Multipoint discharge machine

The transformation of multi-point discharging machine, 2019 - 10 - 12 a company has four clinker silo, the clinker silo roof material using multi-point discharging machine, the unloader is a rotary disc conveyor, construction since 2005, after installation, frequent malfunction, even if the annual overhaul, replace a full set of track, chain, raw material, after walking round, still malfunctions, consume a large amount of manpower and material resources. The multipoint discharge machine (the production of clinker kiln according to different allocated to different quality clinker silo, the normal operation of unloader for the next system ( Cement grinding system) Provide reasonable raw material collocation, ultimately guarantee the quality of cement products. The principle of multi-point discharging machine is the material by determine the location of the inlet was sent one tray, along with the material plate movement. Through the control system to control the lower discharging device of the opening and closing of the actuator, control of material discharge specified area ( See figure 1) 。 Figure 1 a multipoint discharge machine schematic through observation of the multipoint discharge machine carefully, think that the causes of the frequent failure is a result of the design of multi-point discharging machine, in the operation of the tray to take when in turn head to tail wheel turn, in the unloading point straight and unloading machine has two alternate path. Because of its complex structure, multi-point discharging machine at a higher rate after discharge outlet and the head, tail wheel, too fast walking wheel, easy cause credit card coal tub of failure. Find out the reason, we in multi-point discharging machine has carried on the corresponding technical reformation. （ 1) Change the speed more unloader. Multipoint discharge machine design transport capacity of 130 ~ 180 t/h, delivery rate is 0. 24 - 0. 28 m/s, the company no. 2 kiln clinker production up to 110 t/h, such as the rate by 30%, plate material is equivalent to increase by around 30%, or 110 x1. 3 = 143 t / h。 Visible, as long as the rate of ≯ 30% lower, equivalent to a material plate material accumulation will not more than the original design capacity. On the basis of the selection of transmission reducer, decided to change the speed reducer of the original 99 ratio to 121 ratio. 121/99 = 1. 22, namely the rate by 22%, according to the largest clinker throughput of 110 t/h, plate feeding clinker is 134 t/h, fully meet the design capacity of 130 ~ 180 t/h, running is safe. （ 2) Change the coal tub rail connection reversing and activities. The original rail joint for the pin connection, track and activity, pin and pin hole as hard friction, run after a period of time, large amount of wear and tear, and both sides are not synchronized, the coal tub turning the damage card coal tub easily. Our way to the connection, bearing at activity track pin hole, reduced activity orbital motion clearance, ensure synchronous positions ( As shown in figure 2, 3) 。 Figure 2 rail connection signal tutu 3 activities track with bearing ( 3) To improve the chain with the hopper connection mode. When original shaft connection on both sides of the half shaft connection (independent See figure 4) , increase the self-tuning function of multipoint discharge machine, in the long run after wear and tear or card clinker, multi-point discharging chance guild a momentary jam phenomenon, the original general axial self adjusting ability is poor, prone to jam, long axis deformation, deformation after damage chain pin set of fault, etc. Figure 4 coal tub connecting shaft modified schematic since March 2015 to modify unloader, obvious effect, reduce the failure rate 70%. Spare parts replacement cycle from six months to a year and a half ( A spare parts to replace the chain, coal tub, shaft costs about 60000 yuan) To produce clinker can enter the designated clinker silo, timely and accurate in clinker homogenization, reduce the failure rate at the same time to save a large amount of manpower and material resources, guarantee for the cement production next procedure. Source: the technology of cement 01, 2018