26results about How to "Guaranteed compressive strength" patented technology

The utility model discloses an easy-to-clean durable type disc filter element, including first support post and a plurality of first filter disc, the first filter disc is sleeved in the outside of first support post, the first filter disc includes first support steel ring, first inner filter screen and first outer filter screen, first inner filter screen and first outer filter screen all are symmetrically arranged in both ends of first support steel ring, first outer filter screen is located the outside of first inner filter screen, the middle part of first support steel ring, first inner filter screen and first outer filter screen is equipped with first connecting assembly, the utility model provides an easy-to-clean durable type disc filter element, and its structure is stable and reliable, has good structural strength, and first inner filter screen and first outer filter screen are supported through first support steel ring, guarantee its pressure strength, and can quick assembly and disassembly, convenient cleaning, more simple.

The present application relates to a kind of oil pipe dosing device, to solve the problem of traditional dosing method medicament uniform dispersion to the bottom of oil pipe.The device includes oil pipe, adjacent oil pipe male oil pipe joint and female oil pipe joint are threadedly connected;N connection flat tubes, which are closely attached to the outer wall of the oil pipe, the n connection flat tubes are connected into a complete annular sleeve in the circumferential direction of the oil pipe, and n is an even number;Wherein, from the female oil pipe joint to the extension direction of the oil pipe body, the width of the inner cavity of the connection flat tube gradually decreases along the radial direction of the oil pipe, so that the inner cavity of the connection flat tube forms an expanded diameter structure at the connection of the upper and lower adjacent oil pipes;The connection flat tube is made of wear-resistant and corrosion-resistant composite material, and an antistatic coating is provided on the outer side wall of the connection flat tube.The present application does not need to modify the existing oil pipe structure, and the modular design improves the installation efficiency, is suitable for thick oil, high sulfur / wax oil well, can reduce the load of pumping equipment, and prolong the service life of oil pipe.

The invention discloses a sealing structure and method for wide-temperature pressure sensor testing, and relates to the technical field of pressure sensor testing. A high-strength locking mechanism is formed by the elastic assembly, the sleeve and the plugging ball, rapid and efficient disassembly and assembly operation can be achieved, and then the testing efficiency is improved; the plugging ball is matched with the through hole and the second groove, so that the locking function of the movable part is realized, and the stability of the sealing structure in the testing process is ensured; the limiting component arranged on the clamping groove can prevent the sleeve and the plugging bead from falling off due to loss of limitation; the clearance fit between the lower convex cavity and the movable part ensures the stable movement of the movable part in the body, and reduces the risk of leakage. During testing, locking and unlocking of the movable part are achieved through simple sleeve pressing and loosening actions, testing operation is facilitated, and the testing efficiency is improved; through cooperation of the plugging bead, the through hole and the second groove, an efficient and stable sealing effect is achieved, and the problem that the wide-temperature pressure sensor is prone to leakage during testing is solved.

The utility model discloses a pressure-resistant and leakage-proof liquid nozzle adding bag which comprises a bag body (1) and is characterized in that the bag body (1) is formed by hot melting and pressing the edges of a front packaging film layer and a rear packaging film layer, and a liquid outlet nozzle (3) which is pressed between the two packaging film layers in a hot melting and sealing mode is arranged in the middle of the top end of the bag body (1). The packaging film is formed by compounding a PET layer (4), a nylon film layer (5), an aluminum foil layer (6), a nylon film layer (5) and a PE layer (7) which are sequentially arranged from outside to inside. The packaging film is arranged in the shape of an isosceles trapezoid with the small upper portion and the large lower portion, the hot-melting pressing width of the top edge of the packaging film is 10 mm, the hot-melting pressing width of the bottom edge of the packaging film is 16 mm, and the hot-melting pressing widths of the two side edges of the packaging film are gradually changed from 10 mm to 16 mm from top to bottom. According to the utility model, not only can the compression resistance be improved, but also the waterproof and anti-leakage performance is better, the internal liquid can be better used up, and the safety is higher.

