50results about How to "Improves strength and stability" patented technology

The invention discloses a hoisting system and a hoisting construction method for large steel corridor trusses. The hoisting system comprises lifting points, hanging points and jack lifting equipment. The jack lifting equipment is mounted between the lifting points and the hanging points, the lifting points comprise first lifting frames and second lifting frames, the first lifting frames are connected with first main structures, the second lifting frames are connected with second main structures, four embedded steel beams which have equal heights and are parallelly arranged are arranged in the two lifting frames of each lifting point, the lifting points are arranged at the ends of the embedded steel beams, two box-shaped brackets are respectively welded on two sides of each beam body of each lifting point, a jack is mounted on each box-shaped bracket, and each torsion-resistant steel beam is welded between the two corresponding box-shaped brackets on the inner sides of the beam bodies of the corresponding lifting points; the four corresponding hanging points which vertically correspond to the lifting points on a frame are arranged on each steel corridor truss, and steel strands penetrate the box-shaped brackets from top to bottom and are fixed by the aid of anchors after descending and penetrating the hanging points. Each large steel corridor truss can be synchronously lifted by the aid of the four corresponding hanging points during construction. The hoisting system and the hoisting construction method have the advantages that the hoisting system is reasonable in design and easy to operate, and problems of large occupied land areas, heavy dead weights and poor balance in existing large steel corridor truss hoisting procedures can be effectively solved by the aid of the hoisting system and the hoisting construction method.

The invention relates to an in-situ heat regeneration remixing and paving technology of an asphalt pavement, which is characterized by particularly comprising the following steps of 1, construction preparation: 1) mechanical equipment and instrument debugging and maintenance preparation, 2) raw material preparation and technical index detection, and 3) pavement sweeping and guide line scribing, 2, paved antiskid layer asphalt mixture mixing, 3, paved antiskid layer asphalt mixture transport, 4, pavement heating, 5, pavement scarifying, 6, regenerant spraying and stirring, 7, spreading, 8, rolling, 9, traffic access, and 10, technical index check. The curing construction technology of the asphalt pavement can allow waste to be recycled; the original pavement is not required to be milled; the whole endurance and the service life of the pavement are improved and prolonged; the construction speed is high; the traffic access speed is high; the safety and the efficiency of the transport are improved; the cost is saved; occupational health is facilitated; and the technology is environment-friendly and energy-saving.

The invention relates to a prefabricated green building system and a construction method thereof, and belongs to the technical field of building construction industrialization. The prefabricated greenbuilding system includes a bottom plate, the bottom plate includes a plurality of first splicing strips spliced to each other, a first slot and a first inserting strip which are matched with each other are arranged on the opposite faces of every two adjacent first splicing strips, the cross section of each first slot is in a T shape, and each first inserting strip is arranged to be matched with the corresponding T-shaped first slot. The two ends of each of the multiple first splicing strips are provided with first covering strips for covering the two ends of each of the multiple first splicing strips, the cross section of each first covering strip is in a U shape, as the first slots and the first inserting strips are in the T shapes, the multiple first splicing strips are located on the same plane, and the fixing effect of the adjacent first splicing strips is improved. The ends of the multiple first splicing strips are covered with the first covering strips, deviations between the heights of the multiple first splicing strips along stand columns are prevented, and the strength and stability of the prefabricated building system are improved.

The invention provides a high efficiency and energy saving fly ash sintered brick making method. The optimization of granularity graduation of shale powder and the introduction of a single layer drying process capable of realizing large-scale continuous production solve the problems of low strength and easy deformation of green bricks in the drying process of ultrahigh-content fly ash sintered bricks, and multi-time mixing, forced mixing, heat insulation time prolongation processes further improve the product stability, so the large-scale industrial production of ultrahigh-content fly ash sintered bricks is successfully realized, the sintered bricks obtained in the invention has high yield, excellent strength and reduced weight, and energy consumed by sintering is effectively reduced. The selection of a kiln top and a hanging structure made of a sintered refractory material improves the acid corrosion resistance of a kiln body, can effectively adapt to the production of high--sulfur high-carbon fly ash sintered bricks, solves the problem of difficult utilization of fly ash from a circulating fluidized bed power plant, and improves the resource utilization rate.

