Food grade water pump is a pump specifically designed for conveying food grade liquids. Food grade liquids refer to liquids that come into direct contact with food, such as milk, fruit juice, alcohol, soy sauce, etc. These liquids need to meet certain hygiene and safety requirements, so specialized food grade water pumps are needed for transportation.

The design and material selection of food grade water pumps comply with the regulations of the food industry, ensuring that there will be no pollution or adverse effects on the liquid during transportation. These pumps are usually made of non-toxic and rust resistant materials such as stainless steel or plastic to ensure that harmful substances are not released during use.

In addition to material selection, the design of food grade water pumps is also different from ordinary pumps. For example, the sealing ring of food grade water pumps is usually made of food grade silicone material to ensure that there is no leakage or contamination. In addition, the surface treatment of food grade water pumps is also more stringent, usually requiring polishing treatment to ensure a smooth and flawless surface.

Shenpeng food grade pumps generally use a voltage of 12V or 24V, using brushless DC technology, with a long service life, no maintenance, small size, high efficiency, low power consumption, strong anti-interference ability, and stable operation.

The use of food grade water pumps can ensure safety and hygiene during food production, avoiding food contamination or adverse effects caused by pump problems. These pumps are widely used in industries such as food processing, beverage production, and dairy products, and are one of the important equipment to ensure food safety.

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R & D, design and production of food water pump

Guangdong Shenpeng Technology Co., Ltd. was found in 2012 and is specialized in brush-less DC water pumps. As a global BLDC water pump solutions specialist, it integrates R&D, manufacture with sales.The products are mainly applied to New-energy vehicle, mattress, home appliance (water heater, dish washer, coffee machine, water dispenser), smart toilet, cosmetic/medical equipment, machine tool equipment, air conditioning base station, PC, LED cooling system etc.

Shenpeng was the earliest company that managed to produce the brushless DC water pumps. It is located in Changping, Dongguan and covers an area of 12000㎡. With an in-house CNAS standard laboratory, 300-thousand-grade dust-free workshop and 10 professional production lines. The annual production capacity is more than 5 million sets of water pumps and it is one of the largest manufacturer of BLDC water pump in China. It won many honorable titles such as High-tech Enterprise, Multiplication Enterprise etc.   

What is a food grade pump and the difference from a regular pump?

Food-grade pumps are specifically designed for handling fluids that come into direct contact with the human body, such as food, beverages, and pharmaceuticals. Compared with ordinary pumps, food-grade pumps have extremely strict requirements in terms of material selection and hygiene standards. Ordinary pumps focus on functionality and cost-effectiveness, and only consider corrosion resistance and mechanical strength when selecting materials; the core of food-grade pumps lies in ensuring that the fluid is not contaminated or chemically reactive during the transmission process, thus guaranteeing the safety and quality of the final product.

In terms of material application, all components of food-grade pumps that come into contact with the fluid, such as the pump body, impeller, and seals, are made of materials that meet food hygiene and safety standards. Common materials include food-grade plastics such as polypropylene (PP) and polyethylene (PE), which are non-toxic, odorless, and have high chemical stability, effectively preventing chemical reactions with the fluid; medical-grade stainless steels such as 304 and 316L are also commonly used materials. They not only have excellent corrosion resistance but also have a high surface finish, are less likely to breed bacteria, and are easy to clean and disinfect. In contrast, ordinary pumps may use common engineering plastics or industrial-grade metal materials, which pose a risk of material component leaching and fluid contamination during long-term contact with food and beverages.

In terms of structural design, food-grade pumps follow the principles of no dead corners and easy cleaning. Their internal flow channels are smoothly designed to avoid dead corner areas where liquid can accumulate; at the same time, the components are highly detachable, facilitating users to carry out in-depth cleaning and maintenance, reducing the growth of bacteria and the accumulation of dirt. Ordinary pumps rarely consider the convenience of cleaning and maintenance and are difficult to meet strict hygiene requirements when used for food and beverage transportation.

The working principle and importance of micro food grade water pumps

Micro food grade water pumps typically consist of the following basic components: pump body, pump cover, impeller, shaft, and sealing system. The pump body and pump cover constitute the outer shell of the pump, and the impeller is the core component of the pump, responsible for the transportation of liquids.

