Nanjing Pege’s “PEIKE” brand Gravimetric Loss-in-weight feeder   Introduction Nanjing Pege Techno Machine Co., Ltd is specialized in designing and producing the low in weight feeders including single and twin screws loss in weight feeder, liquid gravimetric feeder, micro scale feeder, vibratory feeder, Paddle massaged flexible PUR hopper feeder and multi-ingredients compounding feeder. Our products are successfully applied in various dosing and blending(mixing) field, like chemistry, engineering plastics, cable, food processing, pharmaceutical and building material industries. Our head company is constantly dedicated to providing the solutions of weighing, feeding, transmission, packing and automatic stacking, to provide the professional products and service for the customer worldwide both in solid and liquid product manufacturing field. To strengthen our competence and leading position in the gravimetric weighing field, we integrated our profound technology and talents to better improve our design and manufacturing competence.   PRODUCTS Twin screw loss-in-weight feeder  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. Vibrating Tray Loss-in-weight Feeder   Application material Flack, Glass Fiber, Cylindrical Material, Irregular Shape Material from Recovery   Features 1. Cantilever type weighing frame ensure lower gravity(barycenter) center, weaker vibration and anti-interference performance of the whole feeder. 2. Double weighing sensors weight platform ensure good balance degree and no unbalanced loading 3. 485 Digital transmission of weighing data has the feature of no attenuation and anti-interference during the period of data transmission 4. Vibration type feeding has no damage on the material itself. 5. Electrical magnetic vibration type feeding ensures tiny machine wear and tear and nearly none of maintenance parts are needed   Applications Material Liquid Additive DCP Silane Maleic Anhydride   Features 1.       Cantilever type weighing frame ensure lower gravity(barycenter) center, weaker vibration and anti-interference performance of the whole feeder. 2.       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. 3.       485 Digital transmission of weighing data has the feature of no attenuation and anti- interference during the period of data transmission. 4.      Hydraulic Diaphragm Pump, Plunger Pump, Gear Pump are selectable. 5.       Equipped with complete isolated SUS304 bellow spring damping type spray gun, has the feature of keeping pressure stable within 48 hours. 6.      Explosion proof, heat preservation by water or electricity are selectable   Flexible Paddle-Massaged PUR Hopper Feeder   Application material Resin Particles, Resin powder, Calcium Carbonate, Talcum powder, Titanium White Powder Carbon Black, Flame Retardant Antioxidant   Features ■Suitable for all-purpose bulk material, especially for the powder material with humidity and low flowability. ■The cantilever sling-type weighing scale supports the storage hopper, which has the characteristics of vibration reduction and anti-level interference. This design can effectively shield the non-weight value interference from the vibrator and measure the flow of the system more accurately. ■No bridging thanks to straight walled hopper. ■Gentle feed capability by paddling flexible hopper with external agitation. ■Easy to disassemble and to clean, convenient for maintenance. ■No direct touch between stirring unit and material ensures no damage on the materials. ■Improve material flowability, optimize dynamic loadings of the screws, to ensure stable and accurate flow rate. ■Arch breaker inside of the machine can ensure efficient weighing feeding even the humidity rate in the materials reaches to 20%   CONTROL SYSTEM FEATURES   1.  Self-learning: The equipment can automatically identify the bulk density and fluidity of the material during the pre-operation, self-tuning during operation and continuously optimizing the best P (proportion) and I (integral) values to ensure rapid response of the system operation 2. Anti-interference: Automatically identify the intensity and duration of the interference and adopt emergency backup procedures to deal with it urgently to ensure the stability and accuracy of the system. 3.       The software is independently developed. After the product leaves the factory, the original program will be burned on the Micro SD card and given to customers randomly. Hardware adjustment. 4.      The mainstream communication formats in the market can be customized according to customer needs, such as Modbus, PPI, MPI, Profibus, Ethernet and other communication formats, so that customers can access the factory's main control system. 5.       The weighing signal transmitter is a customized product with a resolution of one hundred thousandth. The transmitter is installed on the weighing frame and is about one meter away from the weighing sensor. The signal transmission uses RS485 twisted shielded wire and digital transmission. Eliminate signal attenuation and interference 6.      The controller uses Siemens SMART series PLC, each scale uses a CPU, and each scale (each CPU) is connected in parallel by Ethernet. 7.       The RS485 serial port of the Siemens controller communicates with the weighing transmitter, installs an RS485 serial port to communicate with the inverter or servo controller, and the built-in Ethernet port communicates with the touch screen or host computer through the switch. Digital communication throughout the network, high speed, efficiency and stability 8.      The system can display and record operating parameters and can be installed with industrial control computer systems such as domestic Kingview, Siemens Wincc. At the same time, a scanning gun can be installed for barcode parameter reading, process flow recording, and quality traceability.   FAQs on Peike loss-in-weight feeders 1.     What kinds of materials can be used for loss in weight feeding? Resin granules, flack, flocculus, powder and pellets blendings Resin Particles, Resin Powder, Calcium Carbonate, Glass fibers Talcum Powder, Titanium White Powder Carbon Black, Flame Retardant Antioxidant Flack, Glass Fiber, Cylindrical Material, Irregular Shape Material from Recovery Liquid Additive, DCP Silane, Maleic Anhydride   2.    What kinds of feeders are included in the loss in weight feeder series? Our feeding product range includes micro loss in weight feeder, single screw feeder, twin screw feeder, vibratory tray feeder, Paddle massaged Polyurethane Hoppe feeder and liquid loss in weight feeder.

