399results about How to "Improve the anti-leakage effect" patented technology

A sealing rubber closure is provided for use with a syringe/container specified by ISO (the International Organization of Standardization) and having a Luer nozzle to be inserted into a Luer-nozzle-receiving part of the sealing rubber closure. The Luer-nozzle-receiving part is configured, on a side of an inner end portion thereof, in an untapered cylindrical form to assure tight-fitted insertion of a free end portion of the Luer nozzle and, on a side of a Luer-nozzle-receiving opening thereof, in a tapered, substantially cylindrical form to assure tight-fitted insertion of a basal end portion of the Luer nozzle. A plastic film is laminated on the sealing rubber closure at least in an area of the Luer-nozzle-receiving part, where a free end of the Luer nozzle is to be maintained in contact with the sealing rubber closure.

The invention discloses an anti-leakage pulsator washing machine. The anti-leakage pulsator washing machine comprises a clutch, a first waterproof device and a second waterproof device. The clutch comprises a washing shaft and a dehydrating shaft, wherein the dehydrating shaft coaxially rotates around the washing shaft. The first waterproof device comprises a first water seal, an inner barrel flange and an outer barrel, wherein a first waterproof space is formed among the first water seal, the inner barrel flange, the dehydrating shaft and the outer barrel. The second waterproof device comprises an impeller and a second water seal, wherein a second waterproof space is formed among the impeller, the second water seal, the washing shaft and the dehydrating shaft. According to the anti-leakage pulsator washing machine, water which is poured in the process of washing is used for compressing air sealed in the first waterproof space and the second waterproof space, the compressed air effectively blocks the water and prevents a portion prone to leakage from contacting with the water in the washing machine, and therefore a condition that the clutch portion leaks water so as to enable the clutch to get rusty and corroded and influence the performance of the whole machine is effectively avoided. The anti-leakage pulsator washing machine is low in cost and good in anti-leakage effect.

The invention provides a glass flake clay paint, whose constituents include (by weight ratio) vinyl ester 55-65%, glass flake 25-35%, and addition agent 0.001-10%. The paint has good tenacity, fatigue resistance, antiseep property and hermeticity.

The invention relates to a flowerpot and a manufacturing method thereof, in particular to a degradable environmental-friendly flowerpot and a manufacturing method thereof. Components of the flowerpot comprise: plant fiber powder and a cementing compound, weight percentage of the plant fiber powder is 50 percent to 70 percent and that of the cementing compound is 30 percent to 50 percent; the plant fiber powder comprises rice hull powder, bamboo powder and soybean powder, and the weight percentage of the plant fiber powder is: 40 percent to 70 percent the rice hull powder, 10 percent to 40 percent the bamboo powder and 20 percent to 30 percent the soybean powder. Main processing technique is: mixing, dehydration, pressing, grinding and packaging. The environment-friendly flowerpot manufactured by the invention has the advantages of natural degradation, good stiffness, high strength and being uneasy to deform.

The invention discloses a lining layer of a bamboo-wound composite pipe and a preparation method thereof. The lining layer comprises a natural fiber fabric layer and a reinforced fabric layer in sequence from inside to outside in the radial direction of the pipe; a natural fiber fabric of the natural fiber fabric layer and a reinforced fabric of the reinforced fabric layer are both dipped with adhesive; the adhesive dipping rate of the natural fiber fabric is higher than 92%; the adhesive dipping rate of the reinforced fabric is higher than 71%; and the adhesive includes a resin and a curing agent. The method comprises the following steps: firstly, a demolding layer is prepared; one layer of adhesive is poured on the surface of the demolding layer, then, the natural fiber fabric is wound, and the adhesive infiltrates the natural fiber fabric to obtain the natural fiber fabric layer; one layer of adhesive is poured on the surface of the natural fiber fabric layer, the reinforced fabric is wound, the adhesive infiltrates the reinforced fabric to obtain the reinforced fabric layer; and then, the needed lining layer is obtained through curing treatment. The lining layer is excellent in leakage resistance and corrosion resistance, and satisfies the sanitation requirement; and the preparation method is simple in operation and high in efficiency.

