43results about How to "Blocking gap" patented technology

The invention relates to a cement solidified waste. The cement solidified waste comprises 13-27% of converter slag, 8-12% of desulphurization ash, 25-32% of chromium slag, 5-15% of fly ash, 4-8% of cement, 4.5-6.5% of emulsified bitumen, 1-2% of fibers, and the balance of water. The converter slag and the chromium slag are mixed and are ground to 40-100 meshes, all raw materials are mixed and stirred until uniformity, the obtained mixture is put in a die, and is solified to form a mold, and the die is removed 24-36h later. The Cr<6+> leaching concentration is greatly reduced, and it is guaranteed that the concentration of Cr<6+> in a leaching concentration is lower than the concentration standard of national standard GB5085.3 danger waste upper limit.

The invention discloses bare concrete. The bare concrete is characterized by being prepared from, by weight, 5-10 parts of surface modified nano-boron fiber, 5-10 parts of kaolin, 10-15 parts of illite powder, 20-30 parts of gravel, 5-10 parts of vermiculite sand, 20-30 parts of silver sand, 40-50 parts of Portland cement, 1-5 parts of a compound additive and 20-30 parts of water. The compound additive comprises, by weight, 20-25 parts of a phosphate borate copolymer, 2-5 parts of zinc citrate, 1-3 parts of pyrophyllite powder, 1-3 parts of wollastonite powder, 2-4 parts of porous magnesium silicate, 0.5-1 part of a defoaming agent, 0.8-1.5 parts of polyaminopropyl biguanide, 0.5-2 parts of hydroxypropyl cyclodextrin, 1-3 parts of an activator and 80-100 parts of water. The invention further discloses a preparation method of the bare concrete. The bare concrete is high in compressive strength, good in corrosion resistance, impermeability and crack resistance and excellent in comprehensive performance, and production and application are safe and environmentally friendly.

The invention discloses a valve rod assembly on an electronic expansion valve. The valve rod assembly comprises a valve rod and a bearing pedestal. The valve rod is arranged in a through hole of the bearing pedestal. The valve rod assembly is characterized by comprising a rod body, an inner axial hole column is formed at the middle and lower end of the rod body, a first transverse hole column communicated with the inner axial hole column is formed on the outer wall of the bottom of the inner axial hole column, and a second transverse shaft hole communicated with the through hole is formed in the middle of the wall body of the bearing pedestal. The valve rod assembly can eliminate axial pressure born by the valve rod, moreover, the good sealing effect is achieved, and meanwhile the cost is reduced to meet the market requirements.

The invention discloses a door and window frame material structure, which mainly comprises a first frame strip, a second frame strip and a third frame strip. Ends of the same sides of the first frame strip and the second frame strip are respectively connected with two ends of the third frame strip, and the first frame strip is longer than the second frame strip. Due to the structural arrangement, the door and window frame material structure has the advantages that an assembling process of a door and window frame material can be simplified, gaps generated during usage of the door and window frame material can be covered, external dust and mosquitoes can be stopped from entering an indoor environment via the gaps, and the like.

The invention discloses a closure device for avoiding marginal bone loss around a dental implant. The closure device comprises an alveolar bone, a gum, the implant and a healing base. The gum is placed on the upper part of the alveolar bone, and the alveolar bone below the gum is provided with the implant. A healing membrane annular structure is arranged around the joint between the healing base at the bottom of the gum and the implant, the inside of the gum is provided with the healing base, and the implant stretches out of the gum through the healing base to be exposed to the oral cavity, the upper part of the implant is provided with the healing base, and the healing base forms a biological closure with the gum by the smooth surface. During a non-buried bone horizontal dental implant operation, a bone sealing ring can be formed around the implant under the healing base by utilizing a healing membrane to effectively block soft tissues from growing into the gap between the implant andthe bone wall, promote the metabolism of the edge or neck bone tissues and avoid the marginal bone loss. The device provides a new way of biological closure of the implant.

The present invention relates to a brush strip, which comprises a fixing part and a bristle part, the bristle part includes a plurality of bristle filaments, the plurality of bristle filaments are distributed along the width direction of the brush, and the plurality of bristle filaments are distributed along the width direction of the brush. One end of the bristle filament is fixed by the fixing part, and the bristle part further includes a soft sheet, and one end of the soft sheet is fixed by the fixing part. The present invention adds soft flakes to the bristles, on the one hand, it can increase the support force of the brush, and on the other hand, it also blocks the gaps between the bristles, making it more powerful and clean, and can also improve the vacuum degree during vacuuming.

The invention relates to the technical field of punching, and discloses a punching mechanism for automobile reinforcing plate machining. The mechanism comprises a punching table, and the punching table is provided with a punching head. The mechanism is characterized in that the punching table is provided with a punching groove located below the punching head; the upper part of the punching grooveis provided with a positioning groove; the two sides of the positioning groove are respectively provided with a fixing part; each of the fixing parts comprises a fixing base and a sliding groove; fixing blocks slidably connected with the sliding grooves is arranged inside the sliding grooves; a plurality of supporting shafts are arranged in the punching groove; each of the supporting shafts comprises a hollow outer shaft; a supporting table is arranged on the upper portion of each of the outer shafts; bulges vertical to the outer shafts are fixed to the lower portions of the supporting tables;inner shafts are vertically connected with the interiors of the supporting tables in a sliding mode; elastic parts fixedly connected with the outer shafts are arranged at the bottoms of the inner shafts; and pushing blocks for pushing the bulges are arranged on the inner shafts. The punching mechanism for automobile reinforcing plate machining is simple in structure, and plates around holes can be prevented from deforming greatly during punching, so that the machining efficiency of reinforcing plates is improved.

