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  Gravimetric Blender Details description
product name:Gravimetric Blender
release time:2020-05-13 11:42:20
Price:¥USD 4990
simple description:Gravimetric blender also called as gravimetric dosing system or gravimetric batch blender, is an industrial device used in plastic production industry to dose or weigh two or more components and then mix them together prior to processing in the molding machines.
weight :100.00
unit weight:KG
characteristic:For Plastic Material Dosing and Mixing
patent:Automatic Weighing and Mixing Control System
Producing country:CHINA
Product alias:Gravimetric Batch Blender
  Gravimetric Blender Product introduction

Gravimetric Blender parameter

Model HGB-50
Qty of Group  number  4
Mixing capacity(kg/hr) 50
Batch weight(kg) 0.6
Main material  mixing range(%) 5~100
Additive mixing range(%) 0.5~10
Main hopper volume(L) 18
Additive hopper volume(L) 18
Mixing barrel volume(L) 6
Power supply(V/Hz)
Total power(kW) 0.12
Compressed air (kgf/cm2) 6~8
Max. noise level(dB) <75

1) Dosing accuracy are refer to each ingredient accuracy ;   
2) standard valves are not suitable powder dosing;
3) Max .output of each model and dosing accuracy are based on the data from bulk density 0.8 ,dia. 3~4mm pellets in a test criteria of continuous running.
We reserve the right to change specifications without prior notice .

Gravimetric Batch Blender

Gravimetric Blender Equipment principle

A gravimetric blender has two or more hoppers arranged above a weigh-pan which is controlled by a very sensitive load cell. And the hoppers will open and close under control of the slide-gate valve. Once the blender is turned on and the recipe is selected, it will dose and mix materials automatically.

For instance, if you select recipe A which is comprised of natural resin 90%, regrind 8%, color 2%, and you preset the batch weight as 1000g, then the PLC inside the blender will control the open/close of the hopper valves in order. First natural resin hopper open and resin flows down into the weigh-pan until it reaches 900g, then the valve closes. Secondly, the regrind hopper valve opens and regrind flows down into the weigh-pan until it reaches the amount of 80g, then the valve closes, and the same as the color. Once the batch has been weighed out, the contents of the weigh-pan are dispensed into a mixing chamber where they are blended. The resulting mixture exits the base of the mixing chamber into the processing machine. 
Gravimetric Batch Blender

Gravimetric Blender application

Now more and more customers are introducing gravimetric blender into their production for LED, auto parts, non-woven bag, film, bottles & containers, all injection parts, cables, and wire, etc. And the areas are expanding.  
Hereafter are some application cases for your reference:
1) 4-components gravimetric dosing system for drinking bottle production:

Material: HDPE, regrind, masterbatch.
Customer's blowing machine has two layers, and one layer uses mixture material of HDPE, regrind, and master batch, the other uses HDPE virgin.  

2)  5-components gravimetric dosing system for 3-layer extruder:
The customer has many sets of 3-layer extruders, and they make PP/PS sheet which will be made into disposable food containers. They use five materials, PP, PS, filler, etc., each layer uses the same recipe comprised of 5 materials, but they have up to 20 different recipes.  

To do the dosing and mixing job manually is a huge job for their workers, now they just need one worker to monitor the five silos and refill the materials.  

3) 6-components gravimetric blender on single-layer film blowing machine 

Customer uses LDPE, LLDPE, additive, filler, and other 2 materials for his film production, and before having this gravimetric blender, he mixed the 6 materials manually which was quite common around his area but slow and less accurate, but right now he loves the blender very much and considers to purchase more for his new plant.
Gravimetric Batch Blender

Gravimetric Blender Precautions

Cautions for Operation and Maintenance Personnel:

Before carrying out machine-related operations, the person who intends to operate and maintain the machine must read and understand the relevant contents of this operating manual, especially the safety-related parts.
The following safety instructions are particularly important to avoid personal injury and property damage:
1) Observe all safety and damage related information on the device.
2) Do not allow unauthorized persons to approach this device.
3) Before starting the device every time, make sure that no one is in the danger zone.
4) Please ensure that there are no tools, other equipment and objects in the workstation. Do not place tools or other objects on the device. Because vibration may cause them to fall off the device, causing personal injury and / or property damage.
5) Please keep the device and the workplace clean and tidy, and ensure that the particles are not scattered on the ground. This may cause staff to slip and be injured.
6) When cleaning or servicing the blender, wear work gloves. Work gloves will protect your hands and fingers from being broken.
7) When operating this machine, be sure to abide by the safety regulations of the local government.
Product alias:
Gravimetric Batch Blender
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Product name:Gravimetric Blender
Enterprise:Dongguan mechanical equipment Co., Ltd
Region:Dong guan
Telephone:+86 13669807274
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