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Kunshan Pinhong EPT Co.,Ltd
Kunshan Pinhong EPT Co.,Ltd
Add : (Qiandeng Yuanchuang Base) No. 125, Jinxing South Road, Qiandeng Town, Kunshan, Jiangsu, China
Tel : （0086）15995617314
Fax : +86-512-50130524
E-mail :lvfang@ksphxs.com
Water is the source of life, and the water that is used most frequently in daily life enters the sewer and enters a series of clean cycle processes. It is simply called sewage treatment equipment. Silicone rubber aeration pipes are used as aerators. The membrane sleeve is its core component, which can effectively improve the oxygen transmission efficiency and increase the oxygen amount of aerobic aeration. The product itself is made of a slightly special type of silicone rubber raw material. It has the characteristics of long life, high product safety performance, strong tear resistance, slight corrosion resistance, etc., especially in the field of food and drinking water, a silicone rubber aeration tube must be used as the membrane sleeve, which requires its environmental protection and non-volatile characteristics And it needs to reach FDA (food grade) for the strict drinking water treatment equipment. Under these circumstances, silicone rubber can fully exert its advantages. It can run in the water for a long time without producing any toxic and harmful substances or gases, and it is not easy to cause scale, etc. , And EPDM aeration pipes cannot meet this requirement, so they are more suitable for the following industrial sewage treatment aerators, and most EPDM aeration pipes cannot pass FDA, ROHS and other testing requirements.
In order to improve the efficiency of sewage treatment, silicone rubber aeration pipes tend to increase the inner and outer diameters of the membrane sleeves, and some even exceed 100mm in size and the wall thickness is often between 2~4mm and the outer diameter is between 104~108mm. The effect is to increase the outer diameter of the membrane to increase the capacity of the pipeline, thereby increasing the overall operating speed and increasing the efficiency of sewage treatment. After the size of the silicone rubber aeration pipe increases to a certain upper limit, it will be difficult for manufacturers of silicone pipes. It is very challenging. Now the mainstream extruders in the market produce sizes below 100mm and the silicone rubber aeration pipes are all above 100mm, which conflicts with the industry, so I want to produce silicone extrusion for aeration pipes. The manufacturer must change the equipment to use a large-diameter extruder. In addition, in the production of large-diameter silicone rubber aeration pipes, a series of conditions such as product eccentricity and uneven wall thickness will be encountered, because the wall thickness is thin and the product size is large. Alternative situations will increase the difficulty of producing aeration pipes. Once the wall thicknesses on the left and right sides are uneven, cutting the "U"-shaped groove in the silicone rubber aeration pipe will show the disadvantages, and the thinner wall will be aerobic during work. The repeated work of the suction and expansion force of the aeration can easily cause the product to be torn and cause damage to the product. Expensive, if you continue to increase the wall thickness, it means that the unit price of the product will continue to increase, which is unacceptable by the customer.) Therefore, the silicone extruder is required to strictly control the wall thickness and the positive and negative tolerances of the size during the production of silicone rubber aeration pipes. .
As for the role of the silicone rubber aeration tube, the aeration efficiency will be determined by the number of "holes" on the surface of the product. The more U-shaped holes are punched on the surface of 100mm in diameter, the higher the requirements for the tearing strength of the silicone rubber. As the quantity increases, the tear strength of the silica gel will increase. For reasonable use, it is recommended not to punch too many holes. Although the efficiency is improved, the product life will be reduced. This is proportional to the cutting method. In addition, the cutting method will also affect the life of the aeration tube. The cutting effect will be better with a precision knife die, because the aeration tube is easy to be torn during work and the way to start the tear is to start from the incision end, so the precision of the incision has less burrs, and the tearing will not start. Service life, the use of rough mold cutting will result in more burrs at the incision, and the silicone will expand as soon as the force is applied. These small burrs will be infinitely enlarged. Fracture, these detailed operations are often the most effective in the work, which can indicate that the silicone rubber aeration pipe plays a role in improving aerobic aeration and improving the efficiency of oxygen transfer in sewage treatment.