Hopper Loader

1.The ECO hopper adopts negative pressure pulse dust catch bag;bottom feeding mouth adopts the form of telescopic chute. Specifications and conditions of the dust -catching bag and the chute are chosen according to the buyer's working environment and are suitable for Marine environment.

2.The seller shall notify the buyer to participate in the factory test in advanced of 10 days .

3.The manufacturer shall guarantee the products for a period of 12 months from the handover at site or 14 months from the date of delivery.

4.This Agreement shall come into force only after the relevant sales contract have entered into force

The Hopper Loader is a crucial automation device in the plastics processing industry, primarily used for the efficient and contamination-free vacuum conveying of plastic pellets, powders, and other raw materials into drying hoppers, mixers, or processing equipment like injection molding machines and extruders. It completely replaces traditional manual loading methods and serves as a core component for achieving intelligent and continuous production in workshops, significantly enhancing production efficiency, ensuring raw material cleanliness, and reducing labor intensity. For corporate users selecting efficient plastic pellet conveying equipment or seeking cost-saving automatic feeding solutions for injection molding machines, a deep understanding of its product features and advantages is essential.

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I.Product Features

1.Efficient Vacuum Conveying: The equipment utilizes a powerful vacuum pump for fast and stable material suction and conveying. Conveying capacity ranges widely, from 200 kg to over 650 kg per hour depending on the model, with a horizontal conveying distance of up to 20 meters, meeting the needs of production lines of various scales.

2. Intelligent Microcomputer Control: Equipped with a user-friendly button control panel and LCD screen, and a built-in powerful microprocessor for easy setting and control of all conveying parameters. Some advanced models support RS485 communication interface (Modbus protocol), facilitating integration into the factory's central control system for remote monitoring and data acquisition.

3. Stable and Reliable Core Components: The core power unit typically uses high-quality induction motors or specific brand blowers (e.g., AMETEK), ensuring stability and durability during prolonged continuous operation. Hopper capacity is commonly 7.5 liters and can be customized as needed.

4. Comprehensive Safety Protection: The equipment integrates safety features such as overload protection and material shortage alarm. The system automatically stops and triggers an alarm in case of conveyor pipe blockage or material depletion in the supply bin, effectively protecting the motor and preventing production interruptions.

5. Flexible Configuration and Customization: Offers various power options (from 1.1kW and higher) and voltages (single-phase or three-phase) to suit different working conditions. Supports one-to-multiple (e.g., one-to-three) central feeding solutions and accepts brand logo customization.

II.Product Advantages

1.Significantly Improves Production Efficiency and Continuity:Achieves 24/7 uninterrupted automatic feeding to ensure main production equipment operates at full capacity, maximizing equipment utilization and output.

2.Excellent Energy Saving and Cost-Effectiveness: Prevents material waste through precise automatic control and reduces unit energy consumption via efficient conveying, significantly lowering long-term unit production costs.

3.Ensures Product Quality and Cleanliness: The fully enclosed pipeline conveying system isolates contaminants like dust and moisture, providing clean raw materials for producing high-quality optical parts and food packaging.

4.Optimizes Workshop Environment and Safety Management: Eliminates dust from manual handling to maintain workshop cleanliness per environmental standards, while reducing labor intensity and injury risks.

5.Plug-and-Play and Easy Maintenance: Features compact plug-and-play installation for quick production line integration, with modular design, a one-year warranty, and overseas technical support for convenient maintenance.

III.Surface treatment

1.The coated surface of possible dirt, grease, moisture, and debris removal of welding after other machining operations, appear on the surface of the material surface or coating, splash, welding slag, weld tumor or other rough bump, partial to brush paint, all for the paint.

2.Paint thickness and layers: total paint film thickness 300μm, primer thickness 100μm, intermediate paint thickness 100μm, top paint thickness 100μm.

3.Color: Customization (color number is consistent with existing equipment at the dock)

IV.Nameplate

1. Before delivery to the owner, the manufacturer shall install the following nameplates

(1)Limited bearing weight
(2)dead weight
(3)No.
(4)Production date
(5)Hopper capacity

The style and materials are approved by the owners and the sign is fixed in a prominent position so that it can be clearly seen on the ground.

