2022-08-27 Operating efficiency of melt pump and D-type bearing

There is a small amount of melt loss in the melt pump, which makes the operating efficiency of the pump unable to reach 100%, because these melts are used to lubricate both sides of the bearing and gear, and the pump body is never fit without clearance, so the melt cannot be discharged from the outlet 100%, so a small amount of melt loss is inevitable. However, the melt pump can still operate well, and for most extruded melts, the efficiency can still reach 93% - 98%. The rotation speed of a melt pump is actually limited, which mainly depends on the conveyed melt. If oil is conveyed, the pump

2022-07-25 What are the guarantee measures for the stable operation of high temperature melt gear pump?

The service life of high temperature melt gear pump depends on whether a stable bearing lubrication film can always be maintained between the sliding bearing and the gear journal. The outlet pressure of the pump, the speed of the pump, and the viscosity of the melt all directly affect the bearing capacity of lubrication. In order to improve the stability and reliability of high-temperature melt gear pump operation, the following matters should be paid attention to in the operation and maintenance of melt gear pump: 1. During shutdown, it is forbidden to keep the high-temperature melt gear pump

2022-07-15 Specifications of melt pump for BOPP film production line

Zhengzhou Batte provides a special melt pump for BOPP film according to the production process requirements of high-performance film-biaxially oriented film. Zhengzhou Batte closely follows the needs of customers and combines its own technical expertise to provide customers with stable and reliable melt pump technology solutions. Advantages of BOPP Film Melt Pumps 1. Optimized melt flow channel design: Eliminate the dead angle in the flow channel, reduce the polymer residue, and improve the quality of the product. 2. Improved gear parameter design: More accurate rotation and displacement desig

2022-06-09 What is the relationship between melt pump displacement and gears?

For high temperature melt gear pumps, there are three standard gear types as well as some special gear types with smaller or wider gear pumps or adjusted geometries. High temperature polymer melt gear pumps are available in spur, helical and herringbone gears. Each of these gear types has different properties that are important to the use of the gear type. What is the relationship between melt pump displacement and gears? The volume of melt discharged by the melt pump per revolution is called the theoretical displacement of the pump, or the displacement of the pump, and the unit is cc/r. For a

2022-05-31 What do you think of the volume rate of the melt pump?

The volume rate of the melt pump is the volumetric efficiency of the melt pump (pump volumetric efficiency) refers to the ratio of the actual flow rate of the pump to the theoretical flow rate. For the calculation of the volumetric efficiency of the melt pump, Zhengzhou Batte melt pump manufacturer uses the following specific formula to express the description: For example, the actual efficiency of the melt pump is higher than 90%, the pump is very good. If the efficiency of the pump is 80-90%, the efficiency of the pump is low, then the cause of the deterioration should be observed. If the ef

2022-05-19 Batte rubber extruder melt gear pump advantages

Batte melt pump for rubber extrusion is used in the extrusion system of elastomers and easily degradable plastics. This type of pump adopts a special internal structure and has efficient self-cleaning function. It is suitable for the extrusion of rubber elastomers. It is generally installed at the outlet of the extruder and the die Do booster and voltage regulator metering between the heads. With a special drive for continuous transmission of plasticized materials, it can stabilize the pressure uniformity, especially for the downstream part of the screw, to improve the uniformity of screw conv

2022-05-07 What are the disadvantages of the mechanical seal of melt pump?

In order to keep the melt pump in a good running state, reduce the times of shutdown and maintenance, and then reduce the times of pump lifting and lowering load, the technical transformation of the mechanical seal is carried out from prolonging the service life of the mechanical seal. The welded bellows mechanical seal is adopted to reduce the leakage point of the mechanical seal and improve the service life of the mechanical seal. The mechanical seal structure used in the melt pump has the following deficiencies after a period of use: 1. The stress of O-ring or packing is released after long

2022-02-24 Reasons and Countermeasures of Melt Pump Coupling Tripping

The melt pump is the discharge pump of the final polymerization reactor, and it is the power equipment for the polyester plant to deliver the melt to the downstream short fiber and filament plant, and it is one of the key equipment of the polyester plant. However, 10 months after the start of the polyester plant, the coupling of the melt pump has been tripped for many times, causing the product quality of the plant to fluctuate greatly and causing huge economic losses to the enterprise. This paper makes a comprehensive analysis of the factors that affect the tripping of the melt gear pump coup

2021-12-09 The working condition of the sliding bearing affects the efficiency of the melt pump

Working principle of melt booster pump: Polymer melt booster pump is a positive displacement pump, and it relies on the change of working volume caused by the meshing of the main and driven gears to transport the melt. The working volume is composed of the pump body, the tooth groove of the gear and the bearing with the function of the side plate. When the gear rotates, the melt enters the tooth grooves of the two gears in the suction cavity. As the gear rotates, the melt is brought into the discharge cavity from both sides, and the gear meshes again, so that the melt in the tooth groove is sq

2021-11-03 Three commonly used forms of PP meltblown metering pump gears

PP melt blown metering pump is a kind of melt pump , which is mainly used in melt blown production line. Its function is to measure, control output and fiber fineness, and deliver the melt to the spinneret continuously and evenly. Zhengzhou Bart provides gears for melt blown metering pumps. There are three standard types of gears and some special designs such as narrower or wider gears. Straight teeth, helical teeth and herringbone teeth are our standard gear forms. These gear forms have different characteristics, and the selection of these characteristics is very important. Straight tooth Str