Jinan Braided hose Also called rubber hose for sand blasting. It is suitable for air pressure sand blasting of metal surface for rust removal, hemp removal, and sand blasting rubber hose for wet sand blasting and dry sand blasting in engineering construction. It is suitable for air pressure sand blasting of metal surface for rust removal, hemp removal, and sand blasting rubber hose for wet sand blasting and dry sand blasting in engineering construction. The common application fields are shipbuilding, machining, spraying industry, etc. Appearance of abrasion resistant sand blasting rubber hose: 1. Light abrasion resistant sand blasting rubber hose consists of black, yellowish or transparent abrasion resistant rubber inner layer, central fabric or cord reinforcement layer, medium rubber layer and outer rubber layer; 2. Heavy abrasion resistant rubber hose consists of black, yellowish or transparent abrasion resistant rubber inner layer, cloth clip or cord reinforcement layer, steel wire framework reinforcement layer, medium rubber layer Composition of outer rubber layer 3. The steel wire braided wear-resistant sandblasting hose is composed of black, yellowish or transparent wear-resistant rubber inner layer, single-layer or multi-layer steel wire braided reinforcement layer, medium rubber layer and outer rubber layer. Purpose Abrasion resistant sand blasting hose is a kind of material conveying pipe, which is mainly used for conveying solids containing particles such as particles, gravel, cement, quicksand, mud, gypsum, etc. It is suitable for various tunnel projects, tunnels, caverns and other engineering operations. The general working pressure is less than 12 bar, and the higher bursting pressure can reach 36 bar. Sometimes the vacuum rich negative pressure parameter is 0.8 bar 0.9 bar. Braided hose Where can I find it? Hydraulic requirements 1. The maximum working pressure of wear-resistant sand blasting hose is 0.63MPa. 2. The hose shall be free from water seepage, local bulge, expansion and other abnormalities when conducting hydraulic test under twice the working pressure. Keep the pressure of anti-static hose for 1min, and the length change shall not exceed ± 0.8%, the outer diameter change shall not exceed ± 10%, and the torsion per meter shall not exceed 60 º. 3. The bursting pressure of the hose shall not be less than 4 times of the working pressure.
Jinan Braided hose Prevention of vibration and noise during installation: the prevention of vibration and noise during installation is a key point in the installation process. The prevention of vibration and noise of spiral air duct during installation is mainly from the following aspects: 1. The fan and spiral air duct are connected by hose, and the hose at the suction inlet of the fan shall be installed with appropriate tightness, Avoid noise and vibration caused by reducing the area of air inlet and outlet due to loose soft connection. 2. The spiral air duct shall be made, installed and connected with the components. The connection shall be tight to reduce the gap and avoid air leakage noise. 3 In order to prevent the spiral air duct from vibration, fixed supports shall be installed at the turning of each system spiral air duct and at the connection with the ventilator and the air outlet for shock absorption. 4 The vibration damping device shall be set according to the design requirements or construction specifications during fan installation. Air leakage rate test of spiral air duct After the installation of spiral air duct, air leakage rate test is required. According to the specifications, the air leakage rate test of spiral air duct adopts the combination of light leakage legality and quantitative air leakage rate test. The light leakage method is suitable for the tightness test of medium and low pressure systems; The air leakage rate test is suitable for sampling inspection of medium pressure system and full detection of high pressure system. Light leak detection of spiral air duct Light leak detection is a qualitative method to detect the tightness of the spiral air duct of the system by using the strong penetration of light to holes. The test method is to use a bulb with protective cover whose voltage is not higher than 36V and power is more than 100W in the spiral air duct on a certain length of spiral air duct in dark environment, and slowly move from one end of the spiral air duct to the other end. If light can be observed outside the spiral air duct during the test, it indicates that there is a leak point in the spiral air duct, and repair the leak point of the spiral air duct. Braided hose Where can I find it? The light leak detection method of the low-pressure system adopts the method of subsection detection and summary analysis. The spiral air duct of the tested system is not allowed to have multiple obvious light leaks in the form of slits. The spiral air duct of the low-pressure system has no more than two light leak points every 10 meters, and the average joint of 100 meters is no more than 16; For every 10 joints of spiral air duct of medium pressure system, no more than 1 light leak point, and no more than 8 joints per 100 meters are qualified.
Ventilation pipes on ships are generally made of galvanized iron sheet high quality Braided hose This kind of air duct is generally made by hand, and the production efficiency is low. Later, circular spiral air ducts made by machines greatly improved the production efficiency of air ducts and the quality of air ducts, which were widely used on civilian ships. However, for military ships with very strict height restrictions, circular air ducts obviously occupied more height than rectangular air ducts, which limited the promotion and use of circular spiral air ducts on ships. In the 1980s, 708 Research Institute, the Military Representative Office of Navy Garrison 426 Factory and Dalian Bohai Air Conditioning Auxiliary Factory jointly successfully trial produced the flat spiral air duct. It combines the advantages of the circular spiral air duct and the rectangular air duct. It is the third generation of air duct for ships, which is welcomed by the ship design department and has achieved good results after many ship use. The structure of the spiral air duct is the same as the round spiral air duct. It is also formed by rolling galvanized iron sheet on a special pipe coiler. Therefore, it can be produced mechanically, and the inner surface of the air duct is flat and smooth. The utilization rate of materials is also high. The thickness of galvanized iron sheet is generally 0.6mm. Although it is 0.75~slightly thinner than the commonly used rectangular air duct iron sheet, its rigidity is higher than that of rectangular air duct due to the reinforcement effect of spiral undercut. There are two types of flat spiral air duct: non adiabatic and pre adiabatic. Non adiabatic type is applicable to air conditioning ducts with simple mechanical ventilation, natural ventilation and external insulation. Jinan Braided hose There are two types, one is air layer insulation, that is, there is 12.5~thick air layer between the inner pipe and the outer pipe. The other is that the inner and outer pipes are filled with thermal insulation materials rock wool or ultra-fine glass wool to become good thermal insulation air conditioning ducts.
high quality Braided hose Or PVC steel wire spiral reinforced pipe. The commodity is made of high-quality PVC plastic raw materials. PVC steel wire reinforced pipe is also a PVC steel wire reinforced hose that uses steel wire reinforcement. The embedded spiral steel wire is used as the reinforcement layer, so the product has both rigidity and flexibility, that is, it has both satisfying mechanical properties and rigidity, and excellent flexibility. The reinforced pipe of latex fiber is PVC hose embedded with steel wire framework. The inner and outer tube walls are clear, lubricated, free of bubbles, and the fluid transportation is clearly visible. Silicone fiber tube is resistant to low concentration of acid and alkali, high elasticity, not easy to age, and has a long service life. Resistant to high pressure and can be kept intact under high pressure and vacuum. PVC steel wire pipe is made of new PVC reinforced materials, and has made great progress in compressive strength and hardness. The main production method of silica gel steel wire pipe is multiple production method. The main types of steel wire pipe in shopping malls include high pressure steel wire pipe, low pressure steel wire pipe, steel wire skeleton pipe and Tongming steel wire pipe. The application methods are different in different environments. The new PVC steel wire pipe is the most widely used commodity today. Braided hose Where can I find it? After use, it will not be the same as the metal pipe, which is easy to deform and leak. What advantages does the PVC fiber reinforced pipe have.
