Can loss in weight feeder or loss in weight feeding machine feed maleic anhydride, what specific conditions?   A loss-in-weight feeder (loss-in-weight feeding machine) can be used for feeding maleic anhydride, but the following specific conditions need to be met:   Characteristics and Challenges of Maleic Anhydride 1. **Physical State and Temperature Requirements**    - Maleic anhydride is a solid at room temperature (with a melting point of approximately 52-54°C) and needs to be heated to a liquid state (usually 60-80°C) for stable conveying.    - A **heating and heat preservation system** (such as an electrically traced pipeline or a jacket heating system) should be equipped to prevent solidification and blockage. 2. **Strong Corrosiveness**    - Maleic anhydride has strong corrosiveness to metals (especially ordinary stainless steel), so **corrosion-resistant materials** need to be selected:      - Materials for parts in contact with the material: **PTFE (polytetrafluoroethylene) lining, Hastelloy C276**.      - Sealing elements: **fluororubber (FKM) or perfluoroelastomer (FFKM)**. 3. **Safety Protection**    - Liquid maleic anhydride is prone to volatilizing irritating gases, so a **fully enclosed design** is required, and an **exhaust gas treatment system** (such as condensation recovery or activated carbon adsorption) should be configured.    - The equipment needs to meet the **explosion-proof certification** (such as ATEX) to avoid risks caused by high temperature or static electricity.    Equipment Selection and Modification Suggestions 1. **Configuration of Suitable Machine Types**    - **Heating type loss-in-weight feeder**: The hopper and conveying pipeline are integrated with an electric heating/circulating heat medium jacket to maintain the temperature above 60°C.    - **Corrosion-resistant structure**: Sensors, valves, and pumps in contact with the material need to be made of PTFE or Hastelloy materials.    - **Anti-crystallization design**: Screw pumps or vibration-assisted discharging are used to avoid local cooling and crystallization of the melt. 2. **Optimization of Operating Parameters**    - **Temperature control accuracy**: Within ±2°C to avoid excessive thermal decomposition (maleic anhydride may generate maleic anhydride gas at high temperatures).    - **Feeding accuracy**: It is recommended to select a **high-resolution weighing sensor** (≤0.1% F.S.) to ensure the accuracy of minor addition. 3. **Supporting Systems**    - **Nitrogen protection**: Fill the hopper with nitrogen to isolate oxygen and prevent oxidation side reactions.    - **Emergency cooling**: Start the cooling program in case of abnormal shutdown to prevent the residual material from carbonizing.    Precautions - **Direct contact with water is prohibited**: Maleic anhydride hydrolyzes violently when it comes into contact with water, so strict moisture prevention is required (blow dry air inside the equipment). - **Maintenance and cleaning**: Thoroughly remove the residual material after shutdown to avoid solid blockage (the pipeline can be purged with hot nitrogen). - **Safe operation**: Personnel need to wear gas masks and acid-resistant gloves, and emergency flushing facilities should be provided on-site.   **Summary** Maleic anhydride can achieve precise feeding through a **customized loss-in-weight feeder**. The key lies in: - **Corrosion-resistant materials + precise temperature control + fully enclosed explosion-proof design**. See our loss in weight feeding machine for MAH feeding.   It is recommended to communicate in detail with the equipment supplier about the process parameters (temperature, flow rate, environmental requirements, etc.) and conduct small-scale tests to verify the stability of the system. Nanjing PEGE can surely provide reliable liquid loss in weight feeder to feed Maleic Anhydride for clients all over the world.    

What Kinds of powder or granule materials can use loss-in-weight feeder for feeding?   The loss-in-weight feeder can be used for feeding a variety of powder materials and granular materials. The following are some common examples: Powder materials that can be fed by the loss-in-weight feeder 1. **Cement**: In the construction industry, cement is often in powder form and is precisely measured by a loss-in-weight feeder before being used in the production of concrete and other materials. 2. **Flour**: In the food processing industry, as an important raw material for making bread, pastries, etc., flour is often fed by a loss-in-weight feeder to ensure the accuracy of the ingredients. 3. **Milk powder**: In dairy production or related food processing, milk powder can have its addition amount accurately controlled through a loss-in-weight feeder. 4. **Lime powder**: In the chemical and construction industries, when lime powder is used in various reactions or as an additive, it can be fed by a loss-in-weight feeder. 5. **Coal powder**: In industries such as thermal power generation, coal powder needs to be precisely measured and then fed into equipment such as boilers, and the loss-in-weight feeder can meet this requirement. 6. **Talc powder**: Talc powder, which is widely used in industries such as plastics, coatings, and cosmetics, is often fed by a loss-in-weight feeder during the production process. 7. **Bentonite powder**: In industries such as foundry and drilling, bentonite powder requires precise feeding, and the loss-in-weight feeder is one of the commonly used equipment. 8. **Pigment powder**: In the production of coatings, inks, etc., pigment powder can have its color ratio precisely controlled through feeding by a loss-in-weight feeder.   ### Granular materials that can be fed by the loss-in-weight feeder 1. **Grain granules**: Such as corn, wheat, etc. In industries such as feed processing and grain processing, they are often precisely fed by a loss-in-weight feeder to control the formulation ratio of the products. 2. **Plastic granules**: In the plastics processing industry, for various plastic granules such as polyethylene and polypropylene, feeding by a loss-in-weight feeder can ensure the accurate supply of raw materials in processes such as extrusion and injection molding. 3. **Compound fertilizer granules**: In the manufacturing of agricultural production materials, compound fertilizer granules need to be proportioned and packaged according to a certain ratio, and the loss-in-weight feeder can achieve precise feeding. 4. **Salt granules**: In industries such as food processing and chemicals, the addition amount of salt granules needs to be precisely controlled, and the loss-in-weight feeder can be used in the feeding process. 5. **Sugar granules**: In industries such as confectionery manufacturing and beverage production, sugar granules can have the sweetness of the products accurately controlled through feeding by a loss-in-weight feeder. 6. **Activated carbon granules**: In the environmental protection, chemical and other industries, when activated carbon granules are used in processes such as adsorption, they can be precisely fed by a loss-in-weight feeder. 7. **Biomass granules**: In industries such as biomass energy production, during the combustion or further processing of biomass granules, the loss-in-weight feeder can be used for precise feeding. 8. **Pharmaceutical granules**: In the pharmaceutical industry, before processes such as tableting and filling of pharmaceutical granules, they are often precisely fed by a loss-in-weight feeder.

