What do we know about twin screw pumps?
A twin-screw pump is a positive displacement pump based on the rotation of two screws. When the product enters the working chamber, it moves linearly between the screw turns. This pumping technology was applied in the oil and gas industry at the beginning of the 20th century - twin-screw pumps are widely used for pumping multiphase media. In the food industry, these units have appeared relatively recently. Jung Process Systems (Germany) is one of the companies that started producing and focusing on the efficiency of using such pumps in the food industry. We will now analyse the key features of their Hyghspin twin-screw pump line.
Hygienic design
- The pumps are certified in accordance with EHEDG,
- The screws do not touch each other and are independently driven - this prevents friction and metal particles from entering the product.
- All contact surfaces are polished and have a roughness of 0.8 µm (optionally down to 0.4 µm).
- No "dead zones", adapted to CIP and SIP cleaning.
Gentle pumping of the product and pulsation-free delivery
The twin-screw pump is like no other pump for gentle handling of delicate products. When it comes to hard inclusions, depending on the configuration of the screws, the Hyghspin can handle pieces up to 45 mm without damage. As for the effect on the texture of the product itself, there are no problems. When pumping delicate products (shear sensitive products), minimal hydraulic shear is experienced. Everything is based on linear movement - the product does not change its trajectory as it passes through the pump and is always in the space between the screw turns. If you take a cam pump, for example, the product moves through the pump due to the rotation of the rotors and changes direction several times. At high speeds, the pump can churn and have a detrimental effect on products with a sensitive structure. Hyghspin pumps are much more flexible in this respect.
A 2-in-1 solution: one pump for product and SIP
This is an advantage that no other positive displacement pump has. The design and pumping principle allows Hyghspin pumps to operate at screw speeds of up to 3600 rpm. This feature provides flexibility in terms of performance and pressure delivery. Let's look at an example for the Hyghspin90 pump:
The main mode is yoghurt feeding, 25 m3/h, 3 bar; product viscosity 1500 cPs; speed 563 rpm.
SIP mode - pumping of SIP solution (caustic), 50 m3/h, 3 bar; viscosity 1 cPs; speed 1765 rpm.
With a viscous product, the pump operates at a low speed of 563 rpm, and with a CIP solution at 1765 rpm. The washing mode usually requires higher performance. With a cam or screw pump, a bypass is required because the flow rate through them is limited. They cannot operate at high speeds, and it is not economically viable to install a larger pump for the sake of the SIP. Using a single Hyghspin pump avoids bypassing and reduces the number of pipelines. This makes the entire system more efficient and hygienic. For operation at different speeds, Hyghspin pumps are equipped with special VSD (variable speed drive) motors with frequency control from 5 to 130 Hz.
High-quality and effective product
Jung Process Systems specialises in the production of twin screw pumps, so the quality of Hyghspin is given 100% of the attention. All pump manufacturing and assembly operations are carried out on state-of-the-art machinery. The pump line is available in 4 sizes, covering a range of capacities from 0.03 m3/h to 300 m3/h. The required combination of flow and pressure is provided by a specific configuration of screws and rotation speed, which is selected individually to suit the customer's request. It is also worth noting the rather good self-priming capacity (NPSHr up to 0.5 m) and high outlet pressure (up to 35 bar). The viscosity range of the pumped products is from 1 to 1,000,000 cPs, the temperature is from -10C to 130C.
Thus, Hyghspin twin screw pumps are a quality product that meets all modern requirements and standards. With its help, enterprises can solve a number of complex technological problems and make their production more efficient.
To select a pump, you can contact our specialists at tel. 044-390-73-38