38results about How to "Small head loss" patented technology

The invention relates to a device for producing soft carbon black. A necking section of a reaction furnace is designed into an arc smooth curve structure and is tangent with a reaction section. Raw material oil ejected from a raw material oil spray gun nozzle meets rotary high-temperature burning residual gas entering the reaction furnace from upper and lower tangent combustion chambers on two sides of the reaction furnace, a small part of the raw material oil is burnt to provide enough heat, and most of the raw material oil is cracked to generate the carbon black. The necking section adopts the smooth arc curve structure, and the reaction airflow can stably pass through the necking section in a rotary plug flow form by controlling air quantities of inlets of the two combustion chambers, so the 'back mixing' phenomenon is reduced, the frequent coking phenomenon of the soft carbon black due to large treatment quantity and low reaction temperature is avoided, the quality of the carbon black is improved, and the yield of the carbon black is improved.

The invention discloses a reel sprinkling irrigation machine and belongs to the technical field of agricultural irrigation machinery. The sprinkling irrigation machine disclosed by the invention is mainly composed of a reel, a water pipe, a rack, a biased spraying vehicle and a water flow control system, wherein the water flow control system comprises a pipeline, a water turbine, a speed changing box and a water flow adjusting valve. The water turbine and the speed changing box adopt a coaxial design. A power shaft of the water turbine is a power input shaft of the speed changing box. Meanwhile, the water flow adjusting valve capable of distributing flow is further arranged at the front end of the water turbine. According to the sprinkling irrigation machine disclosed by the invention, machine-entering pressure requirements on irrigation water are reduced; meanwhile, a spraying distance is provided, the spraying area is enlarged and the energy conversion efficiency is improved.

An aerosol tip mechanism for an aerosol-type dispenser for dispensing liquid content has a flexible outer shell, a rigid cap portion composed of lower and upper portions, and a rigid nozzle portion having a rigid shaft received within the outlet portion of the flexible outer shell. The rigid shaft interfaces the outlet portion of the outer shell, forming a first normally-closed one-way valve. The lower and upper portions of the rigid cap portion form boots adapted to receive an outlet portion of the flexible outer shell, the boots thereby constraining a lateral motion of the outlet portion of the outer shell, and symmetrically centering the outlet portion around the rigid shaft of the nozzle. The rigid nozzle portion includes a plurality of liquid channels for delivering liquid from a reservoir to a swirling chamber defined within the rigid cap portion, which liquid channels are configured to minimize energy losses of the liquid and promote a more homogeneous fluid particle size in the dispensed aerosol. The aerosol tip mechanism provides for long-term sterility of the stored fluid, which in turn allows for preservation of the sterility of non-chemically preserved formulations, which may be in the form of suspension or liquid gels.

The invention discloses a fluid distributor and belongs to the fluid distributing technical field. The fluid distributor comprises a distributing pipe body and guide plates. A flow distributing groove is formed in the pipe wall of the distributing pipe body. A blanking plate is arranged at the tail end of the distributing pipe body. The guide plates are arranged in the distributing pipe body. The guide plates are connected by inlet plates and outlet plates. The plate surfaces of the inlet plates extend along the entrance direction of the distributing pipe body. The plate surfaces of the outlet plates extend along the direction of the flow distributing groove. The guide plates are sequentially ranked along the length direction of the distributing pipe body. The inlet plates are ranked of a step shape, and projected areas on a cross section of space areas of the adjacent inlet plates are basically identical. Distance from the inlet plates to the flow distributing groove increases by degrees along the entrance of the distributing pipe body to the tail end of the distributing pipe body. The fluid distributor solves the technical problems of an existing distributor that heat exchange efficiency of a heat exchanger is low due to uneven flow distributing of an existing distributor, and is particularly suitable for refrigerant distributing of a plate type heat exchanger.

