The medium to be conveyed is forced through the hose using external mechanical deformation with both types. The housing of the pump head supports the hose, and the rollers or shoes clamp it. Due to the rotation, the clamping point moves along the hose and thus propels the pumped medium. The elasticity of the hose material generates the suction vacuum.
Advantages and disadvantages of the peristaltic pump with shoes
Although peristaltic pumps with shoes have some disadvantages, they are the most widespread on the market. They are particularly suitable for applications that require high pressures. This is made possible, among other things, by the large contact surface between shoe and hose. It allows you to pump media with a pressure of up to 15 bar without any problems. In addition, this type of hose pump is particularly suitable for applications in continuous operation. However, the immense pressure area also has a disadvantage that should not be ignored. Since this creates enormous friction between the shoe and the hose, the power consumption of peristaltic pumps with shoes is significantly higher than that of pumps with rollers. On the one hand, this is due to the considerably higher starting torque and, on the other hand, to the greater friction during pumping. To counteract this problem and increase the hose's service life, large quantities of lubricant are necessary. Another disadvantage of this design is the limitations in terms of frequency and speed. This means that you are extremely limited in the maximum possible flow rate. In addition, strong pulsations occur when pumping with shoes. This means that connected pipelines and systems are easily damaged.
Peristaltic pump with classic rollers - advantages and disadvantages
The peristaltic pump with classic rollers, on the other hand, is much less widespread, even though it has some advantages compared to the variant with sliding shoes. The design with rollers means that there is almost no friction between the hose and the rollers. As a result, it offers you an extremely low starting torque, which at the same time also noticeably reduces the power requirement. Thanks to the minimized friction, hardly any lubricant is needed. Another advantage is the high-frequency range. This allows you to manage enormously large flow rates. In addition, the pump's hose with rollers is much easier to change, which saves you time when changing the hose. But the classic rollers also have disadvantages. While the friction between the hose and the rollers is minimized, the pressure area is also reduced to a minimum. This leads to massive problems, especially in applications that require high pressure. For this reason, hose pumps with classic rollers are only suitable for simple applications.
Advantages of the peristaltic pump with sliding shoes and classic rollers in combination
The combination of the two versions enables you to achieve powerful pumping with minimal maintenance and, at the same time, low energy requirements. NETZSCH has combined the advantages of the peristaltic pump with shoes and those of the version with classic rollers into a single pump, the PERIPRO peristaltic pump. Thanks to the XXL roller technology, the innovative design offers you numerous additional advantages. In addition to the low number of wearing parts. The peristaltic pump enables a high suction capacity. Pressures of up to ten bar are no problem. Thanks to its heavy-duty construction, the PERIPRO is particularly robust. The extra-large metal rollers and heavy-duty bearings enable you to pump the most demanding media with a high solids content while at the same time requiring little lubricant. In addition, the peristaltic pump from NETZSCH convinces with maximum ease of service. You can easily remove the cover and change the hose without expensive special tools. Additionally, thanks to the roller principle, the PERIPRO peristaltic pump requires up to 90 percent less lubricant. Another advantage of the pump is the extremely low energy costs. In the long run, savings of up to 30 percent are possible. Climate protection and sustainability are playing an increasingly important role. With the PERIPRO you will be pumping both safely and environmentally friendly in the future.
Advantages of PERIPRO peristaltic pumps at a glance
- High flexibility for a wide range of applications and media
- Robust design thanks to durable materials, integrated bearings and large rollers
- Significantly reduced energy consumption thanks to large roller diameter
- Low service effort and costs due to fewer wearing parts
- Insensitive to dry running
- Reversal of conveying direction possible
- High metering accuracy
- Low lubricant requirement due to innovative design with XXL rollers
- Extremely high suction capacity
The PERIPRO peristaltic pumps from NETZSCH are available in three versions: An industrial version, a food version and a chemical version. They combine all the advantages of peristaltic pumps with classic rollers and shoes and thus cover almost all your application areas.