2.Before delivery to the owner, the manufacturer shall set up logos and slogans according to the requirements of the owner, and the nameplates such as equipment name, manufacturing number and completion date shall be fixed in eye-catching positions.

3.All nameplates shall be written in English.

V.Material

1.The materials used for the production and installation of dust proof ECO hoppers are from qualified manufacturers and belong to the high-quality materials that meet the requirements of the recognized specifications and standards. They shall provide the manufacturer's quality guarantee certificate, test report, inspection record and certificate of conformity.

2.The structural design of the main bearing member of the dust proof ECO hopper should strive for simplicity, clear force, direct force transmission, and reduce the impact of stress concentration (the thickness of the steel plate used is greater than or equal to 10mm)；
The thickness of the steel plate of the secondary member and the thickness of the web of the section steel is greater than or equal to 6mm；
The thickness of the steel plate of the auxiliary member is greater than or equal to 4mm, and the thickness of the steel plate of the duct and bellows 2 mm or higher.

3.The thickness of the main bearing member is no less than 8 mm and the material is Q355B. Or other specifications and materials of the same strength and above. Dust removal duct adopts steel plate with thickness greater than 2mm; Flange using 6mm thick steel plate.

4.The material used for dustproof ECO hopper is not lower than the requirements of the design drawings, and the wear part is not lower than HARDOX400 or the same level of imported wear- resistant plate.

5.All railings are made of seamless steel tube.

6.Discharge gate is designed according to 500T /h flow rate. All materials used meet relevant standards and specifications.

VI.Application

Hopper Loaders are widely used in all scenarios requiring automatic conveying of plastic raw materials and are an ideal choice for building modern plastic processing workshops. Specific applications include:

1.Injection Molding: Automatically feeding pelletized raw materials to injection molding machines.

2.Extrusion: Continuously feeding material into extruder hoppers.

3.Blow Molding: Ensuring raw material supply for hollow molding equipment.

4.Raw Material Drying and Mixing: Conveying materials to drying hoppers or various volumetric and gravimetric blenders.

5.Central Feeding Systems: Serving as a core unit to build fully automated intelligent conveying networks from storage silos to multiple production machines.

VII.Information Required for Purchase

To ensure recommending or customizing the most suitable equipment for you, please prepare and provide the following information when inquiring or purchasing:

1.Material Information: Type of material to be conveyed (e.g., ABS, PP, PE pellets, or regrind), shape, and characteristics.

2.Capacity Requirements: Desired conveying rate (kg/h) and the maximum conveying distance and lift height from the material container to the machine.

3.Equipment Configuration: Number of target machines to connect (e.g., one-to-one or one-to-many) and the interface details of the target equipment (drying hopper, blender, injection molding machine, etc.).

4.Power and Environment: Available power supply in the workshop (voltage and phase, e.g., 220V single-phase or 380V three-phase) and any installation space constraints.

5.Special Requirements: Need for specific communication interfaces (e.g., Modbus), explosion-proof certification, or other custom functions.

VIII. Design and manufacture of ECO hopper

1.The hoppers are designed and satisfactory to handle bulk clinker/cement and sulphur with high performance of dust control.

2.The hopper cone inside aer with SS-liner to resist corrosion and rust, i.e to fit the discharge of clinker, sulphur, & fertilizer.

3.Each hopper shall have a minimum discharging rate of 500 tons per hour,

4.The dust system is of jet purse type.

5.The discharge valve system is electro-hydraulic type;

6.The height and width of the hopper shall allow the truck of 3.7m high to enter and leave the hopper

7.The dust removal rate of the upper bucket of the ECO hopper is ≥95%, and the dust concentration of the exhaust port is ≤30mg/m3.

8.Filter bag: the material brand adopts anti-static, easy to clear ash, waterproof, oil-proof fabric.

9.The loading port of the ECO hopper must be provided with a telescopic chute, which must be flexible and reliable, and set with a dust removal structure.

10.The ECO hopper structure can meet the strength requirements of 50 tons of materials stored internally.

11.The ECO hopper must be equipped with working hydraulic support legs. The hydraulic support legs must be automatically locked without any settlement during operation.

12.The enclosed grille is used in the top hopper cone.

13.The upper part of the ECO hopper is arranged as few as possible to facilitate dust cleaning.

14.The regulating wheel bearing of the doumen is easy to replace, and the bearing can be easily replaced without removing the doumen and telescopic chute, and the refueling port is added on the shaft.