The invention discloses a gas film ice prevention structure of the leading edge of a nacelle of an airplane. The structure comprises a nacelle outer wall, an annular hot gas pipe and a support plate, wherein the annular hot gas pipe is positioned in an ice prevention cavity formed by the nacelle outer wall and the support plate; the two ends of the support plate are fixedly connected with the nacelle outer wall; one side of the annular hot gas pipe close to the top of the leading edge of the nacelle outer wall is provided with an outflow hole; and the nacelle outer wall is provided with a gas film hole. By using a proactive protection strategy and introducing air through the gas film hole on an outer wall surface to quickly form hot coverage of high-temperature gas on the frozen surface, the gas film ice prevention structure has great advantages in the aspect of ice prevention timeliness; and by forming the outflow hole at the front end of the annular hot gas pipe, the head loss of hot gas in the annular hot gas pipe can be reduced, strong impact heat exchange can also be performed on an inner wall surface and heat utilization rate is improved.

The invention discloses a membrane module which can be applied to a flow battery unit. The membrane module comprises two frame bodies, multiple supporting pieces and membranes, wherein each frame body comprises a border part and a hollow part defined by the border part, at least one through hole through which liquid flows is arranged on the border part, first sides of the two border parts are arranged oppositely, second sides of the two border parts which are opposite to the first sides are respectively provided with at least one liquid flow groove extending from the through hole to the hollow part; the supporting pieces penetrate through the hollow parts in the first direction and are connected to the border parts; and the membranes can be maintained in the hollow parts of the two frame bodies by the supporting pieces. The invention also provides a flow battery unit containing the membrane module and a battery stack. By adopting the membrane module, electrolyte flowing in the membranes can be more evenly allocated, the internal resistance of the flow battery unit can be reduced and the service life of the membranes can be improved.

The invention relates to a gas-water separator of a condenser condensate sampling device, which is characterized by having the structure that the gas-water separator is provided with a tank body, an air outlet and a sampling water outlet are arranged on the tank body, a sampling water distributor is arranged in the tank body, the water inlet of the sampling water distributor and the sampling water outlet of the tank body are serially connected with a sampling tube at the inlet of a sampling pump, and the air outlet of the tank body is communicated with a gas-phase cavity which is arranged on the upper part of the condenser by a vacuum valve arranged on a return pipe. In the tank body, a filter screen is arranged below the sampling water distributor, and at the position of the filter screen, the side wall of the tank body is provided with a decontamination window. The gas-water separator of the condenser condensate sampling device can remove the gas precipitated by the sampling water in the sampling tube before the inlet of the sampling pump and leads the gas to return to the condenser in time, reduce the head loss of the sampling tube before the inlet of the sampling pump, prevent the occurrence of gas accumulation effect, stabilize the pressure of the sampling pump inlet and avoid the cavitation phenomena of the pump. The gas-water separator of the condenser condensate sampling device has the advantages of adaptability, stability, good reliability, long service life and simple structure, etc.

The invention provides an air inlet structure provided with double centrifugal fans and an air conditioner. The air inlet structure comprises a main air duct and the two centrifugal fans, wherein air outlets of air outlet channels of volutes of the two centrifugal fans communicate with an inlet end of the main air duct; the air outlet channels of the volutes of the two centrifugal fans gradually become parallel towards the direction of the air outlets and are in the parallel state at the air outlets; the air conditioner comprises a cabinet shell, a heat exchanger arranged in the cabinet shell and the air inlet structure, air flow in the main air duct of the air inlet structure is subjected to heat exchange by the heat exchanger and then is guided out through air outlet holes in the side wall of the cabinet wall. On the premise that the size of the air conditioner is reduced, the air conditioner has the advantages that the internal circulating air volume is increased, the heat exchange capacity is improved, and energy consumption and noise are reduced.

