The K-type reciprocating feeder utilizes a crank and connecting rod mechanism to drive a base plate inclined at 5° to perform linear reciprocating motion on rollers. When the motor is activated, it drives the inclined base plate to move linearly back and forth on the support rollers via an elastic coupling, reducer, and crank linkage mechanism, evenly discharging coal onto conveying machinery or other screening equipment. This allows coal or other loose granular and powdery materials with low abrasiveness and viscosity to be uniformly discharged from the feeding equipment to the receiving equipment.

Main features of the K1, K2, K3, K4 coal feeders used in coal preparation plants: 
1. Reliable operation and long service life. 
2. Lightweight, compact size, and easy maintenance. 
3. Simple structure, reliable operation, and convenient adjustment and installation. 
4. Enclosed frame structure significantly enhances the rigidity of the frame. 
5. Equipped with a torque-limiting hydraulic coupling, enabling full-load startup and overload protection. 
6. Feeding capacity of up to 1200 tons/hour (for coal). 
7. Designed with a planar double-enveloping worm gear reducer, offering high load capacity and transmission efficiency. 
8. Adjustable gaps between side liners, inclined liners, and the base plate allow precise control of gap size, greatly reducing material leakage. 
9. Symmetrical arrangement of the drive device and the use of dual push rods ensure balanced force distribution, smooth transmission, and eliminate torsional sway during the reciprocating motion of the base plate. 
10. The base plate features vertical stiffeners and is supported by three full-length rollers, ensuring its rigidity and eliminating the issue of bending deformation during operation common in existing reciprocating feeders. 
11. Liners are composed of small wear-resistant steel plates, making replacement lightweight and easy. Additionally, worn liner sections can be replaced specifically based on actual wear conditions, enabling rational material use and reducing maintenance costs.



Working principle of the reciprocating coal feeder:
The K-type reciprocating feeder consists of a frame, base plate (feeding trough), transmission platform, funnel gate, and support rollers. Its transmission principle: When the motor is activated, it drives the inclined base plate to move linearly back and forth on the support rollers via an elastic coupling, reducer, and crank linkage mechanism, evenly discharging coal onto conveying machinery or other screening equipment. The K-type reciprocating feeder is available in two forms: with a funnel and an adjustable gate, or without a funnel and an adjustable gate. This machine is suitable for mines and coal preparation plants, uniformly loading coal from bunkers onto conveyors or other screening and storage equipment. Specialized K1, K2, K3, K4 coal feeders for coal preparation plants.