153results about How to "Avoid clogging pipes" patented technology

The invention provides a method for recycling acidic vanadium deposit wastewater. The method comprises the following steps: adjusting the acidic vanadium deposit wastewater to be alkaline by lime milk, then carrying out solid-liquid separation to obtain an alkaline solution and a gypsum residue; adding a decalcifying agent into the alkaline solution for decalcifying, then carrying out solid-liquid separation to obtain a supernatant liquor and a decalcified residue; and adjusting the pH of the supernatant liquor to be 3-7 by sulfuric acid, then returning the supernatant liquor to the leaching step for recycling. Due to the adoption of the method for recycling the acidic vanadium deposit wastewater, concentration of calcium ions in the solution returned to the leaching step can be effectively controlled, calcium sulfate deposit is prevented from being formed, a pipeline and a water outlet are prevented from being blocked due to calcium sulfate scale, and the production equipment is guaranteed to run normally.

The invention provides a conveying control method for a pneumatic conveying system. The conveying control method comprises the following steps of: 1) opening a fluidifying air valve, closing a pipeline air supply valve, comparing conveying real-time pressure with a conveying pressure upper limit, and normally conveying when the conveying real-time pressure is less than or equal to the conveying pressure upper limit, transferring to step 2) when the conveying real-time pressure is more than the conveying pressure upper limit and less than a blockage pressure set value, and transferring to step3) when the conveying real-time pressure is more than or equal to the blockage pressure set value; 2) closing the fluidifying air valve, opening the pipeline air supply valve, and transferring to thestep 1) when the conveying real-time pressure is reduced to a conveying pressure lower limit; and 3) closing all the air valves, transferring to an automatic blockage clearing program, and transferring to the step 1) after the blockage clearing is completed. In the conveying control method, the logic judgment is added on a control system, corresponding air valves are controlled to be opened and closed according to judgment results, the blockage phenomenon is effectively avoided, the time for blockage clearing of the system is shortened, the abrasion and the energy consumption of the system are reduced, and the reliability of the pneumatic conveying system is improved.

The invention discloses composite micro-electrolysis filler as well as a preparation method and application thereof, and belongs to the field of wastewater treatment. The micro-electrolysis filler is prepared from the raw materials such as iron powder, charcoal active powder, a dispersing agent, a binding agent, a catalyst and the like. By applying the micro-electrolysis filler into the wastewater treatment, the problem that traditional micro-electrolysis filler is likely to harden and passivate can be solved, the biodegradability of wastewater can be obviously improved, and the wastewater processing efficiency is improved.

Disclosed are a cotton sliver mercerizing process and a mercerizing device utilizing the same, which belong to the technical field of textile technology. The cotton sliver mercerizing process includes: a, cotton sliver pretreatment step including dewing cotton slivers and dewatering the same or squeezing water out of the same to form wet cotton slivers with certain liquid content; b, a cotton sliver reeling step including reeling the wet cotton slivers on a reeling machine and fixing the cotton slivers by lay bands; c, a covering step including wrapping the reeled cotton slivers with the wrapping cloth integrally; and d, a mercerizing step realized by concentrated spraying and instant squeezing. The sliver cottons are mercerized effectively by dewing to reinforce and by means of concentrated spraying and instant squeezing, and alkali content of the cotton slivers is controlled all the time, so that the cotton slivers cannot be dissolved due to excessive swelling, and the difficult problem of failure in mercerizing the cotton slivers without twist is solved. In addition, the mercerized cotton slivers are bright, smooth and fluffy, and dye color yield is increased by 20%-30%.