The invention relates to a bleaching and dyeing wastewater treatment method with the combination of advanced oxidation and ultrafiltration membrane separation. The bleaching and dyeing wastewater treatment method comprises four steps of pretreatment in an adjusting tank, primary advanced oxidation treatment, secondary advanced oxidation treatment and ultrafiltration membrane separation treatment. Bleaching and dyeing wastewater is collected into the adjusting tank and then enters a primary advanced oxidation tank after pH adjustment, ferrous iron and hydrogen peroxide are added for oxidation, the wastewater is oxidated and then flows into a sedimentation tank, supernate in the sedimentation tank flows into a secondary advanced oxidation tank, after the wastewater is further oxidated, a pH value is adjusted to 8.0, so as to remove iron ions and ferrous ions generated during advanced oxidation, and subsequently, the wastewater enters a rotary cross-flow type membrane separation device, so as to remove suspended matters and sediments from the wastewater and complete wastewater treatment. The method has the advantages of simple process flow, less investment, low energy consumption and simplicity and convenience in maintenance.

The present invention provides a horizontal slit type gas-water separator for gas-water separation of aeration tank effluent in the field of sewage biological treatment so as to prevent air bubbles from entering the adjacent clarifying tank. The horizontal slit type gas-water separator comprises a rising diversion inclination plate (1), a vertical direction flow stabilizing plate (2), a horizontal fixation bottom plate (3), an inclination direction diversion mud sedimentation plate (4) and a strengthening rib plate (5), wherein the horizontal fixation bottom plate (3) is connected with the bottom of the rising diversion inclination plate (1), the top of the rising diversion inclination plate (1) is connected with the bottom of the vertical direction flow stabilizing plate (2), one end of the inclination direction diversion mud sedimentation plate (4) is connected with the rising diversion inclination plate (1), the other end of the inclination direction diversion mud sedimentation plate (4) is connected with the horizontal fixation bottom plate (3), one end of the strengthening rib plate (5) is connected with the vertical direction flow stabilizing plate (2), and the other end of the strengthening rib plate (5) is connected with the horizontal fixation bottom plate (3). The horizontal slit type gas-water separator has characteristics of simple and reliable structure, good gas-water separation effect, and no requirement of external power, and provides advantages of no land occupation, investment saving, no failure, energy saving and the like compared with the conventional gas-water separation tank or gas-water separation chamber.

A spray head for a fluid product comprising: . a spray orifice (21), . a swirl chamber (20) comprising a bottom wall (12) and a side wall (25), and . swirl channels (13) respectively defining channel outlets (131) that open transversely to dispensing axis X in the swirl chamber (20), each channel (13) defining a spray axis Y that extends into the swirl chamber (20) from the channel outlet (131), the spray axes Y of the swirl channels (13) extending away from both the bottom wall (12) and the peripheral side wall (25) which are both adjacent to the channel outlets (131) in such a way as to pass through the swirl chamber (20) without passing along either the bottom wall (12) or the peripheral side wall (25).

A cleaning system (1) for cleaning a gas stream from a solidification unit (2) of a urea plant (3) comprises a first removal device (7) for removing urea powder and a second removal device (8) for removing ammonia, the two removal devices (7, 8) being arranged in series along a gas treatment circuit (13) and connected by a connecting line (16); at least one of the two removal devices (7, 8) is an electrostatic precipitator (11, 12) designed to remove substantially all or at least most of the contaminant treated in the removal device (7, 8), i.e. urea powder or ammonia.

The invention provides an optimization design method of a siphon rectifier based on ISIGHT software. Firstly, an internal flow channel model of the siphon rectifier is established and an optimizationdesign variable of the internal flow channel is determined. Then, the optimization design objective function of the internal flow channel is determined, and the constraint conditions of the internal flow channel model are determined. Finally, based on ISIGHT software, the optimization design flow of inner flow channel is designed. The optimization module integrated in ISIGHT software is used to solve the objective function iteratively, and the design parameters that make the inner flow channel performance of siphon rectifier optimal are obtained. The invention can accurately obtain the internal flow channel structure design scheme with the best performance, and has great practical value for improving the performance and efficiency of the siphon rectifier.