The application discloses a kind of reinforced toughened panel concrete and preparation method thereof, belong to panel concrete preparation technical field.The reinforced toughened panel concrete of the application includes the following components: low-heat portland cement, fly ash, slag powder, silica fume, fly ash microbeads, sand, water, copper-plated steel fiber, polyethylene fiber, high-performance water reducing agent, hydration temperature rise inhibitor and calcium-magnesium composite expansive agent.The reinforced toughened panel concrete of the application can realize the whole process performance optimization of panel concrete from micro defect inhibition to macro toughening and crack control, significantly improve the compressive strength and axial tensile strength and crack resistance of panel concrete, effectively solve the intrinsic brittleness and early shrinkage cracking risk of ultra-high strength concrete.

A PVC (polyvinyl chloride) floor with a miniature heat dissipation structure relates to the technical field of floors and comprises a bottom plate, a plurality of main grooves are uniformly formed in the upper surface of the bottom plate, branch grooves are formed between adjacent main grooves, and the adjacent main grooves are communicated through the branch grooves; the supporting part is located above the bottom plate and comprises auxiliary supporting layers and a supporting layer, and the auxiliary supporting layers are connected to the upper surface and the lower surface of the supporting layer correspondingly; the heat conduction part is located above the supporting part and comprises a buffer layer and a heat conduction layer, the heat conduction layer is located above the supporting part, and the buffer layer is located between the supporting part and the heat conduction layer; the wear-resistant layer is positioned above the heat conduction part; the main groove serves as a core airflow channel, the branch grooves form dense net-shaped branches, the heat dissipation area is further enlarged, cold air enters the main groove through the branch grooves and then is heated to rise, natural convection is formed, static heat conduction is converted into dynamic heat dissipation, and the heat dissipation efficiency is improved.

The invention discloses a centrifugal toothed disc crusher, which belongs to the technical field of crushers, and comprises a fixed cone disc, a movable turntable, a main shaft and a frame, wherein the fixed cone disc is arranged above the movable turntable, the fixed cone disc is fixedly arranged on the frame, the main shaft is rotatably connected with the frame, the upper end of the main shaft is connected with the movable turntable, a pulley is arranged on the main shaft, a feed port is arranged above the fixed cone disc, the interior of the fixed cone disc is hollow, a plurality of fixed crushing teeth are arranged on the inner wall of the fixed cone disc, the height of the fixed crushing teeth decreases from the inside to the outside along the radial direction of the fixed cone disc, a partition block is arranged in the middle of the movable turntable, the movable turntable is provided with rotating crushing teeth whose height decreases from the inside to the outside along the radial direction, a plurality of material-rushing plates are arranged on the movable turntable, and a discharge port is arranged between the outer edge of the movable turntable and the fixed cone disc. The invention has the advantages of large compressive strength of crushed materials, small discharge particle size and uniform discharge.

The soundproof and mute wooden door comprises a door leaf, the door leaf comprises a door core and a door frame, the door core is hollow, a plurality of cellular boards are arranged in a cavity of the door core, the side walls of the cellular boards are fixedly connected with the inner wall of the cavity of the door core, and a triangular prism-shaped hole is defined by every two adjacent cellular boards and the inner wall of the cavity of the door core; and a plurality of sound insulation plates are mounted on the inner wall of the cavity of the door core. The compressive strength of the door core is guaranteed on the premise that the sound insulation effect of the door core is improved.

This application provides a thermal insulation foam, a method for preparing the thermal insulation foam, and a refrigeration device. The thermal insulation foam has a honeycomb structure with multiple honeycomb pores penetrating the foam along a first direction parallel to the centerline of the honeycomb pores. The density of the thermal insulation foam decreases along a second direction perpendicular to the first direction. This allows for the simultaneous optimization of low density and high compressive strength in the thermal insulation foam.