The invention discloses a sewage draining device for achieving pipeline blocked avoidance. The sewage draining device comprises a centrifugal pump, a filter pipe is fixedly mounted on a water inlet pipe of the centrifugal pump, a first fixing seat is fixedly mounted at the top of the filter pipe, a second fixing pipe fixedly mounted at the top of the filter pipe is arranged on the side, away fromthe centrifugal pump, of the first fixing seat, a first through hole is formed in the side, close to the second fixing seat, of the first fixing seat, a first rotary shaft is rotatably mounted in thefirst through hole, one end of the first rotary shaft extends out of the first through hole, and rotatably mounted on the second fixing seat, a motor is fixedly mounted on the side, away from the second fixing seat, of the first fixing seat, and an output shaft of the motor extends into the first through hole, and fixedly connected with the first rotary shaft. The sewage draining device is simplein structure and high in practicality, not only can large impurities in sewage be prevented from entering a sewage draining pipeline, the sewage draining pipeline is prevented from being blocked, butalso the large impurities in the sewage can be crushed, and thus normal flowing of the sewage is facilitated.

The invention provides a formula of pumping light aggregate concrete. In the formula, the pumping light aggregate concrete comprises cement, coal ash, rubber materials, sand, ceramsite, additive and water, wherein the cement is of P.042.5 level cement and has the 28-day tensile strength of 49.6MPa, the weight percentage of the coal ash is 60-80%, the fineness of the coal ash is 6.3%, the ignition loss is 3.6%, and the water demand ratio achieves 92%; and the weight ratio of the water and the rubber material is 0.44. Compared with the prior art, the formula of pumping light aggregate concrete solves the problem of pumping the light aggregate concrete, prevents pipe blocking, improves the concrete workability by regulating the proportion of raw materials of coal ash and the like, improves the concrete cohesiveness, solves the technical problem of pumping difficulty, and improves the construction efficiency.

The invention relates to a 360-degree combing assembly of a waste processor. The 360-degree combing assembly comprises a filtering chassis and a stirring paddle, wherein the filtering chassis is fixedly arranged in the waste processor; the stirring paddle is rotatably arranged above the filtering chassis; a plurality of filtering holes are formed in the surface of the filtering chassis; lower comb teeth are arranged on the top surface of the filtering chassis in the radial direction; upper comb teeth are arranged on the bottom surface of the stirring paddle; and the upper comb teeth and the lower comb teeth are staggered. According to the waste processor, through the stagger cooperation of the lower comb teeth of the filtering chassis and the upper comb teeth of the stirring paddle, when the stirring paddle rotates, the upper comb teeth pass through the tooth spaces of the lower comb teeth and can shear, so that relatively large food waste which can not pass through the tooth spaces can be cut off by the shearing force so as to be broken via repeating for a plurality of times, so that the waste treatment is relatively environment-friendly and a pipeline is prevented form being blocked.

The invention relates to the technical field of engineering machinery and discloses a hydraulic valve, a hydraulic system and concrete pumping equipment, wherein the hydraulic valve comprises a valve body, a valve rod and a driving part, wherein the valve body is provided with a valve cavity; the valve rod is arranged in the valve cavity; the driving part drives the valve rod to move in the valve cavity; the valve cavity is provided with a first oil inlet, a second oil inlet, a first oil outlet and a second oil outlet; under a first working state, the first oil inlet is communicated with the first oil outlet; the second oil inlet is communicated with the second oil outlet; under a second working state, the first oil inlet and the second oil inlet are respectively communicated with the first oil outlet, and the second oil outlet is closed; and under a third working state, the first oil inlet and the second oil inlet are respectively communicated with the second oil outlet, and the first oil outlet is closed. The embodiment of the invention provides the hydraulic system applying the hydraulic valve, so that the function of mutual oil filling or emergent oil supplying are achieved between the hydraulic system for pumping and a hydraulic system of an arm frame, and the occurrence of the phenomenon that the progress of the engineering is influenced or pipes are blocked is effectively avoided.