The invention discloses a multi-head branch-control 3D printer. Longitudinal guide rails are two guide rails symmetrically distributed along the middle positions of transverse guide rails. Each longitudinal guide rail is symmetrically provided with two printing head mounting sliding blocks, wherein a 3D printing head is mounted on each printing head mounting sliding block. The four 3D printing heads on the two longitudinal guide rails complete printing in four areas of a printing platform. Every time printing of one layer is completed, the printing platform is driven by a power mechanism to rotate by 3.6 degrees, and therefore the printing areas corresponding to the four printing heads are stacked at the joint of the two adjacent printing areas of the lower layer. The four printing heads of the multi-head branch-control 3D printer work at the same time and do not generate interference to one another, and the printing efficiency is greatly improved; and the printing platform is arranged to be rotatable, and therefore after printing work of one layer is completed every time, the printing platform rotates by a certain angle, the printing area of each printing head is changed, staggered stacking between the different printing layers is formed, and the strength and stability of printed products are improved.

Provided modified aluminate cement is prepared from the following raw materials: aluminate cement, titanium-silicon micro-nano capsules, magnesium oxide, a phosphate, fly ash, modified acrylic emulsion and an activating agent, wherein the titanium-silicon micro-nano capsule is prepared from orthosilicate and titanate under the conditions of a surfactant and alkalinity. The aluminate cement prepared by the invention is wide in raw material source and simple in preparation method, has good high-temperature resistance, wear resistance, sulfate corrosion resistance, adhesion, crack resistance, freezing resistance, seepage resistance, corrosion resistance and aging resistance, also has good effects of adsorbing and degrading formaldehyde and organic pollutants due to the TiO2 structure, plays agood role in environmental protection, ensures the safety as a structural part, and has a wide application prospect.

The invention discloses a full-aluminum alloy material van carriage and a manufacturing process thereof. The all-aluminum alloy material van carriage comprises a bottom plate assembly, a top plate assembly, a left side plate assembly, a right side plate assembly, a rear door assembly and a front side plate assembly; each sub-assembly is processed separately to form a modular unit, and finally assembly molding of the carriage is completed on the assembly line; the whole frame of the carriage adopts a 6063T6 material aluminum alloy extruded profile, the profile is machined through milling and stamping by a special die to achieve the required state of assembling; assembling of the carriage frame adopts the assembly process of BOOM structure rivet riveting, argon arc welding and bolt connection combination to obtain a frame structure with high strength and good stability; a panel structure of the carriage adopts a 5052 material high-strength aluminum alloy single-layer plate, and the plateis manufactured through a sheet metal machining process such as blanking, punching, bending, argon welding, grinding and the like; and high-gloss powder spraying treatment is adopted on the outer surface of the whole carriage. According to the van carriage and the manufacturing process, the purpose of lightweight of the vehicle body is achieved by adopting the all-aluminum alloy material.

The invention relates to an auxiliary frame of a loader. An auxiliary frame of a wheel loader comprises four bottom plates welded together through beams and linkage plates, the bottom plates are provided with holes used for fixing rear axles, the beams are provided with hinge joint pin holes used for installation of hinge joint hinge pins, and the bottoms of the linkage plates are provided with check blocks. The auxiliary frame is characterized in that notches are formed in the middles of the linkage plates. Accordingly, because reinforcing plates and stressed areas of the beams are increased, strength and stability of the auxiliary frame are integrally improved; the requirement of the auxiliary frame for strength is met, and stress distribution is improved.

The invention relates to a cementing material prepared from oil-bearing sludge, a preparation method and application of the cementing material and cement prepared from the cementing material, and belongs to the technical field of sludge treatment. The cementing material is obtained by mixing raw materials with water and then calcining the mixture, the raw materials comprise 60 wt%-90 wt% of a first raw material and 10 wt%-40 wt% of a second raw material, the first raw material is obtained by drying and smashing the oil-bearing sludge, the second raw material is obtained by drying and smashing steel slag, and the oil-bearing sludge is effectively treated and utilized through the industrial waste residues. The preparation method of the cementing material comprises the steps that the raw materials are prepared and taken to be stirred into material pellets by adding water, and the material pellets are calcined and then cooled. The preparation method is simple in process, low in energy consumption and complete in raw material treatment. The cement prepared from the oil-bearing sludge is prepared from 4 wt%-6 wt% of dehydrate gypsum, 65 wt%-90 wt% of cement clinker and 5 wt%-30 wt% of the cementing material and has the high compressive strength. By means of application of the cementing material in cement preparation, the potential value of the oil-bearing sludge can be fully utilized.

