Structural Characteristics of Siemens Belt Scale Frame

The core part of the belt weighing feeder is the belt scale. The weight is detected by the weighing sensor under the belt scale frame.Siemens belt scale is mainly composed of a scale frame, belt scale controller and speed sensor;The structure characteristics and precision of the weighing feeder system are mainly determined by the design structure of the belt scale.So there's no load bearer.Compared with other scale frame structure, it has a simple structure, compact design;Easy installation and maintenance;Modular design, good versatility;And high precision features

Siemens belt scale features 1: simple structure, compact design

The structure of the direct bearing scale frame ensures that the weight of the material is directly added to the weighing sensor through the weighing idler set. The tare weight and the material weight are weighed together, so the structure of the belt scale frame is very simple and the weight is very light.

Siemens belt scale features 2: easy installation and maintenance

Because the structure of the direct support scale frame is very compact, there are no moving parts, and there are no problems such as fulcrum wear.Compared with other belt scale frame structure, the surface area of the horizontal direction is very small, and it is not easy to cause zero change due to ash accumulation (hanging material).The scale frame has the characteristics of modular, good versatility scale frame structure is not only simple, for different width belt parts versatility is also better, in addition to the static beam, dynamic beam width corresponding changes, the rest of the almost the same.Meanwhile, the modular design structure greatly reduces the workload and cost of maintenance and replacement of spare parts.

Because of the high accuracy of the scale frame is a patent product triple beam parallelogram weighing sensor, can completely avoid the impact of the horizontal force between the friction belt and the supporting rod on the accuracy of the belt scale, its repeatability is 0.01%, nonlinear and hysteresis are 0.02%.Such high accuracy is not only enough for the nominal accuracy of the belt weighing feeder of 0.5%, but also there is room.Because of the use of direct load-bearing structure, it also reduces the loss of measurement accuracy brought by these components and the interference brought by mechanical vibration to the weighing system in the process of material conveying.

In addition, Siemens belt scale structure also adopts a single roller dual sensor design structure is also very characteristic, not only to ensure the Balance of the whole weighing system (two points support), but also to ensure that when the fabric is not uniform, can be balanced (Balance) technology to maintain the system accuracy in the most ideal state.

Siemens belt scale characteristics 3: scale frame structure design is delicate

Previously, we are choosing belt feeding machine, the feeder overall scale frame structure design, materials, manufacturing process and not very attention, but in my cement plants use process found that the use of many feeder at the beginning of the installation, basically can guarantee the normal, or even to achieve high accuracy, but in the use of less than 1 year,The whole structure of the scale body began to deform, resulting in the accuracy of the whole scale can not be guaranteed.When the scale body is slightly deformed, the accuracy of the belt feeder can be corrected by different calibration. But if the scale body is seriously deformed, it can only be overhauled or even replaced as a whole, which causes a great waste of investment cost and increases the huge maintenance cost.

We have also discussed the causes of this problem, in fact, mainly because the belt scale manufacturers in the design and manufacture of the scale frame process, the use of the scale body steel material is too thin, the manufacture is relatively simple.

As an old German company, Siemens has shown its meticulous and perfect attitude in manufacturing technology: the whole scale frame adopts 6mm cold-rolled steel plate;

Different domestic and foreign most manufacturers generally use welding or I-steel design structure, Siemens WF series weighing feed control function combination, basically meet the requirements of cement industry application.

The feeding machine adopts the folding steel technology as a whole, all connected with bolts, and has no weld as a whole;The cantilever belt structure makes it very convenient to install and replace the ring belt. The belt replacement can be completed quickly without dismantling any parts. As a consumable part, the belt replacement is inevitable.

Belt scale surface all adopts the most advanced baking process, different from the previous painting and painting process, the process not only makes the surface appearance of the scale body is very smooth, but also can ensure that the surface of the scale body even in the case of wind and rain, the scene by acid gas corrosion, can still ensure the surface integrity for a long time.To avoid the past almost every year need to paint the balance body maintenance work, and some scale paint is too "thin", often used less than half a year because of paint leakage and rust.

According to Siemens, Siemens general design of belt scale feeder products are basically in accordance with high standards, long life goals to implement, from the design and manufacturing details of these belt scale belt feeder, can be convincing.

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