The selection of the pulse bag filter should be matched with the fan. Usually, the high-pressure pulse bag filter is selected, and the bag is required to be waterproof and oil-proof. The pulse bag filter can select the low pressure pulse bag filter in the case of the low air pressure fan, and the high pressure pulse bag filter is preferred when the high pressure fan is dusted, because the back pressure of the low pressure pulse bag filter is relatively low. When the dust of the high-pressure fan is treated, the pressure difference between the inside and the outside of the bag is relatively small, and the dust on the bag is not easily blown back, which affects the dust removal efficiency. When the moisture content of the raw material is large, you need to choose a tarpaulin bag. The processing air volume of the pulse bag filter is selected according to the fan volume of 1.2 to 1.5 times. The selection of the cyclone unloader is very important, and the domestic cyclone unloader is mostly designed with reference to the centrifugal dust collector. The centrifugal dust collector functions as dust removal, while the cyclone discharger mainly plays the role of material-wind separation. Compared with the dust removal, there are many materials, and the effect of selecting the lower spin type is better. The 38, 45 and 55 centrifugal dust collectors on the market have short spiral sections, and the centrifugal separation effect of the wind material is very general. It is not suitable for large air volume and is generally used in the feed air delivery system below 5th. The unloader used in pneumatic conveying draws on the characteristics of the centrifugal dust collector and lengthens the lower rotating section to achieve a good separation effect. The general separation efficiency is about 98, and the dust content in the tail wind is small. The cyclone unloader of this structure is suitable for single-line processing capacity of 5~15th. The selection of the cyclone unloader must be matched with the air volume of the fan. If the cyclone unloader cannot effectively handle the fan air volume, a large amount of powder will be The fan is sucked away, and the load of the pulse bag filter is increased, which affects the overall processing capacity of the system. Classification of gantry type Milling Machine Gantry Type Milling,Gantry Type Milling Machine,Gantry Milling,Gantry Milling Machine,Gantry machining center Jiangsu Hoston Machine Tools Co., Ltd. , https://www.hostoncncs.com
(1) Divided by form
According to whether the gantry is moving, it is divided into a gantry fixed table mobile type (about 90% or more) and a gantry mobile type (also called bridge type).
The bridge type gantry milling is characterized by a small footprint and a large carrying capacity. The gantry travels up to 20 meters, making it easy to machine long or heavy workpieces.
According to whether the beam moves on the column, it is divided into two types: moving beam type and fixed beam type; the beam moving on the elevated bed is called overhead type.
(2) Divided by system
It is divided into ordinary type and CNC type. There are also manufacturers to develop digital intelligent gantry milling with ordinary milling and CNC Milling – one button conversion, which is more flexible and practical.
(3) Divided by capability
It`s divided into light, medium and heavy (super heavy) gantry milling.
Performance characteristics
The gantry milling machine has sufficient rigidity, high efficiency, convenient operation, simple structure and comprehensive performance.
The specific performance characteristics vary according to the type, model and manufacturer, and have a lot to do with the technology used.Taking the SK series three-axis CNC gantry milling mentioned above as an example, its performance characteristics are:
1. The vertical milling head is equipped with TX400 heavy-duty gantry milling head, double rectangular guide rail, with strong rigidity;
2.Milling head mounted ball screw, pneumatic broach device, servo motor drive;
3.The side milling head is equipped with a V5 gantry milling head with an independent lubrication device. The lifting is driven by an ordinary reducer, and the frequency control is adopted;
4.Universal milling/CNC milling one-button conversion three-axis CNC system, which can be programmed and operated manually by the expansion panel, which is extremely implementable in the actual machining process;
5.The bed is advanced and retracted, the beam is up and down, and the vertical milling head is equipped with a Taiwan ball screw, which is driven by a servo motor;
6.With timing belt and synchronous wheel;
7.Hand-held electronic handwheel unit for easy three-axis tool setting;
8.Unique beam lifting safety interlocking device to ensure the repeatability of the machine tool;
9.The station standard cycloid pump group is continuously lubricated with low failure rate.