3results about How to "Stable gas source" patented technology

The invention discloses an automatic sampling device for on-line monitoring of ground powder granularity, and relates to the field of carbon material powder preparation and testing, the automatic sampling device comprises a motor, a sampling tube, a screw rod and a first hoop; one end of the sampling tube is fixedly connected to the motor; the screw rod is located in the sampling tube, and one end of the screw rod is also fixedly connected to the motor; the sampling tube is connected with the motor connecting part; one end, close to the first hoop, of the sampling pipe is fixedly connected; the other end of the through pipe is connected with one end of the Venturi pipe; the other end of the Venturi tube is connected with one end of the three-way tube; the other two ends of the Venturi tube are respectively connected with a compressed air tube and a material tube; the compressed air generates negative pressure through the Venturi tube, so that material sampling is facilitated, the sampling efficiency is improved, and the sampled material is ensured to meet the concentration required by sample testing; the device adopts the motor as a power source, and the sampling tube and the screw are driven to rotate through the motor, so that the sampling accuracy and efficiency are improved.

The invention relates to an efficient light and superfine powder mixing and stirring device and method.The efficient light and superfine powder mixing and stirring device is characterized in that a guide cylinder, a first stirring device and a second stirring device are arranged in a lower tank body of a mixing tank, an outer shaft and an inner shaft located in the outer shaft are vertically and rotationally installed on the guide cylinder, and the outer shaft and the inner shaft penetrate through the bottom of the mixing tank; the first stirring device is fixedly connected with an inner shaft at the lower end of the guide cylinder, the second stirring device is fixedly connected with an outer shaft of the guide cylinder and installed at the lower end of the first stirring device, the first stirring device is driven by an outer shaft driving device to rotate and stir materials to move, and the second stirring device is driven by an inner shaft driving device to rotate and stir materials to move. The light superfine powder mixing device has the advantages that the mixing efficiency of light superfine powder materials is improved through the first stirring device, the second stirring device and the scraping device, the first stirring device can strongly suspend and stir the materials, the first stirring device, the second stirring device and the scraping plate are all driven by the variable frequency motor, the mixing time is shortened, and the mixing efficiency is improved.

This utility model discloses a dust collector hood for a cast iron machine, belonging to the field of iron and steel smelting and cast iron technology. The dust collector hood for a cast iron machine includes a hood body, a traveling member at the lower end of the hood body, a box installed on the outer wall of the hood body, a dust exhaust pipe connecting the box body and the hood body, a filter screen inside the box body, an exhaust fan installed on the side of the box body away from the hood body, and a collection box for collecting dust at the lower end of the box body. By installing the box body on the outer wall of the hood body and setting up the dust exhaust pipe, filter screen, exhaust fan, collection box, closing member, and back-blowing member, a complete dust removal system is formed. This design effectively solves the problem that existing dust covers can only block but cannot effectively collect and filter flue gas dust. The combination of the filter screen and the exhaust fan can efficiently filter and exhaust dust-laden gas, prevent dust from escaping, significantly improve the dust removal effect in the molten iron pouring process of the cast iron machine, and improve the workshop environment.