The special structural design of the aerosol inlet pipe and the aerosol outlet pipe is used to realize accurate regulation of the flow speed of aerosol by arranging the speed regulation mechanism.

The invention discloses a production process of an ultra-large silicon carbide thin-wall diffusion tube, which belongs to the technical field of silicon carbide, and comprises the following steps: raw material mixing, granulation, volatile matter detection, die filling, segmented isostatic pressing forming, demolding, drying and shaping, sintering, bonding forming and the like. The ultra-long diffusion pipe can be machined in the mode of split machining in the die filling process and bonding after sintering, the thin-walled pipe can be machined through the isostatic pressing forming technology, the rubber cylinder is adopted for assisting the steel inner die to be separated in the die releasing process, the rubber cylinder tightly wraps the green body branch pipe body, all the positions of the green body branch pipe body are stressed in a balanced mode, and the service life of the green body branch pipe body is prolonged. The strength of the green body branch pipe body can be enhanced, the green body branch pipe body is prevented from being damaged in the separation process of the steel inner mold, the green body branch pipe body is prevented from being damaged in the carrying process, large-diameter diffusion pipes can be machined, and the machining efficiency of large-diameter, ultra-long and thin-wall pipe bodies is effectively improved.

The utility model relates to a negative pressure mud discharge device, including a main drainage-aiding liquid pipeline and a plurality of mud discharge components, wherein the plurality of mud discharge components are connected to the main drainage-aiding liquid pipeline; the mud discharge components include a branch drainage-aiding liquid pipeline, a nozzle, a mixing tube, a diffusion tube, a mud guide pipe and a mud suction plate; the nozzle diameter is smaller than the branch drainage-aiding liquid pipeline diameter; the mud guide pipe includes a first tube body and a second tube body, one end of the first tube body is connected to the nozzle, one end of the second tube body is connected to the mud suction plate, and the other end of the first tube body and the other end of the second tube body are connected by a flange. The mud guide pipe includes a first tube body and a second tube body connected by a flange, which is convenient for connection and disassembly between the first tube body and the second tube body, is conducive to cleaning and replacement of the mud guide pipe, reduces the retention of sludge in the mud guide pipe, ensures the mud guide efficiency of the mud guide pipe, and is also convenient for selecting second tube bodies of different lengths according to actual needs to adapt to the mud discharge of sludge at different positions and improve the sludge discharge efficiency.

The utility model discloses an adjustable microorganism diffusion pretreatment device which comprises a box body, one side of the box body is inserted with a connecting pipe, the other end of the connecting pipe is sleeved with a fixed pipe, the top end of the fixed pipe is fixedly connected with a connecting plate, the top of the connecting plate is rotatably inserted with a threaded rod, and the outer wall of the threaded rod is in threaded connection with a sliding block. The bottom end of the sliding block is fixedly connected with two sliding rods, the bottom ends of the two sliding rods are provided with a composite pipe assembly, the composite pipe assembly slides in the fixed pipe, and the composite pipe assembly comprises a plurality of diffusion pipes. The threaded rod is screwed to enable the sliding block to move, so that the sliding rod and the diffusion pipe are driven to move, the area, exposed out of the fixed pipe, of the diffusion hole of the diffusion pipe is adjusted, meanwhile, the position of the sealing piston in the diffusion pipe is adjusted, and therefore the flowing-out speed of microbial strains is adjusted; therefore, the diffusion density can be adjusted according to different types of microbial strains, and the diffusion effect of microorganisms is improved.

The invention relates to a humidity control method and a fresh air conditioning system, and belongs to the technical field of air conditioning, the fresh air conditioning system comprises a shell, a multi-stage drying decompression device and a steam diffusion pipe, and the left end and the right end of the shell are provided with a steam inlet and a steam outlet respectively; the multi-stage drying and pressure reducing device is detachably arranged in the shell and used for receiving wet steam at the steam inlet, the multi-stage drying and pressure reducing device converts the wet steam into dry steam through the multi-stage throttling expansion effect of the multi-stage drying and pressure reducing device, and the dry steam is discharged through the steam outlet; the steam diffusion pipe is connected to a steam outlet of the shell and is used for diffusing the dry steam; the multi-stage drying and pressure reducing device has the beneficial effects that multi-stage pressure reducing and drying are carried out through the multi-stage drying and pressure reducing device, atmospheric pressure and dried steam are discharged from the steam outlet, and the air humidity in the environment can be well maintained.