What are the characteristics of the structure of the rubber melt gear pump?
In the rubber and plastics industry, melt gear pumps are widely used in the pressurization and metering of plastic and rubber melts. However, due to the easy decomposition of rubber and other reasons, the conventional melt pump cannot meet its production needs due to the tendency of over-temperature. In addition, due to the pressure fluctuation of the upstream incoming material, which affects the size and quality of the rubber product, the sleeve of the gear shaft is usually opened with a spiral groove that rotates in the same direction as the gear. When the pressure is high, the material is discharged through the spiral groove to the outside. Achieve the purpose of stabilizing the pressure of the melt gear pump, but the outflow of a large amount of material causes cost.
The rubber melt gear pump provided by Zhengzhou Batte can prevent the melt gear pump from overheating and stabilize the pressure of the melt gear pump without discharging a large amount of material. What are the structural characteristics of the rubber melt gear pump will be described in detail below.
The rubber melt gear pump is composed of a pump body, an end plate, a sealing sleeve, a heat preservation cavity of the pump body, a gear shaft, and a gear sleeve. Three-way spiral grooves are arranged on the rotating surface of the gear sleeve and the sealing sleeve, and the gear shaft can be cooled. Gear shaft. The three-way spiral grooves from the pump cavity to the outside are: spiral grooves rotating with the gear shaft, spiral grooves perpendicular to the axis of the gear shaft, and spiral grooves counter-rotating with the gear shaft. The three spiral grooves communicate with each other and are open at both ends. The gear shaft of the rubber melt pump has a hollow center and a cooling circulation hole is opened on the gear shaft. Among the three-way spiral grooves, the spiral groove near the pump cavity that rotates with the gear shaft can discharge the material outward, the spiral groove in the middle perpendicular to the axial direction of the gear shaft holds the material and acts as a seal, and the one near the outside rotates with the gear shaft in reverse. The spiral groove can push the material back into the pump cavity to prevent a large amount of material from being discharged. The hollow gear shaft with cooling circulation holes passes through the circulation of the cooling medium, so that the gear shaft is not easy to overheat when the gear shaft is meshed, thereby avoiding the decomposition of the rubber. high temperature high pressure melt pump email@example.com