Gravimetric blender_All information about the gravimetri batch blender

What is a Gravimetric blender

Gravimetric blender are used in the injection and extrusion industries. This is an automatic equipment that can automatically weigh and automatically mix various raw materials that need to be mixed in precise proportions. This is a mechanical device that integrates weighing, metering and mixing functions. The Gravimetric batch blender will weigh the raw materials proportionally by weighing and measuring the degree, and then enter the mixing tank for raw material processing. High-speed impact and dispersion can achieve rapid mixing, dispersion and refinement of functional and efficient equipment. The measurement can be accurate to particles, and the mixing accuracy can be as high as ±0.1%. One equipment adopts PLC controller, which can mix multiple raw materials at the same time after accurate weighing and mixing. It has advanced batching algorithm, excellent production performance, automatic alarm and error correction function, stable operation, safe and reliable comprehensive technical characteristics. Technology to solve manual weighing errors and uneven mixing in production.
Especially in the medical and environmental protection industries, the machinery will fully adopt food stainless steel materials and fully enclosed feeding and discharging to avoid external pollution.

Composition of Gravimetric blender：

The main components of the Gravimetric blender include hoppers, racks, weighing instruments, mixing barrels, PLC consoles, electric boxes, motors and other components.

Schematic diagram of Gravimetric blender

1. Upper hopper, 2. Display, 3. Unloading cylinder, 4. Controller, 5. Mixing box, 6. Observation window, 7. Lowering cylinder
Put the raw materials to be produced into the hopper, and then weigh or measure the raw materials according to the parameters set by the PLC console. Then the raw materials enter the mixing tank. Set the mixing time and operating speed parameters in the console, then control the complete mixing, and then execute it by the PLC. Automatic discharge speed, complete weighing and mixing

	Gravimetric blender Upper hopper:This is the hopper of the Gravimetric blender, installed on the top of the equipment. Used to store the raw materials to be mixed. And can be equipped with multiple hoppers. Electronic funnel can be equipped as required
	Gravimetric blender Screw Weight Loss Scale:Single screw weight loss scale is an automatic weighing system for Gravimetric blender, suitable for weighing each raw material of the mixer. Between the equipment, hopper and mixing barrel, various raw materials enter the hopper. When the raw materials enter the mixing barrel, the single-screw weightlessness scale will automatically weigh or measure the raw materials. Own metering system and PLC control system can perform more accurate weighing, calculation or measurement.
	The mixing system is a weighing and measuring machine for raw materials in a gravimetric blender. The mixing barrel is closely connected with the hopper. This is a special mixing barrel that can mix powder and granules, powder and powder, and can be connected to PLC to control the mixing speed, time, and discharge and conveying speed.
	Electric box: This electric box is the brain of the Gravimetric blender, which controls the energy required for the operation of all components. The main switch that controls input and output devices; it is assembled from multiple components (such as integrated circuits and relays).
	gravimetric blender PLC control panel: This is the mind and brain of the Gravimetric blender. It controls the operation and stop of all functions of the machine, and has functions such as automatic diagnosis, automatic warning, automatic error correction and recovery.
	Gravimetric blender Bracket: This is the foot of the Gravimetric blender, which supports all the weight of the machine, and the machine is stable during operation, and the support is easy to move;
	Gravimetric blender discharge barrel:The unloading barrel is installed under the mixing barrel of the Gravimetric blender and is used to store the raw materials mixed in proportion.

