36results about How to "Help broken" patented technology

Belonging to the technical field of solid waste treatment, the invention relates to a method for promoting anaerobic digestion of excess sludge through pretreatment of ultrasonic waves and hydrogen peroxide. The method comprises: subjecting the excess sludge of an urban sewage treatment plant to gravity thickening, then adding a certain amount of hydrogen peroxide, conducting rapid stirring and sending the sludge into an ultrasonic reactor for ultrasonic treatment, in which the combined action of ultrasonic waves and hydrogen peroxide destroys the bacterial cell wall structure of the sludge, thus leading to leakage of the cell contents and content increase of dissolved organic matters in water, then sending the treated sludge into an anaerobic digestion reactor for subsequent mesophilic anaerobic digestion; delivering the biogas generated from anaerobic digestion to a gas collection gas for comprehensive utilization. After treatment, the concentration of SCOD (soluble chemical oxygen demand) in the liquid phase sludge can be increased by 23.83 times to 41.18 times, the biogas output can be increased by 17.40%-55.37%, and the methane content of the biogas can be increased by 10%-20%, thus reducing the energy consumption of ultrasonic treatment. For sewage treatment plants of different scales, only by making corresponding modification on existing facilities can good effects be achieved.

The invention relates to a method for utilizing enhanced pretreatment to promote the anaerobic digestion of excess sludge, belonging to the technical field of solid waste treatment. The method comprises the following steps of gravity concentrating excess sludge in urban sewage treatment plants, and then adding certain amount of sodium hypochlorite, stirring the sodium hypochlorite fast with the excess sludge, and then feeding the mixture into an ultrasonic reactor to perform ultrasonic treatment. With the coaction of the ultrasonic and the sodium hypochlorite, the bacterial cell wall structure in the sludge is damaged, the inclusion of the cell is discharged, the content of soluble organic substance in the water is increased, after certain time of treatment, the sludge is fed into an anaerobic digestion reactor to perform subsequent medium temperature anaerobic digestion; the biomass gases generated by the anaerobic digestion are comprehensively utilized through a gas collection device. The concentration of SCOD (soluble chemical oxygen demand) in the sludge liquid phase is improved by about 27 times after the treatment, the biomass gas yield is increased by 54.4%, and the content of methane in the biomass gas is improved by about 10%, so that the energy consumption of the ultrasonic treatment is reduced greatly. With the adoption of the method provided by the invention, for the sewage treatment plants with different sizes, a good effect can be obtained by performing corresponding reconstructions on the existing treatment facilities.

The invention provides a titanium-steel dissimilar metal structure and a manufacturing method thereof. The meshing-corresponding sawtooth structure with high integrating degree is obtained by a stacking-and-lapping mode; a composite plate is obtained by meshing-connection; and high-quality welding of titanium-steel dissimilar metal is achieved by a stirring-friction welding method. The influence on the performance of a dissimilar metal stirring-friction welding connector by deviation is not necessarily to be considered; and asymmetry of a forward side and a backward side in the traditional butt joint process is eliminated. The sawtooth meshing structure is adopted, and therefore action of welding force on materials during the welding process is improved to assist material smashing, the linear contact area of the dissimilar metal is increased, relative movement distance of metal atoms is shortened so that more atoms can move under the same energy, the mutual flow and mutual mixing capacity of the dissimilar metal materials can be improved, the problem of nonuniform connector tissue mixing is avoided, interlocking mixing of weld joint materials is improved, and strength of the connector is greatly improved.

The invention discloses an ultrasonic efficient atomization device of water currents under narrow-slit airflow oscillation stirring. The device comprises a liquid-air leading shell and an atomization device generation shell; a liquid-air leading valve element is arranged in the liquid-air leading shell; an airflow gradual shrinking narrow-slit channel is formed in the outer side of the valve element; a center through hole of the liquid-air leading valve element is a jet water gradual shrinking channel, and a jet water outlet at the tail part is aligned with a water current ultrasonic oscillation cavity; an airflow self-exciting oscillation cavity is formed in the tail end of the atomization device generation shell; a horn-shaped airflow baffle plate is arranged in the center of the airflow self-exciting oscillation cavity; a water mist gradual shrinking channel is formed in the airflow baffle plate; and the water mist gradual shrinking channel, a water mist guide channel and a water mist jet outlet are smoothly transited and connected. An air flow enters the airflow self-exciting oscillation cavity after being accelerated by the airflow gradual shrinking narrow-slit channel; and the airflow baffle plate and the airflow self-exciting oscillation cavity are matched to form an airflow self-exciting oscillation field so as to successfully realize efficient liquid atomization. The device has the advantages of high atomization efficiency and simple structure, and is also suitable for efficient atomization of other liquid.

