62results about How to "Won't cause clogging" patented technology

The invention belongs to the technical field of solid waste pollution control, and relates to a method for making biogas from waste, which comprises the following steps: (1) pretreating the waste; (2) feeding the waste into a waste loading area for hydrolysis and acidification; (3) feeding the material subjected to hydrolysis and acidification in step (2) into a microbial inoculum loading area, and performing biogas production reaction under the effect of the microbial inoculum; (4) flowing out the material treated in step (3) from the microbial inoculum loading area, and returning to the waste loading area for further hydrolysis and acidification; and (5) repeating the cycle from step (2) to step (4) multiple times until the conversion of the waste into biogas is maximized. The invention overcomes the disadvantages of high rancidity possibility, long gas production start time, low gas production yield and gas production rate and the like of the waste conventional biogas utilization system, can greatly accelerate the gas production process of the rancidity-prone waste with a small amount of microbial inoculum, increases the gas production yield of the waste, lowers the amounts of leavings and waste liquids, and decreases the volume of a reactor and the operating cost.

The invention discloses a fine filter device of a high pressure back-flush rotary filter drum. The fine filter device comprises a shell, a filter drum, a sewage inlet pipe, a sewage discharge pipe, a back-flush water inlet pipe, a water outlet pipe and a high pressure fixed spray pipe, wherein the high pressure fixed spray pipe is arranged in the filter drum; one end of the water outlet pipe is connected with a water inlet with a filter screen; the end with the filter screen of the water inlet with the filter screen is positioned in the filter drum; one end of the filter drum is connected with the high pressure fixed spray pipe through a first bearing, and the other end of the filter drum is connected with the water inlet with the filter screen; one end of the water inlet with the filter screen is arranged on the shell through a second bearing, and the other end of the water inlet with the filter screen is connected with the high pressure fixed spray pipe through a third bearing; the top of the shell is provided with a motor; an output shaft of the motor is provided with a driving chain wheel; a driven chain wheel is arranged at a connecting end of the filter drum with the water outlet pipe; and the driving chain wheel is connected with the driven chain wheel through a chain. Double filtration is formed through the filter screen on the filter drum and the water inlet with the filter screen, so that the filtration accuracy of water is improved.

The invention relates to a wet chemical preparation method for a ceramic separation membrane. The method provided by the invention comprises the following steps: adding aluminum oxide particles with the particle size of 30-70 micrometers and an aqueous solution which is prepared by dissolving aluminum nitrate, titanium alkoxide and lanthanum nitrate or yttrium nitrate in advance into a sufficientquantity of ammonia water; adjusting the pH value to 8-10; after fully reacting at 65-90 DEG C, precipitating, washing, aging and drying; presintering at 500-800 DEG C to obtain the aluminum oxide particles coated with nano oxides; after mixing the aluminum oxide particles coated with the nano oxides and an organic molding assistant, kneading to form plastic pug; extruding to form a green body ofa support body; sintering the green body for 0.5-5 hours at 1450-1700 DEG C to form the support body; and coating a membrane and sintering to obtain a ceramic separation membrane product. The preparation method provided by the invention has the advantages that a nano material is utilized to coat Al2O3 powder, thus spherical particles with high sintering activity is obtained, a molding formula andprocess in production procedures can be simplified and the complicated courses of drying the green body and turning over the green body can be avoided.

The invention discloses a device for treating food wastes. The device comprises a machine enclosure, a grinding device, a drainage device, an alternating current (AC) motor, a controller and a switch,wherein a feed barrel, formed into a whole together with the machine enclosure, is arranged at the center of the upper end of the machine enclosure; a feeding hole is formed in the upper end of the feed barrel, and a blanking hole passing through the interior of the machine enclosure is formed in the bottom end of the feed barrel; the machine enclosure is internally provided with the grinding device and the drainage device; the AC motor is arranged in the machine enclosure and under a drainage plate; a rotating end of the AC motor is connected with a rotating shaft by means of a coupler; thecontroller and a rotating speed sensor are arranged in the machine enclosure and at one side of the AC motor; the rotating speed sensor is used for detecting the rotating speed of the AC motor. The device for treating the food wastes has the beneficial effects of being simple in structure and high in practicality.