Working principle of Gravimetric blender：

How Gravimetric blender works

The Gravimetric blender relates to an upper hopper, a mixing box, a lower hopper and a controller connected in sequence, and relates to the technical field of feeding equipment. The upper hopper is divided into multiple sub-hoppers by part. In the mixing box, a cylinder assembly box, a weighing hopper and a mixing hopper are sequentially installed below the discharge port of the hopper. The drum assembly box is equipped with multiple unloading drums. The connecting rod of the blanking cylinder is equipped with a pull plate. There is a weighing device under the plate, the mixing hopper is equipped with a horizontally driven horizontal screw, the discharge port of the mixing hopper is equipped with a timer and a discharge valve, and the controller is connected with multiple discharging cylinders. Electrically connect the weighing device, timer, motor and discharge valve to receive information from each weighing device, control the action of the corresponding unloading cylinder, open or close the pull plate, and receive timer information to control the action of the motor and the discharge valve Turn on or off. The device provided by the utility model can automatically feed materials according to the weight ratio, and the mixing is relatively uniform.
Add a variety of raw materials to multiple hoppers, and set the corresponding parameters and mixing time of each raw material through the functions on the PLC control panel. After setting the PLC parameters, the corresponding functions will be activated. After the weighing and mixing are completed, there is a timer at the discharge port, and you can choose to control the discharge speed!

Features of Gravimetric blender:

1. Modular and detachable structure design, saving space and easy to clean;
2. Use a dedicated weighing controller to ensure reliable performance and easy maintenance;
3. The automatic control calculation method, self-optimization and automatic adjustment function are adopted to ensure the accuracy of the ingredients (automatic correction and adjustment after each weighing. All materials are uniformly mixed after the gravity measurement, and the density can be strictly controlled). ;
4. Six kinds of raw materials can be processed at the same time;
5. Color graphic display, touch screen operation;
6. The weighing and volume mixing method increases the number of ingredients;
7. With formula storage function, 20 groups of formulas can be stored;
8. Hierarchical security password control and alarm history record function;
9. The USB data export function is optional, which is used to save the ratio data to facilitate production management;
10. It can be installed directly on the machine, or it can be installed next to the machine together with an optional tripod.
11.And equipped with automatic early warning system and automatic error correction function! If there is a material interruption during the batching of multiple raw materials, the equipment will automatically start the warning and stop the mechanical operation, the warning will sound and the warning light will flash.
12.When there is a problem with the program in production, the equipment will stop running, the warning light will sound and flash, click on the control panel of the equipment console to set-error correction-error correction success-end warning

Model and parameters of Gravimetric blender:

Model	HGB-50	100	200	400	600	800	1200	2000	2500	3000
Qty of group number	4-8
Mixing capacity(kg/hr)	50	100	200	400	600	800	1200	2000	2500	3000
Batch weight(kg)	0.6	1.2	2.2	4.5	6	8	12	20	25	30
Main material range(%)	5-100
Additive mixing range(%)	0.5-10
Main hopper volume(L)	18	25	32	45	70	100	130	160	180	230
Mixing barrel volume(L)	6	6	20	20	40	40	80	80	100	180
Power supply(v/hz)	1φ	1φ	1φ	1φ	1φ	1φ	3φ	3φ	3φ	3φ
	230/50	230/50	230/50	230/50	230/50	230/50	400/50	400/50	400/50	400/50
Total power(kw)	0.12	0.12	0.25	0.25	0.55	0.55	1.5	1.5	1.5	3
Compressed air(kgf/cm2)	6-8
Max noise level(dB)	＜75

Application and design scheme of Gravimetric blender:

The Gravimetric blender is suitable for mixing powder or granular materials in chemical, food, pharmaceutical, feed, ceramics, metallurgy and other industries.

Application of Gravimetric blender in plastic granule

Input each color masterbatch into each hopper on the top of the weighing mixer, set the parameters in the console (control panel), and weigh and measure each color masterbatch to be accurate to the particle size and set the mixing time. Stirring is carried out, and then the materials are automatically output, and the weighing and mixing are completed. Will be automatically entered into another production device! These weighing, batching and mixing tasks will be completed automatically, calculated automatically by the computer, with an accuracy value of 0.01 or particles

Application of Gravimetric blender Ceramic Enterprise

Application of Gravimetric blender in ceramic industry. The main raw materials of ceramics are powder and granules. We use multiple hoppers, powder gauges and particle gauges to better solve the batching problem. When mixing, we use a special mixing barrel to mix the agglomerated powder evenly with the particles. The mixing barrel mixes the powder and the particles together to make the ratio and mixing more uniform; due to the large amount of powder used There may be four types of raw materials and powders in the workshop. We will use the separation method of Gravimetric blender and workshop, and adopt pipeline transportation to ensure that the workshop and equipment are not polluted by powder, while extending the service life of the Gravimetric blender and the environmental protection of the workshop ,product quality.