Startup phase: When the pump starts, the motor drives the shaft to rotate, which in turn drives the impeller to rotate.

Suction stage: The rotation of the impeller generates centrifugal force, causing the liquid to be sucked into the pump body.

Transport stage: The liquid is propelled by the impeller and transported along the pump's flow channel to the outlet.

Boosting stage: Due to the high-speed rotation of the impeller, the liquid gains kinetic energy inside the pump, thereby achieving boosting.

3. Types of micro food grade water pumps

Micro food grade water pumps can be classified into several types based on their working principles, including centrifugal pumps, gear pumps, screw pumps, etc. Each pump type has its specific application scenarios and advantages.

Characteristics of food grade pump products:

1. Flow and Head Characteristics

Food grade centrifugal pumps exhibit distinct characteristics in terms of flow and head. They offer a considerable and adjustable flow rate. Within the rated speed range, there is an approximate linear relationship between the flow rate and the rotational speed. Flow adjustment can be easily achieved by precisely controlling the motor speed through variable frequency technology or by skillfully adjusting the opening of the outlet valve. Compared with other types of pumps, food grade centrifugal pumps can stably deliver a larger flow rate under the same power condition, meeting diverse fluid conveying requirements. In terms of head performance, food grade centrifugal pumps are typically medium - low head pumps, with the head usually ranging from several tens of meters. This characteristic is determined by their working principle and structural design. As the head increases, the pump efficiency gradually decreases. Therefore, during actual selection and application, it is essential to accurately set the pump's operating point within the high - efficiency range according to specific working conditions to ensure optimal performance and energy utilization efficiency.

2. Suitable for Applications with Large Flow and Medium - Low Head

Thanks to their characteristics of large flow and medium - low head, food grade centrifugal pumps are widely used in household appliances and related fields. In water dispensers and water purifiers, to ensure the rapid and stable transportation of water from the storage end to various treatment processes such as filtration and heating, and finally to the user end, a high flow rate is required while the head to be overcome is relatively low. Food grade centrifugal pumps can precisely meet these needs, ensuring the efficient operation of water drinking equipment. During the production process of juicers, a large amount of pulp needs to be juiced quickly and the juice needs to be transported to the storage tank. The large flow characteristic of centrifugal pumps significantly improves the juicing efficiency. In the water inlet and drainage processes of dishwashers, it is necessary to quickly complete the injection of cleaning liquid and the discharge of sewage. With their large flow and appropriate head, food grade centrifugal pumps ensure the smooth and efficient operation of the dishwasher cleaning process, making them an ideal fluid conveying solution.

3.1 Advantages of DC Brushless Motor Drive

DC brushless food grade pumps equipped with DC brushless motors demonstrate outstanding driving performance. From an energy - saving perspective, traditional brushed motors have significant energy losses due to the friction between the carbon brushes and the commutator. In contrast, DC brushless motors adopt electronic commutation technology, completely eliminating this frictional loss, resulting in a substantial increase in motor efficiency. Compared with traditional brushed motor pumps, energy savings of 30% - 50% can be achieved, effectively reducing the full - life - cycle operating costs of the equipment. In terms of speed control, DC brushless motors achieve precise speed adjustment through Pulse Width Modulation (PWM) signals. They can flexibly control the speed within a wide range, thereby accurately adjusting the flow rate and pressure output of the pump. Whether the equipment is in a low - load standby state or facing high - load working requirements, it can respond quickly and maintain stable and efficient operation, easily adapting to complex and changeable working conditions.

