1 Drainage with the same floor Drainage of indoor vertical pipe is a novel design and construction of the installation process is completed in the reinforced concrete floor, the body will be flat thin horizontal drain and pipe network, the level of access directly into the leveling layer tube. Toilet after the use of drainage, or the submersible tank hidden in the pipe partition for the convenience of pipe network maintenance, set in the shower with a waterproof access door master bathroom, bathtub drain pipe network seal enough reasonable arrangements , Should be raised to the bottom of the bathtub leveling above. Leveling level, only 55mm higher than the traditional floor. Not only solve the traditional floor drain pipe drip, Qing Tong affect the environmental health of neighbors, but also save the investment than the use of caisson pipe. Replacement equipment and pipe network maintenance and caisson tube way, the former light, the latter time-consuming and laborious. Rotor pump Castel red wine 2 Discussion with the norms The development of the same level of drainage is not the difficulty of technology, but the traditional concept. From the recent "Building Water Supply and Drainage Design Code" (GB50015-2003) (hereinafter referred to as "the new code") Article 4.5.9 you can experience the development of new technologies will encounter many difficulties and obstacles. "New Code" 41519 provides: the depth of the drain seal, is based on the provisions of foreign norms. 50mm water seal depth is to determine the gravitational flow drainage system, the diameter of the vent pipe and drainage pipe diameter basis. In some areas, attempts to add suction valves to reduce the depth of the water seal are not appropriate. A suction valve only balances the negative pressure, but can not eliminate the positive pressure fluctuations. The second valve flap valve aging, loss of function caused by indoor environmental pollution. The third floor drain to reduce the depth of the seal is bound to reduce the water seal water volume, easy to evaporate dry. Slightly read the literature will recognize that the suction valve to eliminate negative pressure, home siphon loss near zero. Positive pressure without having to rely on the valve to eliminate, but by "double" structure principle, the use of pipe network to promote the increase of water seal. Suction valve valve aging problem is the most critical part of technological breakthroughs, the use of wear-resistant, oil-resistant, dense silicone rubber plus anti-aging agent, improve technical performance, the aging period of 8 to 10 years, replacement than home replacement Bulbs are also easy. Through the following calculations you can understand, regardless of dynamic or static conditions, bell-type leakage seal safety than the micro-loss of the water seal protection leakage worse. 3 Comparison (1) bell-type floor drain seal dynamic calculation. It is known that the static water seal has a depth of H0 = 5cm and a dynamic water seal H1 = 3cm. ①The outer ring water seal evaporation area F1 = Fa-Fb = 102-60.8 = 41.2cm2 Where: Fa = 0.785 × 11.42 = 102cm2 Fb = 0.785 × 8.82 = 60.8cm2 ② inner ring water seal replenishment area F2 = Fc-Fd = 52.78-25.5 = 27.28cm2 Where: Fc = 0.785 × 8.22 = 52.78cm2 Fd = 0.785 × 5.72 = 25.5cm2 ③ water seal recovery after loss Height calculation of the inner ring pumping 3cm water volume ω within = H1 × F2 = 3 × 27.28 = 81.84cm3 water seal recovery when the inner ring is reset H3 = ω / (F2 + F1) = 81.84 / (27.28 + 41.2) = 1.2 cm water seal back height H4 = H2 + H3 = 2 +1.2 = 3.2cm ④ floor drain can be effective evaporation of water ω = H4 (F1 + F2) = 3.2 × 68.48 = 219cm3 ⑤ ω into the allowable evaporation depth H5 = ω / F1 = 219 / 41.2 = 5.3cm (2) Water seal dynamic calculation of multiplied protection type floor drain. Known: static water seal depth H0 = 2.5cm, after the dynamic pumping seal to ensure that the height H Paul ≥ 2.3cm ①design hole diameter D = 3.9cm, when the pore water evaporation area. F1 = 12cm2 ② design surface area of ​​the weir water: F2 = F1 + 2.5F1 = 12 +30 = 42cm2 ③ floor drain available effective evaporation of water: ω = 2.3 × 42 = 96.6cm3 ④ conversion of X into the allowable evaporation depth: H = ω / F1 = 96.6 / 12 = 8.05cm (3) Bell-type floor drain seal static calculation. ①Static water seal height: H0 = 5cm ② Floor drain available for replenishment: ω = 5 (F1 + F2) = 342.4cm3 ③ Convert X to allowable evaporation depth: H = ω / F1 = 8.3cm (4) Water Seal Double Increasing Protective Leakage Seal Static Calculation. ①static water seal height: H0 = 2.5cm ② floor drain available for replenishment: ω = H (F1 + F2) = 105cm3 ③ X converted into evaporation allowed depth: H = ω / F1 = 8.75cm 4 Conclusion The above calculation That bell-type floor drain in terms of static or dynamic aspects, there is no advantage. Because the latter design is a low water seal as the guiding ideology, deliberately with less evaporation loss and high recovery of access to high performance, high-quality suction valve located in the hidden place, to better ensure its unique effect. Floor drain to take water seal protection, the concept should be updated. More Keywords Search: Valve
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