Nanjing Pege Mini Type Loss in Weight Feeder   Material Applicable   Small and precise quantity of Resin Powder, Calcium carbonate, French Chalk, Tio2, Carbon Black, Various Additives like Anti-Oxidant, UV.   Features ★Specially suitable for small quantity and high precision powder material ★The cantilever sling type weighing frame supports the storage hopper, which has the characteristics of vibration reduction and anti-level interference, which can effectively shield the non-weight value interference from the vibrator, and measure the flow of the system more accurately ★Use double servo motor to control feeding and stirring, the stirring speed is adjustable to ensure a most suitable gear ratio with feeding speed. ★The features of servo motor like light weight, small volume, low vibration, stable torque in low speed will improve the feeder the ability of anti-interference and feeding. ★485 Digital transmission of weighing data has the feature of no attenuation and anti-interference during the period of data transmission. ★No stirring motor on the top of hopper ensure stable frame, less interference and precision weighing data. ★Control system and operation panel can be embedded with the loss in weight feeder   Specifications Parameters/Model PG-FT-18 PG-FT-20 Capacity range 0.6-5kg/h 3-30kg/h Hopper Volume 4L 10L Load Cell Range 5kg 20kg Net Weight 30kg 40kg Size 650x320x680 740x330x700 Power AC220V 1ph Feeding Servo Motor 0.2kw Stirring Servo Motor 0.4KW AC380V 3ph Feeding Servo Motor 0.2kw Stirring Servo Motor 0.4KW Screw Type Solid Twin Screw Solid Twin Screw Dynamic accuracy ±0.5% ±0.5% Resolution 1/100000 1/100000 Discharge tube Φ26.5x3x2 Φ32x3x2  

Loss-in-Weight Overview 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. Advantages, Limitations and Considerations Accuracy – In practice, with today’s advanced weighing and control technologies, reliably high performance accuracy is routinely realized, notwithstanding the significant demands placed on weighing and control operations in loss-in-weight feeding.   Range – Loss-in-weight feeding systems are available for the complete range of rates encountered in plastics compounding and extrusion operations.   Material Handling - Any feeding device suitable to the process material can be employed (e.g., screw, auger, vibrating tray, etc.). Even liquids whose specific gravity varies can be gravimetrically controlled by substituting the hopper/feeder with a holding tank and pump or control valve. (Related info)   Material Containment - Loss-in-weight feeders readily lend themselves to complete material containment where dusting or safety/toxicity concerns apply.   Tare – Under the loss-in-weight principle, moment-to-moment differences in weight matter, not absolute weight. Thus, for the purpose of feed rate control, tare becomes irrelevant.   Weighing – Considering the fact that loss-in-weight feeding involves the accurate detection of small, moment-to-moment changes in system weight while simultaneously weighing a relatively massive feeding system, the demands on the weighing system are substantial. Such measurement requires the highest possible levels of resolution, linearity and stability along with sophisticated filtering and signal processing to extract meaningful weight data from spurious disturbances such as jostling or ambient vibration in the process environment.    Isolation – Loss-in-weight feeders must be effectively isolated from their environment for accurate weighing. Flexible supply and discharge connections typically suffice for process connections, and appropriate measures may be needed at installation to assure that in-plant vibration is not transmitted to the feeder through its mounts.   Refill - Periodic hopper replenishment is required. During this intentionally brief phase, whether accomplished manually or by an automated system, weight measurement is unavailable due to the inflow of material, temporarily preventing true gravimetric control. For materials whose density does not increase appreciably with increasing headload (such as pellets, for example), feeder speed can be held constant throughout refill. Or, for variable-density powders, granules and the like, feeder speed may be automatically reduced to gradually slow feeder speed during refill, accurately compensating for the effect of increasing headload-related material compaction. (Related info)   Size - Unlike the other two operating principles presented below, the physical size and installation footprint of loss-in-weight feeding systems roughly corresponds to its feed rate range. This makes for a relatively small and compact feeder when handling additives, a major benefit where space is at a premium such as when clustering units over an extruder inlet. However, physical size may become a concern for higher rate installations. High-rate feeders tend to be large, require a correspondingly large installation footprint, and may also require a significant support structure. Because of its high accuracy, innate material handling flexibility and ease of material containment, combined with enabling advances in weighing and control, loss-in-weight feeding has matured to become the dominant approach to gravimetric flow rate control since its introduction nearly 50 years ago.