1. Traditional water seal floor drain
The problem of this floor drain:
Advantages: it is cheap and widely used in products brought by wool embryo house builders.
Disadvantages: poor self-cleaning ability, easy to block and difficult to clean; Slow drainage speed
2. Eccentric block floor drain with lower flap
Use a sealing gasket, fix one side with a pin, add a lead block, and use the principle of gravity eccentricity to seal. This structure was horizontal at first, and then evolved into vertical and vertical with water seal. During drainage, the gasket is opened under the action of water pressure. After drainage, the gasket is closed under the action of lead block gravity.
The problem of this floor drain:
Advantages: cheap, easy to produce.
Disadvantages: (1) the gasket is a mechanical structure and is not tightly sealed; (2) The pin is easy to be damaged; (3) The flap is easy to jam and does not reset. It can't basically solve the problem of aftertaste.
3. Spring floor drain
Use the spring to stretch the gasket at the lower end of the sealing core to seal. When there is no water or little water in the floor drain, the sealing pad is stretched upward by the spring to close the pipe. The water in the local drain reaches a certain height. When the gravity of the water exceeds the spring force, the spring is pressed downward by the water, and the sealing pad is opened to drain automatically.
The problem of this floor drain:
Advantages: the deodorization effect is good before the spring fails
Disadvantages: (1) the spring is made of boron iron, which is easy to rust after long-term contact with sewage, resulting in weakened elasticity, failure and short service life; (2) The spring is easy to wind hair, which affects the rebound of the gasket; (3) The gasket is a mechanical structure and is not tightly sealed. It needs to be cleaned or replaced frequently, otherwise it won't have odor prevention effect at all.
4. Magnet floor drain
The structure of this floor drain is similar to the spring type, which is sealed by the magnetic force of two magnets. When the water pressure is greater than the magnetic force, the sealing gasket will open downward for drainage, and the drainage will be completed. When the water pressure is less than the magnetic force, the magnet block will be attracted and the sealing gasket will be pulled upward.
The problem of this floor drain:
Advantages: Plastic cores can be processed in different types.
Disadvantages: (1) due to the poor water quality of ground sewage, such as washing articles, brushing the ground and other reasons, some iron impurities will be adsorbed on the magnet, and after a period of time, the impurity layer will cause the sealing gasket to fail to close, which will not play the role of odor prevention; (2) The magnetic force will gradually weaken and disappear, affecting the up and down opening and closing of the gasket, which is easy to fail.
5. Gravity floor drain
There is no need for water seal, spring, magnet and other external forces, and the balance relationship between the gravity of the water flow and the floating ball inside the floor drain is used to automatically open and close the sealing cover plate. This mode is similar to the spring type, only converting the elastic force into buoyancy to drive the mechanical tension.
The problem of this floor drain:
Advantages: the integrated filter screen is not easy to lose.
Disadvantages: (1) there are spiral mechanical parts inside the floor drain core, which will rust or deposit sediment when working in sewage for a long time, preventing the buoyancy ball from moving up and down, affecting drainage, odor prevention and bacteria prevention; (2) The sealing cover plate will also cause loose sealing due to the deposition of hair and sediment, which will affect the odor and bacteria prevention.
6. Silicone floor drain
Seal with two thin pieces of silicone or a silicone bag with an opening at the bottom. When draining, the bottom of the silica gel is washed away by water. After draining, the bottom of the silica gel will automatically fit due to its own elasticity and the opening will automatically fit due to residual moisture, so as to achieve the odor prevention effect.
The problem of this floor drain:
Advantages: silica gel has good aging resistance and elasticity, good odor resistance, and fast drainage.
Disadvantages: silicone is not durable for mechanical opening and closing under normal circumstances.
7. New water sealed floor drain
Water sealed floor drain is a floor drain with long deodorization effect on the market!
The water seal floor drain is a floor drain that uses the clock or casing device in the water storage cavity to form an "n" or "U" water storage bend, and relies on the water seal to isolate the odor and bacteria in the drainage pipe, so as to achieve the odor prevention effect.
The problem of this floor drain:
Advantages: it won't be damaged after long-term use without mechanical principle, and the effect is good.
Disadvantages: the cost of stainless steel core is high.