4results about How to "No dust" patented technology

The utility model relates to the technical field of fly ash collection, and discloses a fly ash collecting device which comprises an ash conveying scraper and an elevator which are obliquely arranged, a discharging hopper is arranged on one side of the top of the ash conveying scraper, a feeding hopper is arranged on one side, corresponding to the discharging hopper, of the bottom of the elevator, a discharging hopper is arranged on the right side of the top of the elevator, and the discharging hopper is arranged on the right side of the top of the elevator. A hose is flexibly connected between the discharging hopper and the feeding hopper, and a fly ash storage bin used for storing and collecting fly ash is further arranged on the side, correspondingly close to the discharging hopper, of the ash conveying scraper. According to the fly ash collecting device, fly ash can be scraped to the discharging hopper through the ash conveying scraper, the fly ash can fall into the feeding hopper from the discharging hopper along the hose under the action of gravity, then the fly ash entering from the feeding hopper can be lifted to a high position through the lifting machine, and the fly ash can be overturned and poured into the discharging hopper at the highest position; the dust collection device has the advantages of being sealed in the whole process, free of leakage and free of raised dust.

The utility model relates to an environmental protection type high pressure pulse line explosion type selective crushing device, include: pressure increasing device, energy storage device and discharge device, pressure increasing device is equipped with AC transformer, and energy storage device and discharge device are connected with AC transformer, discharge device includes control unit and electrode system that are connected in proper order in series, and control unit and electrode system all are connected with energy storage device, the utility model has the beneficial effect that: electrode top is hemispherical or conical, reduces the local concentration of electric field, prevents early breakdown, through electrode insulation design and sealing system, effectively prevent electrode from being eroded by vaporized metal wire, prolongs the service life of equipment, and simultaneously operating process is no dust, low noise, no harmful gas emission, accords with environmental protection requirement.

This utility model relates to the field of fresh air filtration technology, and in particular to a fresh air filter, comprising a drawer valve and a dust collection box installed inside the fresh air duct of an air conditioning unit. The drawer valve includes a removable valve body, a first filter screen and a second filter screen fixed at openings on both sides of the valve body, a pneumatically controlled vibrating device installed on the top surface of the valve body, and an elastic diaphragm installed at the outlet at the lower end of the valve body. This utility model's fresh air filter installs a vibrating device and a dust collection box on the drawer valve. The vibrating device repeatedly vibrates the fresh air filter, automatically removing accumulated dust from the valve body, ensuring the filter remains dust-free for extended periods and does not affect the fresh air intake efficiency. Simultaneously, personnel only need to periodically observe the dust collection box and empty it when it is full, reducing manual labor.

The invention relates to the technical field of glass bead fracturing propping agents, in particular to a long-acting high-flow-guiding glass bead fracturing propping agent which comprises high-strength silicon crystal glass beads. As a proppant for oil well and gas well fracturing, the proppant provided by the invention can meet the requirements of bearing strength under various depth geological conditions and has stronger chemical stability, the acid and alkali resistance of a silicon crystal glass material is more stable and lasting, the surface smoothness of the glass beads is far higher than that of ceramsite, the hydrophobicity is obviously stronger, and the surfaces of the glass beads are not easy to be stained with oil. Gaps among the glass beads are not easy to block, the long-term flow conductivity is better, the production efficiency can be obviously improved, and the glass beads are more regular in roundness and shape, more balanced in stress in all directions, better in environmental pressure resistance and better in flowing property, so that the construction operation is facilitated.