The invention relates to the technical field of punching, and discloses a punching mechanism for processing automobile reinforcement plates, which includes a punching table, on which a punching head is installed, and is characterized in that: the punching table is provided with a Stamping groove, the upper part of the punching groove is provided with a positioning groove, and both sides of the positioning groove are provided with fixing parts; Support shaft; the support shaft includes a hollow outer shaft, the upper part of the outer shaft is provided with a support platform, the lower part of the support platform is fixed with a protrusion vertical to the outer shaft, the inner shaft is vertically slidably connected to the inner shaft, and the bottom of the inner shaft is provided with a An elastic piece fixedly connected with the outer shaft; a pushing block for pushing the protrusion is arranged on the inner shaft. The invention has a simple structure, can prevent large deformation of the plate around the hole when the hole is punched, and improves the processing efficiency of the reinforced plate.

The invention discloses a fair-faced concrete, which is characterized in that it is made of the following raw materials in parts by weight: 5-10 parts of surface-modified nano-boron fibers, 5-10 parts of kaolin, 10-15 parts of illite powder, and 20 parts of gravel ‑30 parts, 5‑10 parts of vermiculite sand, 20‑30 parts of fine sand, 40‑50 parts of Portland cement, 1‑5 parts of composite additives, 20‑30 parts of water. The composite additive includes the following components by weight: 20-25 parts of phosphate-based boric acid-based copolymer, 2-5 parts of zinc citrate, 1-3 parts of pyrophyllite powder, 1-3 parts of wollastonite powder, porous silicon Magnesium acid 2-4 parts, defoamer 0.5-1 part, polyaminopropyl biguanide 0.8-1.5 parts, hydroxypropyl cyclodextrin 0.5-2 parts, activator 1-3 parts, water 80-100 parts. The invention also discloses a preparation method of the fair-faced concrete. The fair-faced concrete disclosed by the invention has high compressive strength, good corrosion resistance, impermeability and crack resistance, excellent comprehensive performance, and safe and environment-friendly production and use.

The invention relates to an acid color fixing agent, a preparation method and an application method thereof. The raw materials for the preparation of the acidic color fixing agent include: resin, 40%-50%; glacial acetic acid, 20%-40%; active body, 2%-8%; solvent, 5%-20%; deionized water, 10%-30%; and stabilizer, 3%-5%. Wherein said acidic color-fixing agent has the stability of color-fixing working liquid, no agglomerated particles, can avoid the generation of color-fixing spots in the fabric color-fixing process, reduces the color change of the fabric after color-fixing, improves the color fastness to washing, Color fastness to perspiration, etc.

The invention provides a socket connector. The socket connector includes: a plurality of contacts arranged apart from each other along the first axis direction, so as to electrically connect the plug connector and a substrate combined with the electronic device; The points are combined; the shell is combined with the insulating part; and the middle plate is combined with the insulating part, and the insulating part includes a first insulating part and a second insulating part, and the first insulating part and the insulating part The second insulating portions are spaced apart from each other along a second axial direction perpendicular to the first axial direction, and the first insulating portion and the second insulating portion are connected via the intermediate plate.

The present invention provides a heat insulation gasket comprising: a heat insulation sheet having both end portions adhered to each other to form a heat insulation layer therein in the longitudinal direction thereof; and an adhesive portion having one side attached to the heat insulation sheet and the other side attached to a door or a frame of the door.

The present invention provides a heat insulation gasket comprising: a heat insulation sheet having both end portions adhered to each other to form a heat insulation layer therein in the longitudinal direction thereof; and an adhesive portion having one side attached to the heat insulation sheet and the other side attached to a door or a frame of the door.

The invention discloses an anti-hydrophobic soil stabilizer and a preparation method thereof. The preparation method of the anti-hydrophobic soil stabilizer comprises the following steps in parts by weight: dissolving 3 parts by weight of oleamide and 6 parts by weight of triisopropanolamine in alcohol to obtain a mixture; then, reacting the mixture with 5 parts by weight of carbolic acid and adding water into a reaction kettle to synthesize the anti-hydrophobic soil stabilizer. The anti-hydrophobic soil stabilizer is applied to paving a road, performing phosphogypsum environment-friendly treatment, performing slope treatment and performing stone carving artwork repair. The anti-hydrophobic soil stabilizer disclosed by the invention can be used for improving a soil granule structure, lowering the soil particle interface activity, enabling the original cohesion inside the soil particles to recombine to produce irreversible cohesion, blocking soil mass gaps to enable the soil particles to lose capillary water absorption, directly mixing with the natural soil and lowering the consumption and saving over 50% of the energy resources by enabling a weight ratio of the anti-hydrophobic soil stabilizer to natural soil to be smaller than and equal to 0.1%, and can not cause pollution on the natural environment after being mixed into the soil.

The present invention provides an ultraviolet irradiation device capable of preventing a luminous tube from being affected by an alkaline atmosphere without adversely affecting measurement, and an analysis device provided with the ultraviolet irradiation device. By forming the first protective film (731) on the outer surface of the luminous tube (71) formed of quartz material, the luminous tube (71) is prevented from being affected by the alkaline atmosphere. Since the first protective film (731) can prevent the chemical reaction of the quartz material in the alkaline atmosphere and prevent the quartz material from eluting, the luminous tube (71) can be prevented from being affected by the alkaline atmosphere. Also, since the first protective film (731) is formed on the outer surface of the arc tube (71), it is possible to prevent a gap from occurring between the outer surface of the arc tube (71) and the first protective film (731). Therefore, the water sample entering the gap between the outer surface of the luminous tube and the first protective film does not mix into the water sample for the next analysis, and it is possible to prevent such mixing of the water sample from adversely affecting the measurement.