Typical applications of materials and structures for pumps in food machinery

Thick mustard and clear vinegar

The flexible linear spiral rotary pump allows it to handle clear and 6000SSU viscous fluids, slurries, and uniform fluids with small particles. In this device, clear vinegar is stored at ground level and then pumped into a storage tank above the floor. Then it flows into the ingredient tank due to gravity, adding mustard seeds and salt to the tank. These mixed ingredients are discharged into a mixing tank, and the resulting mustard product is pumped into a hopper and loaded into bottles on a moving conveyor belt.

August Barer& The pump installed by Sons Company is required to handle a flow rate of 10GPM at a pressure of 50PSI and a viscosity of 5000SSU. Only two components came into contact with corrosive fluids. They are all plastic. The lifespan of the thicker part of the polypropylene pump body is infinite because it does not react with food and its smooth interior also reduces wear. Synthetic rubber flexible lining also does not react with food, but wrinkling of the lining can remove a part of the product, especially when the fluid contains grinding powder. A service report provided by the company states that this type of pump for handling clear vinegar only needs to replace the lining once in its first 20 years of operation. Although the pump for handling sticky mustard requires regular and planned replacement of the lining, this work can be completed on-site in a few minutes without the need for special tools.

Dairy processing and its environment

In the production of dairy products such as milk, cream, yogurt, ice cream, tofu, juice, and many desserts, the treatment of many corrosive chemicals used in washing equipment is similar in many ways to the treatment of these chemicals in the entire industry. It is also important to note that pollutants discharged into the air or local water or wastewater systems should comply with environmental regulations. These require careful selection of structure and manufacturing materials to ensure that these pumps can resist the corrosion and abrasion characteristics of fluids, and that these fluids can be thoroughly discharged after use, while also ensuring that the cleaning work does not contaminate the food they are processing.

Shanghai Hongfeng Valve is strict with itself and strives to do a good job in environmental protection.

Tuscan Dairies is a large regional dairy processor in the United States that requires daily cleaning after production. Tuscan's standard procedures require washing the fluid treatment system and dismantling, cleaning, and reinstalling the equipment used. This process is accelerated by the use of strong alkaline and acidic solutions, as well as various chemicals, to neutralize the waste liquid before it flows into the wastewater system. Flexible linear pumps are very suitable for transporting various chemicals to storage tanks and discharging them from these tanks. There are 7 types of synthetic rubber materials that can be used for this lining, and 4 types of materials that can be used for pump bodies.

A modern dairy factory in Scotland is facing various issues in meeting local water agency requirements. These issues arise due to the injection of dilute sulfuric acid into the wastewater treatment system to assist in the coagulation of waste milk/wastewater. The adjustment and control requirements for the pH value of the waste liquid are very strict. The British process design company Steel solved the problem of the dairy factory by using homogeneous polypropylene for all pump components that come into contact with the fluid, in order to ensure resistance to the corrosiveness of the chemicals used. This is because the pH range with which no chemical reaction occurs is wide.

For the treatment of water/milk and sulfuric acid, it is required that the pump can meet the requirements of the Vanton vertical centrifugal pump Sump Gard, which has a thermoplastic drainage riser and reinforcement bars of the same material. The pump casing, casing cover, and impeller are molded from pure polypropylene. Sinking bearings include ceramic inner sleeves and Teflon or ceramic outer sleeves. The sleeve of the stainless steel shaft is made of the same material.

For the treated waste liquid, the requirement for the pump is to meet the regulations of the Vanton vertical centrifugal pump Sump Gard. The pump's casing, casing cover, flange, and impeller are all made of homogeneous polypropylene molding. The open sealing area of the drive bearing seat is large for simplified maintenance, and there is a retractable front bearing to reduce the overhang and deformation of the shaft.