Selection and Construction of Screening Machines
Screening processes can be found in almost every industry where solids or bulk solids are processed. And although screening machines are among the more simple system components, there are several factors which must be considered when constructing an industrial screening machine if the screening is to work optimally later in the production.
And as with many other production devices, the material to be screened is at the heart of considerations. Which screening variants are differentiated in practice, which core components do the screens consist of, which screening process is suitable for my application and what to look out for in terms of operation and maintenance?
The guide written by our screening technology team provides the answers to important questions about screening bulk solids and offers an overview of the main criteria for constructing screening machines.
Big Bag Emptying as a Carefree Package
Like in many industries, the competitive pressure is always rising in tire manufacturing and forces the manufacturer to realize cost reducing potential in procurement and production. One aspect of this is the continual optimization of the raw material procurement with the aim to be able to manufacture in a more flexible way.
This is what a well-known tire manufacturer was aiming for in a current project performed by our company regarding big bag systems where the raw material silica was exclusively ordered in large containers. To be able to be more flexible with smaller batches, the manufacturer wanted to also be able to handle big bags during the delivery of the raw goods.
What was planned was a combined device made from two big bag stations which allowed for the limited space in the production hall and gave the operating staff enough room to operate the device easily, safely and most importantly without producing dust.
Flexible Production Looking for a Flexible Device
These days, contract packers are fulfillment service providers which, as well as simply doing packaging, also do storage, filling and order picking as well as delivering the goods to the trade on schedule.
Because the contractors for these service providers often come from various industries, different products have to be processed and, moreover, the respective production standards and hygiene regulations must be adhered to.
In this special case, the contract packer was looking for a device solution for emptying big bags with downstream straining /control screening and product conveying - and that in triplicate. The devices had to be constructed so that they could cope with a broad range of products and requirements.
An Application that is Working Wonders
A cosmetics and personal care product manufacturer in Russia was looking for a system for emptying big bags in their factory and the Engelsmann engineers came up with an ingenious solution.
Until now, emptying big bags full of soap noodles has been a problem. Because of their high fat content, they clump up and stick together making it difficult to achieve the desired accuracy when measuring them out.
Moreover, the Engelsmann engineers had to factor the bridging and dust-forming product characteristics of the system design into the calculation. To learn more on how the Engelsmann experts finally decided on using a double conveying screw to achieve the desired capacity, click on the link below.
Engelsmann makes history
J. Engelsmann AG is an enterprise with tradition. Founded 143 years ago, a great deal has happened in its many years of history. A reason to have an extensive browse through the archives in order to explore its own history in detail. We have compiled the events that are most steeped in history for our employees and customers and have prepared a brief online presentation. You would be very welcome to get to know Engelsmann in its entirety.
Store and transport replacement screen inserts safely
The heart of any screening machine is the insert with the screen mesh which, depending on the particle size range to be screened, is designed with a specific mesh width. If the task changes often, the adaptation of the screening machine is done simply by switching the insert or through retrofitting of the machine with a different screen mesh. Operators of screening machines therefore generally work with multiple replacement screen inserts which, when not in use, must be stored such that they are immediately to hand when they are needed. For food and pharmaceuticals applications, there are also particular security and hygiene requirements for the storage of production equipment such as screen inserts.
A well-known pharmaceuticals company which works with vibration screening machines from Engelsmann required a clean and secure option for the temporary storage of screen inserts which are not in use for its production. Since the inserts are stored separately from the screening machine, the solution needed to ensure simple and quick handling of the screen inserts when changing the screen. In addition, the company was looking for a sealed storage option in order to prevent cross-contamination and to prevent the finest product particles from escaping into the production atmosphere.
Based on this, the engineers at Engelsmann AG designed a special storage cabinet into which the screen inserts, complete with the integrated ultrasound cleaning systems, can be securely slid. With the help of a robust door, clamping devices and a continuous seal, the cabinet can be closed dust-tightly. Since the operators also screen products at a high temperature, the door was designed with ventilation slots so that heated screen inserts can cool off unhindered without too much moisture building up in the storage cabinet itself as a result. A further benefit of the insert cabinet lies in the fact that it can be used as a transport container if the screen inserts need to be transported internally to the screening machine or sent externally for re-covering. If necessary, the cabinet can easily be picked up with a forklift or, for the mobile variants, be moved on casters.
Screening for the good cause - Engelsmann builds prototype for the International Water Aid Organization
A current project, in which Engelsmann is supporting the International Water Aid Organisation (IWAO) and the Mannheim University of Applied Sciences, has proved that screens can save lives. The shared aim: the production of an emergency water tank which should enable natural disaster victims to access uncontaminated water for the first three days.
The Engelsmann team is delighted to have contributed to constructing the prototype of this important project.
For more information on the prototype launch and how it works, click on the link below.