Transporting and collecting gas peristaltic pump tube

Transporting and collecting gas peristaltic pump tubeThe Derian 15 # lined PTFE peristaltic pump tube produced by Shanghai Derian Instrument Co., Ltd. is used. The pump tube is a standard 15 # pump tube with an inner diameter of 4.8mm, a wall thickness of 2.4mm, and an outer diameter of 9.6mm. Due to the PTFE lining, the Derian 15 # lined PTFE peristaltic pump tube can also transport corrosive fluids, with characteristics such as resistance to chemical reagent swelling, resistance to organic solvent dissolution, low surface adsorption, and suitability for transporting high-purity fluids, solving many problems with peristaltic pumpsDifficulty in transportation.

Peristaltic pumps are commonly used to transport liquids, gas-liquid mixtures, or suspended solids, and are less commonly used for transporting gases.Why is the application of peristaltic pumps for transporting gases not widespread enough? The main reason is limited by the material of the peristaltic pump tube. The peristaltic pump tube is placed between the pump head triangular wheel and the pump casing. The rollers on the wheel successively roll over the pump tube, and the fluid in the pump tube is squeezed out. After being crushed, the pump tube returns to its original shape, and a vacuum is formed inside the tube to suck in the fluid behind it. Peristaltic pump tubes are generally made of elastic rubber or other elastic materials. The pump tube must have good elasticity, otherwise it cannot quickly recover to its original state after being crushed and deformed, and cannot form a vacuum inside the tube. The fluid behind cannot be sucked in.

During the process of crushing the peristaltic pump tube, there will be significant friction between the roller and the pump tube, especially between the inner walls of the pump tube, generating heat. As a result, the temperature of the pump tube increases, leading to decomposition or precipitation inside the pump tube due to frictional heat. In general, if the fluid conveyed by the peristaltic pump tube is a liquid or liquid mixture, the fluid can carry away heat and also has a lubricating effect, so peristaltic pumps are widely used for liquids. But if a peristaltic pump tube is used to transport gas, it is equivalent to the peristaltic pump idling, and the pump tube is greatly damaged.

The PTFE lined peristaltic pump tube developed by Shanghai Delian Instrument Co., Ltd. consists of a double-layer structure, with an outer layer of silicone rubber that maintains the elasticity and creep of the pump tube. The pump tube is lined with a polytetrafluoroethylene (PTFE) layer, which has a smooth surface and low friction coefficient. The heat generated by the inner layer friction is low, and it will not be carried away by the fluid due to the transportation of gas, resulting in high temperature of the pump tube. Polytetrafluoroethylene (PTFE) has good chemical inertness and will not contaminate the gas inside the pump tube. Polytetrafluoroethylene has low surface adsorption and does not adsorb the components of the gas inside the pump tube, resulting in a decrease in gas concentration inside the pump tube. Polytetrafluoroethylene (PTFE) has good air tightness and high pressure resistance of pump tubes. These characteristics of PTFE determine that it is an excellent pump tube material for transporting gases. The PTFE lined pump tube developed by Shanghai Delian Instrument Co., Ltd. makes it possible for peristaltic pumps to transport gases.