The invention relates to a conveying pipe sleeve for a pumping concrete construction. The conveying pipe sleeve is in cup joint at the outer side of a conveying pipe (1), and is spliced by multiple sections of pipe sleeve units in a length direction of the conveying pipe; each section of the pipe sleeve unit is spliced by more than two pipe piece units; the pipe piece units are sealed cavities consisting of outer walls (4), inner walls (5), upper bottom surfaces, lower bottom surfaces and two side sealing plates (10); phase change materials (6) are filled in the sealed cavities; electric heating devices (7) are arranged at the inner sides of the inner walls, and temperature sensors connected with temperature control devices of the electric heating devices are embedded at the outer sides; and the inner sides of the outer walls are provided with reflective film layers (8) and heat insulating layers (9) in sequence from top to bottom. The multiple pipe piece units are clamped and fastened on the outer surface of the conveying pipe through connecting parts (11); the multiple sections of the pipe sleeve units are longitudinally spliced; and the upper and lower bottom surfaces of the adjacent pipe piece units are respectively provided with concave parts (12) and convex parts (13) with matched shapes. The pipe sleeve is simple in structure and convenient to be disassembled, prevents the blockage caused by low temperature, and improves the energy utilization rate.

The invention belongs to the technical field of metal surface treatment, and discloses a graphene-coated aluminum composite coating, a preparation method and application thereof. The preparation method comprises the steps that aluminium powders are put into a graphene oxide aqueous solution and are subjected to a mixing reaction, and thus graphene-coated aluminium powders are obtained; a metal surface is subjected to roughness fabrication adopting a method of mechanical treatment, and the metal surface with roughness is obtained after being cleaned and dried; a cold spraying device is started,and the graphene-coated aluminium powder is put into a specified powder feeding tube; and the metal surface with roughness is installed on a specific fixture, a cold spraying technological parameteris set, and the spraying device is started to deposit the composite graphene-coated aluminium powders on the metal surface with roughness, and the preparation of the graphene-coated aluminum compositecoating is carried out. According to the aluminium powders coated through the preparation method, the surface hardness is improved, the fluidity is better, and the phenomenon of tube plugging duringspraying is avoided, and thus the spraying efficiency is improved. The structure of the graphene-coated aluminum composite coating has high compactness, can efficiently insulate eroding ions, has higher corrosion resistance and can be used in the field of corrosion prevention.

The invention discloses a continuous sounding pipe installation method for detecting a concrete filling pile through an acoustic transmission method. The method comprises the steps that firstly, a steel pipe framework is put to the bottom of the pile axuilairily; a continuous sounding pipe is installed at one time through a sounding pipe passage formed by the installed steel pipe framework, and the bottom of the pipe is sealed when the continuous sounding pipe is put to the bottom of the pile; concrete is injected, the steel pipe framework is pulled out section by section in the injecting process, and the continuous sounding pipe is left in concrete to become a passage to defect the completeness of a pile body structure through the acoustic transmission method; the completeness of the pile body structure is detected through the acoustic transmission method. The continuous sounding pipe installation method and device for detecting the concrete filling pile largely improve work efficiency, save a large number of steel materials, reduce the construction cost, improve economic benefits and have great application prospects in pile foundation construction of railways, highways, airports and the like.

The invention discloses a sewage discharge and deodorization device for a municipal engineering sewage pipeline. The sewage discharge and deodorization device comprises a wall, an anti-fall cover, a rotary turbine and a cylinder and is characterized in that a sewer is reserved at the bottom of the wall, a prefabricated well is mounted in the middle of the wall in an embedded manner, a fixing ringis fixed to the inner wall of the prefabricated well, a slide groove is formed in the inner wall of the fixing ring, one end of a slide support is fixedly connected to the bottom edge of the anti-fallcover, a support rod is fixedly mounted on the lateral side of the slide support at the bottom of the anti-fall cover, turbine blades are welded to the top edge of the anti-fall cover, the rotary turbine is fixedly mounted on a fixing seat, a guide cylinder is in through connection with the bottom of the cylinder, and a sealing rubber ring is embedded into the edge of the inner wall of a flow sealing plate. The sewage discharge and deodorization device has the advantages that odor in the sewer can be isolated, municipal environment pollution caused by odor spreading is avoided, pedestrian safety can be protected when a well lid is damaged, and silt accumulation, which causes pipeline blocking, in the pipeline is avoided.

