Mixers for Dog Food Production adopts a unique dual-shaft paddle design to ensure that all kinds of raw materials are fully mixed. It is made of food-grade 304 stainless steel, equipped with a 15-45kW variable frequency motor, a mixing capacity of 200-2000kg/batch, and a mixing uniformity of more than 98%. The mixing time for each batch only takes 3-8 minutes. Equipped with a PLC intelligent control system, it can realize automated production and meet HACCP food safety certification standards.
Modern professional dog food mixers have many outstanding features.
Food-grade material: All contact parts are made of 304 or 316L stainless steel, which meets food hygiene standards.
Rapid mixing system: adopts a unique dual-shaft paddle design, and the mixing uniformity can reach more than 98%.
Intelligent control system: equipped with PLC and touch screen operation interface, which can store a variety of formula parameters.
Low residue design: special inner wall treatment and discharging mechanism, the residue rate is controlled below 0.3%.
Safety protection: meets CE safety standards and is equipped with multiple protection devices.
When dog food raw materials such as meat, grains, soybean meal, oil, vitamin premixes, etc. are put into the mixer according to the formula ratio, the stirring blades start to rotate at high speed. Taking the dual-axis weightless mixer as an example, the blades on the two stirring shafts make the materials form a full range of movement in the cylinder during the rotation process. On the one hand, the material reciprocates along the axial direction under the push of the blades to achieve the exchange of materials at different positions; on the other hand, under the action of centrifugal force and gravity, the material rolls and diffuses in the radial direction, so that raw materials of different densities and particle sizes are fully interlaced and blended. For raw materials containing oil, the mixer sprays the oil evenly on the surface of the material through a specially designed spray device, and the stirring blades continue to work, so that the oil quickly penetrates into the material, ensuring that each grain of dog food raw material can be evenly coated with oil.
In the modern dog food production line, the mixer is the core hub that connects the upper and lower parts, and builds a bridge between the raw material pretreatment and the molding process.
Preliminary mixing of dry raw materials: In the raw material pretreatment stage, dry raw materials such as grains (such as corn, wheat), flour, and soybean meal are first crushed and screened before entering the mixer. At this time, the mixer quickly disrupts and reorganizes dry raw materials of different particle sizes and densities through the bidirectional convection movement of the spiral ribbon blades.
Uniform addition of liquid raw materials: After the preliminary mixing of dry raw materials is completed, the mixer starts the liquid addition process. For liquid raw materials such as oil and meat slurry, the equipment is equipped with a quantitative spray system or pipeline conveying device to spray or inject the liquid evenly into the cylinder. Taking the addition of oil as an example, the high-precision metering pump sprays the oil into the raw materials being stirred in the form of mist according to the formula setting. At the same time, the high-speed rotating blades generate strong vortices, so that the oil instantly penetrates and wraps each grain of dry raw material, ensuring the uniform distribution of oil in the dog food.
Accurate distribution of trace additives: The mixer rotates at high speed through a special plow blade, generating a strong shear force, which instantly breaks up the additives and spreads them to the entire material system.
Moderate conditioning of raw materials: During the mixing process, some mixers can also perform moderate conditioning of raw materials. For high-fiber raw materials, an appropriate amount of steam is introduced through the built-in steam pipe to increase the humidity and temperature of the raw materials, soften the fiber structure, and improve the plasticity of the raw materials; for raw materials that are easy to agglomerate, the mixer can adjust the stirring speed and blade angle.
In the dog food production process, the mixer can be linked with a variety of equipment to form an efficient automated production line to ensure the smoothness of the entire process from raw material pretreatment to finished product packaging.
Crusher: Hammer type, roller type and other crushers are configured at the front end of the mixer, which can crush raw materials such as corn, grains, bones, etc. to 80-120 meshes to meet the mixer's requirements for material particle size.
Screening machine: Screening machines such as vibrating screens and flat rotary screens are connected after the crusher to remove over-coarse or over-fine particles to ensure that the raw materials entering the mixer have uniform particle size. The standard particle size raw materials screened out enter the mixer, and the coarse particles return to the grinder for reprocessing, forming a closed-loop process.
Extrusion puffing machine: The mixed raw materials are transported to the extrusion puffing machine by a screw conveyor, and extruded under a high temperature of 120-160℃ and a high pressure of 5-20MPa to form dog food particles in specific shapes such as round and bone shapes.
Automatic packaging machine: The finished dog food can be quantitatively packaged through a bag-feeding or three-side sealing packaging machine, supporting 1-10kg bags or small cans of pet snacks. The evenly mixed dog food particles can be directly put on the market after packaging, and the packaging speed can reach 30-60 bags/minute (depending on the specifications).
When purchasing a mixer for dog food production, it is necessary to comprehensively consider the following key needs.
Capacity matching: When purchasing a mixer for dog food production, the equipment capacity should first be determined according to the production scale of the enterprise. Small enterprises (200-500kg/batch) are suitable for laboratories or start-up brands, medium-sized enterprises (500-1500kg/batch) meet regional production needs, and large enterprises (1500-3000kg/batch) require industrial mass production equipment. At the same time, the connection between production rhythm and previous and subsequent processes should be considered. If necessary, a dual-machine parallel or continuous mixing system should be selected.
Material type adaptation: The characteristics of the raw materials directly affect the selection of the machine model. High-fat formulas (>12%) require heating functions, high-moisture raw materials require anti-sticking wall design, and fresh ingredients require temperature-controlled mixing (<40°C). Special ingredients such as trace additives require pre-mixing devices, and liquid addition requires atomization spray systems.
Process standard requirements: Process standards determine the equipment configuration level. Ordinary dog food requires a uniformity CV≤7%, high-end prescription food requires CV≤5%, and functional food should have a layered mixing function.
Equipment performance requirements: Key performance parameters are the core considerations for purchase. Mixing time (3-15 minutes/batch), residual rate (<0.5%) and energy consumption (≤0.8kWh/t) directly affect production efficiency and cost.
As a professional dog food mixer manufacturer, Dahan Machinery has many years of industry experience and provides food-grade 304/316L stainless steel mixing equipment for more than 300 companies around the world. Its products cover 200-3000kg processing capacity of double-shaft paddle and vertical planetary mixers, with a mixing uniformity of more than 98% and a residual rate of <0.3%. It is equipped with 15-75kW variable frequency motors and intelligent PLC control systems. It can complete high-uniformity mixing in 3-8 minutes, which is particularly suitable for formulas containing less than 15% oil. It has passed HACCP/GMP certification and has been exported to more than 30 countries with 20 patented technologies, providing customers with customized solutions and lifelong maintenance services.
Professional dog food production mixers are key equipment to ensure the quality of pet food. Their performance directly affects the nutritional balance and palatability of the product. Choosing suitable mixing equipment and combining it with scientific production processes will help pet food manufacturers improve their product competitiveness.
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