Cast iron pipe construction of drainage system with the old socket all advantages of cast iron pipes and plastic pipes, using this kind of pipe fittings, saves the project investment, and dealt with the disadvantage of the pipe, possess high compressive strength, corrosion resistance, low noise, the characteristics of the seismic grade fire security, large level considering the application effect of regulation, make interior space design layout profits russsian, received a good social economic benefits and economic benefits. Then look at the building drainage system cast iron pipe installation common problems and prevention!
1, the drainage pipe parts do not flow
At the bend and tee, no downstream parts are selected, which increases the frictional resistance of running water. Or, the backflow of saliva from the two drainage channels of the horizontal drainage pipe will converge at the three channels between several outlets, and discharge from the side end socket connection of the three channels. Its disadvantages are not only unsatisfactory water flow, but also the unscientific inclination of the pipeline, which is very easy to block. It is advisable to change the practice of this kind of "top edge T" to bend the pipe and connect the tee (whether to change it to Y tee or TY tee), so as to prevent the drainage of different directions from being orthogonal and meeting on the plane.
2, flexible connection cast iron pipe connector does not leave a gap
The machining process requires that there should be about 10mm space in the center of the socket, which is easy to be telescopic. In practice, the socket will be heavy due to the neglect of this point. Be sure to mark in advance and leave space.
3. Floor drain problem
The application of exhaust valve height to width ratio is less than 50mm floor drain easy to lead to drying and blocking, lack of deodorization. Should choose pass goods, in order to further rely on reliable, appropriate in the floor drain under the water storage curve.
Bell-jar floor drain is used too much in public washrooms, large kitchens and dishwashing bowls. This kind of site residue, very easy to block, often need to clean. Propose that the public washrooms should be equipped with a gassanplus water trap; The great kitchen drain, gagesham; Canteen washing trough and theme activity grid slag, do water trap and odor and set up slag trap equipment; Shower room, dining room kitchen should choose the net type floor drain; There is no floor drain in the dining room kitchen.
Floor drain installation is too high, harm drainage function; Installation is too low, harm the road surface appearance generous. Before installing the water bearing part of the drainage pipe, the floor drain specifications and the thickness of the pavement decoration design should be accurately understood, and the effective design elevation of the drainage socket connection should be calculated.
4. Quality problems of pipeline connection products
The pipeline laser cutting is not good, the wound is not even, there are inclined, convex and concave and burr. Should press technical specification of processing craft, laser is cut again after straightening water conduit first, big water conduit should delimit laser is cut line. After laser cutting to eliminate the burr, the nominal diameter due to extrusion molding hours to do cutting and grinding solution.
Poor thread buckles, crooked, disorderly or broken wire; Wire fastening is too tight, too loose, damage the connection is tight; After the connection, the thread is too little, so that there is no tightening space when water seepage. This kind of incorrect must be corrected according to the actual operation of the processing process.
5. Problems of ded casing and steel parts
Concrete beam, wall, board ded bushing and steel parts are not accurate, not good for pipeline shuttle and support installation. Should be calculated in advance, in the construction of steel reinforcement will be welded to the casing and steel parts on the main reinforcement of the construction steel, casing pipe with waste paper or loess, to avoid concrete injection; When filling concrete, it should be monitored by a professional to prevent the casing from moving. The upper opening of the concrete floor through the casing shall be 30-50mm higher than the wooden floor surface to ensure that the surface water after the floor decoration is not injected into the casing.
6, plastic hose and cast iron pipe interoperability problem
When plastic hose and cast iron pipe are interchangeable, they should be connected with a transfer connector.
