2results about How to "Adjust relative height" patented technology

The utility model relates to the field of steel pipe production, and discloses a deburring device for steel pipe production, which comprises a base, the top of the base is provided with four conveying devices which are symmetrically distributed left and right in pairs, and the outer side of each of the four conveying devices is fixedly connected with two conveying wheels which are symmetrically distributed left and right. The device comprises a base, a plurality of auxiliary wheels are rotatably connected to the top of the base, a supporting frame is fixedly connected to the top of the base, a lifting device is arranged in the supporting frame, a fixing frame is fixedly connected to the outer side of the lifting device, and a bolt knob is in threaded connection with the interior of the fixing frame; the outer side of the bolt knob is rotationally connected with a pressing block located in the fixing frame. The deburring device for steel pipe production has the advantages that the steel pipes can be stably conveyed, deviation is not prone to occurring, and the relative height between the scraper and the steel pipes can be adjusted.

This invention discloses a low-concentration dust generating device, including a mounting base. A dust-generating conical chamber, wider at the bottom and narrower at the top, is fixed on the mounting base. The upper end of the conical chamber is a dust outlet connected to a dust outlet pipe, which has several dust outlet nozzles. A dust-driving port connected to a compressed air source is located at the bottom of the conical chamber. An infusion tube is fixed to the bottom of the conical chamber, and its lower part is connected to the outlet of a syringe needle of an injection pump. The syringe needle contains a solution containing dust particles. The upper end of the infusion tube is an outlet extending vertically into the conical chamber. An ultrasonic atomizer is installed inside the conical chamber, with its atomizing head facing upwards and connected to the outlet of the infusion tube. This dust generating device can emit a lower concentration of dust airflow, making it suitable for simulating lower concentration dust environments.