Purpose:
The batch-operated horizontal counterflow mixer is designed for mixing feedstuff ingredients. Horizontal Mixer may be used at feedstuff mills and in the fortifier production departments.
Specifications:
| Parameter |
ЗМГ-4000 |
| 1. Capacity, t/h |
10 - 12 |
| 2. Volume, m3 |
4,0 |
| 3. Mix homogeneity rate, % |
95 |
| 4. Mixing cycle, min. |
4 - 5 |
| 5. Loading time, sec. |
7 - 15 |
| 6. Discharge, min. |
3 - 4 |
| 7. Rotor speed, RPM |
29,2 |
| 8. Installed power, kW: |
| - mixer discharge slide valve |
0,25 |
| - mixer loading bin slide valve |
0,25 |
| 8. Installed power, kW: |
| - mixer rotor |
22,0 |
| - unloading screw |
3,0 |
| - gate valve of mixer unloading* |
0,25 |
| - gate valve of over-the-mixer hopper** |
0,25 |
| 9. Dimensions: |
| - length (without screw) |
4 055 |
| - width (with hopper) |
1 740 |
| - width (without hopper) |
1 430 |
| - height with over-the-mixer hopper |
4 860 |
| - height without over-the-mixer hopper |
2 375 |
| 10. Weight, kg: |
3 400 / 2 800 |
*Mixer design versions provide different gate valve drive by pneumatic cylinders (optionally**).
Structure and Operating:
Horizontal mixer consists of body (1), rotor (2), drive (3), frame (4), electric (pneumatic) gate valve of mixer unloading (5), unloading screw (6), ** over-the-mixer hopper (7), ** electric (pneumatic) gate valve of unloading over-the-mixer hopper (8) (**optionally).
Body-1 is the steel welded construction of semi-cylindrical shape. Windows closed with the covers are designed in the side walls of mixer body. Covers are interlocked with electric motor limit switchers and designed for repair works, visual inspection and periodic cleaning of mixer from the inside by scraping or pneumatic tools. The split body design allows the rotor to be dismantled. The rotor is a shaft on which there are 4 spiral blades: two inner and two outer with opposite winding. The rotor shaft is supported by bearings that are installed on the end walls of the mixer body. The drive provides a given rotor speed from the electric motor through a V-belt transmission and a gearbox. The frame is a welded structure for installing the mixer on the foundations. The unloading of the fodder mixture is carried out through the windows in the lower part of the housing, which are closed by a flap during the mixing process. Gate valve is represented by sheet, bent along the radius of mixer body. Gate valve is operated by electric or pneumatic drive. Gate valve opening may be regulated by limit switches. Unloading screw-6 is designed for compound feed mixture remove from under the mixer and transportation along the mixer to 1-1,5m distance for supply to the following mechanism (bucket elevator, conveyor).
Operation concept of the mixer is following: dosed components entering to the over-the-mixer hopper are storing up until a portion is reached. Further, products are quickly discharged to the mixer body for 8-12 seconds (short loading time prevents delamination of components), in the mixer body, components under rotation of the screw rotor are subjected to intensive back mixing by internal and external blades-spirals. On expiration of mixing time, gate valve opens and resulting mixture is directed by outer screws to the discharge point from the body and then mixture is unloaded from the mixer by screw.
