5results about How to "Avoid direct flushing" patented technology

This invention discloses a device for wireless communication between underground manholes and the ground, relating to the field of urban underground infrastructure monitoring technology. It solves the problem that manhole covers and frames are mostly made of metal, which strongly shields electromagnetic waves, affecting data acquisition by monitoring equipment inside the manhole. The key technical points include: a manhole frame support: an open-frame structure adapted to the manhole cover; an adjustment component on the support to adjust the diameter of the support to accommodate differences in the manhole cover's diameter; and an equipment support: located on the support, forming a downwardly protruding load-bearing structure. The effect is that by fixing the transmitting antenna in the gap between the manhole cover and frame, the electromagnetic shielding effect of the cover and frame is avoided, significantly enhancing signal strength compared to inside the manhole, ensuring normal data communication between the monitoring equipment inside the manhole and the ground.

The utility model relates to the technical field of ventilation layer protection, and discloses an air conveying chute ventilation layer protection device which comprises a mounting frame, an angle adjusting mechanism and a buffer plate. With the adoption of the structure, the buffer plate is arranged, so that materials entering from the feeding hole can be effectively received, and direct scouring of the inlet materials to the breathable layer at the feeding hole is avoided, so that the damage speed of the breathable layer is reduced, and the service life of the breathable layer is prolonged; and the inclination angle of the buffer plate can be flexibly and accurately adjusted according to the characteristics of materials with different particle sizes, so that the optimal buffer effect is achieved, the impact force of the materials on the breathable layer is further reduced, and the service time of the breathable layer is prolonged.

This invention relates to the field of mine ecological restoration technology, and discloses a method and system for mine ecological restoration. The restoration method includes selecting an area with residual heat from underground coal fires on a mine slope where residual coal has spontaneously combusted as a restoration zone; reinforcing and stabilizing the slope of the restoration zone; laying a sludge substrate with a moisture content of 60%-80% on the stabilized slope surface, and using the residual heat from the underground coal fires for in-situ biological drying until the volume reduction reaches a preset threshold of 40%-60%; subsequently, covering the dried sludge substrate with a soil substrate layer and a soil microbial substrate layer to construct a composite growth matrix; and finally, maintaining vegetation on the slope. This invention cleverly combines the residual heat from abandoned mines with urban sludge treatment, achieving the harmlessness, reduction, and resource utilization of sludge, while simultaneously solving the problems of excessively high soil temperatures and difficulty in plant survival in mining areas, achieving the goal of ecological restoration through waste treatment and synergistic efficiency.

This invention belongs to the technical field of oil extraction equipment, and specifically relates to a high-pressure erosion-resistant skid-mounted chemical dosing device for oil wellheads. It includes a skid-mounted base, on which a chemical storage tank, a chemical delivery pump, and a mixing tank are fixedly connected. The inlet of the chemical delivery pump is connected to the chemical storage tank, and its outlet is connected to the mixing tank via a chemical delivery pipe. A cover plate is bolted to the top of the mixing tank, and a high-pressure inlet module is mounted on the cover plate. The device also includes an erosion-resistant module, comprising a rotating shaft rotatably connected to the center of the cover plate, and a round rod coaxially fixed to the lower end of the rotating shaft. A conical vortex tube is fixedly connected to the outer wall of the rotating shaft. This invention, through a mechanical structure linkage design, achieves high-pressure medium erosion buffering and non-powered mixing, solving the problems of insufficient erosion resistance, short lifespan, and inadequate chemical mixing effect in current equipment.

The utility model discloses a vegetation slope nursing structure for water and soil conservation, which belongs to the technical field of slope protection and comprises slope protection bricks, rain baffles are laid on the upper surfaces of the slope protection bricks and are laid along the length direction of the slope protection bricks, and the rain baffles are arranged at intervals and are divided into two layers. The lower-layer rain baffle is arranged under the interval position of the adjacent upper-layer rain baffles, and the rain baffles are of a V-shaped structure. The rain baffles are arranged at intervals and are of a V-shaped structure, rainwater collection is facilitated, direct scouring of the rainwater to slope soil is prevented, the rainwater is prevented from being accumulated on a slope, and the risk of slope collapse caused by accumulated water is reduced; the grass seed containing grooves are formed in the lower surfaces of the blocking strips at the lower ends of the interiors of the slope protection bricks and filled with grass seeds; and the lower surfaces of the barrier strips are attached to the grids to shield the grass seed placing grooves, so that the structure can protect grass seeds from being damaged by external factors, and the placement of the grass seeds can be synchronously completed when the side slope nursing structure is laid.