Injection increasing device for water injection well

The water injection well augmented injection device comprises an inner pipe and an outer pipe arranged on the outer side of the inner pipe in a sleeving mode, an outer connecting sleeve is arranged at the bottom of the outer pipe, a packer is arranged between the outer connecting sleeve and the inner wall of a water injection well in a setting mode, and a first one-way valve and a plugging block are sequentially arranged in the outer connecting sleeve from bottom to top; a first water delivery channel is formed between the inner pipe and the outer pipe, a second one-way valve is arranged in the inner pipe and connected with a sucker rod through a polish rod, the polish rod and the inner pipe are sealed and slidably connected, a first injected water outlet communicated with the first water delivery channel is formed in the inner pipe, and the outer pipe is connected with an oil pipe. A first injection water inlet and a second injection water inlet which are communicated with each other are respectively formed