The invention discloses a multi-pipe revolving low-temperature dry distillation technology of fine coal. The technology comprises steps that: (1) fine coal requiring dry distillation is distributed into a cylinder of a multi-pipe revolving dry distillation machine; flue gas mixed and regulated in an air mixing chamber is delivered into a plurality of heat exchange tubes arranged in the cylinder of the multi-pipe revolving dry distillation machine; and fine coal in the cylinder is heated; (2) when heat is absorbed by the fine coal in the cylinder, the fine coal is pyrolyzed, such that hot semi-coke and dry distillation gas are produced; (3) the hot semi-coke is cooled in a coke cooling machine, the semi-coke is delivered to a next process, and is collected and stored; a next section is proceeded; (4) the dry distillation gas is delivered into a coal gas cooling, cool gas purifying, and tar collecting system; (5) the flue gas discharged after the heat exchanging process is delivered into a waste heat boiler for producing low-pressure vapor; a part of the low-temperature flue gas which leaves the waste heat boiler is refluxed for regulating the temperature of the flue gas, and another part of the low-temperature flue gas is delivered into a low-temperature flue gas system where the heat of the flue gas is recycled. According to the invention, the fine coal passes through a shell pass, and the flue gas passes through a tube pass. Therefore, problems of difficult material distribution, high requirements on cylinder thermal insulation and easily blocked pipe of the multi-pipe revolving dry distillation machine are solved.

The invention discloses a natural gas hydrate compound exploitation method. The natural gas hydrate compound exploitation method comprises the following steps that an exploited well, an injection wellA and an injection well B are arranged at a stratum position of a natural gas hydrate to be exploited, and the injection well A and an injection well B are arranged on the two sides of the exploitedwell; a solid-state crushing drill rig and auxiliary equipment are lowered into a natural gas hydrate storage layer through the injection well B, after the storage layer is drilled, a drill hole is parallel to a horizontal line to continue to drill to crush the storage layer; the exploited well is closed, a carbon dioxide control platform is controlled, and carbon dioxide is injected into the natural gas hydrate storage layer through the injection well A; a drilling liquid control platform is controlled, and drilling liquid is injected into the natural gas hydrate storage layer through the injection well B; and the exploited well is opened, and natural gas generated in the storage layer is extracted to an offshore platform. According to the natural gas hydrate compound exploitation method,the advantage of good stability of the carbon dioxide hydrate is used, the stability of the stratum is ensured, geological disasters and mass decomposition of the hydrate are avoided, and meanwhile,the yield of the natural gas hydrate is effectively improved through favorable reaction conditions provided by the drilling liquid.

The invention discloses a water seepage and flood drainage system based on a sponge city. The water seepage and flood drainage system comprises an artificial wetland, wherein the artificial wetland is connected with a buffer tank by virtue of a second water pipe, and the buffer tank is connected with a river by virtue of a first water pipe; the artificial wetland is successively provided with a sterilizing layer, a first isolation layer, a water storage layer and a planting layer from bottom to top; soil is arranged in the planting layer, and emergent aquatic plants are planted on the planting layer; coarse sand is arranged in the water storage layer; a mud separation plate for blocking mud and sand is arranged in the first isolation layer, and the mud separation plate is wrapped with geotechnical cloth; and a plurality of volcanic rocks are arranged in the sterilizing layer. The water seepage and flood drainage system based on the sponge city solves the problem that the rainy and flood water is difficult to seep and accumulate for use; and meanwhile, the system can effectively alleviate the flood leak pressure of a river, can improve the convenience of the municipal water application and can realize a function of seeping, collecting, purifying, storing and utilizing the river water and rainy water.