The invention discloses a grouting system and a grouting method used for composite lining structure backfill and grouting.The grouting system comprises a one-way non-return suction cup, a one-way non-return grouting pipe, a water-stopping ring, a sealing plug and a connection pipe, wherein the one-way non-return suction cup is composed of a grouting disc and a non-return hole; the one-way non-return grouting pipe comprises a grouting pipe first end and a grouting pipe second end, a one-way valve is arranged at the grouting pipe first end, and the grouting pipe first end is communicated with a grout inlet of the grouting disc through a screw thread; the water-stopping ring is located on the outer wall of the middle of the one-way non-return grouting pipe; the sealing plug is connected with the grouting pipe second end through a screw thread; the connection pipe comprises a first end and a second end; the first end of the connection pipe is connected with the grouting pipe second end are connected through a screw thread, and the second end of the connection pipe is used for being connected with grouting equipment.The water-stopping ring is additionally arranged on the middle of the grouting pipe, and the water-stopping effect of a contact face between the outer wall of the pipe and a secondary lining structure can be effectively improved.The one-way non-return suction cup is arranged at the tail end of the one-way non-return grouting pipe, repeated grouting can be achieved, and the defect that a traditional grouting system cannot achieve repeated grouting is overcome.

The invention discloses an electrically operated valve device which comprises an electrically operated valve and a first connecting pipe connected with the electrically operated valve. The electrically operated valve is provided with a valve seat and a valve seat core. The valve seat core is plugged into an axial through hole of the valve seat to form a valve opening, the first connecting pipe is communicated with the valve opening, an outer peripheral wall of the valve seat core is welded and fixed with a peripheral wall of the axial through hole, and the upper end of the first connecting pipe and the bottom of the valve seat are welded and fixed. The upper end of the first connecting pipe of the electrically operated valve device is welded and fixed with the bottom of the valve seat, so that a formed weld joint can prevent a coolant permeated from a weld joint between the valve seat and the valve seat core from leaking, and the sealing performance of the electrically operated valve is improved.

The invention relates to a building formwork forming structure, a fastener used for the structure and a construction method, belonging to the formwork technology for concrete pouring in the construction industry. Its building formwork forming structure includes templates, tensioning screws, reinforcing ribs and clamps. The templates are arranged on both sides of the concrete filling cavity in parallel. There are one pair of tensioning bolt holes set opposite to each other on the formwork. The two ends of the pull bolts are matched, and the two ends of the pull bolts are threaded to connect a pair of frustum-shaped fasteners; the frustum-shaped fasteners are arranged on the inside of the two templates, and the large end faces of the frustum-shaped fasteners facing the outside are arranged There is an extended screw that can pass through the hole of the pull bolt on the template; the protruding part of the extended screw passes through the column on the outside of the template and is tightened and fixed by a conventional clamp. The structure and method of the invention reduce the waste caused by cutting the ends of the pull bolts in the traditional structure, and simultaneously simplify the construction and improve the efficiency.

The invention discloses a tunnel waterproof and drainage construction technology. The tunnel waterproof and drainage construction technology comprises the following steps of arranging an expansion water-stop strip on the whole section of a secondary lining construction seam of a tunnel, arranging a rubber water-stop band on the whole section of a settlement seam, arranging back-mounted water-stopbands at both the construction seam and the settlement seam, arranging longitudinal drainage blind pipes on the two sides of an arch foot, arranging a circumferential drainage blind pipe at the back of a secondary lining, and fully paving geotextile and waterproof boards, wherein the secondary lining adopts waterproof concrete with an impermeability grade of greater than or equal to S8 for the secondary lining. With the adoption of the tunnel waterproof and drainage construction technology, the waterproof effect of the construction seam can be ensured, and the anti-leakage performance can be improved.