The invention relates to a method for a reinforcing rock pillar in a shallow buried tunnel with small spacing in a city, and belongs to the technical field of tunnel construction. The methods comprisethe step that by the arrangement of one or more rows of grouting holes, seamless steel pipes are used as grouting pipes according to the construction sequence of jumping holes at intervals, through the hole grouting to reinforce septum rock pillars, the grouting pipes is used as a supporting skeleton to effectively improve the stability of the septum rock pillars; by the binding of the multi-stage pressure separating expansion mold bag on the grouting pipes, slurry is controlled to spread in the target area, and at the same time, the effects that the uplift and settlement of ground can be controlled and the impact on the ground and the surrounding area of the ground can be reduced are achieved; grouting material based on the rapid solidification type slurry can adjust the slurry gel timeaccording to the real time feedback of the grouting process in the field, the over diffusion of the slurry is prevented, the cost is saved, and the segmented and localized reinforcement of the septumrock pillars can be achieved by the matching with the pressure separating expansion mold bag.

The invention relates to the technical field of polypropylene, and concretely relates to a flame-retarding and smoke-suppressing polypropylene composite material and a preparation method thereof. Thepolypropylene composite material comprises polypropylene, a halogen-free flame retardant, a synergistic flame-retardant microsphere, an antioxidant and a lubricant, the synergistic flame-retardant microsphere is a core-shell microsphere, the core is porous zinc stannate, and the shell is microcrystalline cellulose. HL3 grade standards for heat release, smoke density and toxicity in EN45545-2 R6 are as follows: the heat release amount is not more than 60 Kw/m<2>, the Ds (4) value is not more than 150, the VOF (4) value is not more than 300, and the CITG value is not more than 0.75. The polypropylene composite material can meet the above standards , and can greatly increase the safety when applied to railways, and the participation of cellulose makes the tensile strength of polypropylene blend resin improved. In addition, the polypropylene composite material can also be blended and modified with other plastics to improve the application versatility.

The invention provides a method for eliminating efflorescence of a magnesium oxychloride wall through magnesium sulfate. The wall without efflorescence is prepared from raw materials in parts by weight as follows: 50-70 parts of a magnesium sulfate aqueous solution, 30-40 parts of magnesium oxide, 3-4 parts of a modifying agent, 0.2-0.3 parts of fly ash, 0.8-1.4 parts of surface-modified whiskers, 0.6-0.8 parts of polypropylene fibers, 0.3-0.4 parts of quartz sand, 0.6-1.2 parts of saw dust, 1-2 parts of straw and 2-4 pats of perlite. According to the wall preparation process, magnesium oxide and magnesium sulfate are taken as main raw materials, the main defect that a wall prepared from magnesium and magnesium chloride is prone to moisture absorption and efflorescence is overcome, and the prepared wall has the excellent performance of high strength, heat resistance, water resistance, thermal insulation, acid-base resistance, good surface smoothness and no efflorescence.

The invention discloses a filling material self-building retaining wall and a construction method, and belongs to the field of mining. In order to solve the problems that an existing filling retaining wall is high in cost and low in construction efficiency, the invention provides a filling material self-building retaining wall. The filling material self-building retaining wall comprises a plurality of filling retaining wall bodies which are arranged in a roadway from bottom to top, the filling retaining wall bodies are arranged in the roadway in a step shape, each filling retaining wall body comprises two baffles which are oppositely arranged, the edges of the two baffles are attached to surrounding rock in the roadway, the two baffles and the surrounding rock form a trapezoidal filling space, and the filling space is filled with a filling material. The filling material self-building retaining wall is built by the plurality of trapezoidal filling retaining wall bodies, the anti-sliding and anti-overturning capacities of the filling retaining wall bodies are effectively improved through the trapezoidal structures with the narrow upper portions and the wide lower portions, and then the strength and stability of the whole self-building retaining wall are improved; meanwhile, the construction method is easy to operate, the construction time is greatly shortened, and the efficiency is improved; and the filling material is adopted as the main material of the retaining wall, so that the cost is greatly reduced.