15.The tubing of hydraulic system is easy to repair and replace, and the hydraulic system can increase the manual function.

16.The control room or control cabinet is made of stainless steel 304 or above, and the protection grade reaches IP55 or above.

17.The telescopic chute can conveniently adjust the length of the wire rope to avoid that the telescopic chute is not in the same horizontal plane.

18.Loading telescopic chute have a separate dust removal structure, and the dust removal structure should be convenient for maintenance and replacement of parts.

19.An access door is added on the upper part of the ECO hopper for easy access to replace parts inside the ECO hopper. Access door can easily enter the ECO hopper, to avoid the occurrence of accidents.

20.The access door is arranged around the upper wall of the ECO hopper to facilitate access to the lower part of the top grille inside the ECO hopper and observe whether the material is accumulated in the ECO hopper.

21.The body of the ECO hopper has enough stiffness, and the material of the lower leg of the ECO hopper is no less than Q355B material, so as to avoid the deformation of the steel structure in the
working or walking process of the ECO hopper.

22.When the ECO hopper is moved, it is pulled by forklift or loader (including push and pull), and the position of the tow rod is provided with rotary support.

23.A ladder for maintenance workers to climb up and down is set in the ECO hopper, which is made of φ =20mm round steel and arranged on one side of the corridor.

24.The rail of the corridor of the ECO hopper is not higher than the bucket mouth, and the corridor width is not less than 600mm.

IX.Case

Material:Coal
Holding Capacity:120t
Unloading capacity:400-800t/h
Volume:40m3
Move Mounted:Tyre
Bulk density:0.7-1.5t/m³
Hopper weight:60t
Total air flow:55200m³/h
Total fitter area:460㎡
Max. Working height:118m
4 Sets of Wheels
4 Sets of 10ton manual jack
1 Set of electric actuator
1 Set of Driving room
2 Sets of 1.5Kw vibrator
1 Set of 45Kw dust catcher
1 Set of Equipment control combine and cable

Option 1
Self Walking System

Option 2
Continuous weighing system
(Scale)

2 Sets of 15Kw drive reducer motor
1 Set of Weighing system
1 Set of feeding open & close valve

X.FAQ

Q1: Can the Hopper Loader handle regrind or powders?

A1:Yes, most standard models can process virgin pellets and recycled pellets. For lightweight, dusty powders or flakes, it is recommended to choose specially designed dust-proof or auger-type loaders. Inform the supplier of the specific material properties to ensure conveying efficiency and prevent blockages.

Q2: Can one automatic feeder supply multiple injection molding machines simultaneously?

A2: Yes. This requires configuring a multi-station or central feeding type Hopper Loader. Using a main pipeline with multiple diverting valves, one host unit can supply material alternately or simultaneously to multiple points (e.g., 2-4 injection molding machines), offering an economical solution for building an efficient central feeding system.

Q3. Is the equipment installation complex? Does it require modifying the existing production line?

A3: Installation is usually straightforward. The equipment is typically shipped as a whole unit or large modules. You mainly need to place it between the material container and the processing machine, then connect the suction lance, conveying pipes (common diameters 38/51 mm), and power supply. It is a seamless addition to existing production lines, generally requiring no complex modifications.

Q4: How is the stability and reliability of the equipment operation ensured?

A4: Choosing models with safety features like overload protection, material shortage alarm, and motor overheat protection is crucial. Furthermore, the brand and quality of core components like the motor and vacuum pump are key. When purchasing, you can ask the supplier for factory test reports and videos, and confirm the details of the warranty period (typically 1 year) and after-sales technical support.

Q5: Compared to manual loading, what is the approximate payback period for the investment?

A5: The payback period depends on your production volume and labor costs. Typically, through saving dedicated loading personnel, reducing material waste, and improving equipment utilization, the investment can be recouped within several months to two years. The indirect benefits from consistent quality and increased production capacity brought by automation are more long-lasting.

Q6: If a malfunction occurs after purchase, how can I get maintenance support?

A6: A reliable supplier will provide clear after-sales policies. Before purchasing, please confirm: whether overseas engineer service is provided, the scope of free replacement parts during the warranty period, and if there is a convenient local spare parts inventory. Keep the equipment model and serial number for quick access to technical support.