11results about How to "Avoid direct flushing" patented technology

The invention belongs to the technical field of sealing regulating valves, and discloses a magic block type pressure reduction hidden spherical sealing regulating valve which comprises a valve body, a liquid inlet cavity and a liquid outlet cavity are formed in the valve body, a valve seat is arranged between the liquid inlet cavity and the liquid outlet cavity, a multi-stage trapezoidal valve cage is arranged above the valve seat, and the multi-stage trapezoidal valve cage is arranged outside a valve clack in a sleeving mode and pressed on the valve seat. A plurality of flow guide holes with the same specification are evenly formed in the cage wall of the multi-stage trapezoid valve cage in the circumferential direction, the flow guide hole in the lowest position is higher than the sealing face of the valve seat, so that the multi-stage trapezoid valve cage protects the sealing face of the valve seat, and a first anti-scouring layer is formed. A sealing ball protrusion is arranged in the center of the lower portion of the valve clack, and a circle of downward annular protrusion is arranged on the periphery of the sealing ball protrusion. The valve seat is provided with a ball concave part and an annular concave part corresponding to the sealing ball protrusion and the sealing annular protrusion, and the annular protrusion is a second anti-scouring layer. The high-pressure-difference drain regulating valve is reasonable in design, effectively improves the reasonability of the structure of internal parts of the drain regulating valve, greatly improves the sealing performance, can achieve zero leakage and scouring resistance, and prolongs the service life.

The invention relates to an offshore wind turbine large-diameter steel pipe pile scouring solidified soil cover protection and construction method, a reinforcing steel cylinder is arranged in a scouring pit at the bottom of a wind turbine steel pipe pile, the wind turbine steel pipe pile can be effectively protected, and direct scouring of water flow to the wind turbine steel pipe pile is avoided; an annular reinforcing mesh is arranged below the solidified soil quilt, and underwater concrete is injected into the annular reinforcing mesh, so that the injected underwater concrete is prevented from being scoured and taken away by water flow, and the durability of the reinforced structure is improved; the solidified soil is integrally put down in place through the suspension support, so that the situation that wrinkles appear when the solidified soil sinks to the water bottom is avoided, and it is effectively guaranteed that the solidified soil covers the scouring pit; the fan steel pipe pile is sleeved with the suspension support through the floating steel cylinder, the suspension support is controlled to float and sink along the fan steel pipe pile by adjusting the air bag, and the problems of hoisting and positioning are effectively solved.

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 invention relates to a water-permeable brick for a water-permeable dam and the water-permeable dam. The water-permeable brick for the water-permeable dam comprises a brick body and an adsorption assembly which is arranged on the brick body and is used for adsorbing pollutants in a water body. According to the water permeable brick, the adsorption assembly is arranged in the brick body, pollutants contained in water penetrating through the brick body are adsorbed by the adsorption assembly, the content of the pollutants in the water penetrating through the water permeable brick is reduced, and therefore the water permeable brick has a high water quality purification effect. When the water-permeable bricks are laid on the water-permeable dam, the water-permeable bricks are used for covering the surface of the water-permeable dam, the water body is prevented from directly scouring the dam body of the water-permeable dam, and therefore the problem that the dam body structure is damaged due to water body scouring is solved through the water-permeable bricks. Due to the water permeable function of the water permeable bricks, the water permeable function of the water permeable dam is not affected, and the water permeable dam can have higher water quality purification capacity by utilizing the higher water quality purification capacity of the water permeable bricks, so that the water quality of a water body is improved, and the environment quality is improved.

The utility model relates to the technical field of municipal engineering, in particular to a rainwater pipe culvert river-entering structure under an urban complex embankment environment, which comprises embankments, an overhaul well and a water outlet well, the embankments are arranged on two sides of a river channel, and rainwater pipe culverts are embedded in the embankments; the overhaul well is arranged in the embankment and located at the joint of the embankment and the river channel, and the rainwater pipe culvert is communicated with the upper portion of the overhaul well; the water outlet well is arranged in the river channel, and the water outlet well is communicated with the lower part of the overhaul well through a drainage section; the rainwater pipe culvert is provided with the overhaul well and the water outlet well, the outlet of the rainwater pipe culvert is flexibly adjusted by adjusting the position of the water outlet well under the condition that an original pipeline is not adjusted, meanwhile, the overhaul well has the energy dissipation function, the water flow state can be adjusted, direct scouring of water flow at the outlet to an original embankment foot in the drainage period is avoided, and hiding of an estuary is achieved; and the overall landscape effect is improved.

The invention relates to a preparation method of a water treatment membrane, in particular to a preparation method of a water treatment membrane adopting hollow fibers as a support body and a polyamide layer as a separation layer. According to the novel preparation method of the hollow fiber water treatment membrane, two-stage hydrophilic modification is designed, in the first stage, carboxymethyl cellulose is selected to be used for modification in a polyamide layer, and in the second stage, amino-containing ethylene glycol is selected to be used for hydrophilic modification on the inner surface of the polyamide layer. The two-stage hydrophilic modification well solves the problems of hydrophilic progression and easy falling of grafted substances.

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.

The invention belongs to the technical field of drain stop valves, and discloses a hidden spherical sealing anti-scouring drain stop valve which is characterized in that an outer ring of a valve seat is thin, an inner ring of the valve seat is thick, the valve seat is gradually increased in a step shape to form three steps, a first-step seat, a second-step seat and a third-step seat are sequentially arranged from low to high, the bottom end of an anti-scouring sleeve is pressed on the first-step seat, and the periphery of the bottom surface of a valve clack downwards forms an annular bulge; the center of the bottom face of the valve clack downwards forms a ball protrusion. When the valve is in a closed state, the annular protrusion is pressed on the second-step seat, and the ball protrusion is pressed on the inner edge of the third-step seat. By means of the special structure of the spherical sealing valve clack, the annular protrusion on the periphery of the valve clack protects the sealing face of the valve clack, when the valve clack is opened, fluid is prevented from directly washing the sealing face of the valve clack, and when the valve is closed, the sealing face of the valve clack and the valve seat is covered by the annular protrusion through close fit of the spherical protrusion of the valve clack and the valve seat. And a high-pressure-difference and high-flow-rate medium is prevented from directly and seriously washing a sealing surface for a long time, the service life of a product is prolonged, and the use cost of a user is reduced to the maximum extent.