The invention relates to a manufacturing process of a mold for manufacturing a carbon fiber box. In the process, a male mold is used. The manufacturing process comprises the following steps: step 1, spraying a gel coat on the outer surface of the male mold and curing to form a gel coat layer; step 2, coating the gel coat layer with surface felt to form a surface felt layer; step 3, gluing at least three layers of shortly-chopped felt on the surface felt layer to form a shortly-chopped felt layer, and curing the surface felt layer, resin and the shortly-chopped felt layer to form a glass fiber reinforced plastic layer; step 4, sequentially laying the shortly-chopped felt layer, a multi-axial cloth layer and a bordering cloth layer on the glass fiber reinforced plastic layer; step 5, filling in vacuum, namely sequentially laying de-molding cloth, a double-layered flow guide net, a flow guide belt, a flow guide pipe and a double-layered vacuum bag on the layer in the step 4, and after keeping pressure, filling to primarily form a female mold shell plate; step 6, gluing a steel frame and a steel plate; and step 7, after sticking the steel frame and the female mold shell plate for at least 48 hours, taking out the male mold from the female mold shell plate so as to manufacture the mold. The manufacturing process provided by the invention has the characteristics that the high-strength performance of the mold is guaranteed, the durability of the mold is improved, the service life of the mold is prolonged and the like.

The invention provides an inorganic foaming filling and reinforcing composition for a coal mine as well as a using method and application thereof. The inorganic foaming filling and reinforcing composition for the coal mine can be used as a novel safe plugging and reinforcing material, is especially suitable for plugging and reinforcing of the coal mine, and is the best water-proof, fire-proof, gas-proof, collapse-proof and accident-proof material.

The invention discloses a multifunctional burglary-resisting window and a section thereof. The multifunctional burglary-resisting window is composed of a window frame, window sashes, a jacket, a connecting rod pull ring, a wool strip and a flexible water baffle, wherein the rotary window sashes are uniformly distributed and arranged in one connecting frame, and the connecting frame is fixed in the window frame; upper and lower end surfaces of each window sash are respectively provided with a shaft hole; lower pin shafts are alternately installed in the lower shaft holes of every two window sashes; upper pin shafts are respectively installed in the upper shaft holes of the window sashes adjacent to the window sashes on which the lower pin shaft are installed; at least two upper pin shafts and lower pin shafts are respectively connected with a connecting rod; and each connecting rod is provided with a pull ring and a locker. The multifunctional burglary-resisting window not only has good burglary resisting property and permeability, but also has high leakage prevention performance, thus reaching state-specified inspection standard.

The invention discloses a method of anti-leak treatment on a petroleum drilling place by adopting a composite geo-membrane, relating to the technical field of adopting composite geotechnical materials to treat leakage of the petroleum drilling place. The method comprises the following steps of firstly, leveling the place; secondly, paving the composite geo-membrane; thirdly, paving a leakage pipeline: arranging the leakage pipeline at a position of easily having leakage; fourthly, paving a lime-ash stabilizing layer: with crushed stones, lime and fly ash as raw materials, paving the lime-ash stabilizing layer on the composite geo-membrane, wherein the lime-ash stabilizing layer comprise the following raw materials in percentage by weight, calculated by occupying the total volume of the raw materials: 8-10 percent of the lime, 10-12 percent of the fly ash and the balance of the crushed stones; and fifthly, paving a crushed stone surface layer: paving a 8-10cm crushed stone surface layer on the lime-ash stabilizing layer. By adopting the invention, waste mud and waste liquid of petroleum can be prevented from polluting the drilling place to enable idle land after drilling to be in second plowing, thereby having the effects of protecting land resources and lowering the land using cost.

