external cleaning
Gently wipe with a soft cotton cloth, especially the biting part of the cigarette holder. As it is often held with the mouth, be sure to pay attention to hygiene. It is recommended to scald it with hot water before use, then use a tissue to wipe away water droplets or shake dry
Internal cleaning
If it is a core replacement type cigarette nozzle, the internal cleaning is very simple because it relies on the filter element for filtration during use. There is only a small amount of tar on the inner wall of the nozzle that may leak due to loose installation. Simply wipe it lightly with a tissue or cloth to clean it
2. The cleaning of cigarette butts is mainly aimed at cleaning type cigarette butts, as this type of mouthpiece can be repeatedly cleaned and used. The cleaning process plays a crucial role in the use and filtration effect:
It is recommended that users do a simple wiping and cleaning after using half a pack of cigarettes. Generally, it is necessary to clean them when they feel that the smoking is tight during use. When cleaning, they should be pulled out in sections, and it is particularly important to note that any style of mouthpiece should be pulled out in a spiral manner, which has a significant impact on the sealing effect of the protective mouthpiece; After pulling out, wipe and clean the filter holes in sections, and use a needle to clean the small holes;
If you haven’t cleaned it for a long time, you may feel that the tar residue in the cigarette butt has hardened and is difficult to clean. After pulling it out in sections, soak it in warm water of about 50 degrees Celsius, let it soak for about ten minutes, and then wipe it off. You can also soak it in a small amount of detergent. This method of cleaning with water must wait for the moisture to dry naturally before use, otherwise there will be a smell of e-liquid that affects the mood of use
For cigarette butts that require special protection, they are usually wiped and cleaned with alcohol or brandy. However, immediately wiping off the alcohol component after cleaning can make the plastic part of the mouthpiece brittle, so please use with caution
Cleaning method:
Generally, if you smoke more than 10 cigarettes, you need to clean them once.
1. Turn out the filter head (the built-in filter needs to be turned out with a configured key). Directly rotate the exposed filter head by hand.
2. Pull out the inner tube inside the filter head, and you can see a lot of black tar
3. Wipe clean with a tissue, rinse with water, or clean with alcohol; wipe and dry.
4. Check if the two small holes in the inner tube are unobstructed; If there is any blockage caused by tar or other substances, a toothpick or small needle can be inserted to clear it. (Note that if the small hole is blocked, it will be difficult to smoke),
5. Retract the inner tube and complete cleaning; Install it properly and continue using it.
Attention: If the cigarette is not cleaned and left for a long time after smoking, it is easy for tar to form lumps inside (manifested as difficulty or inability to smoke), which increases the difficulty of cleaning (often even after simple cleaning, it is not so smooth). In that case, it is better to soak it in alcohol. First, follow the steps above and then turn off the back cover,. Soak in alcohol for a while. Clean the inner tube and small holes (especially two or four small holes) with a toothpick or thin metal wire, and rinse them clean; This is how it works. If you don’t want to filter, you can also turn off the back cover instead of installing it. This is also possible, but it cannot filter out tar. However, it has a filtering effect because Hai Liu itself has a filtering effect. Traditional Hai Liu cigarette butts do not have a filter element, which was only developed in recent years.
Filter principle explanation
1. Wall effect
 
The wall effect is also known as the Coanda effect or the Coanda effect. It is a phenomenon where gas tends to flow away from its original direction and instead follows a protruding object. When smoke rich in tar flows inside the tar compartment of the cigarette butt, this phenomenon occurs. The widespread application of the wall attachment effect is on aircraft wings, where people use the wall attachment effect to change the air flow velocity and obtain lift by designing wings with different shapes on the front and back sides.
 
2. Small hole jet
 
Small hole jet refers to the phenomenon where a fluid is injected into a stationary environment through a small hole, causing inevitable disturbance to the cross-section, resulting in instability and vortex formation, while continuously moving, deforming, and splitting to produce turbulence. The small hole jet effect of the cigarette nozzle causes the tar rich smoke to drop sharply from a speed of 120 meters per second to almost zero, thus evenly filling the tar compartment and laying a good foundation for the work of wall effect.
 
3. Condensation principle
 
Condensation is the condensation of gases or liquids when they are cooled, such as water vapor turning into water when cooled, and water turning into ice when cooled. The lower the temperature, the faster the condensation rate, and the better the effect. The temperature of unfiltered flue gas generally exceeds 40 ℃, and condensation occurs when it flows into a tar bin that is 10-20 ℃ lower than its own temperature.