Turnover hopper

What is Turnover hopper?

Turnover hopper focuses on dust control and production in the pharmaceutical, food, chemical and other industries, and uses physical sealing and airflow control technology to achieve "zero leakage" material transfer. The core configuration includes a feeding port, a storage bin and an efficient dust removal system, and is equipped with equipment such as a straight-line screen, a mixer, and a vacuum feeder to build a closed loop of the entire process from bag unpacking, screening, mixing to transportation. Customized design is supported, and the explosion-proof design is suitable for flammable and explosive scenes. Frequency conversion control and intelligent weighing achieve milligram-level accurate feeding.

Advantages of Turnover hopper

The dust-free feeding station has the core advantages of sealing, automation, and safety, which solves the multiple pain points of traditional feeding methods, such as serious dust pollution, low efficiency, and safety hazards.

Excellent dustproof performance: The closed design is combined with an efficient filtration system, and the dust control effect is significant. The dust concentration in the working environment can be controlled below 1mg/m³.

Material protection: Reduce the risk of external pollution, especially suitable for sterile or high-purity material processing, and reduce the probability of product contamination.

Continuous feeding: The feeding speed of a single device can reach 500-2000kg/h, supporting 24-hour continuous operation.

Accept a variety of materials: By adjusting parameters such as the frequency of the vibrating screen and the speed of the rotary valve, it can adapt to a variety of material forms such as powder, granules, and flakes.

Turnover hopper composition structure

The dust-free feeding station consists of a feeding port, a storage bin, a dust removal system, and a discharging conveying component, and is equipped with a control system to achieve closed feeding, dust recovery and precise transportation.

Support frame: Provides equipment stability, and some models are equipped with adjustable feet to adapt to different ground conditions.

Shell: Closed design to prevent dust leakage, and some equipment shells are removable for easy cleaning and maintenance.

Feeding port: The feeding port is the core part of the dust-free feeding station, ensuring that the material enters the system in a closed environment to avoid dust flying.

Sealing cover/feeding door: Pneumatic or manual opening and closing methods are used to ensure complete sealing during feeding.

Glove operation port (optional): Some feeding stations with high cleanliness requirements are equipped with glove box operation ports to achieve complete isolation of feeding.

Turnover hopper working principle

The dust-free feeding station uses physical sealing and airflow control technology to achieve "zero leakage" transfer of materials from packaging bags to production lines. Its core structure includes feeding port, storage bin, dust removal system and vibration auxiliary device. When working, the operator first fixes the bag to the feeding port, opens the package by automatic cutting knife or manual cutting, and the material falls into the storage bin under the action of gravity in a negative pressure environment; the built-in high-efficiency filter with a filtration accuracy of 0.3μm captures the dust generated by dumping, and cooperates with the reverse pulse spray system to clean the dust regularly to ensure the rapid operation of the filter element.

Model parameters

Model	Dust removal fan power (KW)	Motor power (KW)	Screen mesh	Dust filter specifications
TLZ-1	0.75	0.05	400 mesh or customized	Imported 0.5μm polyester film*1
TLZ-2	1.1	0.07		Imported 0.5μm polyester film*2
TLZ-3	1.5	0.12		Imported 0.5μm polyester film*4

Turnover hopper application scenarios

The dust-free feeding station has become the core equipment for solving dust pollution and cross-contamination problems in industrial production with its closed, automated and efficient design.

API feeding: When synthesizing APIs, powder materials such as active ingredients and excipients need to be put into the reactor. The closed system of the dust-free feeding station can effectively prevent the leakage of toxic and harmful dust, protect the safety of operators, avoid cross contamination, and ensure the purity of drugs.

Powdered food raw material processing: suitable for unpacking and conveying materials such as flour and powdered sugar. Its closed design can prevent pests and foreign matter from mixing in, meet the requirements of the HACCP system, and low-noise operation does not interfere with the production environment.

Seasoning and additive production: In the scene of adding trace ingredients such as flavors and pigments, the dust-free feeding station relies on frequency conversion transmission and high-precision weighing system to achieve milligram-level accurate feeding, ensure the stability of product flavor, and provide strong support for the quality control of seasoning and additive production. ​

Fine chemical raw material feeding: For materials such as pigments and dyes, the explosion-proof dust-free feeding station is equipped with an electrostatic grounding device and an explosion vent to reduce the risk of dust explosion, and the corrosion-resistant material is adapted to strong acid and alkali environments.

