31results about How to "Good for long run" patented technology

The invention belongs to the technical field of cutting equipment, and provides a door and window aluminum profile cutting device which comprises a base, a lifting mechanism, a saw cutting mechanism and a pressing mechanism, the top face of the base is provided with a containing groove with the same width as the aluminum profile and a first cutting seam perpendicularly intersecting with the containing groove, and the lifting mechanism is connected to the upper portion of the base and provided with a lifting table; the saw cutting mechanism is connected with the lifting table and provided with a saw blade right opposite to the first cutting seam, and the pressing mechanisms are symmetrically arranged on the two sides of the saw blade. The pressing mechanism comprises a spring and a pressing plate, one end of the spring is connected with the lifting table, and the other end of the spring is connected with the pressing plate. The pressing plate is located above the containing groove and below the saw blade. The arranged pressing mechanism and the saw cutting mechanism act synchronously through the lifting mechanism, aluminum profiles to be cut can be pressed and loosened before and after cutting, assembly line work is facilitated, and the cutting efficiency is improved; and during cutting, the aluminum profile is pressed into the containing groove through the reset force of the spring, and the stability in the cutting process is improved.

The invention relates to a radio power generation device, and discloses a graphene / single atomic layer GaS / gallium arsenide wireless generator. A layer of single atomic layer GaS is formed on a gallium arsenide substrate passivated by ammonium sulfide, and then attached A layer of graphene, with a first electrode and a side electrode, direct contact between the graphene and the single atomic layer gallium sulfide surface of gallium arsenide to form a heterojunction; Gallium contacts form a Schottky junction and create a Schottky barrier that collects radio frequency waves (sub-6G) emitted by the source. The quantum nature of the radio frequency waves excites hot electrons in the graphene and tunnels them The process forms an electric current. The invention directly converts external radio frequency waves into DC power, and can provide power to electronic devices such as wearable devices and sensors anytime and anywhere. Compared with traditional wireless charging equipment, the generator is more flexible, has higher efficiency, and has a simpler device structure.

The invention belongs to the technical field of sewage treatment, and particularly relates to an artificial wetland system for treating a black and odorous water body and an operation method of the artificial wetland system. The artificial wetland system comprises a water inlet area, a water purifying area, a water outlet area, an aeration system and a sampling openingport; the water inlet area isarranged at the front end of the water purifying area; a water inlet is designed in the outer side of the water inlet area, and small holes are evenly distributed in the inner side of the water inletarea; the water purifying area is sequentially filled with a first-layer matrix, a second-layer matrix, a third-layer matrix, a fourth-layer matrix and a soil layer from bottom to top; the aeration system is mounted at the bottom of the front end of the water purifying area; the water outlet area is arranged at the rear end of the water purifying area; a water outlet is formed in the outer side of the water outlet area, and the water outlet and the water inlet keep the relative height difference; and the height of the water inlet is greater than the maximum height of the soil layer, the wateroutlet is parallel to the height of the fourth-layer matrix in height. The artificial wetland system conducts aeration for eight hours every day, the gas-water ratio is 10:1, and the hydraulic retention time is 2 d. According to the artificial wetland system, the purification effect on pollutants in the black and odorous water body is improved obviously, the transparency is improved well, and thepungent smell is relieved well.

The invention discloses a method for producing vitamin C by elec-trodialysis with a bipolar membrane. In the method, the elec-trodialysis with the bipolar membrane is applied to the generation of ascorbic acid in the vitamin C production process. The method comprises the following steps of: a, arranging a module between a pair of electrodes; b, pumping electrolyte into an anode chamber and a cathode chamber, pumping sodium ascorbate into a conversion chamber, and pumping gulonic acid methyl ester into a hydrolysis chamber for circulation; c, applying DC between the anode and the cathode; d, timely removing products according to the change of materials in the hydrolysis chamber, and separating the products to obtain the sodium ascorbate; and e, according to the change of the PH value in the conversion chamber, removing the products of the conversion chamber, and separating the products to obtain the vitamin C. In the method, a byproduct alkali generated in the elec-trodialysis process is fully utilized to complete hydrolyzing the gulonic acid methyl ester, a catalyst in the hydrolysis process is saved, the pH value of the alkali chamber is also reduced, and the service life of the system is prolonged.