Retrofit of Disc Vacuum Filter Xu Canhong Guangzhou Cement Co., Ltd. Our 6 kiln filtration system uses a 65160 disc vacuum filter. The principle is that with the help of vacuum pumping, the slurry forms a cake of solid particles on the filter cloth, and the water is discharged through the filter cake and the filter cloth to achieve the purpose of solid-liquid separation. The cake on the filter plate enters the drying zone. After taking off most of the water, it enters the blow-off area and is blown off by the compressed air generated by the Roots blower. The remainder is removed by a scraper and the cycle is completed. The device has been used since 1996. Overall it is ideal. However, in order to meet the increase in kiln output, we have continued to explore and improve the equipment.
1 Solve the filter string wind Leakage air filter distribution head and distribution board wear and tear for a long time can cause string wind. Leaky air, worn and lathered several times with a lathe. Distribution heads and distribution boards are also scrapped.
Later, I stuck on the head of the distribution of rare earth nodular cast iron 06003 liner known as the static block, the use of ductile iron material is mainly considered its relative wear and lubrication to protect the dispensing head. Newly installed ductile iron liners have been improved in the following aspects. 0 They are fastened to the distributor head using countersunk hexagon socket head bolts and can be replaced after erosion.
Avoid the occurrence of string wind leakage due to worn heads.
The sector angle of the filter zone of the liner was increased from the original 91 to 0, and the transition zone was reduced from 80 to 6 to achieve proper suction in advance so that the thickness of the adsorbed slurry was increased.
3 Drill holes in the transition zone of the transition zone 6. When the cake is blown down, it can rely on the negative pressure to suck the bulging filter cloth to avoid the blanking blade scraping the cloth.
2 Solve the connection between fan plate and hollow shaft The leakage fan plate and hollow shaft are connected by aprons. The interface between the fan-shaped plate and the hollow shaft is seriously rusted due to long-term water immersion, resulting in a non-smooth contact surface between the apron and the apron, easy air leakage and easy damage to the apron. The fan-shaped plate interface is changed to stainless steel, and the apron connection is eliminated. The shaft interface is welded to the stainless steel coupling ring, and the two stainless steel rings are sealed with 5 pads. Basically eliminate the air leakage problem.
1 Stainless steel coupling ring 2 Rubber pad 3 Sector plate 4 Bow plate 5 Radial rod screw 6 Filter drum Hollow shaft 7 Sector plate Sliding door opening 4 filters 3 vacuum pumps on 3 filters 2 vacuum pumps 2 anti hair blowers Roots Fans can meet 1 counter-blowing blower Roots blower to meet the 6 kiln production filter system to consume every 17 days water seal device life cycle replacement sleeve 550 yuan 2 bearings with tight set 250 yuan. More than 80 pairs of water distribution rings.
Replace the filter cloth for about 160 months.
6 kiln production filter system to consume machine + 0 father 2 vacuum pump +37, uncle Father 1 Roots blower = 324.5 to 1 yuan dry watt-hour seal life cycle increased to more than 60 days, in terms of annual time, Taiwan The filter saves a total of more than 90,000 yuan = replacement of filter cloth for about one month, with 9 yuan per piece of filter cloth.
Annually need to replace the apron about 960 times to invest in the stainless steel coupling ring filter two years to replace the two filter replacement cost of the distribution board. After the transformation of 1 to use stainless steel blanking scraper, cancel the plastic scraper and guide wheel, relying on simple adjustment of the unilateral bolts.
1 Packing cover 2 Spiral packing 3 Sealing ring 4 Water ring 5 Water seal seat 6 Steel hoop 7 Rubber seal, 8 rings 9 Sleeve 10 Stir shaft 2 Drill holes in the transition area of ​​the distribution plate, when the cake After being blown down, it can rely on the pressure of the staff to suck the bulging filter cloth, avoiding the fan blade device after the blanking blade is transformed.
Scraping like a cloth.
2 solve the leakage of the filter asked the filter shaft are sealed with water, 3.
The seal water distribution ring of this part is easy to wear and cause slurry leakage. The leaked slurry is splashed on the bearings at the shaft end, which intensifies the bearing wear. We have improved the structure of the water seal device. The replaceable shaft sleeve can be installed on the agitator shaft to avoid the shaft and disk. Roots rub against each other and wear sleeves are much cheaper to manufacture than stirrer shafts and less bushing work is required to replace the shaft sleeve. The bad water and water, the type of seal ring is also a corresponding transformation. The life cycle of water seals has been increased from the previous 17 days to more than 60 days.
3 to solve the problem of frequent damage to the filter cloth. In the past, the machine often experienced filter cloth wear and tear. At times, there are more than a dozen places every day. Replacement of the filter cloth is a heavy burden on the job, and it also significantly increases the situation before and after the production of the 4 transformation. After the transformation, the economic benefits are considerable.
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