30results about How to "Improve utilization efficiency" patented technology

The invention provides an adjustable cambered surface dustproof blackboard. The blackboard comprises a flexible blackboard body, an arc-shaped frame and a fixing frame, wherein the upper portion and the lower portion of the flexible blackboard body are connected with the arc-shaped frame. The blackboard further comprises adjusting devices, the arc-shaped frame is connected with the fixing frame through the adjusting devices, and the arc-shaped frame is made of elastic materials; a left rotating cylinder and a right rotating cylinder are arranged on two side edges of the fixing frame; the flexible blackboard body is twined on the left rotating cylinder and the right rotating cylinder, and a head end of the flexible blackboard body is connected with a tail end of the flexible blackboard body; the blackboard further comprises an anion generator and pole straps, wherein the pole straps are arranged on the fixing frame, and connected with the anion generator; and the blackboard further comprises a rolling roller, and the rolling roller is arranged on the fixing frame, and the surface of the rolling roller is in contact with an arc surface convex part formed by the flexible blackboard body. The distance between the arc-shaped frame and the connecting point of the fixing frame is adjusted through the adjusting devices, then the radian of the arc-shaped frame is adjusted, therefore, different radian can be adjusted according to different ambient light, the light reflection phenomenon is reduced, an electrostatic field is generated between the pole strips, so that the powder is generated when the flexible blackboard body is used, and the powder can be effectively absorbed by the electrostatic field and cannot diffuse to the surrounding environment.

The invention discloses a preparation method of a quaternary ammonium cationic monomer aqueous solution. The preparation method comprises the following steps: after fully mixing a mixture of unsaturated tertiary amine and a polymerization inhibitor with water, continuously feeding the mixture to a tower reactor from the upper part of the tower reactor; and continuously introducing gas halohydrocarbon from the lower part of the tower reactor to the tower reactor, wherein the unsaturated tertiary amine and the gas halohydrocarbon in the tower reactor are in countercurrent contact to react, the reaction temperature is 35-60 DEG C and the reaction time is 3-15 minutes. The preparation method disclosed by the invention realizes continuous production and is short in reaction time, and the conversion ratio of the unsaturated tertiary amine reaches over 99.8%, the content of a byproduct acrylic acid is less than 1000ppm, the content of the byproduct is low, the product yield is high and the product quality is stable.

The invention relates to preparation of nanometer materials and specifically discloses a method for large-scale continuous preparation of nanometer zero-valent metal materials. The method includes thefollowing steps that (1) biomass adsorption particles and a metal salt ion solution make contact in a soaking mode according to the solid-to-liquid ratio of 1:1-50 g/ml, and after filtering, separation and washing, water is added for size mixing to form a suspension state according to the solid-to-liquid ratio of 1:1-50 g/ml, and a material A is obtained; (2) a sodium borohydride aqueous solutionwith the concentration being 0.1-1 mol/L is prepared to serve as a material B; and (3) the material A and the material B are added into an auger type spiral mixer in a mixed mode according to the volume-flow rate ratio of 1:1-5, mixing and reinforcing contact are carried out in the auger type spiral mixer, a reduction reaction is completed, residual reagents are removed by rapidly washing outputmaterials, and the nanometer zero-valent metal loaded composite materials are obtained. By means of the method, the technical problems that nanometer zero-valent metal is prone to air oxidation and solid-liquid separation and washing are difficult in large-scale preparation are solved, and a highly engineered technological approach for large-scale preparation of the nanometer zero-valent metal materials is provided.

The invention belongs to the technical field of high-voltage electrical cabinets, in particular to an energy-saving noise-reduction high-voltage electrical cabinet. The electrical cabinet comprises acabinet body, wherein an adjusting box is mounted at the upper part of the cabinet body; a connecting plate in the horizontal direction is arranged above the adjusting box; one end of the connecting plate is fixedly connected with an obliquely arranged solar cell panel; the lower surface of the connecting plate is fixedly connected with a fixing block; a rotating shaft in the vertical direction iswelded to the lower end face of the fixing block; the bottom end of the rotating shaft is rotationally connected to the outer wall of the top end of the adjusting box; a second gear is fixedly connected to the outer side of the rotating shaft; a driving shaft parallel to the direction of the rotating shaft is arranged on one side of the rotating shaft; the outer side of the driving shaft is fixedly connected with a first gear; and the first gear is meshed with a second gear. The defects in the prior art are overcome, the solar cell panel on the electrical cabinet can rotate according to the illumination condition, solar energy is absorbed at the maximum efficiency, the damping capacity of the electrical cabinet is improved, and the noise of the electrical cabinet is reduced.

The invention discloses weever feed with a low-phosphorus formula. The weever feed is mainly prepared from fish meal, bean pulp, peanut meal, cottonseed meal, rapeseed meal, complex enzyme, phytase, high gluten flour, fish oil, soybean oil, choline chloride, soybean phosphatide oil, vitamin C phosphate, monocalcium phosphate, zeolite powder, vitamin premix, mineral substance premix and sodium alginate. After the low-phosphorus weever feed disclosed by the invention is used, the reduction amplitude of the coefficient of food for breeding weever is large, is 0.93-1.10 and is reduced by 12.70 to 26.19 percent compared with that of commercial feed; the apparent digestibility of phosphorus in the feed is improved by 14.14 to 20.68 percent, the content of total phosphorus in a water body is reduced by 12.93 to 16.44 percent, and the utilization efficiency of phosphorus is improved by 14.14 to 20.68 percent.

