Mini peristaltic pumps are small, compact devices that are used to pump fluids in a variety of applications. Mini peristaltic pumps are self-priming, which means that they can start pumping fluids without the need for manual priming.They work by using a series of rollers that compress a flexible tube, creating a vacuum that draws the fluid into the pump. The rollers or shoes then release, allowing the tube to expand and push the fluid out of the pump. Mini peristaltic pumps are classified based on their flow rate, which is measured in mL/min or L/min. They can range from very low flow rates of a few mL/min to high flow rates of several L/min. They can also be classified based on their tubing size, which can range from very small diameters of a few millimeters to larger diameters of several centimeters. Mini peristaltic pumps can be further classified based on their application, such as in medical devices, laboratory equipment, or industrial processes.Mini peristaltic pumps are versatile devices that can be used in a wide range of applications, making them a popular choice for many industries. Peristaltic Water Pump,12v peristaltic pump,DC Peristaltic Pump,Aroma Humidifier Water Pump,Micro Peristaltic Pump Shenzhen DYX Technology Co.,Limited , https://www.dyxpump.com
In cold regions, wall insulation methods vary significantly, with two main types: external insulation and sandwich insulation. External insulation typically involves using a 190 mm thick concrete hollow block as the load-bearing structure. A 50 mm thick self-extinguishing EPS board is then installed on the exterior, reinforced with an alkali-resistant fiber mesh, and finally covered with a layer of plaster and paint to complete the exterior finish. This method is widely used but comes with its own set of challenges.
According to practices in developed countries, the most suitable insulation system for masonry structures is the sandwich insulation wall. This composite design is popular in many advanced nations. The structure consists of a 190 mm standard load-bearing block, followed by 40–50 mm of insulation material, a 10 mm air gap, and a 90 mm decorative block. Anti-corrosion steel mesh connects the inner and outer blocks, ensuring structural stability and durability.
One key advantage of this system is that the insulation material is placed between the two layers of the wall, protecting it from weather conditions and extending its lifespan. Additionally, the outer layer can be decorated freely without being constrained by the load-bearing part, allowing for more diverse architectural styles. The insulation layer also helps reduce temperature deformation and cracks in the inner wall, while preventing water leakage. Even if rainwater penetrates the outer layer, it drains through the cavity to a drainage hole, avoiding damage to the interior.
On the other hand, external insulation has its benefits. It effectively breaks thermal bridges, increases the surface temperature of the interior wall, and places heavy materials with high heat storage capacity indoors. This improves thermal stability and indoor comfort, especially in fluctuating temperatures. However, the insulation layer is bonded to the entire height of the wall, making it highly dependent on the adhesive’s durability. Over time, exposure to wind, rain, and sunlight can cause cracking or damage to the plaster, leading to potential structural issues.
Another common approach is the use of clay brick sandwich insulation, which includes a 240 mm load-bearing brick wall, a 50 mm polystyrene board, and another 120 mm brick wall. While this design meets energy-saving standards, it is becoming less common due to the phase-out of clay bricks. Some areas are now using concrete hollow blocks instead, but insulation is still mostly done externally. This method does not fully showcase the aesthetic potential of the blocks and is often applied in high-rise buildings in northern regions like Heilongjiang, where long-term performance is still being evaluated.
Overall, each insulation method has its pros and cons, and the choice depends on local climate, building type, and cost considerations. As construction technology continues to evolve, new materials and techniques may offer even better solutions in the future.
This article is reproduced from Quanhe Thermal Building Materials Factory in Dacheng County, Hebei Province: http://