The invention discloses an improved vertical type spiral discharge filtering centrifuge. The improved vertical type spiral discharge filtering centrifuge comprises a centrifuge base, a shell, an inner guide conical barrel, an outer guide conical barrel, an upper drum, a lower drum, an upper drum filter screen, a lower drum filter screen, a spiral conveyor, a material accelerating disc, a spiral blade, a differential mechanism and the like. A poor-liquidity or solid breakable solid-liquid mixture enters the material accelerating disc from the inner guide conical barrel and the outer guide conical barrel and enters a centrifugal dehydration cavity after acceleration. Materials are not liable to be blocked and not liable to be broken by the spiral blade. In order to prevent the materials from spattering and overflowing from the top of the upper drum, the material accelerating disc shall be a distance lower than the top end of the upper drum. In order to prevent the materials being attaching to the upper drum filter screen in a self-locking mode, the half cone angle of the inner wall of the upper drum shall be larger than the frictional angle of the materials and the upper drum filter screen. After the materials enter the centrifuge, liquid is discharged from the drums and liquid discharge holes of the filter screens through centrifugal force, solids are pushed into solid discharge holes of the drums by the spiral blade through rotation speed difference generated by the differential mechanism and discharged from a solid discharge pipe on the side lower portion of the shell through centrifugal force, and automatic and continuous dehydration separation is achieved.

The invention discloses a super-clean treatment process system for flue gas, relates to the field of super-clean emission treatment of flue gas from industrial boilers and kilns and solves the problems that performance of the existing SCR denitration system is greatly affected by load fluctuation, resistance is higher, dust removal efficiency of a pre-dedusting device is low, and secondary dust removal equipment needs to be added in front of an induced draft fan to realize super-clean emission. The super-clean treatment process system comprises a smoke temperature regulating system, a dust remover, an SCR reactor, a waste heat recovery system, an induced draft fan and super-clean desulfurization dust removal equipment which are sequentially connected from front to back, one end of a reducing agent system is communicated with an inlet of the dust remover, the other end of the reducing agent system is communicated with an inlet of a disturber, the disturber is arranged at an inlet of theSCR reactor, a first thermocouple is arranged at an inlet of a high-temperature heat exchange surface, a second thermocouple is arranged at an outlet of the high-temperature heat exchange surface, and a third thermocouple is mounted between an outlet of a medium-temperature three-way valve and the dust remover. The process system is used for realizing super-clean flue gas emission denitration treatment of first dust removal and later smoke removal treatment.

The invention provides a method for applying farm fertilizer water to a drip irrigation system. Drip irrigation cultivation agronomic measures are combined, the reverse anti-blocking thought of filtration+emulsification+filtration is adopted, large-particle-size suspended solids are sheared and crushed while being filtered, and the problem that the drip irrigation system is blocked due to the factthat the particle size of the culture fertilizer water suspended solids is too large in particle size is solved. According to the method, crop drip irrigation cultivation agronomic measures are closely combined and fully utilized, the fertilizer water utilization period is long, the fertilization cost is saved, fertilizer water can be continuously matched at the flow rate of 10-200 m<3>/h according to different water flows of drip irrigation head and branch (bucket and trunk) canals, the method is suitable for large and medium-sized farms, and fertilizer water utilization can be completed within a short time. The method is simple in process, higher in nutrient content in fertilizer water compared with a filtering type process, and beneficial to improving soil fertility and crop yield andquality.

The invention discloses a sewage treatment dry powder wet agent adding device free of dust leakage and thorough in dispersion, and belongs to a mixer in the technical field of water treatment. The device is mainly formed by an agent dissolving tank, a liquid storage cavity, an air stirring device and an exhaust device and is characterized in that 1, an agent powder dispersing link and a pump conveying link are separated through the agent dissolving tank and the liquid storage cavity; 2, multi-center pneumatic stirring is utilized or combined with mechanical stirring; 3, negative pressure is formed in the agent dissolving tank. Compared with the prior art, the device has the advantages that 1, pump blocking is avoided by designing the agent dissolving tank and the liquid storage cavity; 2,by means of multi-center pneumatic stirring or combination of multi-center pneumatic stirring and mechanical stirring, agent powder and water are dispersed thoroughly; 3, by means of the negative pressure of the agent dissolving tank, the dry agent powder which is not wet by spraying cannot flutter out of an agent adding chute opening, and inconvenient influence on an operator is avoided.

The invention discloses a self-cleaning and cleaning-free odor-resistant floor drain. The self-cleaning and cleaning-free odor-resistant floor drain comprises a floor drain seat, a face plate covers the floor drain seat, a water inlet hole is formed in the face plate, the face plate is concave in an arc shape, a direct drainage floor drain core is detachably and tightly installed on the floor drain seat, and a valve type sealing plate is installed on the direct drainage floor drain core in a hinged mode. The self-cleaning and cleaning-free odor-resistant floor drain is scientific and reasonable in structure, a filter screen does not need to be arranged, due to the fact that the face plate is in the arc-shaped concave shape, the water inlet holes communicate, the shapes of the water inlet holes are not limited, in the drainage process, impurities such as hair can be directly discharged into the direct drainage floor drain core through water washing, then the impurities can be discharged through the direct drainage floor drain core by opening the valve type sealing plate, hair hanging is avoided, blocking is avoided, the self-cleaning function is achieved, the cleaning-free effect is achieved, the valve type sealing plate recovers the closed state after discharging is completed, and the odor-resistant and insect-resistant effects are achieved.