Nanjing PEGE loss in weight feeder is good and reliable feeding tool for precision dosing and composing.   Understanding PEGE Loss-in-Weight Feeders: Precision in Material Handling In industries where precision and consistency in material feeding are critical, loss-in-weight feeders play a pivotal role. Among the leading technologies in this space, PEGE loss-in-weight feeders have emerged as a reliable solution, ensuring accurate feeding, reduced material waste, and seamless integration into manufacturing processes. Let’s explore the functionality, benefits, and applications of PEGE loss-in-weight feeders. What Is a Loss-in-Weight Feeder? A loss-in-weight feeder is a material handling device designed to deliver precise amounts of material over time. The system measures the weight of the material in the hopper and adjusts the feed rate to ensure accuracy. As the material is dispensed, the system compensates for the decreasing weight, maintaining consistent flow rates. The "PEGE" in PEGE loss-in-weight feeders signifies a brand or specialized design focusing on robust performance and tailored solutions for specific industrial needs.

How Do PEGE Loss-in-Weight Feeders Work? PEGE feeders operate on a straightforward yet effective principle: Material Storage: Material is stored in a hopper mounted on load cells. These cells continuously measure the weight of the hopper. Dispensing Mechanism: Using a screw feeder, belt, or vibratory system, the material is discharged at a controlled rate. Weight Monitoring: As the material is dispensed, the system detects the reduction in weight and adjusts the feed rate to match the desired output. Feedback Control: A closed-loop control system ensures that the feed rate remains constant, even as the properties of the material change over time. This precise monitoring and adjustment minimize errors, making PEGE feeders ideal for processes requiring high levels of accuracy.

Benefits of PEGE Loss-in-weight Feeder   Typical Nanjing PEGE  loss–in-weight feeders are used to negate the use of weigh hoppers and to eliminate the impact of material. This system is particularly useful when the product to be weighed is sticky and does not have good flow properties. A. Improve measurement accuracyB. Reduce premixing workloadC. Improve product stabilityD. Reduce dust pollution and be more environmentally friendly. E. Improve work and production efficiency.

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  

China Nanjing Pege Loss in Weight Feeding System NANJING PEGE TECHNO MACHINE CO., LTD is a leading quality and customer-oriented manufacturer, specialized in providing various machines for rubber and plastic industry. Rubber sector machines focus on deburring and cutting include cryogenic de-flashing machine, spin trim de-flashing machine as well as rubber strip or gasket cutting machine. Plastic sector machines focus on material precision feeding and mixing including Gravimetric Loss-in-weight (LIW) feeders and its affiliated system including uploading and supplementary system.   Our plastic machine department also continuously develops and optimizes the Gravimetric loss-in-weight feeding machine to meet the customer demand to improve feeding efficiency, to reduce labor work tense as well labor cost.   Gravimetric Feeder is widely applied in the industry of Plastic, Chemistry, Food and Pharm, used for material precision mixing, dosing, and feeding application.   By using world well-known brand components and high professional production technology, all the machines produced by NANJING PEGE company are of reliable quality and high stability with the features of lower energy consumption as well as less maintenance cost. With the efforts from our sales and production team, the "Frozen Shot" brand PG series cryogenic deburring machines, ‘PG’ brand Gravimetric LIW Feeders are sold not only in the domestic China market, but also many other countries like Poland, Russia, Croatia, Slovenia, Hungary, Malaysia, and more from all over the world.  Principle   The measuring hopper is mounted on a platform scale (frame structure equipped with precision sensors). When the feeder is running, the motor drives the feeding screw, vibrator or pump to move. At the same time, the material in the measuring hopper flows out. By reducing the weight in the unit time, obtain the actual feeding amount, compare it with the set feeding amount to get the error value, and then adjust the speed of the feeding motor through the PID closed-loop control algorithm to achieve the precise feeding requirements. This process ensures an accurate feeding or dosing during the production process. The general purpose of Loss in Weight feed system is to accurately weigh and control the output of variable products either, continuously or as a batch. Benifits Typical loss–in-weight feeders are used to negate the use of weigh hoppers and to eliminate the impact of material. This system is particularly useful when the product to be weighed is sticky and does not have good flow properties. A. Improve measurement accuracyB. Reduce premixing workloadC. Improve product stabilityD. Reduce dust pollution and be more environmentally friendly. E. Improve work and production efficiency.

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.