The invention provides a device and a method for densely reinforcing a miscellaneous fill foundation through deep resonance. The method comprises the steps that after a vibrating rod is sunk into a soil body, the frequency of a vibrating hammer is adjusted to the resonance frequency of a vibrating rod-soil system, vibration energy is effectively transmitted to deep miscellaneous fill through the resonance amplification principle, and a miscellaneous fill resonance dense area is formed; and a solidifiable slurry and miscellaneous fill mixing area playing an auxiliary reinforcing role is added, the vibrating hammer drives the vibrating rod to freely fall to compact a compaction area formed by loose soil bodies in vibrating holes, and the miscellaneous fill foundation is jointly reinforced. The defects that a traditional method for reinforcing the deep miscellaneous fill is poor in effect, low in economic benefit, complex in construction technology and the like are effectively overcome.

The invention discloses a ratchet wheel type oxygen lance slag scraper which can improve a slag scraping effect and prolong service life. The ratchet wheel type oxygen lance slag scarper comprises two symmetrically arranged cylinders, two symmetrically arranged bearing block groups, two symmetrically arranged slag scraping ratchet wheel groups, wherein the cylinders are hinged to a cylinder support, a connecting shaft is arranged in each of the two bearing block groups, each slag scraper ratchet wheel group at least comprises two slag scraper ratchet wheels, and a pin shaft is in clearance fit with the slag scraping ratchet wheels. The ratchet wheel type oxygen lance slag scraper has the advantages that multiple slag scraper ratchet wheels are arranged, so that multiple force bearing points are formed on steel slag on the outer wall of an oxygen lance, and therefore the steel slag can be crushed very well, the slag scraping effect is improved; in addition, since the slag scraper ratchet wheels can rotate, the slag scraper ratchet wheels rotate when too much steel slag is adhered, fracture of a steel wire rope or damage of equipment can be avoided, and service lives of related equipment such as the ratchet wheel type oxygen lance slag scraper and the oxygen lance are prolonged.

The invention relates to a road de-icing device and de-icing method suitable for a loader, which belongs to the technical field of road de-icing and particularly relates to a detachable de-icing device which is conveniently mounted on the loader. The detachable de-icing device comprises a de-icing mechanism and an ice layer thickness detecting mechanism, the advance speed of the loader and the rotation speed of a milling drum can be automatically adjusted according to the thickness of an ice layer, the de-icing thickness range is large, and the mechanical motion of the ice layer thickness detecting mechanism and the mechanical motion of a limiting device can be automatically controlled by a hydraulic device, thereby realizing intelligent measurement for the road icing thickness. The loader used by the invention is a common operation machine of the road maintenance department, thereby having wide scope of popularization; the loader is used as a power source, thereby avoiding the problem of relatively high cost of a vehicle body of a dedicated de-icing vehicle. Meanwhile, an icebreaking device can be separated from the loader, so that other applications of the loader are not influenced outside the operational period.

The invention provides an oxygen lance slag scraper. The oxygen lance slag scraper comprises a fixed frame which is symmetrically provided with a driving shaft and a driven shaft; the two ends of thedriving shaft are provided with a first connection rod and a second connection rod which rotate around the axis of the driving shaft; one end of the driven shaft is provided with a third connection rod which rotates around the axis of the driven shaft; the driving shaft is connected with a driving mechanism through the first connection rod, and the second connection rod is connected with the thirdconnection rod through a connection rod assembly; and the driving shaft and the driven shaft are each provided with a scraper blade assembly, and the two scraper blade assemblies are symmetrically distributed. According to the oxygen lance slag scraper, synchronous starting and stopping of the scraper blade assemblies can be achieved through a plane four-rod mechanism, connection rod operation isstable, the rigidity of the slag scraper is improved, the structural style of the slag scraper is optimized, and the service life of the slag scraper is prolonged; and meanwhile, by arranging a plurality of scraper blades, steel slag on the outer wall of an oxygen lance has a plurality of force bearing points, thus, the steel slag can be crushed more easily, and the slag scraping effect is improved.

The invention belongs to the technical field of amino acid production, and discloses a treatment process of waste bacteria produced during amino acid fermentation. The treatment process comprises the following steps: 1) drying and crushing; 2) performing salt treatment and ultrasonic treatment; 3) hydrolyzing; 4) adsorbing and centrifuging; 5) filtering; 6) evaporating and drying; 7) preparing feed. By the treatment process provided by the invention, a peptide product and a feed product with relatively high purity can be prepared, and waste of a bacterial raw material is avoided.