3.2 Comparison with Traditional Brushed Motor Pumps

Compared with traditional brushed motor pumps, DC brushless food grade pumps have significant advantages in service life, noise, and electromagnetic interference. The carbon brushes of traditional brushed motors continue to wear during long - term operation. When the wear reaches a certain level, the carbon brushes must be replaced; otherwise, it will lead to motor failure. Their average service life is usually only 1000 - 3000 hours. DC brushless motors, however, abandon the carbon brush structure, and their main losses come from components such as bearings. Under normal working conditions, the service life can reach more than 10,000 hours, greatly reducing the frequency of equipment maintenance and downtime, and lowering the comprehensive maintenance cost. In terms of operating noise and electromagnetic interference, the friction between the carbon brushes and the commutator of traditional brushed motors generates significant noise, and the sparking during commutation creates electromagnetic interference, affecting the normal operation of surrounding electronic devices. DC brushless motors operate smoothly and quietly, generating almost no electromagnetic interference, creating a quiet and stable usage environment. They are more suitable for application scenarios with strict requirements for noise and electromagnetic environment.

3.3  Application Advantages in Specific Household Appliances

In the application scenario of juicers, DC brushless food grade pumps significantly enhance product quality with their excellent performance. Through precise speed control, the impeller can rotate at the optimal speed, quickly separating the pulp from the juice while minimizing damage to the juice cells, and completely preserving the nutrients such as vitamins and minerals, as well as the natural flavor substances in the juice. In addition, the efficient motor drive enables the pump to process a large amount of fruit in a short time, greatly improving the juicing efficiency and meeting users' rapid demand for fresh juice. In the field of dishwashers, DC brushless food grade pumps show strong environmental adaptability. When dishwashers are in operation, the internal environment is high - temperature and high - humidity. The motors of ordinary pumps are prone to failure due to the erosion of water vapor and high temperature. DC brushless motors adopt a fully sealed design, effectively isolating water vapor and heat, protecting the internal electronic components, and ensuring the stable operation of the pump in high - temperature and high - humidity environments. They provide reliable power support for the water inlet, drainage, and spray systems of dishwashers, ensuring efficient tableware cleaning results.

The characteristics of DC brushless food grade water pumps:

1. Long service life, maintenance free, small size, high efficiency, low power consumption, strong anti-interference ability, and stable operation; No carbon brush, no pollution, electronic reversing, long service life; Can work continuously for 24 hours without interruption.

2. The motor stator and circuit board are sealed with epoxy resin, completely isolated from the rotor, solving the leakage problem caused by long-term submergence of the motor type DC water pump. It can be installed underwater and is completely waterproof;

3. The pump parameters can be customized according to customer requirements, with unchanged volume and wide voltage operation;

4. The water pump shaft adopts high-performance ceramic shaft, which has high accuracy and good wear resistance. Due to the precise combination of high-precision shaft sleeves and ceramic shafts (which can be replaced by other materials to reduce costs), the noise is low, and the noise with lower power can even reach below 30 decibels;

5. The three-phase Hall free program driven DC water pump in the water pump series can achieve PWM speed regulation, analog signal (0-5V) speed regulation, and potentiometer VR manual speed regulation, thereby adjusting flow and head.

6. Food water pump, small volume, large flow rate; Liquid flow without pulsation;

Product structure characteristics of food grade pumps:

1. The material is ABS material certified by FDA, more reassuring!

2. Combined with the characteristics of brushless DC water pumps, the efficiency can be improved by 20%, and the internal structure of the chamber can be cleaned without disassembly;

3. By extracting liquid from the center of the motor, the temperature rise generated during motor operation can be reduced and the service life can be extended; No need for any lubricating grease addition;

4. The bearing structure of the water pump is free of any grease or lubricant, which will not pose a safety hazard to food;

5. The hybrid pump structure design combines axial flow and centrifugal flow to meet the efficient heat dissipation effect of the water pump itself. The motor and rotor isolation screen wall structure is used to achieve natural lubrication effect when the water pump is working.

Standards and materials required for food grade pumps:

The pumps used in the food industry must meet strict standards and requirements to ensure the safety and quality of food. Food grade pumps need to comply with national or regional food safety regulations, as well as specific mechanical performance, material, and design requirements.

1. Standards and requirements

1.1 Mechanical performance standards

The mechanical performance of food grade pumps needs to meet relevant standards and requirements to ensure their normal operation and safety. These standards include:

1.1.1 Explosion proof standards: For food factories that may have explosive environments, pumps need to meet explosion-proof standards, such as IEC 60079-11 or ATEX 100A.

