This technology involves the field of environmental protection, suitable for pulse jet baghouse. Fixture means comprises an end portion, to adjust the injection means, the ends of fixing devices. Characterized in that the fixing means can be used to install the injection device, the injection tube support, thereby controlling the center line of the nozzle and the bag cage of the error on the blow pipe. Try to make the center of the nozzle coincides with the center bag cage to ensure that the pulse jet effect and effectively eliminate the occurrence of broken bags situations.