Producing high-quality extruded feed is inseparable from formulation and an integrated process, which places higher demands on equipment configuration. DEXIYA continually upgrades and refines its equipment packages and configurations, enabling premium dry cat, dog and fish food on a high-capacity line.

Overview of the DXY premium dry pet food line, 1-1.5 t/h - the main process of the production line:

1. Raw material intake and cleaning section:

1) Raw material sources:

- Granular raw materials: whole grains such as wheat, rice and corn;

- Powdered raw materials: meat-and-bone meal, fish meal, etc.

2) Main tasks: iron and impurity removal.

3) Main process:

Granular raw materials: feeding - lifting - primary sieving and cleaning (large impurities removed) - permanent magnet drum (iron removal) - into the grinding chamber;

Powdered raw materials: feeding - lifting - powder sieving (impurities removed) - permanent magnet drum (iron removal) - into the dosing silo.

2. Ingredient dosing and mixing section:

1) Number of ingredients: set according to the customer's recipe and raw materials, from 7-8 in simple recipes to 25 in complex ones.

2) Process: from raw material dosing to the buffer bin the whole process is an automated closed loop controlled by computer.

3. Raw material grinding section:

1) Main task: ensuring powder fineness.

2) Main equipment: hammer mill

This is the most common equipment in the grinding section. It uses high-speed rotating hammers to strike the material and screens with various openings to control fineness. For fine pet food, especially fish feed requiring even higher fineness, an ultra-fine grinder can be added after this stage for secondary grinding.

4. Secondary raw material mixing section:

1) Main task and function:

To thoroughly mix all powdered raw materials such as grain and meat meal processed separately earlier, ensuring a higher degree of uniformity. A spray system can be fitted to add a small amount of oil or liquid additives to improve final product quality.

2) Main equipment: high-efficiency twin-shaft paddle mixer.

This mixer offers a short mixing cycle, high efficiency and low residue, meeting the requirements of large-scale continuous production.

5. Pellet extrusion section:

1) Main task: conditioning and extrusion puffing.

2) Process effects and high standards:

- Producing different animal feeds: by changing the formulation, screws and so on, the twin-screw extruder can produce cat, dog and fish feed (floating, sinking and slow-sinking).

- Product shape and flavour: by changing the die it produces pellets of various shapes such as round, bone-shaped and heart-shaped, and adjusts their size. At the same time the high-temperature, high-pressure process gives pellets a unique aroma and removes anti-nutritional substances and harmful microorganisms, improving feed hygiene.

6. Feed drying section:

1) Main equipment: multi-deck reciprocating dryer; heat sources: electricity, gas and steam.

2) Features: wet pellets enter the top deck, move forward on a stainless steel belt and pass to the next deck for return transport, repeating this and forming an S-shaped path. This design greatly increases drying time within a limited footprint.

3) Working principle: hot air generated by electricity, gas or steam is forced to circulate inside, penetrates the pellet layer and removes moisture. At the same time the dehumidification system removes hot humid air and replaces it with dry air, creating a dynamic balance. Customers seeking higher production efficiency and more uniform drying and quality should consider tunnel microwave equipment, because microwave drying works from the inside out, giving more uniform and stable drying.

DXY dryer range: www.cndexiya.ru/web/products/DRYER/

7. Liquid and dry additive coating section:

1) Main task: multi-layer coating, each layer must impregnate the product with flavour. Coating quality depends on effective, even coverage of every pellet surface. The standard sequence is usually: oil spraying - liquid flavour spraying - powdering.

2) Main equipment and processes: spray mixer and vacuum coater.

3) Advantages of vacuum oil coating:

- High fat content: allows 20-30% or even more fat, far above atmospheric spraying;

- Better pellet quality and longer shelf life: the liquid is absorbed into the pellets rather than merely sticking to the surface, giving a drier product and less oxidation;

- Better nutrient absorption: fat penetrates the inner pores, easing digestion and absorption by animals.

Vacuum coating suits high-quality feed, especially fish feed. Because the fat penetrates the pellets, it is less likely to dissolve in water, so water pollution after feeding is lower. Fish can consume whole, nutrient-rich pellets for longer, reducing feed losses.

DEXIYA vacuum coater overview:

www.cndexiya.ru/vacuum-spraying-equipment/Fish-feed-vacuum-spraying-machine.html 

8. Finished feed packaging section:

1) Cooling before packaging - the final step of the pet food line. Its main task is to cool the dry, flavoured pellets quickly and evenly almost to room temperature, preparing them for weighing and packaging.

2) Packaging is the final stage of the pet food line. Its main task is to pack the cooled finished pellets accurately, efficiently and hygienically into final retail packaging to the specified requirements. This highly automated process is crucial not only for product appearance but also for quality, shelf life and final delivery to consumers.

3) Main equipment: semi-automatic packaging machine and automatic multi-head combination weigher and packer.

DEXIYA packaging machine options:

www.cndexiya.ru/web/products/DRYER/Auto-packaging-machine.html 

Electrical control system: commands are issued from a computer or touch screen in the central control cabinet, and the PLC controls the distribution cabinet via a bus for fully automated production. It combines power distribution, control and protection functions. Individual motors can be controlled independently, simplifying maintenance. Remote monitoring, parameter setting and advanced fault diagnostics are also possible.

DEXIYA quotes and builds equipment to order and takes responsibility for installation supervision, commissioning and start-up. Video links of the 1.5 t/h premium dry dog, cat and fish food line installation:

rutube.ru/shorts/26461a5dae0c92710141dce6b64ca07e/;  www.youtube.com/shorts/VWCjfpGhfx8

We are ready to discuss all the details with you, help solve your current issues and provide suitable custom equipment for you.

Shandong DEXIYA Machinery Equipment Co.,Ltd

www.cndexiya.ru   

www.dxyextruder.ru   

Email: dxymachinery_manager@mail.ru

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