In the field of dispensing, we often use screw dispensing valves and servo push dispensing valves. However, in actual contact, we have found that many customers confuse screw valves with screw rod dispensing valves. So what is the difference between these two types? Let's take a look at the analysis of the technical personnel!
The main components of the screw valve are the screw and the matching stator. Its uniqueness lies in the fact that the stator and the screw can form several sealed chambers. The glue liquid is pushed forward by the screw in the sealed chamber, and the larger the rotation angle, the more glue is produced, ensuring linear and stable glue production. It can be used for measuring glue production. Due to its rear feeding port and eccentric rotation, its structure is relatively large. If the screw does not rotate, even if the feeding port is pressurized, the glue will not come out.
The structure of the servo push rubber valve consists of a micro screw rod and a cylindrical sleeve. The screw rod shape is usually T-shaped thread, and the inner wall of the cylindrical sleeve is also smooth cylindrical. The feeding port is usually on the side wall of the cylindrical sleeve, so its structure can be relatively small. However, there is no sealed cavity in the middle, and when the feeding port is pressurized, the colloid can flow out directly, so it cannot be used for metering and can only be used for feeding