The utility model discloses a bridge pier column reinforcing structure, and belongs to the technical field of bridge reinforcing. The steel casing is arranged on the outer side of the bridge pier, so that the pouring cavity is formed between the steel casing and the bridge pier, and pouring is convenient; pouring is conducted in a pressurized pouring mode, and the phenomenon of pouring hollowing of the poured pier is avoided; connecting structures are arranged at the two ends of the steel casing, so that the steel plate is prevented from slipping in the pouring process; by arranging the stiffening ribs, the radial compressive strength of the steel casing in the pouring process is guaranteed; by implanting the steel bars, it is ensured that the steel pile casing and the original structure form a jointly-stressed whole, and the overall performance of the reinforced structure is improved; due to the arrangement of the steel casing and the stiffening ribs, enough strength and rigidity are provided, and the construction requirement of pressure grouting is met; the steel protection cylinder is formed by splicing the semicircular shells, the splicing positions are connected in a welding mode, the steel protection sections are spliced in the length direction, splicing is conducted in a mortise and tenon joint mode, and the construction efficiency is improved.

A production method of a waste recycling decorative integrated board, comprising an inner board layer, a steel skeleton layer, a construction waste filling layer, a thermal insulation layer and a decorative surface layer, wherein the inner board layer and the thermal insulation layer are arranged relative to each other to form a hollow structure, the steel skeleton layer is arranged in the hollow structure formed by the inner board layer and the thermal insulation layer, and the construction waste filling layer is filled and arranged between the inner board layer, the thermal insulation layer and the steel skeleton layer, and the construction waste is recycled and classified for use through a specific screening and processing process, and the production is carried out by combining the formula of the construction waste filling slurry, and the slurry is poured into the hollow structure of the main board body to form an integrated board product. The present invention uses recyclable construction waste as aggregate, realizes the reuse of resources, and can use different construction wastes according to the different thickness of the thermal insulation layer required in different places. At the same time, it has light weight and is easy to install, which reduces the cost of production, transportation and installation.

The invention discloses a compound containing single-layer graphene oxide and a preparation method and application thereof, and belongs to the technical field of building materials.The preparation method comprises the steps that a graphene oxide precursor is subjected to water washing and ultrasonic treatment and then subjected to ball milling together with building material powder, and the compound formed by attaching the single-layer graphene oxide to the surface of the powder is obtained; the compound is applied to preparation of cement-based materials. According to the preparation method disclosed by the invention, the subsequent treatment of the graphene oxide precursor is changed into ball milling, so that the dispersity of the single-layer graphene oxide attached to the surface of the powder is improved; the compound is compounded with an air entraining agent and a water-soluble filler to form an additive, and the additive is added into a cement-based material to improve the performance of the cement-based material.

The utility model discloses a high-pressure hydrogen precooling heat exchanger which comprises a cover plate, gas side partition plates, liquid side partition plates and a bottom plate, and the gas side partition plates and the liquid side partition plates are alternately arranged between the cover plate and the bottom plate in an array mode. The cover plate, the gas side partition plate, the liquid side partition plate and the bottom plate are integrally formed through vacuum brazing or pressure diffusion welding and are of a cylindrical structure. The heat exchanger is reasonable in structure, good in pressure resistance, high in reliability and high in heat exchange efficiency.

The utility model discloses ecological paving stone of imitating stone surface relates to paving stone technical field. Including the pavement base plate, the bottom surface is used to lay on the ground surface base soil, a plurality of processing filling body, even fixed in the pavement base plate top, and the drainage structure is reserved between two adjacent processing filling bodies, is provided with imitating stone convex between two adjacent drainage structures, and there is height difference between imitating stone convex and drainage structure, and imitating stone convex is fixed in the top of processing filling body, along with rainwater contact imitating stone convex's surface, and rainwater flows along the slope of imitating stone convex to adjacent drainage structure, and through the water gap of drainage structure rapid penetration to the base soil below the pavement base plate, the utility model discloses the slope design of imitating stone convex and the synergistic effect of drainage structure, effectively guide rainwater along the slope rapid convergence to the passageway gap, and then through the discharge port of gradually increasing aperture smooth infiltration base soil, has improved the drainage efficiency of paving stone significantly.

