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振动筛的维修保养
[ 时间:2010-09-02 点击:1620 ]


(1)筛机出厂时,激振器内注有润滑油,兼有防腐性能,有效期三个月。存放期超过三个月后,运转20min,还可继续防腐三个月,工作时必须换上清洁润滑油。
    (2)经常保持激振器通气孔畅通(因堵塞易导致漏油)。如果畅通后仍然漏油,就应更换油封。
    (3)轴承正常工作不应超过75℃,新激振器因为有一个跑合过程,故可能温度略高,但经过运转8h以后,温度应稳定下来,如果温度继续过高,应检查油级别、油位油清洁度。
    (4)保证槽内充满润滑脂,灰尘量大场合下工作,应当更加频繁地加注油脂。
    (5)更换V带时,应完全松开电机地脚螺栓,方便地将V带放入带轮槽内,不允许用棍棒或其他物体撬V带,V带张紧力必须适合,带轮必须对正,首次调整张力后,进行48h工作,再重新调整一次。
    (6)激振器与筛箱联接螺栓为高强度螺栓,不允许用普通螺栓代替,必须定期检查紧固情况,最少每月检查一次。其任意一个螺栓松动,也会导致其他螺栓剪断,引起筛机损坏。
    (7)采用环槽铆钉联接地方,允许用高强度螺栓代替,所有接触面或孔,均应没有铁屑、灰、油、锈毛刺。
    (8)采用高强度螺栓、螺母垫圈,必须符合《钢结构用高强度大六角螺栓、大六角螺母、垫圈技术条件》要求。
    (9)为了防止焊接引起内应力,一般情况下不允许现场对筛箱及任何辅助件进行焊接,必须焊接时,应由熟练操作人员进行。建议采用以下步骤。
    a.为防止裂纹延伸,裂纹每一端钻6mm直径孔。
    b.用圆铲子沿裂纹两面铲出坡口。
    c.先预热60℃左右,用3mm直径电焊条(相对应牌号),并防止任何夹渣咬肉现象。
    d.磨平两侧突起焊肉,焊上补强板。
    e.如果需要筛面托架横梁上焊接时,所有焊缝应平行于横梁,不可横向焊接。
    f.采用交流电焊接时,筛箱应接地,防止电流通过轴承,否则,易导致轴承损坏。
(1) screen machine factory, the exciter in a lubricating oil injection, both anti-corrosion properties, valid for three months. Stored longer than three months after running 20min, can continue to corrosion for three months, working hours must be replaced with clean oil.
(2) keep the exciter vent flow (due to blocked easily lead to oil leakage). If the flow even after oil spill, it should replace the seals.
(3) The bearings should not exceed the normal work 75 ℃, the new exciter because there is a running-in process, and may therefore slightly higher temperatures, but after 8h after the operation, the temperature should be stabilized, if the temperature continues to too high, should check the oil level , oil level oil cleanliness.
(4) To ensure maze tank full of grease, dust, a large quantity of work situations, it should be more frequent filling grease.
(5) the replacement of V belt when the motor should be completely loose anchor bolts and easily into the V belt pulley shafts are not allowed to use sticks or other objects pry V belt, V belt tension force must be appropriate pulleys must be positive, the first time to adjust tension was conducted after 48h of work, and then re-adjusted once.
(6) exciter and the sieve box bolts for the bolt does not allow for normal bolts instead of the need for regular inspection of fastening at least a monthly check again. Any one of its bolts loose, will lead to other bolt cut, causing damage to sieve machine.
(7) using ring groove rivet joins the local permit a bolt to replace all the contact surfaces, or holes, should be no iron filings, ash, oil, rust burr.
(8) Use of high strength bolts, nuts washers must meet the "high-strength steel hexagon bolts, large hexagon nuts, washers and technical conditions" requirement.
(9) In order to prevent internal stress caused by welding, under normal circumstances do not allow the site to the sieve box and any auxiliary parts for welding, must be welded, the operator should be skilled personnel. Recommended the following steps.
a. To prevent the crack extension, crack 6mm diameter holes drilled at each end.
b. Cracks along the sides with a round spade shovel out the groove.
c. The first warm-about 60 ℃, with 3mm diameter welding rod (corresponding to grade), and to prevent any phenomena of slag bite of meat.
d. Polished on both sides of meat protruding welding, welding on a reinforcement plate.
e. If you need to screen surface bracket beam welding, all welds should be parallel to the beams, can not be horizontal welding.
f. Using AC welding, sieve boxes should be grounded to prevent the current through the bearings, otherwise easily lead to bearing damage.

 

 

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