The invention discloses a water proofing and leak repairing construction method for a sewage pipe network below the underground water level. The method is performed through the following steps that 1, sewage removal is performed on a pipeline; 2, leak points are found and marked; 3, a precipitation well is drilled, and precipitation processing is performed on a construction well point; 4, leaking stoppage is performed on the interior of the pipeline; 5, a grouting hole is drilled, and cement paste is backfilled and grouted. According to the method, a lining pipe does not need to be used, the construction cost is saved by 50% compared with the method that water proofing and leak repairing are performed on the sewage pipe network in a lining pipe mode, and the high application and popularization value is achieved; the actual available pipe diameter of the sewage pipeline cannot be reduced, and the phenomenon that the drainage capacity of the sewage pipeline is reduced due to water proofing and leak repairing cannot occur; by grouting on the exterior of the pipeline to form a grouting layer at the periphery of the sewage pipeline, the strata at the periphery of the sewage pipeline is reinforced, and effective protection on the sewage pipeline is formed to prevent formation stress from destroying the sewage pipeline.

The invention discloses a leakage-proof construction method combining a tower crane foundation and a basement floor. The method comprises the following steps: excavating an earthwork groove and building a brick membrane along an inner wall of the earthwork groove, laying a waterproof material, distributing a foundation reinforcement cage, mounting supporting feet of a tower crane, mounting a grounding device, pouring concrete, mounting standard sections of the tower crane and the like. The leakage-proof construction method has the advantages that problems in a utilization process of the tower crane that the standard sections of a tower body are immersed in water for a long period to cause potential safety hazards including rusting and the like and the water is deposited in an installation position of the tower crane for a long period are effectively avoided, a dismounting procedure of the tower crane is simplified and the stability of connection between the earthwork groove and the basement floor is increased after the concrete is poured into the earthwork groove; and the leakage-proof construction method has very good leakage-proof effect and is suitable for being applied to a tower crane construction process of various types of mid-rise buildings and high-rise buildings.

The invention relates to a leakage-proof structure and method for leakage maintenance of a toilet floor, and belongs to the field of building decoration. In order to solve the problems that existing maintenance is complex and poor in leakage-proof effect, the invention provides the leakage-proof structure and method for leakage maintenance of the toilet floor. The leakage-proof structure for leakage maintenance of the toilet floor comprises a ground base layer, the surface of the ground base layer is paved with a cement mortar combined layer, the surface of the cement mortar combined layer is paved with a ceramic tile layer, the surface of the ceramic tile layer is coated with a waterproof paint layer, the surface of the waterproof paint layer is paved with a self-leveling layer, the surface of the self-leveling layer is coated with multiple plastic floorings in a bound mode, all the plastic floorings are tightly arranged and paved, and the edges of every two adjacent plastic floorings abut against each other. The method comprises the steps that the toilet floor is cleaned, and the surface of the cleaned toilet floor is coated with the waterproof paint layer; self-leveling treatment is conducted; the toilet floor subjected to self-leveling treatment is covered with the plastic floorings in the bound mode; sealing treatment is conducted, and maintenance is completed. The leakage-proof structure and method for leakage maintenance of the toilet floor have the advantages that the leakage-proof effect is good, the service life is long, and the maintenance construction period is short.

The invention discloses a multifunctional phase change composite material and a preparation method thereof. The multifunctional phase change composite material contains the following components by mass percentage: 15-35% of EPDM, 40-75% of paraffin, 5-25% of expanded graphite, 5-25% of fire retardant, 0.5-5% of cross-linking agent, 0.01-5% of cross-linking aid, and 0-10% of processing aid; the mass percentage sum of the components is 100%. The phase change energy storage composite material disclosed by the invention has partial features of thermal vulcanized rubber, is moderate in elasticity and toughness, and good in sizing and antiseep effect, and meanwhile has the advantages of high latent heat of phase change, high conductivity coefficient, flame resistance and insulation, is simple inproduction process, and has good application prospect in multiple thermal design and heat management fields including new-energy vehicles, rail traffics, communication base stations, laser equipment,unmanned aerial vehicles and intelligent terminal equipment.