Plastic and rubber processing: In the feeding link before mixing materials such as resins and fillers, the dust-free feeding station can be directly connected to the high-speed mixer to reduce the exposure time of the material and prevent moisture absorption and agglomeration.​

Lithium battery material production: For the feeding of positive and negative materials such as lithium cobalt oxide and graphite, the dust-free feeding station is equipped with a demagnetization device to remove metal impurities, and the closed conveying prevents the oxidation of materials, thereby improving the battery energy density and cycle life.

Feed processing: In the feeding process of trace additives such as vitamins and minerals, the dust-free feeding station is directly connected to the mixer, which effectively reduces the stratification of additives and greatly improves the uniformity of feed.

What equipment can Turnover hopper be used with?

As a closed processing equipment for powder and granular materials, the dust-free feeding station usually needs to be used in conjunction with upstream and downstream equipment to form a complete material handling system.

Dust-free feeding station + straight screen: suitable for pharmaceutical, food, chemical and other scenes where raw materials need to be removed or graded. After the material is closed and fed into the dust-free feeding station, the straight screen is screened, and the qualified material enters the next process.

Dust-free feeding station + mixer: plays a role in the mixing process of multiple materials such as pharmaceuticals, food, and chemicals. Different raw materials are fed into the dust-free feeding station separately, and are evenly mixed by the ribbon mixer, V-type mixer, etc., and the materials continue to be transported after mixing.

Dust-free feeding station + vacuum feeder: used for scenes where materials are transported to equipment far away or high, such as feeding to reactors and silos. After the materials are fed in a closed manner, the vacuum feeder completes the conveying by negative pressure suction, and the filter is automatically cleaned.

Dust-free feeding station + conveyor: Meet the continuous and stable feeding needs of industries such as food and chemicals. After the materials are fed, they are transported by screw conveyors (powders) or belt conveyors (granules), and can be quantitatively fed with weighing systems.

Dust-free feeding station + packaging machine: Suitable for automatic packaging of finished products in industries such as chemicals, food, and medicine. After the materials are fed, they are screened, mixed, and other processes, and then enter the valve bag packaging machine and ton bag packaging machine for automatic weighing, filling, and sealing, and the finished products continue to circulate.

How to choose a Turnover hopper equipment combination suitable for a specific scenario?

To select a dust-free feeding station equipment combination, you need to first clarify the material characteristics, and then combine the production process with industry standards.

Pharmaceutical industry: In the raw material processing, mixing and packaging links, the "dust-free feeding station → straight screen → vacuum feeder → V-type mixer → screw conveyor → valve bag packaging machine" combination is used. The whole process is closed and effectively reduces the risk of cross contamination. ​

Food industry: For the batching, mixing, conveying and packaging processes, the "dust-free feeding station → screw mixer → belt conveyor → automatic packaging machine" equipment combination is selected. Continuous production is achieved, efficiency is greatly improved, and food hygiene and safety requirements are met. ​

Chemical industry: For powder feeding, screening, conveying and ton bag packaging, the explosion-proof combination of "dust-free feeding station → vibrating screen → vacuum feeder → ton bag packaging machine" is the first choice. This combination is designed for flammable and explosive dust environments and can effectively avoid safety risks.​

Turnover hopper manufacturer

Dahan Machinery Technology Co., Ltd. is a manufacturer specializing in the production of dust-free feeding stations, providing standard machines and customized solutions. The products are made of 304/316L stainless steel and equipped with a filtration system, with a dust control rate of more than 99.99%. We are good at customizing equipment for customers, and can seamlessly connect with inline screens, mixers, vacuum loaders, conveyors, packaging machines and other equipment to create an automated and closed complete production line. The company has one-stop service capabilities from design to after-sales, and is committed to providing efficient and clean material handling solutions for the pharmaceutical, food, chemical and other industries to help companies improve production efficiency and optimize the working environment.

In traditional feeding methods, manual bag unpacking and material transfer are prone to cause dust flying, which not only endangers the health of operators, but also may cause product impurities to exceed the standard and equipment failures frequently. Turnover hopper provides modern industry with a full-process dust-free solution from feeding to turnover through closed and automated design.