The invention relates to the field of buildings, and in particular relates to an external wall insulation material for civil engineering. A mesh-less system is formed by connecting a polystyrene foam insulation board and a special pouring material layer together through a nylon anchor bolt, wherein the special pouring material layer is composed of 60-70% of low-calcium high-aluminum low cement and 25-35% of aluminum silicate clinker. The fire resistance and thermal insulation are greatly improved, and due to the high-aluminum low cement pouring material, the strength and stability of the thermal insulation external wall material are improved.

The invention discloses a selective water plugging method for a high-water-content oil well of a bottom water reservoir. The selective water plugging method comprises the following steps of injecting a nitrogen pressure cone into a shaft, injecting a mixed solution of a foaming agent, a polymer solution, a foam stabilizer and a cross-linking agent, and forming gel foam in a stratum. then removing foam in a high-permeability layer through flowback, so that the purposes of temporary plugging of low permeability and enabling a subsequent water plugging agent to directionally enter the high-permeability layer are achieved; then injecting the water plugging agent, and enabling the water plugging agent to build an artificial partition plate at the proper position in a water producing layer, so that bottom water is prevented from moving upwards, and bottom water coning is restrained; and finally, enabling the water plugging agent to be displaced out of a certain position of a near wellbore zone through over-displacement of a polymer solution, so that a certain liquid production capacity after plugging is ensured, the injection pressure of the water injection well is prevented from being too high, and the validity period of the water plugging agent is prolonged. Under the combined action of the steps, directional water plugging is achieved, and the problems that water breakthrough of the oil well is too early, and the yield is sharply reduced after water breakthrough are solved.

The present invention discloses a cardiac volume reduction system and a guidance system; the volume reduction system comprises a multi-rod frame that is composed of a plurality of support ribs; the top of each support rib is provided with a barb, the tops of the support ribs are peripherally turned out to form a basin shape, the surface of each support rib is covered with polymer separator film, a support base is fixed to the bottom of the multi-rod frame, the guidance system includes a metal rod and a protective sleeve that are integrated, the protective sleeve sleeves the metal rod, the metal rod can slide back and forth in the protective sleeve, the top of the metal rod is connected with a support base, the support base is made from thermoplastic polyurethane elastomer, the metal rod can drive the support base and the multi-rod frame to slide into the protective sleeve. By receiving a volume reduction apparatus in the guidance system and piercing through the surface of the left ventricle with the guidance system, the cardiac volume reduction system is delivered into a human heart and implanted in the heart; through separation of the volume reduction apparatus, ventricular volume is reduced, ventricular tension is reduced, and ventricular reconstitution and a patient's cardiac functionality are improved.

The invention relates to a recycling device, in particular to a quick recycling device for iron parts of waste electronic products, which aims at solving the technical problem of providing a quick recycling device for iron parts of waste electronic products with high recycling speed. To solve the technical problem, the quick recycling device for the iron parts of the waste electronic products comprises a bracket, a support base, a first bearing pedestal, a support rod, a right rotary plate, an electromagnet, a first gear, a first rotary shaft, a first slide rail, a first slide block, a first gear rack and the like, wherein a fixing plate is arranged at the top part of the support base; the right rotary plate is hinged to the right side of the fixing plate; a left rotary plate is hinged to the left side of the fixing plate; a second bearing pedestal is arranged at the right side of the top part of the interior of the bracket. The quick recycling device has the advantages that the recycling speed is high, the structure is simple, and the operation is simple.

