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 relates to a single-component polyurethane material for preparing waterproof glue, which is prepared from the following raw materials in parts by weight: 34-80 parts of polyether polyol, 1-4.5 parts of catalyst, 10-22 parts of solvent and 15-150 parts of polyisocyanate. The invention also provides a preparation method of the single-component polyurethane material for preparing waterproof glue. The polyurethane material provided by the invention overcomes the shortcomings of high viscosity, low transparency and no beauty after construction of traditional polyurethane waterproof paint; the prepared product has remarkably strong water pressure resistance and can sustain strong water pressure for a long time, and has pretty long-term self-repair waterproof ability and can guarantee the long-time waterproof ability of the repaired surface; and the preparation method provided by the invention is simple and easy to implement.

The invention discloses an environment-friendly shield tail sealing grease, a preparation method and application thereof, wherein the environment-friendly shield tail sealing grease comprises the following components in parts by mass: 5 to 20 parts of base oil, 15 to 30 parts of viscosity index improver, 10 to 25 parts of lubricant, 4 to 10 parts of natural degradable fiber, 35 to 50 parts of filler particle material and 0.5 to 3 parts of synthetic macromolecule. By controlling the kneading temperature and time, the prepared environment-friendly shield tail sealing grease is used for the shield tail sealing of a shield tunneling machine in the tunnel engineering; and the sealing grease has the advantages of strong water pressure sealing resistance, excellent pumping performance, strong adhesion, good lubricity, stable performance, no corrosion, oxidization resistance, low construction cost, environment protection and facilitation of preparation technique. The water pressure sealing resistance of the product is about 1.5 times of that of the like products at home and abroad, and the pumping performance of the product is 2-3 times of that of the like products at home, so that the blockage of grease injection pipes can be largely reduced, and the working efficiency of the shield tunneling machine in the tunnel engineering is improved.

The invention discloses a detachable movable flood gate which is composed of a detachable gate frame, an inclined support, a horizontal support and movable gate plates. The detachable gate frame is formed by welding two rectangular steel pipes through a straight plate, and a handle is arranged on the detachable gate frame. The inclined support is a rectangular steel pipe, and a handle is arranged on the inclined support. The horizontal support is formed by welding a rectangular steel pipe to two lugs and connected with the inclined support and a lead screw assembly below the inclined support, and a handle is arranged on the horizontal support. The detachable gate frame, the inclined support and the horizontal support are connected through three hinge points and are easy to detach, and all the parts are made of stainless steel. The at least one movable gate plate is arranged in the middle of the detachable gate frame and provided with a handle, thereby being convenient to dismount and mount. In addition, a fixed gate frame and a base are arranged. The detachable movable flood gate is suitable for serving as a water cut-off gate, a flood gate and an isolation retaining wall, saves the occupied land of a building, and has the advantages of being complete in structure, movable, high in water pressure resistance capacity, light in weight, convenient to use, rapid to install, convenient to dismount and mount, reusable, and convenient to convey and store.

The invention discloses an underwater drilling fast blockage air bag, comprising an air bag body made of rubber; a cylindrical bulge is arranged at the top of the air bag body; an air inlet / outlet is formed in the outer wall of the cylindrical bulge; the air inlet / outlet is communicated with the inner cavity of the air bag body by a channel arranged in the cylindrical bulge; an air guide pipe is arranged at the air inlet / outlet, and the other end of the air guide pipe is provided with a control valve; a connection ring is sleeved on the air bag body; the connection ring is positioned at the upper part of the air bag body; a plurality of connection ropes are uniformly distributed along the circumferential direction of the connection ring; a falling weight is arranged at the tail end of each connection rope. The underwater drilling fast blockage air bag is good in blockage effect, can block an underwater geological drilled hole with failure in very short time, and the implementation method is simple and feasible.

The invention discloses an adhesive for water pipes and a preparation method thereof. The preparation method includes the steps that after acacia gum, sodium alga acid, phenolic resin, alkyd resin and polyvinyl chloride are mixed and stirred, a basic mixed solution M is formed; after the basic mixed solution M, white carbon black, an emulsifying agent and a stabilizer are mixed, the adhesive for the water pipes is obtained. By the adoption of the adhesive for the water pipes and the preparation method thereof, the problems are solved that when a current adhesive is adopted to connect adjacent plastic pipes, the needed curing time is relatively long, and besides, it is difficult for glued pipelines to meet the requirements for high-pressure pipelines in the aspect of bearing water pressure.

The invention relates to a simple durable shower nozzle used in a construction site bathroom. The simple durable shower nozzle used in the construction site bathroom comprises a choke plug with a hole, a first connecting casing, a reducer pipe, a second connecting casing and an internal thread joint, wherein an open end of the choke plug with the hole is connected to a large end of the reducer pipe through the first connecting casing, a small end of the reducer pipe is connected to one end of the internal thread joint through a second connecting casing, the other end of the internal thread joint is provided with an internal thread and can be connected with an external water pipe, and all parts of the shower nozzle are made of PPR (polypropylene random) materials and are sequentially connected by using a hot fusion method. The structure of the simple durable shower nozzle used in the construction site bathroom has the following advantages and beneficial effects: the source of used materials is wide, the cost is low, the manufacturing process is simple, the integrity is good, the shower nozzle is not easily damaged by people, the water pressure resistance is strong, the durability is high and the shower nozzle is very suitable for use in the construction site room.

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 relates to a combined lining structure of corrugated steel plate and steel truss for tunnels, which is suitable for underground tunnel engineering constructed by drilling and blasting method and similar construction methods. The corrugated steel truss, the corrugated steel plate initial lining is assembled and formed by a plurality of prefabricated corrugated steel plates in the circumferential and longitudinal directions through longitudinal joints and circumferential joints respectively, and the corrugated steel plates are respectively at the longitudinal joints and the circumferential joints. Steel plate grooves are provided, and waterproof sealing is realized by filling the space formed by the steel plate grooves of adjacent corrugated steel plates. Compared with the prior art, the invention has the advantages of simple form, high precision, high rigidity, The single block has the advantages of light weight, suitable for intelligent construction of tunnel engineering, strong self-waterproof ability and good durability.

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.