The invention discloses a supercharged water turbine set with multiple rotating wheels. The water turbine set comprises machine shells, a main shaft and a drainage channel, wherein at least two rotating wheels are arranged on the main shaft, the rotating wheels comprise at least one upper rotating wheel which is higher than the tail water level of the drainage channel and at least one lower rotating wheel which is lower than the tail water level of the drainage channel, an independent correspondingly machine shell and a water inlet pipe for supplying water to each rotating wheel are arranged outside each rotating wheel, the water inlet pipes are provided with a plurality of nozzles for jetting water flow to drive the rotating wheels and the main shaft to rotate towards the rotating wheels,the water turbine set further comprises air supplementing pipelines communicating with the interior of the machine shells, and the air supplementing pipelines are used for supplementing air to the rotating wheels so as to enable the rotating wheels to be positioned above the water surface. The invention aims to provide the supercharged water turbine set with the multiple rotating wheels which canensure that the rotary wheel can utilize water heads, reduce the efficiency loss and improve the power generation economic benefit.

The invention provides a water-driven filtering and reverse cleaning device for micro irrigation. The filtering and reverse cleaning device comprises two tank bodies, a water intake pipe, as well as a reverse cleaning pipe, a sewage discharge pipe and a water drainage pipe which are connected with the two tank bodies, wherein the two tanks are respectively communicated with the water intake pipe and the sewage discharge pipe by a diaphragm type water-driven two-position three-way valve respectively; each of the tank bodies is internally separated into an upper cavity body and a lower cavity body by a supporting plate; each supporting plate is provided with a laminated type water filtering cap; the cavity body above is a water distribution chamber which is internally provided with a filtering medium. The invention also provides the filtering and reverse cleaning device, and the two tank bodies operate in parallel to filter water in filtration; in reverse cleaning, the two tank bodies alternatively operate under the combined effect of different valves and the diaphragm type water-driven two-position three-way valve by a water driving mode so as to clean the tank bodies. According to the invention, water with high sand content is treated by a mode of combining filtering and sand discharge so as to solve the problem of blockage during micro irrigation, the filtering effect is good, the head loss is small, the installation and use are convenient, the work is safe and reliable, and the price is low.

The invention provides a treatment method of copper material production circulating water. The treatment method comprises the following steps: S1, discharging circulating water into an adjusting tank,and adding an alkaline reagent through an automatic dosing device to adjust the pH value of the circulating water to 8-9; S2, pumping the circulating water with the adjusted pH value, obtained in step S1 into a coagulation and precipitation integrated device, performing flocculation treatment, and then performing precipitation to obtain a supernatant and bottom sludge; S3, pumping the supernatantobtained in step S2 into an intermediate water tank, pumping the supernatant into a filter tank when the liquid level reaches a certain degree, carrying out adsorption and filtration treatment, discharging obtained purified water into a clear water tank, and directly returning the purified water to the production process for use or discharging the purified water; and S4, pumping the sludge obtained in the step S2 into a sludge tank, pumping the sludge into a sludge compression device when the sludge is accumulated to a certain amount, performing filter pressing treatment, and discharging theobtained filtrate back into the adjusting tank, for treatment, through a pipeline. The method has a good purification effect on the circulating water, and the purified water is approximately neutral,has a pure chromaticity, and can be directly recycled or discharged outwards.

The invention discloses a spiral cup water meter for agriculture, and it includes a meter body composed of tube-type flow passage and count cavity, a sealed dummy plate was set between the tube-type flow passage and the count cavity above the upper wall of the pipeline, below the dummy plate between with lower wall of tube-type flow passage was a rotating shaft, and cup wheels were symmetrically installed in the center line of on the shaft, in the front of the cup wheels was a streamlined guide plate, a supporting frame was fixed of equal altitude between the shaft and upper wall of tube-type flow passage, between the two ends of the frame and the dummy plate, space was set aside for the installation of permanent magnet, in the count cavity installed with magnetic induction receiver corresponding with the permanent magnet, magnetic induction receiver connected a counting display device. The said counting display device can be electronic counting device or mechanical counting device. The invention use streamlined guide plate and cup wheel, it is uneasy to plug, and can achieve a small headwater loss purpose.