The invention relates to recycled concrete and a preparation method thereof, wherein the recycled concrete comprises, by weight, 60-70 parts of recycled coarse aggregate, 18-22 parts of natural coarseaggregate, 15-20 parts of slag Portland cement, 15-20 parts of fine sand, 10-15 parts of activated water, 8-12 parts of fly ash, 5-8 parts of modified polypropylene fiber, 4-6 parts of a binder, 3-5parts of silica powder, 3-5 parts of manganese dioxide powder, and 3-5 parts of a water reducing agent. The preparation method comprises: S1, breaking waste concrete to form recycled coarse aggregate;S2, screening the recycled coarse aggregate with a particle size of 10-15 mm so as to be spare; S3, cleaning the surface of the recycled coarse aggregate to remove the residual cement mortar on the surface; S4, mixing, wherein the raw materials are sequentially mixed, and uniform stirring is performed to obtain a recycled concrete slurry; and S5, pouring with the recycled concrete slurry, vibrating, and molding. According to the present invention, the recycled concrete has the improved strength.

The invention provides a novel steel bar planting structure and a construction method thereof, relates to the technical field of steel bar connecting machine manufacturing, and aims to solve the problems that when steel bar planting needs to be carried out a secondary structure on a civil engineering site, holes are drilled in a surface layer of an original concrete surface, then steel bars are planted, the work amount is large, and the work efficiency is low. The structure comprises a shell, a metal fixing piece, a metal chamfer, a metal binder, a main steel bar and a steel bar to be planted,wherein the shell is of a hollow design, the shell is designed to be T-shaped and is divided into a transverse part and a vertical part, the metal fixing piece is located at the upper portion of thetransverse part of the shell, the metal chamfer is arranged on the inner wall of the vertical part of the shell, the main steel bar is arranged on the transverse part of the shell in a penetrating mode, the steel bar to be planted is arranged on the vertical part of the shell in a penetrating mode, and a gap between the steel bar to be planted and the metal chamfer is filled with the metal binder.The structure reinforces connection between the planted steel bar and a main bar of an original structure, so that the strength and the stability are improved.

The invention discloses a production process of a wood and stone composite floor. The production process comprises the following steps that A, materials of a solid wood flooring body are prepared, anarc-shaped groove is molded in the surface of the solid wood flooring body, and an arc-shaped batten is dug out for standby application; B, materials of a stone flooring body are prepared, an arc-shaped groove is molded in the surface of the stone flooring body, and an arc-shaped stone stripe is dug out for standby application; C, the arc-shaped batten is embedded into the arc-shaped groove in thesurface of the stone flooring body, and an adhesive layer is arranged at the combining position of the arc-shaped batten and the arc-shaped groove; D, polishing is carried out to obtain the finishedwood and stone composite floor; E, the arc-shaped stone stripe is embedded into the arc-shaped groove in the surface of the solid wood flooring body, and an adhesive layer is arranged at the combiningposition of the arc-shaped stone stripe and the arc-shaped groove; F, polishing is carried out to obtain the finished wood and stone composite floor; and G, the surface of the floor is coated with awaterproof anti-corrosion aldehyde removing gel.

The invention discloses a topological optimization structure ceramic matrix and nickel-based high-temperature alloy integrated component and a preparation method thereof. A calcium oxide ceramic basedcasting mould with hydrating resistance is prepared; a ceramic matrix is placed in the bottom space of the calcium oxide based ceramic casting mould, and the periphery of the ceramic matrix and the casting mould are sealed through zirconium dioxide cellucotton; a calcium oxide funnel is arranged at an opening of the calcium oxide based casting mould, an outlet of the funnel is blocked by a pure nickel plug, and a solid-state nickel-based high-temperature alloy is placed in the funnel; and the calcium oxide based casting mould is heated under the vacuum environment, a nickel-based high-temperature alloy phase is firstly made to become a liquid state, then the pure nickel plug is smelted, the liquid-state nickel-based high-temperature alloy falls down onto the ceramic matrix, a ceramic matrix topological structure is filled with the liquid-state nickel-based high-temperature alloy, the liquid-state nickel-based high-temperature alloy is solidified, and the composite component is obtained. By means of the component and the preparation method, the problems that under the action of gravity, metal liquid drops cannot achieve complete mold filling, and the surface quality is influenced by the complex structure and solidification can be solved.