Application of Gravimetric blender in injection molding industry

Application of Gravimetric blender in injection molding industry. The main plastic powders and granules in the injection molding industry. We use multiple hoppers, powder meter or particle meter to better solve the batching problem. When mixing, we use a special mixing barrel to mix plastic particles or plastic powder. The mixing barrel mixes the powder or granules together to make the ratio and mixing more uniform. The corresponding sealing system is formulated to ensure that the workshop and equipment are not polluted by dust, and at the same time extend the service life of the Gravimetric blender and the environmental protection and product quality of the workshop.

Application of Gravimetric blender in extrusion industry

Application of Gravimetric blender in extrusion industry. The main plastic powder and granule in the extrusion industry. In the production workshop of the enterprise, we use more reasonable equipment installation and equipment connection, and adopt "Internet of Things" and "4.0 Industry" design solutions to save costs and save factory space. We use multiple hoppers, powder meters or granules in one machine. The instrument can better solve the problem of uniform ingredients. A multi-distribution sealed distribution method is adopted to ensure that the workshop and equipment are not contaminated by dust, and at the same time extend the service life of the weighing mixer and the environmental protection and product quality of the workshop.

The application of the Gravimetric blender is closely related to the design plan, and the design plan is inseparable from the company's factory structure and raw materials, as well as the company's requirements! Only a reasonable understanding of the company's application of raw materials combined with the company's factory structure can design a good solution, a set of good design solutions to meet the company's production requirements, reasonable application space and cost savings.

Operating instructions for Gravimetric blender:

Gravimetric blender operation control panel

1. First plug in the power, then turn on the switch, the machine will start.
2. If the discharge port is not in the desired position, you must gently push the gravity agitator until the discharge port stops at the desired position.
3. Before starting the machine, please check whether the electrical equipment is normal and whether the mixing cylinder cover is tightly closed.
4. After starting the machine, check the equipment console to see if there is any abnormality, you can use the automatic error correction function,
5. Proportioning design parameters for each hopper raw material, (Figure 1, 2, 3, 4, 5, 6)
6. Design parameters for the feed rate of raw materials in each hopper,
7. Carry out the design parameters for the mixing time.
8. Design parameters for the discharging speed of the stirred mixture.
9. The controller is equipped with a standard USB2.0 interface, which can save the mixing ratio data to the U disk, which is convenient for production quality control.
10. Volume mixing measurement method increases the amount of ingredients; with formula storage function, it can store more than 100 groups of formulas at most. Function of hierarchical security code control and alarm history record.
11. When the warning light flashes, please check whether the raw materials have been used up, or enter the system console panel to check whether there is a problem, and correct it in time. (Automatic error correction function)

Precautions for Gravimetric blender:

1. Before starting the weighing mixer equipment, please check the power supply and whether there is any debris in the hopper. When mixing different raw materials, check whether there are mixed raw materials in the hopper, mixing barrel and unloading barrel.
2. When the machine needs to stop running, please close the program in the PLC console, and then turn off the power supply of the equipment!
3. Clean the machine and its surroundings as required to ensure safety during operation and prolong the service life of the weighing mixture.
4. The console of the weighing mixer does not light up, please check the power supply and power cord;
5. If the raw materials are not evenly weighed, please check whether the raw materials have been connected to the PLC control panel and the screw weightlessness scale, whether the corresponding parameter settings are correct, mixing time, mixing speed, whether the raw materials are weighed and whether the motor is normal;
6. If the funnel is not discharged, please check if the funnel is blocked;
7. The unloading speed is not fast, please check the time set by the PLC console;
8. If you are not a professional related mechanical maintenance personnel, please do not disassemble the machine for maintenance by yourself.
9. For more information, you can consult manufacturers and suppliers of weighing mixers for faster troubleshooting.

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