The invention relates to a PCB micro-etching processor containing micro-etching liquid and an application method. A body of the processor comprises a reaction cylinder. An electrolytic assembly is arranged in the reaction cylinder. The reaction cylinder comprises an anode connecting cylinder portion and a cathode connecting cylinder portion communicating with the anode connecting cylinder portion.The electrolytic assembly is provided with a cathode plate and an anode plate which correspond to the anode connecting cylinder portion and the cathode connecting cylinder portion correspondingly, wherein the cathode plate is an inert current-conducting plate, and a metal replacement layer is arranged on the surface of the anode plate. When the processor is used, the cathode plate and the anode plate are electrified through a rectifier, copper ions in the waste liquid are replaced to the surface layer of the anode plate, and therefore, the copper ions are recovered.

In the invention, an induction screen release task table is scanned to obtain a congested segment ID to be released, a query is made to obtain a corresponding upstream intersection ID of the segment by using the segment ID, a query is made to obtain an upstream segment ID of the corresponding intersection by using the intersection ID, a query is made to obtain an induction screen D corresponding to the segment ID by using the segment ID, an upstream induction screen is searched based on a congestion event of the segment, and a corresponding induction scheme is released according to the induction screen ID. An intelligent induction system based on a traffic congestion event in the invention obtains urban congested segment information in time by using a big data platform, the congested segment information is released in time by using induction information through the intelligent induction system to reasonably guide the traffic flow, in this way, the congestion of the congested segment can be eased, the smooth and orderly traffic environment for other segment travelers can also be ensured, and the utilization rate of the urban road network is improved.

The invention discloses a coking middling coal coarse grinding and floatation method and belongs to the field of a coal washing and dressing technology. Firstly, granularity of heavy medium middling coal in a coal preparation plant is reduced below 3mm through crushing; then, wet ore grinding is carried out by a ball mill, and granularity of the material is less than 0.5mm after ore grinding; and finally, recovery is conducted by a floatation method. The method provided by the invention is mainly characterized by coarse ore grinding and drug-free floatation. The method has advantages of low energy consumption, simple operation and low investment and operation costs.

The invention relates to a charging method of a lithium ion battery, which belongs to the technical field of battery charging and can be used for computing the value change of the polarizing voltage of the battery by a calculation formula of the polarizing voltage of the battery, wherein the calculation formula is that UP=UO-UOCV-UR=UO-f(SOC)-I*Rd. The polarizing voltage is controlled to be within a certain numerical value range for ensuring that aberration produced on a charging voltage curve is invariant. The corresponding charging current of the battery in different SOC (State of Charge) and the same polarizing voltage during charging is automatically regulated so that the charging speed of the battery is controllable. On the premise of ensuring the service life of the battery, the charging method largely enhances the charging speed of the battery. Simultaneously, the charging time is shortened, thereby enhancing the utilization efficiency of the battery, reducing the quantity of standby battery packs in the replacement mode of the battery and providing conditions for the scale application of electric vehicles.

The invention discloses a brewing technology of semen astragali complanati and radix ginseng vinegar. The semen astragali complanati and radix ginseng vinegar is brewed by taking semen astragali complanati as a main raw material and radix ginseng as a base material through the steps of pre-treating the semen astragali complanati, pre-treating the radix ginseng and mixing, steaming the materials, inoculating, fermenting, carrying out after-ripening, squeezing and filtering, ageing and the like. According to the brewing technology disclosed by the invention, after being subjected to fixation, the semen astragali complanati is subjected to complex enzyme treatment; the astringent taste of the semen astragali complanati can be removed by the fixation so that the mouthfeel and the taste of finished-product vinegar can be improved; the utilization efficiency of the semen astragali complanati can be improved through the complex enzyme treatment; the radix ginseng is used as the base materialso that nutrient substances of the finished-product vinegar are enriched and the finished product has the health-care effects of tonifying the kidney to arrest spontaneous emission, removing liver-fire for improving eyesight and the like.

A computer host is composed of a main board at a back plate of a case body therein, a power supply at the junction of a right side board and the top board of the case body, a heat dissipation fan at the right side board opposite to the power supply, and a controller at the junction of the right side board and the bottom board of the case body. The heat dissipation fan is connected with power supply circuit through the controller. The controller comprises a metal casing, a left power supply wire, a right power supply wire, a left conductive sheet, a right conductive sheet, a left conductive fold, a right conductive fold, a left wax strip, a right wax strip and a middle conductive part. This computer host not only has high heat dissipation efficiency, but also has strong controllability.

The invention discloses a device for efficiently utilizing steam and nitrogen in a cleaning process of sodium sticking equipment. According to the device, an outlet of an electric heating type evaporator communicates with an inlet of a cleaning container, an outlet of a nitrogen supply system communicates with the inlet of the cleaning container, a first hydrogen concentration sensor is installed at an exhaust outlet in the upper portion of the cleaning container, the exhaust outlet in the upper portion of the cleaning container communicates with an inlet of a high-temperature copper oxide bed sequentially through a steam-water separator, a second hydrogen concentration sensor is installed at an outlet of the high-temperature copper oxide bed, and the outlet of the high-temperature copper oxide bed communicates with the cleaning container. According to the device, the steam and the nitrogen can be recycled, and the utilization efficiency of the steam and the nitrogen is improved.