The utility model relates to the technical field of ore crushing, in particular to a compression-resistant roller tire which comprises two tire roller mechanisms rotating oppositely. Each set of tire roller mechanism comprises a roller shaft connected with the driving mechanism, a roller sleeve arranged on the roller shaft in a sleeving mode, a connecting sleeve used for connecting the roller shaft and the roller sleeve and a supporting frame used for connecting and installing the tire roller mechanism to the roller press body, and the two ends of the roller shaft are detachably installed on the supporting frame; the roller sleeve comprises a first ring sleeve unit and a second ring sleeve unit which are alternately installed on the connecting sleeve, the second ring sleeve unit is formed by splicing a plurality of detachable fan-shaped blocks, and extension plates are connected to the two ends of each fan-shaped block in an integrally-formed mode. According to the utility model, the installation process can be simplified while the parts can be disassembled, assembled and replaced at will, the connection stability and the pressure resistance are ensured, and the connector is not easy to loosen in the use process.

The invention discloses a well cementation cement slurry system with low permeability, elasticity and toughness, which comprises the following components in parts by weight: 100 parts of oil well cement, 35.6 parts of water, 4-6 parts of a fluid loss agent, 4-6 parts of a reinforcing agent, 2-3 parts of an expanding agent, 0.3-0.5 part of a retarder, 0.5-1 part of a dispersing agent, 0.5-1 part of a defoaming agent, 0.5-1 part of polypropylene fiber, 10-15 parts of latex and 0.5-1 part of a latex stabilizer. The length of the polypropylene fiber is 8-10 mm, and the equivalent diameter of the polypropylene fiber is 32-36 [mu] m; the latex is styrene butadiene rubber latex, the latex is an emulsified polymer, spherical polymer particles in the latex exist in an emulsion suspension form, and the particle size is 0.05-0.5 mu m; the latex stabilizer is a surfactant stabilizer; the invention further discloses a preparation method. The improvement on the fluidity, the toughness, the anti-permeability and other properties of the cement paste is realized.

The application relates to a light-weight concrete insulation board and a preparation method thereof, and belongs to the technical field of building insulation boards. The light-weight concrete insulation board is mainly prepared from the following components: cementing material 350-400 parts by weight, light-weight aggregate 71-81.5 parts by weight, additive 10-17.5 parts by weight, foaming agent 1.5-2.0 parts by weight, reinforcing fiber 0.8-1.2 parts by weight, silica sol 2-3 parts by weight and water 160-200 parts by weight. The light-weight concrete insulation board provided by the application can significantly improve the insulation performance on the basis of guaranteeing mechanical properties such as compressive strength, and can guarantee the anti-freezing performance of the insulation board under low-temperature conditions.

This invention discloses a plastic concrete suitable for seepage-proof walls on soft soil foundations and its preparation method. By weight, it comprises: 210-250 parts of strength component, 80-90 parts of deformation component, 0.1-0.2 parts of thickening component, 1900-1950 parts of skeleton component, and 211-251.2 parts of liquid component. The strength component includes cement, fly ash microspheres, and metakaolin; the deformation component includes bentonite, sepiolite powder, and attapulgite; the thickening component includes cellulose and amylase; the skeleton component includes sand and stone; and the liquid component includes mixing water and a water-reducing agent. This invention, through the mixing of each strength component, forms hollow spheres and a network structure filling the voids in the cement particles. Combined with the multiple network structure formed by the deformation component, it can prepare plastic concrete particles that are firmly embedded and stable while possessing good deformation capacity. This reduces the elastic modulus while ensuring the compressive strength of the concrete, thereby lowering the elasticity / strength ratio.