The invention discloses a corrosion-resistant ductile iron pipe, which comprises a pipe body socket, a ductile iron cover, an external cast iron pipe, a ductile iron pipe body, an apron ring, bolts, an acid-base regulator storage ball, a connecting pipe, an anti-corrosion Corrosion layer, cement lining, external anti-erosion layer, penetration hole. The beneficial effects of the present invention are: the lining cement layer can protect water quality, reduce head loss, improve the service life of T-shaped ductile iron pipes, the anti-corrosion layer can improve the anti-corrosion ability of acid-base components in sewage, and the external anti-corrosion layer It can protect the erosion of ductile iron pipes buried under the soil for a long time, and further improve the corrosion resistance of T-shaped ductile iron pipes. The acid-base regulator storage ball is stored in the acid-base regulator, which is used to neutralize the acid-base in sewage Composition, reducing the corrosion of the inside of the ductile iron pipe, the invention effectively ensures the service life of the ductile iron pipe, and at the same time provides convenience for subsequent sewage treatment.

The invention discloses a novel active sand filter. The novel active sand filter comprises a filter tank body, a raw water inlet pipe connected to the side wall of the filter tank body, a water distributor assembly, a polluted sand collecting assembly, a polluted sand cleaning assembly, a sewage discharge assembly and a filtrate output assembly. The water distributor assembly comprises a water inlet casing pipe connected to the raw water inlet pipe and a water distributor connected to the lower end of the water inlet casing pipe. The polluted sand collecting assembly comprises an upper sand guide bucket, a lower sand guide bucket center tube and a sand transfer pipe. The sewage discharge assembly comprises a backwash sewage pipe and a backwash sewage collection cabin. The polluted sand cleaning assembly comprises a sand washer, a multi-stage air lifting pump and an air compressor. The filtrate output assembly comprises a filtered water collection bin and a filtered water output pipe. The novel active sand filter can improve the efficiency of backwashing of the polluted sand and accelerate the discharge of impurities in the filter during the process of filtering the raw water.

The invention provides a train water loading hose support device. The train water loading hose support device comprises multiple support sections connected in sequence; two adjacent support sections are hinged through hinge modules; and all the support sections are provided with limiting pieces for limiting water loading hoses and enabling the water loading hoses to freely move in the axial directions. The train water loading hose support device is simple in structure; the water loading hoses are limited and fixed through the support sections and the limiting pieces without generating the winding phenomenon, and can totally move according to a preset path without influencing normal operation of water loading robots and trains; and meanwhile, through rotary bending of all the support sections, the water loading hoses can form larger bending radiuses at the pipe bent parts, so that the water head loss in the water loading process is effectively reduced.

The invention discloses a corrosion-free energy saving chimney. The chimney comprises a chimney tube (1), a flue (2) and a spiral smoke guide line (3), wherein the spiral smoke guide line (3) is arranged on a liner (1a) of the chimney tube; a smoke inlet (10) is arranged at the lower end of the chimney tube; one end of the flue is connected at the smoke inlet (10) and is communicated with the interior of the chimney tube (1) via the smoke inlet (10); the spiral smoke guide line (3) is formed by stacking a plurality of building blocks (4) with guide parts (41); and the guide part (41) of each building block (4) is provided with a smooth slope (41a), so that the slopes (41a) of all the building blocks (4) stacked together are smoothly connected, thus forming a guide surface (31) for the smoke to rise in a rotary manner. The chimney has the following beneficial effects that: the energy consumption of the draught fan can be reduced by about 20%, thus being beneficial to saving energy; meanwhile, the problem of corrosion of the inner tube and outer wall of the wet chimney after desulfurization can be thoroughly solved; and compared with the existing chimneys, the chimney has obvious energy saving and environmental protection effects and lower manufacturing cost.