43results about How to "Easy to seep" patented technology

The invention discloses a shield construction method for a two-line overpass with small radius, shallow covering soil and large longitudinal slope complex linear tunnel, which belongs to the technical field of tunnel construction. The construction method of the present invention includes the following steps: determining the advancing sequence of the two-line interchange, selecting a shield machine type, taking auxiliary strengthening measures for the ground surface, strata, and segments, shield advancing, axis control and construction monitoring, and shield tunneling. In the present invention, since the shield increases the hinged part, the sensitivity of the shield is increased, and the control of the axis of the tunnel is more convenient; a suitable reinforcement and pressure scheme, a segment typesetting method and a stiffening rib scheme are selected to make the outer arc of the segment broken. Cracks and segmental water seepage can be improved; and through high-frequency monitoring and information feedback, the shield propulsion parameters are strictly controlled. By taking the above measures, the deformation and displacement of the ground surface and the tunnel are effectively controlled, which effectively reduces the cost of tunnel construction and The complex influence of the post-construction tunnel ensures the smooth progress of the construction and the effective control of the tunnel deformation.

The invention discloses a high-yield cultivation method for pollution-free bletilla striata. According to the method, a beneficial symbiotic bacterium nutrient solution obtained after orchidaceae rhizobium or orchidaceae mycorrhizal fungi are subjected to artificial cultivation and separation and humus soil are subjected to propagation fermentation, then nutrient soil is prepared, and after the nutrient soil and soil in planting trenches are mixed, field transplantation of tissue culture seedlings is performed; then intertillage weeding, topdressing and reasonable insect prevention are performed in the growing period, and harvesting can be performed after two years of growth. The method has the advantages that due to combination of symbiotic bacteria and an ecological planting technology, generation of bletilla striata new roots and large tubers are promoted, and meanwhile EM pest preventing liquid is used so that disease and pest damage can be totally avoided; compared with a traditional planting method, the harvested bletilla striata is large in size and small in individual difference, superior products can be over 95%, the yield per mu is increased by 40-50%, and the method has good economic benefits, social benefits and ecological benefits.

The invention discloses a production method of a porous sintered functional ceramic tile, which comprises the steps that: proportioning according to material ratio of the existing ceramic tile, ball milling, spray drying, pressing forming or squeezing forming, drying-high temperature sintering, and edging treatment. The invention is characterized in that the raw material uses no or less potassium and sodium, but uses material with large burning loss and being easy decomposition and the material takes 10 to 50 percent of the total raw material in the formula; the material, after sintering in high-temperature, forms a porous ceramic body with a communicating passage; the chemical composition of the raw material formula after the sintering process is ( according to weight proportion): 30 to 70 portions of SiO2, 10 to 30 proportions of A12O3, 15 to 40 portions of CaO and 0 to 20 portions of MgO; the material with large burning loss and being easy decomposition adopts one or a plurality of the materials such as CaCO3, CaF2, MgCO3, carbon powder, waste residue of polishing brick, etc. The product produced in the method of the invention has a vitreous body, high rigidity and low cost and has the performances of water seepage, water retention, humidity regulation, anti-skid and sound-proof.

The invention provides a horizontal wall reserved hole manufacturing and plugging device and method. The horizontal wall reserved hole plugging device comprises a water stop component and two plugging components, the water stop component is fixed in the middle of a reinforced concrete wall, and the plugging components are positioned on two sides of the water stop component, fixed at openings of a reserved hole of the reinforced concrete wall and used for plugging materials filling the reserved hole. According to the manufacturing and plugging device and method, the water stop component seals the reserved hole through rubber gaskets, water stop effect of a water stop plate is ensured, the plugging components are fixed at the hole openings, fillers can be tamped, and cracks caused by shrink of solidified fillers are avoided, so that water penetration, water leakage and the like generated after plugging of the horizontal reserved hole are effectively improved.

