Chocolate Pumps for High Viscosity Products by Desmi
Image source https://www.desmi.com
Desmi is the leading manufacturer of dark, milk, or white chocolate pumps. Desmi offers ROTAN types of pumps specially intended for high-viscosity products like chocolate, cocoa mass, cocoa liquor, cocoa butter, dissolved sugar, caramel, liquid chocolate, and other sugar products. The pumps are equipped with a heating jacket on the front and rear ends. Rotors, idlers, and idler bushings have special clearances, enabling working pressures up to 12 bar.
Chocolate Pumps Problems
The main problem that occurs with chocolate pumping is blockage. The internal parts of pumps often block when pumping the chocolate. This happens because of the increased temperature in the pump, which caramelizes the chocolate so that it freezes. As more chocolate freezes, the internal friction in the pump is increased and starts a vicious circle. This finishes when the pump blocks completely. The following process is particularly true when pumping chocolate under relatively high pressure.
Desmi-manufactured ROTAN chocolate pumps provided the solution to this problem: The internal tolerances in the pump are designed, so that ‘’new’’ chocolate is always added to the areas around the rotating parts of the pump, particularly around the axis. This reduces the tendency for the chocolate to caramelize on the back of the rotor and at the bearing of the star wheel, preventing the pump from blocking.
Pump Material Chart
Pump Construction | Casing | Front Cover | Bracket | Rotor | Idler | Shaft | Idler Pin | Shaft Seal | Idler Bushing | Rear Bushing |
Cast Iron | GG25 | GG25 | GG25 | GG25 | GG25 | 16MNCr5 | Carbon Steel | Packing | Bronze | Bronze |
Stainless Steel | AISI316 | AISI316 | GG25 | AISI329 | AISI329 | AISI329 | AISI329 | Packing | Bronze | Bronze |
- Specially designed for Rotor with T=2 chocolate clearances
- Special designed main bearing lubricated externally
- Special designed Idler gear for increased flow to Idler pin
- Front and rear heating jackets are standard on CHD (chocolate) pumps.
HVH Industrial Solutions is an authorized distributor of Desmi Pumps. We work closely with their engineering team to provide superior customer service and engineering support.
If you have any questions, write us via live chat, call, or send us a quote request. The HVH team is always ready to help you.
Vladimir Harutyunyan
Vladimir Harutyunyan is the founder of HVH Industrial. He has masters degree in mechanical engineering and over 10 years of experience in mechanical power transmission field.
Feel free to connect with Vlad on Linkedin: https://www.linkedin.com/in/vladharut
Vladimir Harutyunyan
Vladimir Harutyunyan is the founder of HVH Industrial ...
Feel free to connect with Vlad on Linkedin: https://www.linkedin.com/in/vladharut