The invention discloses an inlet type cementing filling blocking wall and a construction method thereof. The blocking wall structure comprises a wall body, and further comprises a reinforcing assemblyand a capping part, wherein the reinforcing assembly is arranged in the blocking wall body, and comprises reinforcing ribs arranged in a staggered manner and a reinforcing plate attached to the reinforcing ribs; and the capping part is arranged at the top of the blocking wall body. According to the blocking wall, a formwork construction method of combining the reinforcing ribs with the reinforcing plate is adopted. The problem that the structure and the parameter setting of a mine filling blocking wall adopting a filling mining method are unreasonable is solved, and through practice verification, under the condition that the filling is more economical and reasonable compared with the prior art, the filling blocking wall can bear the acting force from the filling material on strength, andcan also meet the requirements of resisting the blasting vibration of the mining area and filtering water of the filling material slurry in structure.

The invention provides an installation structure of an assembled door pocket. The installation structure comprises an indoor door frame, an outdoor door frame, a door frame baffle, a veneer and a cover plate. The indoor door frame comprises a first frame body, a first buckle and a second buckle, wherein the first buckle and the second buckle are arranged on the first frame body and located on thetwo sides of the first frame body correspondingly, and the inner side of the first buckle is connected with a wall corner of an indoor wall body; the outdoor door frame comprises a second frame body and a closing edge frame arranged at the bottom of the second frame body, the second frame body is arranged on a door opening wall body, and the closing edge frame is attached to an outdoor wall body;the door frame baffle is connected with the outer side of the second frame body; the top and the bottom of the veneer are in clamped connection with the second buckle and the door frame baffle correspondingly; and the cover plate is arranged on the outer side of the first buckle and is in clamped connection with the first buckle. Compared with the prior art, the installation structure has the advantages of being good in universality, capable of adapting to walls and door leaves with different thicknesses for use, convenient to install, fully connected with the wall bodies, good in connection strength and strong in stability.

The invention discloses an experimental device of a surrounding type local resonance light dot matrix sandwich plate structure, relates to a deoxidizing structure and aims to solve the problem of thefailure of a traditional lattice sandwich structure to control the propagation of low-frequency elastic waves and the problem of low rigidity and large mass of a local resonance type acoustic meta-material. The experimental device comprises an upper plate body and a lower plate body; the upper plate body and the lower plate body are sequentially and horizontally arranged from top to bottom; and the experimental device further comprises a plurality of supporting units which are arranged between the lower surface of the upper plate body and the upper surface of the lower plate body in a matrix mode. The invention belongs to the technical field of mechanical experiment devices. A lattice sandwich and a local resonance type acoustic meta-material (a vibration absorber assembly) are combined, so that the structure has higher strength and stability, and meanwhile, can achieve a low-frequency vibration suppression effect.

The invention discloses a strip piece, a manufacturing method of the strip piece, a beam, a manufacturing method of the beam, a blade and a wind generation unit. The strip piece is of a prismatic structure and comprises a first side surface and a second side surface which are oppositely arranged and limit the thickness of the strip piece with each other, and a first groove which is formed in the first side surface in the thickness direction in a concave mode and extends in the length direction of the first side surface, and the width of the groove bottom surface of the first groove is greaterthan or equal to the width of the second side surface. According to the strip piece, when the strip piece is stacked, an embedded structure can be formed, the overall stability and strength of the stacking structure are increased, and the load bearing capacity of the overall structure is improved.

The invention provides a support which comprises a base, a first support arranged on the base, a second support arranged on the first support and a bracket arranged on the second support. The first support is vertically arranged on the base, the second support is transversely arranged on the first support and can rotate vertically surrounding the first support, the second support comprises a second rod portion arranged on the first support and a reinforced part fixed on the second rod portion, and the length of the reinforced part is basically identical to that of the second rod portion. The strength and stability of the second support are improved through the reinforced part fixedly supported on the second support, service life of the support is prolonged, and the reinforced part is simple in structure and convenient to manufacture.