1.1.2 Corrosion resistance standard: Food grade pumps need to be able to resist the erosion of various corrosive substances, so materials with corrosion resistance are required. Meanwhile, the design and structure of the pump also need to consider corrosion resistance requirements.

1.1.3 High and Low Temperature Standards: Food grade pumps need to operate normally in different temperature environments, so they need to meet high and low temperature standards, such as ISO 2858-3 or NEMA Standard 267.

1.2 Material standards

The materials for food grade pumps need to meet the following standards and requirements:

1.2.1 Non toxic and odorless: The materials used for food grade pumps must be non-toxic and odorless, without causing contamination or odor to the food.

1.2.1 Corrosion resistance: The material of food grade pumps needs to be able to resist the erosion of various corrosive substances, such as acid, alkali, salt, etc.

1.2.3 Easy to clean: The material of food grade pumps needs to be easy to clean, easy to disassemble and assemble, for easy cleaning and maintenance.

1.3 Design requirements

The design of food grade pumps needs to meet the following requirements:

1.3.1 Good sealing performance: Food grade pumps need to have good sealing performance to prevent leakage and contamination.

1.3.2 Easy to maintain: The design of food grade pumps needs to consider ease of maintenance and replacement of parts to reduce maintenance costs and downtime.

1.3.3 Simple structure: The design of food grade pumps needs to be as simple as possible, avoiding too many complex structures to reduce failure rates and maintenance difficulties.

2. Common materials

1. Cast iron: Cast iron is a commonly used food grade pump material with advantages such as corrosion resistance and low cost. However, cast iron has lower strength and is prone to impact and wear.

2. Stainless steel: Stainless steel is a high-strength, corrosion-resistant food grade pump material widely used in various food grade pumps. Stainless steel has good corrosion resistance and wear resistance, as well as good processability and aesthetics.

3. Polypropylene: Polypropylene is a non-toxic and odorless food grade pump material with good corrosion resistance and mechanical properties. Polypropylene has a relatively low price and is easy to process and manufacture.

Advantages of food grade water pumps:

Food grade water pumps play an important role in the fields of food processing and packaging. These water pumps are uniquely designed to handle food grade liquids, ensuring the safety and quality of food. Compared with other water pumps, food grade water pumps have many advantages in the food industry, mainly including:

Food safety: Food grade water pumps are made of food grade materials, such as stainless steel and silicone, which meet food safety standards and will not contaminate food. In addition, the design of food grade water pumps also ensures that they do not produce harmful chemicals during use, thereby ensuring food safety.

High efficiency and low energy consumption: Food grade water pumps have high efficiency and can effectively transport liquids from one place to another. This is very important for food processing and packaging processes as it can reduce energy consumption and improve production efficiency.

Easy to clean: The design of food grade water pumps is easy to clean and maintain. Due to the need to maintain cleanliness in food processing environments, this easy to clean design can reduce cleaning and maintenance time and costs.

Durability: Food grade water pumps are usually made of high-quality materials and have high durability. They can operate under high loads without wear or damage. In addition, these water pumps also have a long lifespan, which can reduce replacement and maintenance costs.

Widely used: Food grade water pumps have a wide range of applications and can be used in industries such as food processing, beverage production, and dairy manufacturing. This wide range of applications makes them important equipment in the food industry.

In summary, the advantages of food grade water pumps include food safety, high efficiency, ease of cleaning, durability, and a wide range of applications. These advantages make them ideal choices in the field of food processing and packaging.

Application fields of food grade water pumps

Food grade water pumps are mainly used in industries related to food and pharmaceuticals, such as:

1. Food industry: used for conveying liquid and slurry food.

2. Beverage industry: used for conveying liquids such as beverages and fruit juices.

3. Pharmaceutical industry: used for transporting raw materials, intermediates, finished products, etc. in the pharmaceutical process.

In addition, food grade water pumps are also used in some other industries, such as chemical engineering and environmental protection. As long as it involves the transportation and drinking of liquids, it is possible to use food grade water pumps.

