Twin Screw Loss In Weight Feeder

Principle
In loss-in-weight feeding, the entire feeder, hopper and material are continuously weighed. As the feeder discharges material, the rate of decline in system weight is computed, and feeder speed is adjusted to maintain the desired (set) rate.

Application material

Resin Granules, Resin Powder, Calcium carbonate, French Chalk, Tio2, Carbon Black

 

Features

1. Cantilever type weighing frame ensure lower gravity(barycenter) center, weaker vibration and anti-interference performance of the whole feeder.

2. Vertical U-shaped hopper with mirror-like inner wall and without corner enclosure can ensure no bridge of the materials

3. Stainless Steel bellow sensor has the feature of only slight deformation after long time use, and high precision with less signal drift, and is durable for bad environment use

4. 485 Digital transmission of weighing data has the feature of no attenuation and anti-interference during the period of data transmission.

5. Feeding and stirring is operated separately, using independent agitation motor and stirring speed can be adjusted according to the demand.

6. No agitation motor on the top of the hopper will surely reduce the vibration during the operation, then this design will achieve high stability and high accuracy.

 

Specifications

Parameters Model	FT-28	FT-38	FT-46	FT-64
Capacity range	20-100kg/h	50-300kg/h	100-600kg/h	200-1200kg/h
Volume	40L	100L	150L	250L
Range	50kg	100kg	150kg	200kg
Net Weight	86kg	140kg	170kg	190kg
Size	550x340x680	680x430x900	790x480x1050	950x530x1270
Power	AC380V Feeding motor 0.25kw +stirring motor 0.15kw	AC380V 3ph Feeding 0.37kw +Stirring 0.2kw	AC380V 3ph Feeding 0.55kw +stirring 0.4kw	AC380V 3ph Feeding 0.75kw +Stirring 0.75kw
Screw	Solid Twin Screw	Solid Twin Screw	Solid Twin Screw	Solid Twin Screw
Dynamic accuracy	±0.5%	±0.5%	±0.5%	±0.5%
Resolution	1/100000	1/100000	1/100000	1/100000
Discharge tube	Φ45x3x2	Φ57x3x2	Φ65x3x2	Φ89x3x2

Micro Type Twin Screw Feeder Specifications

Parameters Model	FT-15	FT-20
Capacity range	0.5-3kg/h	2-15kg/h
Volume	5L	8L
Range	3kg	5kg
Net Weight	40kg	50kg
Size	510x340x480	530x360x480
Power	AC220V 1ph Feeding Servo Motor 0.1kw Stirring Servo Motor 0.1KW	AC380V 3 Feeding Servo Motor 0.2kw Stirring Servo Motor 0.2KW
Screw Type	Solid Twin Screw	Solid Twin Screw
Dynamic accuracy	±0.5%	±0.5%
Resolution	1/100000	1/100000
Discharge tube	Φ26x3x2	Φ30x3x2

FAQs

1. How does loss in weight feeder works?

Gravimetric loss in weight feeder is an instrument that is important to control and measure the speed of a substance in an instrument system. This equipment can handle the bulk solids. It allows the solid to discharge at a constant weight per unit time. The unit of measurement is kg/min or Kg/hour. The signal about the weight is used as a system of feedback control. It controls and monitors the feed rate that enters a instrument. The weighing systems include several examples such as platform scales, load-cells, weigh hoppers, etc. Depending on the overall process, the gravimetric feeder may be a loss-in-weight system or a gain-in-weight system.

1. What are the most important benefits the gravimetric feeder can give to you?

To ensure excellent quality of final product by accurately metering the bulk ingredients.

To reduce the labor cost and improve labor work environment

To Improve product stability

Reduce dust pollution and be more environmentally friendly

1. What is general accuracy rate of the good loss in weight feeder?

Our general feeder’s feeding accuracy rate can be 0.5%. The micro twin screw loss in weight feeder accuracy rate can be up to 0.3%.

1. What is the main composition of a typical loss in weight feeder?

Loss-in weight feeders for bulk materials consist of storage hopper, controlled feeding devices such as augers, screws chutes, pumps as well as scales or load cells, loss-in-weight controllers or rather loss-in-weight feeder controllers. Optional: e.g. agitators to improve the quality of the bulk material.