32results about How to "Strong water pressure resistance" patented technology

The invention discloses a sound production device and electronic equipment, the sound production device comprises a vibration system and a magnetic circuit system, the magnetic circuit system is provided with a magnetic gap, the vibration system comprises: a vibrating diaphragm, wherein the vibrating diaphragm is made of rubber; a composite layer, wherein the center of the vibrating diaphragm andat least part of the composite layer are integrally formed; and a voice coil assembly which is connected to one side, deviating from the vibrating diaphragm, of the composite layer, wherein the voicecoil assembly is movably arranged in the magnetic gap. According to the technical scheme, the connecting effect of the vibrating diaphragm and the dome is guaranteed, the reliability of the loudspeaker is improved, and the quality of the loudspeaker is guaranteed.

The invention provides a preparation method of environment-friendly shield tail fat, which comprises the following steps: 1) mixing base oil, tackifier and pumpability improver, heating to 50°C-100°C, and stirring to make the mixture uniform; 2) Add reinforcing agent, keep warm and stir for 40min-60min; 3) Add filler and lubricant and stir for 90min-180min at 50℃-100℃.

The invention discloses a water-based permeable crystallization type waterproof material. The water-based permeable crystallization type waterproof material comprises the following raw materials in percentages by mass: 18-26% of sodium silicate, 2-12% of a chelating agent, 1-6% of ultra-fine flyash, 0.1-1% of dihydrogen hexahydroxyplatinate, 0.2-1.2% of tetraethylortho silicate (a curing agent) and the balance of water and an auxiliary acceptable in the waterproof material. The chelating agent is bis(fatty alcohol amine) or tri(fatty alcohol amine); and the molecular formula of the sodium silicate is SiO2.nNa2O.H2O, and the value range of n is 2-3. The waterproof material is liquid, has good permeability, can permeate in concrete, and fills fractures of the concrete well.

The invention discloses a high-flow-speed water purifying kettle filter element. The filter element comprises a raw water storage unit, a water inlet unit, a filtering unit, a filter element sealing unit, a filter element cylinder body unit and a water outlet unit, wherein a bulge is arranged at the edge of the lower part of the raw water storage unit and is used for hanging the filter element cylinder body unit to a water purifying kettle, a prominence is arranged in the middle of the upper part of the water inlet unit, and a small hole is formed in the prominence; the water inlet unit is arranged at the bottom of the raw water storage unit; the size of the filter element cylinder body unit is matched with that of the water inlet unit; the filtering unit is arranged in the filter element cylinder body unit; a filter element extruding unit is arranged in the filtering unit; and the water outlet unit is arranged at the lower end of the filter element cylinder body unit. According to the water purifying kettle filter element, the flow speed of purified raw water is increased, the purified water filtering waiting time of a user is shortened, the removal rate of residual chlorine is high, the structure is simple, the dismounting and mounting are convenient, and the hydraulic pressure resistance of the filter element is relatively strong.

Anti-seismic, anti-shock wave and anti-wind and huge wave houses, the inner and outer walls are cylindrical or polygonal columns, and the walls are connected in series through top beams, columns and frames to form larger cylindrical or polygonal columns. The overall real estate housing group. The present invention has a ring structure as a whole, and the rings are connected, and according to the law of ring arch beam resistance to heavy impact, the house of the present invention has multi-directional fracture resistance, so the house has strong earthquake resistance and shock wave resistance in earthquakes; As a floating body, the house can be used both on land and in water, and has a strong ability to resist strong winds and huge waves. Compared with similar earthquake-resistant buildings, the invention can greatly save building materials (such as steel, cement, sand and gravel, etc.), is beneficial to energy saving and emission reduction, and can reduce building construction costs.