The invention discloses a copper hydroxide cleaning device. The copper hydroxide cleaning device comprises a conical end socket, a conic-bottomed anchor agitator, a turbine agitator, a cylinder body, a motor, a reduction gearbox, an end cap, a reducing pipe, a connecting pipe and a rotary shaft, wherein the end cap is arranged on the top of the cylinder body, the conical end socket is arranged at the bottom of the cylinder body, the sidewall of the upper portion of the cylinder body is provided with a copper hydroxide pug inlet and a cleaning water inlet, and the bottom of the conical end socket is provided with a discharge port and a sewage draining outlet. The motor and the reduction gearbox are arranged on the upper portion of the end cap. The motor is connected with the rotary shaft extending into the cylinder body through the reduction gearbox. The turbine agitator and the conic-bottomed anchor agitator are sequentially arranged on the rotary shaft from top to bottom. The bottom of the conic-bottomed anchor agitator is attached to the inner wall of the conical end socket. The copper hydroxide cleaning device is used for cleaning copper hydroxide and improving the cleanliness of the copper hydroxide; in addition, other particle flow can be adopted to replace copper hydroxide pug, and corresponding cleaning agents can be adopted, so cleaning of the particle flow can be achieved.

The invention discloses an extraction method for thalli produced in amino acid fermentation, belonging to the technical field of production of amino acids. The extraction method comprises the following steps: step 1) drying and crushing; step 2) salt treatment and ultrasonic treatment; step 3) hydrolysis; and step 4) evaporation and spray granulation. To reduce cost for raw materials, the extraction method does not use expensive enzyme preparations for treatment; and thallus protein powder with comprehensive nutrient composition is prepared, and the thallus protein powder can be used for replacing yeast extract and has better fermentation and culture effect.

The invention relates to a hydraulically-driven multi-dimensional plasma combined drill bit and a well drilling method thereof. The hydraulically-driven multi-dimensional plasma combined drill bit comprises a drill rod, a drill bit body, a plasma turntable gear, a plurality of plasma devices, a mechanical cutting gear and a power generator, a slurry turbine is arranged in the drill rod, and the bottom of the slurry turbine is connected with the power generator; the bottom of a cylinder on the outer edge of the turbine blade is fixedly connected with a turntable switch, the turntable switch is provided with a plurality of discharge switches in the circumferential direction, each discharge switch extends into an annular slide rail, a pair of cables also extends into the annular slide rail, and the end parts of the pair of cables are provided with switch electric brushes; and an upper gear is welded to the lower end of the turntable switch, the lower portion of the upper gear is engaged with two connecting gears, the two connecting gears are coaxially fixed to the plasma turntable gear and the mechanical cutting gear respectively, and the plasma turntable gear and the mechanical cutting gear are exposed out of the bottom of the drill bit body. Mechanical cutting and plasma impact are combined for rock breaking, and the rock breaking speed is increased.

The invention discloses a treatment device for a plastic needle cylinder of a disposable medical syringe, and relates to the technical field of industrial equipment. The treatment device comprises a support, wherein a treatment box is fixedly connected to one surface of the support; a crushing cavity which has a circular hollow structure is formed in the treatment box, and a discharging hole communicating with the crushing cavity is fixedly formed in the bottom surface of the treatment box; a filter cylinder is rotationally connected to one surface of the crushing cavity through a bearing; anouter driving pipe is rotationally connected to the inner wall of the filter cylinder through a bearing; an inner driving rod is rotationally connected to the inner wall of the outer driving pipe through a bearing; and a group of partition seats are fixedly connected to the inner wall of the filter cylinder. According to the treatment device, through the design of a forward cutting knife group, afirst reverse cutting knife group and a second reverse cutting knife group, a traditional single-direction crushing mode is changed into a double-direction crushing mode, and through double-directioncrushing, the shearing force is improved, so that the crushing effect is improved.

The invention belongs to the technical field of ceramic materials, and particularly relates to a preparation method of high-density boron carbide ceramic, which comprises the following steps: S11, carrying out primary slurry preparation on boron carbide, and carrying out ball milling; s12, drying, crushing and sieving the ball-milled powder to obtain boron carbide modified powder; s21, carrying out secondary slurry preparation on the boron carbide modified powder and deionized water, adding a dispersing agent, and carrying out ball milling; s22, adding a sintering aid, a binder and a release agent, and continuing ball milling to obtain slurry; performing spray granulation: sieving the slurry, and performing spray granulation to obtain granulation powder; aging the granulated powder: adding ethanol into the granulated powder, uniformly stirring, adding into a sealed bag, and aging; dry-pressing the granulated powder: uniformly mixing the coarse granulated powder and the fine granulated powder according to a certain proportion, and pressing the mixed powder by using a dry press to obtain a biscuit; and high-temperature sintering: carrying out one-time debonding and sintering on the biscuit to obtain the boron carbide ceramic.