The invention discloses a multi-stage vibration type shape sorting device for spherical nuclear fuel particles. The multi-stage vibration type shape sorting device comprises a feeding mechanism, a vibration transmission mechanism, an inclination angle adjustor, a material receiving box and an interstage particle conveying pipe. The feeding mechanism comprises a first-stage feeding mechanism and a second-stage feeding mechanism; the vibration transmission mechanism comprises a first-stage vibration table and a second-stage vibration table; the inclination angle adjustor comprises a first-stage inclination angle adjustor and a second-stage inclination angle adjustor, and the material receiving box comprises a first-stage qualified material receiving box, a first-stage waste material receiving box and an interstage particle conveying receiving box which are arranged on the discharging side of the first-stage vibration table and communicated with the vibration table surface of the first-stage vibration table; the material receiving box further comprises a second-stage qualified material receiving box and a second-stage waste material receiving box which are arranged on the discharging side of the second-stage vibration table and communicated with the vibration table surface of the second-stage vibration table. One end of the interstage particle conveying pipe communicates with the interstage particle conveying receiving box, and the other end of the interstage particle conveying pipe communicates with the second-stage feeding mechanism. Therefore, the technical problems of low particle screening precision and poor equipment vibration uniformity are solved.

The invention discloses a partition wall-wall connection structure comprising a partition wall keel. Steel wire meshes are arranged on the two sides of the partition wall keel correspondingly. High-performance sprayed wall materials are sprayed on the outer sides of the steel wire meshes. The partition wall keel is composed of two transverse keels and multiple vertical keels, wherein the transverse keels are vertically and symmetrically arranged on a wall, and the vertical keels are perpendicularly installed between the two transverse keels. A protection partition plate is installed at the connection position of the transverse keel located on the top and the wall. An installation groove is machined and formed in the middle portion of the protection partition plate. The transverse keel located on the top is horizontally arranged in the installation groove, and a sealing adhesive strip is arranged at the connection position. The two sides of the sealing adhesive strip are filled with a sealant. Punched holes are formed in the connection positions of the transverse keels and the end portions of the vertical keels correspondingly. Expansion bolts are arranged in the punched holes. Theinner ends of the expansion bolts penetrate through the inner portion of the protection partition plate and are fixed in the wall. By means of the partition wall and wall connection structure, the connection structure of the partition wall keel and the wall is improved, the protection partition plate is designed at the connection position of the partition wall keel and the wall, and the installation stability of the partition wall keel can be effectively improved.

The invention discloses a high-abrasion-resistance-strength spring supporting and hanging frame. The high-abrasion-resistance-strength spring supporting and hanging frame comprises a base, a cylinderand support columns. The support columns penetrate the cylinder, and the base is arranged at the bottom of the cylinder. The high-abrasion-resistance-strength spring supporting and hanging frame is characterized in that T-shaped grooves are formed in the two sides of the base correspondingly, the bottom ends of the support columns are provided with T-shaped connecting blocks matched with the T-shaped grooves in structure, and the T-shaped connecting blocks are arranged in the T-shaped grooves of the base and are fixed to the base through cooperation of screws and nuts; each support column is provided with an upper limiting block and a lower limiting block, wherein the outer side of the part, on the upper limiting block and the lower limiting block, of the support column is sleeved with a spring, the upper end of the spring abuts against the upper limiting block, and the lower end of the spring abuts against the lower limiting block; and a connecting fixing plate is arranged at the upper end of the cylinder and fixedly connected with the top ends of the support columns, and connecting fixing columns are arranged on the two sides of the connecting fixing plate. The high-abrasion-resistance-strength spring supporting and hanging frame is high in strength, hardness and tenacity, resistant to acid and alkali corrosion, high in stability and long in service life.

Preparing method includes following steps: mixing and stirring solution of silica sol and solution or powder of organic polymer having two or more hydroxy groups so as to obtain even solution; in solution of silica sol, weight of silicon dioxide : weight of organic polymer = 8 : (2-32); adding acid into the said solution and stirring it evenly, quantity of acid added : (weight of silicon dioxide + weight of organic polymer in solution); casting the said solution, drying at room temperature or drying by baking polymerizes silica sol; peeling off membrane to obtain composite proton exchange membrane. Features are favorable chemical stability and moisture absorption, high conductivity, no need of humidification.