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For plastic processors, according to weight in order to get and maintain an accurate flow of bulk materials, we must first understand and consider the following seven main factors: the material,Used CAT 14G Motor GraderUsed CAT 14G Motor Grader,feeder works. weighing systems, mechanical design, control scheme, operating environment and maintenance.
1, the material
In plastic processing, feed encountered in material handling handling characteristics vary requirements of the plastics processing industry and commerce shall determine the technical specifications and selection to the feeder stage, it is necessary to give full attention to the assessment of material properties.Used CAT950E Wheel loaderUsed CAT950E Wheel loader,Typically, the material determines the type of feeder. For those difficult to deal with, will be overflowing of materials or difficult the flow of materials, the best weight loss feeder. The characteristics of the feeder can be properly configured according to the specific material. For the free flow of materials is not required to use any special configuration, feeder belt-type feeder is the best choice. Of course, this is just a general principle, in order to give the feeder and materials, the correct match,Used CAT D6H bulldozerUsed CAT D6H bulldozer,plastics processors in close consultation with the feeder supplier in the laboratory some of the necessary tests to confirm the right selection.
2 works
The two kinds of weighing of the belt type and weight loss feeder is today the most used type of feeder. Their respective feed of accuracy of their works are not the same. Weigh belt feeder process, when the material into the feeder, the material may form a substantially uniform material bed is then transported through a shear gate. Used Tadano CranesUsed Tadano Cranes,When a thin layer of material quickly by weighing the feeder detects the weight of the material. According to the detected weight belt speed continuous automatic adjustment of the weight of such materials discharged can always controllable state. By contrast, the in weightlessness feeding method, the entire feeder, the material in the hopper and discharge materials continuously weighing, feeding system to lose weight the feeder output rate (rate) is accurately control to achieve the desired feed rate.
3, the weighing system
Whether it is belt-type or select a weight loss feeder, in order to precise feeding is necessary to ensure accurate weighing. Weighing belt in the feed, the feed rate for a given operating range, regardless of the requirements of my company specializes in producing shaker special motor, the CZ electromagnetic warehouse wall vibrators, vibration motor,Used CAT320C excavatorUsed CAT320C excavator,explosion-proof vibration motor, concrete vibration vibration equipment, plate vibrators, linear vibrating screen, vibrating platform, technology, high quality, low price, is the best vibration screening equipment manufacturers need to measure the weight is relatively small and almost constant. Therefore, the linearity of the belt weighing system is not as good as weight loss to the feeding process is so important. The weigh belt feeder process generally does not require configuration measurement to measurement of the load applied to the sensor operating range, so the lower resolution requirements of the weight of the material. However, the accuracy of the weighing belt feeder belt detect any change in weight is extremely sensitive to this change is caused by the adhesion to the material on the belt, or zero drift caused by the weight sensor.
Weightlessness feeding process requires weighing system has a wide operating range, excellent linearity, Used Catpillar 966F Wheel LoaderUsed Catpillar 966F Wheel Loader,we can accurately determine the total weight of a high enough resolution and the need to quickly measure the level of response capability in the feeding process.Used Cat 950F Wheel LoaderUsed Cat 950F Wheel Loader,In addition, weight loss in the low-rate feed applications, if compared to the total weight of detected between the two moments of weight loss is very small, the measurement of the level of resolution is especially important. This is because the weightlessness feeding process is not weighing belt feeding process as dependent on the stability of zero, its focus is the change in the weight, rather than the weight of the absolute measured values.
K-Tron's proprietary intellectual capacity sensor for true digital works to any process weighing device to meet the weighing belt and weightlessness to the specific requirements in material application, drift-free digital format the highest resolution.Used Cat 330C ExcavatorUsed Cat 330C Excavator,SFT run does not produce deflection, making it sensitive enough to accurately track the weight loss to the changing load in the feed process, while it is stable enough to be avoided and rely on the deflection of the weighing system (such as LVDT solver) associated errors.
4, the mechanical system
Because of the mechanical structure of the weight loss feeder is simple, people rarely worry about the accuracy of the material. However, the application of the belt feeder, feeding accuracy by weighing the impact of the dislocation. Specifically,Used komatsu PC210 ExcavatorUsed komatsu PC210 Excavator,it is directly in the the weighbridge upstream of the fixed material and weighing dislocation will cause an unexpected increase or decrease the feed rate. In addition, any traction with the belt tension or cleanliness-related factors will cause the feed rate of errors. Therefore, in the equipment selection process and in the preparation of any maintenance program should be on the reliability and validity of the above system assessment.
5, the control
Any feeder, regardless of the belt feeder, weight loss feeder configuration of a controller to perform the basic functions of the device is running. In general, reliable accuracy often depends on the strengthening of the control functions, and provide enhancements in order to create certain conditions or to meet certain requirements.Used Cat 966G Wheel LoaderUsed Cat 966G Wheel Loader,The requirements of the weigh belt feeder process enhanced features include the transportation lag delay, automatic belt weighing, overflow scatter detection and a variety of projects. Weight loss needed to feed process control enhancements, including the complexity of weight in order to solve the environmental impact of interference signal filtering, and coupled with the expected array in order to maintain accuracy in the feeder volume measurement coupled with the material stage and control technology.
6, the environment
Concerned about the operating environment of the feeder will often reveal to ensure reliable operation of the method feeder. For example, when the vibration is the impact of factors, may take measures to give the feeder and other equipment to isolate. These measures typically include the use of flexible import and export of joints and the damping device is installed on the device. In addition, whenever possible,Used Cat 140H GraderUsed Cat 140H Grader,should try to avoid high temperature, humidity, wind and other environmental factors on the feeder.
7, maintenance
Without a certain level of maintenance, it is impossible to expect precision equipment will work. Although today's advanced feeder needs little maintenance, but maintenance is still very necessary. These include: regular cleaning of the weighing belt feeder inside, to avoid the errors of the feed material accumulation; check whether the belt wear and adhesion of the material in the belt to be replaced, if necessary,Used Shantui SG21-3 Motor GraderUsed Shantui SG21-3 Motor Grader,check with the belt associated with the mechanical system is running correctly; regularly check all flexible joints to ensure a solid connection. If the connector is not tight, it will affect the loss-measurement accuracy of the weight of the feeder.
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July 18, 2012, 8:05 am