The present invention provides a high-toughness impact-resistant and wear-resistant mortar and a preparation method and application thereof, belonging to the technical field of building repair materials. The high-toughness impact-resistant and wear-resistant mortar comprises the following raw materials by weight: 20 to 30 parts of slag sulphoaluminate cement, 55 to 65 parts of high-strength aggregate, 5 to 12 parts of pre-dispersed basalt chopped fibers, 3 to 6 parts of water-based polyurethane emulsion, 0.05 to 0.1 parts of silane coupling agents, and 0.02 to 0.08 parts of water reducers; wherein the pre-dispersed basalt chopped fibers comprise the following raw materials by weight: 15 to 25 parts of basalt short fibers and 75 to 85 parts of granulated blast furnace slag powder. The present invention also includes a preparation method of the high-toughness impact-resistant and wear-resistant mortar and its application in the preparation of flood discharge building repair materials for hydropower points. The high-toughness impact-resistant and wear-resistant mortar prepared by the present invention has good anti-scouring and wear resistance, flexural resistance and durability, and has promotion and application value.

The utility model discloses a multi-degree-of-freedom adjustable 3D radar scanning robot, and relates to the technical field of 3D radar scanning robots, the multi-degree-of-freedom adjustable 3D radar scanning robot comprises a fixed base, a multi-degree-of-freedom mechanical arm is installed at the upper end of the fixed base, and the end portion of the multi-degree-of-freedom mechanical arm is fixedly connected with an assembly seat. The fixing plate is connected with the 3D radar scanner, or the fixing plate and the clamp are installed, so that the clamp or the 3D radar scanner and the multi-degree-of-freedom mechanical arm are installed in a sliding mode, in this way, installation is rapid, alignment adjustment does not need to be conducted for a long time, installation is convenient, and through arrangement of the pressing plate, the 3D radar scanner and the multi-degree-of-freedom mechanical arm can be conveniently installed. During installation, a rubber pad needs to be installed at the lower end of the pressing plate, the pressure on the upper end of the assembly plate is increased, and the assembly plate is extruded and fixed, so that the stability of the assembly plate after installation can be improved, and the stability of the 3D radar scanner during use is ensured.

The invention is suitable for the technical field of 3D ecological soil material printing, and provides a 3D printing ecological material based on immature soil and a preparation method of the 3D printing ecological material. Comprising 45%-60% of raw soil, 5%-10% of calcined gypsum, 10%-20% of aggregate, 10%-18% of sulphoaluminate cement, 5%-12% of silica fume powder, 0.2%-0.8% of Wacker dispersed rubber powder, 0.5%-1.0% of a water reducing agent, 0.8%-1.5% of a retarder, 0.5%-1.5% of a water repellent, 0.2%-0.8% of a defoaming agent, 0.5%-1% of steel fibers and 0.2%-0.5% of anti-cracking fibers. By adding the different functional components, the physical properties such as compressive strength, compactness, resilience modulus, water resistance, freezing resistance and shear strength of a wall are guaranteed, and the problems existing in current market materials are solved.

The application relates to the technical field of polymer materials and building material additives, in particular to a heavy metal complex type tailing filling water reducing agent based on biological enzyme catalysis and a preparation method thereof; the preparation method comprises the steps of monomer premixing, enzymatic oxidation coupling polymerization, termination and activation; the method constructs a homogeneous aqueous phase environment by adjusting the pH of a multi-monomer system through a buffer, continuously introduces oxygen-containing gas to maintain the oxidation reaction cycle, the core is to generate a polymer skeleton containing an aromatic ring C-C bond or a C-O-C aromatic ether bond by using biological enzyme catalysis, and a heavy metal stable chemical complex structure is constructed by introducing a nitrogen heteroaromatic compound; the application solves the technical problems that a traditional water reducing agent is easy to be out of control in a heavy metal environment and has no chemical anchoring capacity, uses enzymatic polymerization, space steric hindrance and chemical complexing to solve the synthesis obstacles of complex industrial wastewater and the heavy metal leaching risk, effectively inhibits secondary pollution and improves the compressive strength of the filling body.