The invention discloses an anti-freezing building waterproof binder. The binder is characterized by being prepared from, by mass, 20-30 parts of vinyl acetate copolymer emulsion, 35-43 parts of polyvinyl alcohol, 8-15 parts of methyl acrylate, 0.5-0.9 part of initiator, 2-4 parts of dispersing agent, 5-7 parts of coalescing agent, 1-3 parts of defoaming agent, 3-6 parts of emulsifier and 50-70 parts of water. The binder is applied to buildings, in particular to walls and cement concrete, and has the advantages of being capable of well repairing seams, and resistant to water leakage and seepage; particularly, the binder can still maintain good features even under a low-temperature environment, has good adhesive force, does not crack, and has excellent waterproof performance, the applicationrange and region of the binder are greatly expanded, and the binder is particularly applicable to the northern areas.

The invention provides an outdoor theatre and a construction method thereof. The outdoor theatre comprises a stage, an audience area, a drainage system and an irrigation system, wherein the audience area is distributed with the stage position serving as a center and comprises 3-12 layers of fan-shaped platforms arranged from inside to outside; the fan-shaped platforms are arranged on a rough place, the rough place comprises 3-12 layers of stepped slopes, and each fan-shaped platform comprises a base layer, a coarse sand layer and a soil planting layer from bottom to top in sequence; the drainage system comprises a main drain arranged in the base layers of the fan-shaped platforms, a plurality of underground percolation blind pipes are distributed in the base layers of the fan-shaped platforms in a fork-shaped vein manner, an overground open drain and a filter. The green theatre is good in soil permeability, high in trample resisting capability and good in buffer performance; lawn strength and crushing resistance are high, and the service life of a plant root layer is long; the irrigation is convenient, rainwater and residual irrigation water are recycled, and the purpose of urban zero emission is achieved.

The invention relates to a pure Chinese herbal medicine liquid fertilizer, and belongs to the technical field of liquid fertilizers. The collected Chinese herbal medicine residue is fermented, filtered and detected to obtain a Chinese herbal medicine residue fermentation liquid, a raw material Chinese herbal medicine fermentation liquid is added into the Chinese herbal medicine residue fermentation liquid according to the detection result and the target range of nutritional elements to obtain the pure Chinese herbal medicine liquid fertilizer; the raw material Chinese herbal medicine fermentation liquid is a fermentation liquid of one or more raw materials of Chinese herbal medicines comprising fructus trichosanthis, rhizoma phragmitis, lalang grass rhizome, folium mori, folium artemisiaeargyi, magnolia flowers, ricepaper pith, purslane, dandelion, lophatherum gracile, radix puerariae, capillary artemisia or cortex lycii radices; the addition amount of the raw material Chinese herbalmedicine fermentation liquid accounts for 0.3-1.5% of the mass of the Chinese herbal medicine residue fermentation liquid. The Chinese herbal medicine residue is fully used to turn waste into wealth,the cost of the raw material is low, the nutritional elements are rich, the fertilizer efficiency is high, the soil is effectively improved, and the pure Chinese herbal medicine liquid fertilizer is favorable for promoting the sustainable development strategies and benefits both the nation and the people.

The invention discloses a tooth-groove type waterproof connecting structure adopting a pressure-grouting method for horizontal joints of assembling type building prefabricated wall boards. The tooth-groove type waterproof connecting structure comprises assembling type prefabricated wall boards and assembling type building bottom boards and assembling type building top boards connected with the assembling type prefabricated wall boards, wherein lower trapezoidal grooves are prefabricated at the positions of the assembling type building bottom boards connected with the assembling type prefabricated wall boards; upper trapezoidal convex teeth are prefabricated at the positions of the assembling building top boards connected with the assembling type prefabricated wall boards; lower trapezoidalconvex teeth corresponding to the lower trapezoidal grooves are prefabricated on the connecting surfaces corresponding to the assembling type prefabricated wall boards and the assembling type building bottom boards; upper trapezoidal grooves corresponding to the upper trapezoidal convex teeth are prefabricated on the connecting surfaces corresponding to the assembling type prefabricated wall boards and the assembling type building top boards; a certain amount of waterproof mortar is preset in the upper trapezoidal grooves and the lower trapezoidal grooves. The tooth-groove type waterproof connecting structure disclosed by the invention has the beneficial effects that the flexible waterproof mortar is reliably used for filling the horizontal joints of the prefabricated wall boards and building boards, the phenomena of water seepage and water accumulation of the assembling type building outer wall surfaces are effectively improved, and the traditional process of the connecting structures of the assembling type prefabricated wall boards and the building boards is optimized, so that the tooth-groove type waterproof connecting structure can be widely applied to the prefabricated assembling type wall board structures and cast-in-situ composite building board structures.

