Progressive distributors are mainly divided into two types: slice block. In the lubrication system, slice distributors are mostly used, that is, each progressive distributor consists of a start slice, a stop slice at least three center slices. composition.

Progressive distributors are mainly divided into two types: slice block. In the lubrication system, slice distributors are mostly used, that is, each progressive distributor consists of a start slice, a stop slice at least three center slices. Composition, the number of center slices can theoretically be N slices, but no matter what the number is, it can be combined with the start slice stop slice to form a complete whole. Each center piece of the two-point progressive distributor has a working piston two oil outlets, the oil outlets are arranged at the left right ends of the center piece. The figure shows the working principle of the progressive distributor. In Figure a, the lubricant enters the upper oil inlet, after passing through the annular groove, reaches the left ends of the piston II the piston III pushes them to move to the right, so that the lubricant in the piston cavity is sequentially discharged the oil outlets 1 2 . When the piston III reaches the limit position on the right end, the lubricant entering the distributor reaches the right end of the piston I through the annular groove on the left, pushing the piston I to move to the left, so that the lubricant in the piston cavity is discharged the oil outlet 3; The process shown in Figure b is exactly the opposite in the direction of piston movement. Accordingly, the lubricant is discharged the oil outlets 4, 5, 6 in sequence. The function of the progressive distributor only needs to maintain a certain pressure for the lubricant entering the progressive distributor, the distributor will operate continuously. In addition, if the number of center pieces is more than 3 pieces, it can be deduced by analogy. As long as the piston in any center piece is stuck cannot move, all the pistons in the other center pieces will be blocked, the entire distributor will stop working. This ingenious concept makes it extremely convenient to monitor whether the oil output is normal. A proximity switch that senses the movement of the piston needs to be set on the center piece, which can be blocked on the piston