Centrifugal pump lubrication is mainly to reduce friction friction, reduce wear rate, but also play a cooling, dust, rust and vibration absorption and so on. Do a good job of equipment lubrication is to ensure the normal operation of equipment. Reduce equipment wear and tear, prevent equipment accidents, reduce power consumption, extend the repair cycle and service life of effective measures. Centrifugal pump used in the circulating water system of the furnace is a single-stage single-suction pump. Various technical parameters are as follows: Model IS150-125-250, flow rate 200m3 / h, lift 20m, shaft power 18.5kw, speed 1450r / min. This type of pump roller bearing lubrication is 30 # (winter) or 40 # (summer) mechanical lubrication. Due to the design reasons, the dynamic seal leakage is very serious, which not only causes a great deal of wasted oil, burns out the bearings, but also pollutes the environment, which is not conducive to the safe operation of equipment and civilized production. In the course of several years of work, in order to solve this problem, many minor changes have been made. Equipment structure and bearing lubrication diagram, shown in Figure 1. 1, the course of the transformation of lubrication 1.1 Felt seal instead of a single skeleton oil seal The original bearing seal is sealed with felt, shown in Figure 2. Leakage is very serious, each pump fuel consumption of about 300kg / a, resulting in a large number of oil waste, a thick layer of oil on the ground. In order to change the situation of oil leakage, change the felt seal to the skeleton seal as follows: ①The inner and outer end caps of the bearing box are machined to produce a circular hole of Φ65mm and 12mm deep, which is suitable for placing a hole of 45mm × 60mm × 12mm The skeleton oil seal. ② remove the felt, the skeleton seal gently hit into with a hammer, and the correct installation. Concrete schematic shown in Figure 3. After transformation, the equipment is operating normally, the vibration displacement is about 0.04mm, and the temperature outside the bearing is about 50 ℃. The annual oil consumption of each pump is only about 50kg. Maintains the cleanliness of the pump room, put an end to the bearings, shaft damage due to lack of oil, the operation of the equipment intact. 1.2 single-layer skeleton oil seal into a double-layer oil seal In order to reduce the amount of leakage, according to the bearing housing cover structure, and put forward a transformation program, the bearing housing end hole processing Φ65mm through-hole. The single-layer skeleton oil seal into a double-layer skeleton oil seal, the schematic shown in Figure 4: Test run shows that this method to prevent oil leakage in the short term is very effective. However, continuous operation for 6 months, due to the skeleton oil seal wear will increase the amount of leakage. 2, the defects of the skeleton oil seal The felt seal into a skeleton oil seal, the use of 4a, although the effect is better, but there are obvious shortcomings.
A Towel bar is an easy way to keep your bathroom looking tidy, while helping your towels dry more quickly. Different towel bars can accommodate more towels, whether you're looking for a single or double towel bar. And most towel bars are wall-mounted. You can buy your bathroom towel bar in a range of finishes to match other bathroom accessories, such as chrome towel bars, brushed nickel towel bars, gold towel bars, or even modern matte black towel bars.
Towel Bar,Towel Bar Supporing Chrome,Washroom Towel Bar,Height of Towel Bar
Kaiping Jenor Sanitary Ware Co., Ltd , https://www.sanitaryjenor.com