The invention discloses a seawater desalinating device, relating to equipment with a small falling film evaporator and particularly relating to a device which carries out transverse-tube falling film evaporation by using solar energy. The seawater desalinating device comprises a seawater pretreatment system, an evaporator, a self-excited transverse-tube falling film evaporation-condensation device, a condenser, a grooved solar device and the like, wherein heat collected by the grooved solar device is transferred to the evaporator through heat exchange so as to supply a power source to the whole device. According to the seawater desalinating device, a pressure regulating device is arranged, so that the problem of control on difference of pressure inside the evaporator and the self-excited transverse-tube falling film evaporation-condensation device is solved; pretreated seawater is subjected to further filtering, so that the problem of pipeline blockage caused by seawater subjected to falling film is solved; and desalinated water collection tanks which are simple in structure and convenient in use are provided, so that the problem of low water yield caused by the fact that steam is condensed on an interior wall is solved. Compared with the prior art, the seawater desalinating device has the advantages that the effect on reducing the steam waste caused by wall condensation can be achieved, so that the water yield is increased.

The invention relates to a treatment process of high-salinity wastewater, and belongs to the technical field of wastewater. The treatment process of the high-salinity wastewater comprises the following steps: S1, recovering oil in extraction wastewater by adopting an oil removal method of adsorption resin adsorption, and conducting filtering to obtain oil-removed wastewater; and S2, adding metal ion exchange resin into the oil-removed wastewater to remove heavy metals. Metal ion exchange resin is used for adsorbing heavy metals, resource recycling of heavy metal ions and ammonium sulfate is performed after adsorption treatment, and evaporated water after wastewater treatment can be returned to each water use process for use, so that high-salinity wastewater can be subjected to resource utilization and harmless treatment, a large amount of water resources can be saved, moreover, the resource utilization of the wastewater is a new benefit growth point, and the method has important significance in realizing water conservation and emission reduction.

The invention discloses a urea hydrolytic and pyrolytic compound ammonia preparation system for the denitration in a thermal power plant. The urea hydrolytic and pyrolytic compound ammonia preparation system comprises a urea solution inlet pipe, a hydrolytic reactor, a decarbonization tank, a desalted water pipe and an exhaust fan, wherein the urea solution inlet pipe is communicated with an inlet in the side surface of the hydrolytic reactor; the bottom of the hydrolytic reactor is provided with a steam heater for heating a urea solution in the hydrolytic reactor; a top outlet of the hydrolytic reactor is communicated with a bottom inlet of the decarbonization tank; a desalted water inlet in the side surface of the decarbonization tank is communicated with the desalted water pipe; the exhaust fan is located at a top opening of the decarbonization tank; a bottom outlet of the decarbonization tank is communicated with an ammonia water pipe. The system is low in energy consumption; a product cannot block a pipeline; moreover, the cost is low.

The invention relates to a concrete wet spraying machine chassis, which comprises a bearing chassis body and a travelling system. The travelling system comprises a front axle, a transmission shaft, arear axle and a hydraulic transmission system; the front axle and the rear axle are fixed to the front and rear parts of the bottom of the bearing chassis body, and connected through the transmissionshaft; the transmission shaft comprises a front transmission shaft, an intermediate transmission shaft and a rear transmission shaft; the hydraulic transmission system comprises an engine, and furthercomprises a travelling pump and a steering brake pump which are arranged on the engine, a travelling motor and an electromagnetic directional valve, the output end of the steering brake pump is connected with the electromagnetic directional valve, the electromagnetic directional valve is connected with a steering oil cylinder, the travelling pump is connected with the travelling motor in a transmission mode, the output end of the traveling motor is connected with a gearbox, the gearbox is connected with a main reducer of the front axle and the transmission shaft, and the transmission shaft isconnected with a main reducer of the rear axle. The invention further relates a concrete wet spraying machine. According to the concrete wet spraying machine chassis and the concrete wet spraying machine, the operation efficiency is high, the labor intensity is low, the passability is good, and the turning radius is small.