The utility model relates to the technical field of fire fighting appliances, in particular to a fire hose which comprises a hose body and a connector, the hose body comprises a waterproof rubber layer on the innermost layer, an inner flexible steel wire mesh layer fixedly arranged on the outer side of the waterproof rubber layer in a sleeving mode and an inner wear-resistant layer fixed on the outer side of the inner flexible steel wire mesh layer, the inner wear-resistant layer is arranged on the outer side of the belt body, the outer flexible steel wire mesh layer is fixedly arranged on the outer side of the inner wear-resistant layer in a sleeving mode, the outer wear-resistant layer is fixed to the outer side of the outer flexible steel wire mesh layer, a plurality of first wear-resistant protruding strips are arranged on the outer side of the outer wear-resistant layer in the length direction of the belt body, and second wear-resistant protruding strips are arranged between the adjacent first wear-resistant protruding strips; the abrasion resistance of the fire hose can be effectively enhanced, the problem that the fire hose is broken and leaks water due to abrasion is solved, and the service life of the fire hose is prolonged.

The application discloses an anti-static low-extraction polyethylene blow-molding product, which comprises, from outside to inside, an outer layer, an intermediate layer and an inner layer; the outer layer comprises high-density polyethylene and an anti-static agent; the intermediate layer comprises high-density polyethylene; the inner layer is fusible polytetrafluoroethylene; a transition layer is further arranged between the intermediate layer and the inner layer; the transition layer comprises high-density polyethylene and a fluorine-containing alkylated poly(ethylene-g-maleic anhydride) polymer; and the fluorine-containing alkylated poly(ethylene-g-maleic anhydride) polymer is obtained by reacting a fluorine-containing alcohol and poly(ethylene-g-maleic anhydride) under the catalysis of toluenesulfonic acid. The product has the advantages of corrosion resistance and clean protection, high compatibility and structural strength, and double-sided anti-static performance.

The utility model is applicable to the technical field of gas-driven urea tanks, in particular to a gas-driven urea tank for a lightweight automobile, which comprises a urea tank upper-section tank body and a urea tank lower-section tank body, the surface of the urea tank upper-section tank body is provided with a preset filling port, the surface of the urea tank lower-section tank body is provided with a drain outlet, and the drain outlet is communicated with the urea tank upper-section tank body and the urea tank lower-section tank body. A drain outlet sealing plug is arranged in the drain outlet, and the end face of the urea tank upper-section tank body and the end face of the urea tank lower-section tank body are fixedly connected together in a welded mode. According to the stainless steel gas-driven urea tank system, the stainless steel urea tank in the stainless steel gas-driven urea tank system is formed by welding the urea tank upper-section tank body and the urea tank lower-section tank body which are made of thermoplastic plastics; the outer winding layers made of the glass fiber filaments, the carbon fiber filaments or the basalt fiber filaments are evenly wound on the outer side of the urea tank upper section tank body and the outer side of the urea tank lower section tank body, and due to the design, cost and weight are reduced, corrosion resistance is enhanced, and the compression strength of the urea tank is not inferior to that of a stainless steel urea tank.

The invention relates to a light straw brick as well as a preparation method and application thereof. The method comprises the following steps: 1) straw pretreatment; completely soaking the pretreated straws in a flame retardant solution, fishing out the straws after the straws are completely wetted, and drying the straws until no flame retardant solution drips from the straws within 5 minutes, so as to obtain wet straws; 2) mixing gypsum, sodium citrate and water to obtain an adhesive; the mass ratio of the gypsum to the sodium citrate to the water is 1: (0.001 to 0.005): (0.61 to 0.76); and 3) mixing the adhesive and the wet straws, pressing into bricks, and drying to obtain the light straw bricks. The gypsum can react and harden with water, so that the straw brick has excellent compressive strength, the hydration reaction of the gypsum and the water is faster than the hydration reaction of cement and the water, the production time can be shortened, and compared with the traditional cement straw brick, the produced light straw brick has lighter mass.