Single Screw Loss in Weight Feeder for Granules Feeding

• Type: Screw Feeder
• Movement Mode: Linear
• Appearance: Closed-Type
• Capacity(t/h): 150-300
• Motor Power(kw): 1~10
• Accuracy: 0.5%
• Model NO.: FW series
• Hopper Material: SUS304
• Display: Touch Screen
• Feeding Type: Single Screw
• Transport Package: Wooden Carton
• Trademark: PG
• Origin: China
• HS Code: 8423303090
• Production Capacity: 50sets/Year

Product Description

Single Screw Loss-in-weight Feeders

General Introduction
Loss-in-weight feeders can be used for both small to medium feeding ranges. They work with extreme precision under optimum ambient conditions. They are very flexible and can handle bulk solids, liquids and even poorly flowing products. They are used in many continuous processes such as feeding extruders requiring a high level of short-term feeding consistency. They are also used in the food industry and in laboratories by means of appropriate storage containers and adapted feeding devices. The design varies from compact constructions to modular concepts depending on usage.


Principle
When the material is fed through the feeder, the weight of the system decreases. Controlling the loss-in-weight feeder changes the feed rate and as a result the speed of weight loss matches the desired feed rate. Loss-in-weight feeder controls continuously check whether the material is flowing.
All components and/or any product they contain is continuously weighed during operation: the feeder, the hopper and the material.
Gravimetric feeders, for instance, have slight fluctuations in their feed rates. These fluctuations occur in the filling capacity of the augers and in the bulk density of the material. These are compensated for by adapting the auger speed in order to ensure the product is dispensed evenly.

Composition of loss-in-weight feeder
Loss-in weight feeders for bulk materials consist of storage hoppers, controlled feeding devices such as augers, screws, agitators, pumps as well as scales or load cells, loss-in-weight controllers or rather loss-in-weight feeder controllers.
The Nanjing Pege's loss-in-weight feeders have, for instance, been optimised for the compound industry. Flexible installation options, different feeder sizes and hopper sizes are adapted to each available space. Vertical container walls mean that virtually every millimetre is used to the max and impact positively on the bulk material flow. Thanks to the off-centre auger arrangement, up to six feeders can be positioned next to each other. The drive and auger setup can still be customised during assembly.


  

Material Applicable
Resin granules, powder, and pellet, blendings.
Features
 

★ The cantilever sling-type weighing frame supports the storage hopper, which has the characteristics of damping and anti-horizontal interference, which can effectively shield the non-weight value interference from the vibrator, and always more accurately measure the flow of the system.
★ Detachable structure, simple maintenance and cleaning.
★ Add a stirring device to prevent bridging, separate stirring and feeding motors (FW-25 adopts combined stirring, and the stirring speed and feeding are linked in a fixed ratio), the speed can be adjusted separately.
★ The electronic control system reserves an Ethernet communication interface for remote control.
★ Feeding adopts servo motor, which has features of light weight, low vibration, low speed and constant torque.
★ The equipment controls the flow in the speed PID mode, and assists in the time mode to control the start and stop and two alternate operation logics

Specifications

Parameters/Model	PG-FS-48	PG-FS-63	PG-FS-89	PG-FS-114
Capacity range	20-100kg/h	50-300kg/h	100-600kg/h	300-1500kg/h
Hopper Volume	40L	100L	150L	250L
Load Cell Range	50kg	100kg	150kg	200kg
Net Weight	86kg	140kg	170kg	190kg
Size	550x340x680	680x430x900	790x480x1050	950x530x1270
Power Servo Motor Drive	AC380V 3ph Feeding Motor 0.25kw	AC380V 3ph Feeding Motor 0.4kw	AC380V 3ph Feeding Motor 0.75kw	AC380V 3ph Feeding Motor 0.75kw
Screw Type	spiral screw or solid single screw	spiral screw or solid single screw	spiral screw or solid single screw	spiral screw or solid single screw
Dynamic accuracy	±0.5%	±0.5%	±0.5%	±0.5%
Min. Weight sensitivity	1g	1g	2g	2g
Discharge tube	Φ48x3	Φ63x3	Φ89x3	Φ114x3

1,Capacity range value is calculated based on materials with stacking density 0.6g/m
2,Dynamic accuracy vale is tested based on working condition status longer than at least 30 seconds.





FAQs on loss-in-weight feeders
 

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 lead time for the machine?

Generally, one group of 3 sets feeders production time will be about 60 days.
 

1. How do the gravimetric loss-in-weight feeder packed and shipped?

The loss in weight feeders are well packed and fastened in the plywood carton and then delivered to the seaport for sea transportation to the countries all over the world.