106results about How to "Prevent reverse osmosis" patented technology

The invention relates to a helium ionized gas chromatographic analyzer for analyzing trace impurities in high-purity germane gas. The helium ionized gas chromatographic analyzer is characterized in that the helium ionized gas chromatographic analyzer comprises a chromatographic column oven, a temperature control system, a signal acquiring and processing system and a tail gas treatment system, wherein the signal acquiring and processing system comprises a helium ionized detector and a chromatographic column workstation, the temperature control system can achieve independent temperature control of all chromatographic columns and the detector and controls the temperature of the chromatographic columns to rise according to the time program, and the chromatographic column workstation comprises three switching valves (including one ten-way valve and two six-way valves), three chromatographic columns, four needle valves and three carrier gas paths, and the helium ionized detector is connected with the line of the chromatographic column workstation. The helium ionized gas chromatographic analyzer is used for analyzing trace impurities in high-purity germane gas, can achieve ppb-level impurity analysis through high sensitivity of the helium ionized detector and realizes total analysis of the germane impurities through once sampling.

The invention discloses a high-permeability diversion layer material and a preparation method thereof, and relates to the field of disposable sanitary products. The preparation method of the high-permeability diversion layer material is characterized in that by compound-superimposing and selecting an upper layer vertical net and a bottom layer direct laying net, matching coarse denier profiled cross-section fibers and fine denier hydrophilic double components in the upper layer vertical net, reasonably matching hydrophilic and water-repellent double-component fiber in the bottom layer direct laying net, selecting a hot air penetration thermal stabilization mode and reasonably selecting lustring and setting technological parameters of a hot pressing roll, the high-permeability diversion layer material with good permeability is prepared. Therefore, the technical problems of poor diversion performance, inability in storing liquid, poor transient sucking effect, complex technology, poor permeability and difficulty in quantity production of a diversion layer material are solved, and the effects of enabling the diversion layer material to have good abilities of transient suction property, diversion property, barrier property and temporary liquid storage and to have good effects of ventilation, moisture permeation and reverse osmosis prevention are achieved.

The invention discloses an embedded type superficial layer combination drainage pipe which comprises a filter pipe, a seal ring and a well pipe. Multiple filter holes are formed in the filter pipe andare used for collecting seepage water in a foundation pit; the seal ring is arranged on the top part of the filter pipe and is used for preventing the seepage water from seeping upwards; and the wellpipe is arranged on the top part of the seal ring and communicates with the filter pipe. The subsurface seepage water in the foundation pit is collected by adopting superficial layer combination drainage, the foundation pit is removed by adopting a water pump, and meanwhile, the seal ring effectively prevents the seepage water in a water collecting pit from inversely seeping upwards, so that precipitation construction can be carried out without the need of professionals, the cost is low, and the requirement on local superficial layer precipitation for underground construction can be met.

The invention discloses a recycled aggregate ecological permeable brick, which comprises a permeable brick body. The permeable brick body has a three-layer structure. Cavity layer, the bottom end of the permeable cavity layer is provided with a reverse osmosis layer, and the reverse osmosis layer is arranged on the soil foundation, and its production process includes: preparing recycled micropowder, preparing spoil particles, preparing plant material, stirring, Preparation of reverse osmosis layer and grass planting layer, preparation of water permeable cavity layer, pouring and demoulding, the invention facilitates the prevention of reverse osmosis of water through the reverse osmosis layer, and facilitates the planting of flowers and plants through the grass planting layer, which is ecological and environmentally friendly. It is prepared through the steps of pouring into molds, steam curing, drying, extrusion, demoulding, impregnating external admixtures and other steps. The invention has good water permeability; natural color, ecological and environmental protection; high strength, not easy to break, and good durability; The production process is energy-saving and environment-friendly, and the production process is simple.

The invention discloses a reverse osmosis preventing absorbing article and a manufacturing process thereof. The reverse osmosis preventing absorbing article comprises an absorbing article main body, a leg anti-leakage elastic component, an anti-leakage sheet, a waist elastic component, a fixing waist plaster and a fixing waist plaster fitting piece, wherein the leg anti-leakage elastic component and the anti-leakage sheet are respectively arranged on two sides of the absorbing article main body in the longitudinal direction; the waist elastic component is arranged on the absorbing article main body; the absorbing article main body comprises a water permeable surface layer, an absorbing core layer and a waterproof bottom layer which are successively arranged from top to bottom; the absorbing core layer comprises a lower absorbing core layer and an upper absorbing core layer which is compounded onto the lower absorbing core layer; the shape of the upper absorbing core layer is matched with that of the lower absorbing core layer; the upper absorbing core layer is provided with a through cavity which penetrates through the upper absorbing core layer from the thickness direction of the upper absorbing core layer along the length direction of the upper absorbing core layer; the length of the through cavity is greater than half of the length of the absorbing core layer and is smaller than the length of the absorbing core layer; the side wall of the through cavity is downwards inclined in the opposite direction; and the through cavity is matched with the upper surface of a position, which corresponds to the through cavity, of the lower absorbing core layer to form a reverse osmosis preventing region.

The invention discloses a thin and soft composite-core paper diaper. The thin and soft composite-core paper diaper comprises an elastic water-permeable layer, a permeation water locking layer and a dehumidifying water locking layer, wherein the elastic water-permeable layer is a porous hot-blast-adhesive-bonded non-woven fabric layer, the permeation water locking layer is a hydrophilic nonwoven fabric layer, the dehumidifying water locking layer is a thickened hydrophilic nonwoven fabric layer, the elastic water-permeable layer and the permeation water locking layer are connected together through spunlace composite finishing, and the dehumidifying water locking layer is interwoven with the permeation water locking layer through yarn laying. The thin and soft composite-core paper diaper has the advantages that the water absorption feature of the paper diaper can be kept while a water locking effect is achieved, reverse osmosis of absorbed liquid is prevented, and the softness and comfortableness of the paper diaper are increased due to the fact that the surface layer of the paper diaper has certain elasticity.

The invention discloses a waterproof keel for laying photovoltaic panel units and a waterproof photovoltaic panel. The waterproof keel comprises longitudinal drainage keels and transverse drainage keels, keel bodies of the longitudinal drainage keels are provided with first longitudinal water guide grooves, second longitudinal water guide grooves, third longitudinal water guide grooves and supporting faces, and the transverse drainage keels are internally provided with transverse water guide grooves communicating with the second longitudinal water guide grooves and the third longitudinal waterguide grooves; and the two adjacent sides of the photovoltaic panel units are correspondingly in lap joint with the supporting faces and the transverse water guide grooves and are fixed to the firstlongitudinal water guide grooves. Sealants are arranged between the supporting faces and the photovoltaic panel units in a pressing mode. Connecting grooves sinking towards the supporting faces are formed in the keel bodies connected end to end, and waterproof buckle covers bonded with the connecting grooves, the second longitudinal water guide grooves and the third longitudinal water guide grooves in a sealed mode are arranged in the connecting grooves and flush with the supporting faces. The waterproof effect is good, and the power generation effect of the photovoltaic panel units is not affected.