How to choose a suitable food grade water pump for oneself

When choosing a food grade water pump, multiple factors need to be considered. The material should be non-toxic, odorless, comply with food contact standards, and avoid contamination. Choose the appropriate size according to the requirements and pay attention to the sealing performance to prevent leakage. The power needs to be moderate, balancing efficiency and energy consumption. Clearly define the requirements for flow rate and head to ensure that production needs are met. Certification and standards such as NSF/ANSI, FDA, etc. ensure that products meet hygiene and safety requirements. Reliability, durability, and brand reputation are equally important, and well-known brands typically offer better quality and after-sales service. Easy maintenance can reduce operating costs. Environmental protection, low noise, and high efficiency and energy conservation are additional bonus points. Ultimately, a choice is made based on the budget, emphasizing both quality and performance.     MORE>>

Maintenance of food grade water pumps

Food grade water pumps require regular maintenance during use to ensure their normal operation.

Liquid cleaning: After each use, the liquid needs to be emptied and rinsed with clean water; After prolonged use, it is also necessary to clean the internal pipelines with clean water.

Lubrication and maintenance: The water pump needs to be lubricated and maintained according to the instructions every year to reduce wear and friction.

Anti corrosion treatment: if the water pump part is exposed to Corrosive substance for a long time, it is necessary to carry out anti-corrosion treatment on the water pump.

The unique advantages of 12V food grade water pump

The 12V food grade water pump has become a market focus due to its food grade materials, low-voltage DC power supply design, excellent durability, and high-efficiency energy-saving characteristics. It uses non-toxic, harmless, and corrosion-resistant high-quality materials that comply with food safety standards, reducing the risk of electric shock and minimizing heat generation. The water pump has wear-resistant seals, optimized fluid dynamics design, and intelligent protection functions to ensure long-term stable operation. It is compact and flexible, widely used in household kitchens, beverage machines, coffee machines and other scenarios, making it an ideal choice for the food and beverage industry, demonstrating significant advantages.     MORE>>

Application of food grade water pump in coffee machine

As the core component of coffee machines, food grade water pumps are crucial in their application due to their small size, high efficiency, safety, and stability. This water pump is designed specifically for the food and beverage industry, powered by a 12V DC power supply, and complies with FDA or EU food safety standards to ensure safety in contact with food.

In coffee machines, food grade water pumps are mainly responsible for key tasks such as water transportation, pressure control, and temperature regulation. It precisely controls the water flow to ensure the concentration and taste of coffee; At the same time, it can maintain a certain pressure during the brewing process to extract the best flavor of coffee; Some models also use a water pump to regulate the water temperature, ensuring that the water temperature for brewing coffee is appropriate.

The advantages of food grade water pumps are significant. Firstly, it is made of food grade materials to ensure the safety of coffee; Secondly, low-voltage design achieves energy efficiency while maintaining efficient water transportation capacity; Furthermore, the compact size makes it easy to integrate into the interior of the coffee machine without taking up additional space; Finally, the simple structure makes maintenance and cleaning relatively easy, which contributes to the long-term stable operation of the coffee machine.      MORE>>

12V Micro Food-Grade Water Pumps in Beverage Production

The 12V micro food-grade water pump, especially the DC brushless one, plays a vital role in beverage production. It features food-grade materials for components in contact with beverages, ensuring compliance with safety standards and no liquid contamination. Operating at 12V, it offers enhanced safety in wet production environments. The DC brushless motor brings high efficiency and energy saving, precisely controlling the flow rate and pressure of the pumped liquid for accurate dosing and mixing. Its working principle based on electronic commutation technology drives the impeller to rotate stably and reliably, reducing wear and prolonging service life. In beverage production, it is applied in liquid transfer to ensure smooth and hygienic movement of raw materials like fruit juices, syrups and water. It enables efficient and uniform mixing during ingredient combination, contributes to carbonation and pressurization in carbonated beverage production, and is essential for filtration and circulation to maintain the clarity and quality of the final product. This pump significantly enhances product quality by ensuring consistent taste, texture and appearance, improves production efficiency with reliable operation and efficient pumping, and helps beverage manufacturers comply with strict food safety regulations, reducing the risk of recalls and safeguarding consumer health. Thus, it has become an indispensable part in modern beverage manufacturing and will likely have a more prominent role as the industry evolves.      MORE>>