The invention discloses a novel middle waste absorbing punching roller. The novel middle waste absorbing punching roller comprises an upper punching roller body, a lower punching roller body and a waste outlet. The upper punching roller body and the lower punching roller body are hollow rollers. The waste outlet is communicated with the lower punching roller body. The upper punching roller body and the lower punching roller body are provided with an upper punching die and a lower punching die respectively, and the upper punching die and the lower punching die are meshed with each other. The novel middle waste absorbing punching roller has the advantages of being high in speed and precision and low in noise, the working efficiency can be improved, and the comprehensive cost can be lowered.

The purpose of the invention is to provide a grindstone such that grinding, polishing, and super-fine polishing can be achieved using the same grindstone and without causing clogging when used continuously. The invention provides a grindstone having a grinding/polishing part which is for working a workpiece and which has a honeycomb structure comprising polygonal columns arranged without any gap therebetween, wherein the grindstone is provided with grinding columns, each comprising abrasive grains (5) and a binding material (6), having an axis L in the depth direction of a surface to be ground/polished, and disposed at an intersection or on a wall part of the honeycomb structure. A porous elastomer disposed inside the honeycomb, thereby enabling super-fine polishing.

The invention discloses a reaction device for a uranium fluorination reaction in a molten salt system and an operation method thereof. The reaction device comprises a fluorination reactor, and is characterized in that the inner wall surface of the fluorination reactor is provided with a crucible lining with the thickness being 2-5 mm, wherein the crucible lining is a nickel metal crucible lining,a nickel-based alloy crucible lining, a ceramic crucible lining or a graphite crucible lining; a filter is arranged on a pipeline where a gas product outlet of the fluorination reactor is located; a filter filler in the filter is fluoride particles with the grain size being 2-6 mm, the fluoride particles are one or more of sodium fluoride particles, magnesium fluoride particles, barium fluoride particles and potassium fluoride particles; the filling diameter of the filter filler is 3-10 cm; and the ratio of the filling height of the filter filler to the filling diameter of the filter filler is3-10. The reaction device is able to resist double corrosion of high-temperature fluorine salt and fluorine gas without causing blockage of an outlet gas pipe and a valve of the reactor, and long-term safe operation of the reactor can be achieved.

The invention discloses a corn thresher. The corn thresher comprises a threshing bin, a feeding hopper and supporting legs. The corn thresher is characterized in that the bottom of the threshing bin is open, the two ends of a net-shaped conveyor belt are supported through conveyor belt gear sets, one end of each conveyor belt rotary shaft penetrates through the threshing bin, second conveyor beltgears are installed at ends, the tail of one end of a threshing roll of a threshing roll set penetrates through the threshing bin, a threshing roll gear set is installed at the end, one threshing rollend of the threshing roll set is further sleeved with a first driven belt wheel, the output end of a motor is sleeved with a first driving belt wheel and further sleeved with a second driving belt wheel, a brick laying shaft is sleeved with a second driven belt wheel, an umbrella-type gear set is installed on the brick laying shaft and provided with a power shaft, a first conveyor belt gear is installed at one end of the power shaft, and the distance between the threshing roll set and the net-shaped conveyor belt is gradually decreased in the moving direction of corn con threshing.

The invention discloses a maintenance wiping method and a maintenance wiping wet tissue for an ink-jet printer nozzle. The maintenance wiping wet tissue is composed of the following components including, by weight, 10% of NPGDA, 33% of TPGDA, 24% of HDDA, 23% of DPGDA and 10% of a surfactant. A using method of the maintenance wiping method for the ink-jet printer nozzle comprises the following steps that 1, materials are prepared, wherein foam and a wet tissue body are prepared; 2, the foam is taken up and placed flatly; and 3, the viscous force of a hook-and-loop fastener loop surface and a hook-and-loop fastener hook surface are overcome, a fixing band is uncovered, and one end of the fixing band is far away from the foam. The maintenance wiping method and the maintenance wiping wet tissue for the ink-jet printer nozzle has the beneficial effects that a traditional ink-jet printer nozzle maintenance wiping method is changed, the wiped nozzle is not damaged, head drying, head blockingand damage of the nozzle cannot be caused, the wiping effect is obvious, the service life of the nozzle is prolonged, the cost is saved, and the consumption is reduced; and due to the addition of thesurfactant, the sterilization effect is improved.