7 results about "Air sparging" patented technology

To achieve a rainfall test for reproducing rain with weak rainfall intensity.SOLUTION: The rainfall testing device 10 includes a nozzle 20, a water supply unit 22 for supplying water to the nozzle 20, and an air supply unit 24 for supplying air to the nozzle 20. The nozzle 20 has an injection part 29 which repeats bending deformation by reaction force by injection of water and air from the water supply part 22 and the air supply part 24.SELECTED DRAWING: Figure 1

A system for biodrying biomass may include an air sparge system configured to supply air to biomass material. In one example, the system includes a slab, and the air sparge system is associated with the slab. The slab may define multiple bays to receive biomass material, and the air sparge system may supply air to the bays. The air sparge system may include one or more sparge pipes movable to accommodate emptying the bays of the biomass material. In another example, the system includes an enclosure defining a volume to receive biomass material, and the air sparge system includes one or more sparge pipes located in the volume and configured to supply air to a bottom of the enclosure. The sparge pipes may be configured to limit an intrusion of the biomass material.

A system includes a compressor for generating a first portion and a second portion of compressed air, and a pump submerged in water pool that is configured to pump a source of water. The system includes an air sparger operably coupled to the compressor that is configured to inject a portion of compressed air into the water pool. The system includes a sprayer arranged in the air section that is operably coupled to both the pump and the compressor, and is configured to collectively spray a combination of the source of water and the second portion of compressed air. The system includes a vacuum pump operably coupled to the air section with a vent line. The vacuum pump directs the contaminants out of the air section. The contaminants comprise one of per-and polyfluoroalkyl substances, volatile organic compounds, petroleum hydrocarbons, chlorinated compounds, and 1,4-Dioxane.

The invention discloses a device and method for reducing the springback rate of tunnel sprayed concrete and working face dust. The device comprises a spraying trolley, a spraying and collecting mechanism is installed at the end of a mechanical arm of the spraying trolley, and an accelerator spraying mechanism, an air spraying mechanism and a dust collector are arranged on the spraying trolley; the method comprises the steps that firstly, a spraying trolley is started to spray concrete to a tunnel working face; 2, primary filtering of dust on a working face and collection of springback materials; 3, secondary filtration and purification of dust on the working face; 4, re-injection of the rebound material; and 5, circulating the step 2 to the step 4 for multiple times until the construction is finished. The collecting cover with the top covered with the elastic filter screen is adopted, suction, collection and primary filtration of dust-containing gas can be achieved, collection of fallen concrete springback materials can be synchronously achieved, and secondary injection of the collected springback materials is completed through instantaneous powerful airflow generated by high-pressure air and the high-elasticity recovery rate of the elastic filter screen.

The invention discloses a multiphase flow particle jet nozzle structure, and belongs to the technical field of multiphase flow jet structures. The device comprises an outer pipe, an inner pipe, a shunting box, an isolating ring, an injection box and an air injection pipe array, the outer pipe and the inner pipe are coaxially connected, the inner pipe is arranged in the shunting box, the outer pipe is arranged outside the shunting box, at least one air injection inlet pipe is arranged on the lower portion of the shunting box, and the shunting box is connected with the injection box through the isolating ring; the injection box is provided with an inner pipe injection hole and a plurality of air injection pipe outlets, the inner pipe injection hole is connected with the inner pipe, the isolation ring is provided with a plurality of air injection pipe inlets and an air injection pipe array, the air injection pipe array comprises a plurality of air injection pipes, and the two ends of each air injection pipe are connected with the corresponding air injection pipe inlet and the corresponding air injection pipe outlet respectively. The problem that the quality of a wind tunnel test flow field is affected due to the accumulation phenomenon of solid particles such as ice crystals and sand dust in the jetting process at present is solved, and particle aggregation caused by advanced mixing in the nozzle is avoided.

A device may include a compressor for generating portions of compressed air, and a submersible pump submerged in the water pool. A device may include an air sparger operably coupled to the compressor for injecting a portion of the compressed air into the water pool. A device may include a sprayer submerged in the water pool, the sprayer being operably coupled to both the submersible pump and the compressor through a venturi connection, the sprayer being configured to collectively spray into the water pool a combination of water from the submersible pump and another portion of compressed air. A device may include a vacuum pump configured to charge an air section with a vacuum. The sprayer and the air sparger are configured to generate foam having contaminants, the foam being configured to release contaminants into the air section. The vacuum pump directs the contaminants out of the air section.

The application discloses a device and method for reducing rebound rate of tunnel shotcrete and dust on working surface, which comprises a spraying trolley, a spraying collection mechanism is installed at the end of the mechanical arm of the spraying trolley, a quick-setting agent spraying mechanism, an air spraying mechanism and a dust collector are arranged on the spraying trolley; the method comprises the following steps: 1, starting the spraying trolley to spray concrete to the working surface of the tunnel; 2, primary filtration of the dust on the working surface and collection of rebounded materials; 3, secondary filtration and purification of the dust on the working surface; 4, re-spraying of the rebounded materials; 5, repeatedly performing steps 2-4 until the construction is completed. The collection cover with the elastic filter screen on the top can realize suction, collection and primary filtration of the dust-containing gas, and can also realize synchronous collection of the falling concrete rebounded materials, and the high-pressure air generated instantaneous strong airflow and the high elasticity recovery rate of the elastic filter screen are utilized to complete the re-spraying of the collected rebounded materials.