How to check documents is described above Screw pump After making the correct selection and mastering several key points, the pump set configuration is determined according to the project budget. This article focuses on the key points to be considered in terms of configuration

2、 Configuration

about ALL The configuration of WEILER single screw pump can be selected from the following aspects:

1. Shaft seal

Shaft seal mainly includes packing seal and mechanical seal. Each type will be subdivided into many different types. For example, packing seal can be flushed with water or without water. And those with water flushing can be subdivided into three structures according to the location of the flushing water ring. These need to be configured according to specific application scenarios.

Packing seal with three different flushing water ring arrangements

The mechanical seal has multiple choices according to the medium conveyed. For example, it can be divided into single face mechanical seal and double face mechanical seal, or common seal and cartridge seal, balanced seal and unbalanced seal according to the seal structure. The common single end mechanical seal has the widest application range, such as AEB1E/AEB1F and other series of products used in the environmental protection industry to transport sewage. Most of them are equipped with common single end mechanical seals, and the friction surfaces of the dynamic and static rings are made of silicon carbide. This type of structure is simple and reliable, low cost, very popular with users, and the sealing effect can fully meet the needs.

Several Common Mechanical Seals

The transportation of materials with high solid content and high viscosity is much more complicated. For example, for the transportation of calcium carbonate, coating and other media commonly seen in the paper industry, the ordinary single seal is no longer competent, because the content of particles in the materials is very high, and the wear on the friction surface is very serious. Moreover, the dry materials after shutdown will also cause damage to the friction surface when restarting. Therefore, a double end face type seal must be considered at this time. The double mechanical seal must be flushed with a channel of flushing water to keep the two sealing surfaces clean and lubricated. At the same time, the pressure of sealing water will be higher than the pressure of the feed chamber, which can also prevent materials from flowing into the sealing chamber. If the budget is sufficient, container type mechanical seal can be considered. The cartridge seal is easy and fast to replace, and the functional requirements for operators are not high. Moreover, the service life can reach years that satisfy the user under the condition of ensuring that the flushing water does not stop flowing. Moreover, due to the optimized design of its structure, the flushing water can be prevented from entering the feed chamber to the maximum extent, which may cause medium pollution.

2. Drive motor

According to the actual needs, a high cost performance reduction motor can be configured. According to the budget of the project, it can be considered to purchase the complete set of reduction motors matched with ALLWEILERALLWEILER, ALLWEILER authorized agents, ALLWEILER screw pumps imported from Germany, or complete the set in China. Direct connected series products, such as AEB And other series (the model includes "B" for direct connection type). Since most of the reduction motors are customized products (to fit with the pump hollow shaft), only the reduction motors matched by the original factory can be considered. If a series of products with their own bearing boxes are selected, such as AE series of bare shaft end, the reducer motor with B3 structure can be configured arbitrarily. The advantages and disadvantages of the direct connected pump and the bearing box pump will be introduced in detail later.