The invention discloses an environment-friendly construction method for side slope reinforcement of road engineering, which comprises a rock-soil slope, a top block and a reinforcement layer. The top of one side of the rock-soil slope is fixedly connected with a top block, and one end of the rock-soil slope is fixedly connected with a reinforcement layer, the upper part of the reinforcement layer is connected with a top block, the lower part of the reinforcement layer is fixedly connected with a protective platform, one side of the rock slope is embedded with a cavity pipe, the bottom of the top block is nested and connected with an inner layer, and the top block The outer periphery of the bottom of the hollow tube is nested and connected with a cavity tube, the inside of the cavity tube is fixedly connected with an inner layer, the bottom of the inner layer is fixedly connected with an internal block, and one side surface of the internal block is fixedly connected with a soil block, and the soil block improves the device. The stabilization column improves the stability of the device, the soil nailing mechanism improves the stability of the rock and soil slope, the reinforcement mechanism improves the stability of the rock and soil slope, and the drainage mechanism improves the practicability of the main body of the device, which is suitable for slopes. The use of reinforcement devices has broad development prospects in the future.

The present invention discloses a shield construction of a two-wire overpass complex linear tunnel with small semi-diameter, shallow earth and large longitudinal slope, pertaining to the art of tunnel construction technology. The construction method provided by the present invention includes the following steps: the proceeding order of the two-wire overpass is confirmed; the shield construction model is selected; the auxiliary strengthening measures are taken for the surface, stratum and duct piece; the shield construction is advanced; the axial line is controlled and the construction is supervised; the shield construction enters into the tunnel. As the shield construction is provided with a hinged part and the sensitivity of the shield construction is increased, the present invention cancontrol the axial line of the tunnel more conveniently; due to the appropriate proposals of pressure strengthening, duct piece layout and reinforced rib, the situation of arc disintegration and the leakage of the duct piece is improved; high-frequency supervision and information feedback strictly control the parameters for advancing the shield construction. Due to the above measures, the present invention effectively controls the deformation and the displacement of the earth surface and the tunnel and reduces the complicated influences of constructing the tunnel first and last, thus ensuring the smooth construction and effective control of the tunnel deformation.

The invention discloses a construction method of a vibrating dense macroporous pervious concrete pavement. The construction method comprises the following construction steps that: S1, construction isprepared, namely materials are prepared, and concrete equipment and a mold frame for pavement laying are constructed; S2, formworks are installed on the construction pavement, the formworks define a long-strip-shaped rectangular shape, meanwhile, stirring is conducted to manufacture concrete, concrete raw materials are poured into the formworks, and the concrete is paved; S3, sandstone spreading is conducted, even spreading is conducted, a vibration motor on the outer side of the formwork is used in cooperation, manual secondary sandstone spreading is conducted, 2 kg / m<2> of sandstone is adopted, and surface finishing and calendaring are conducted through a slurry extracting machine; S4, leveling machining is conducted, and face pressing treatment is conducted; S5, after the strength of the concrete reaches 100%, ground polishing and curing and brightening treatment are conducted; and S6, form removal is conducted, joint cutting machining is conducted, then cleaning and maintenance areconducted, and machining is completed. In the concrete paving process, sand and stone are thrown for the second time and permeate into concrete, gaps are generated, water seepage is facilitated, theconstruction process is simple, the construction speed is high, and the efficiency is high.

The invention discloses a floor-type tap connecting device, which is characterized by comprising an embedded part, an upper connecting plate, a lower connecting plate, a hard water inlet pipe and a standpipe, wherein the side part of the embedded part is provided with two water inlets which are parallel to each other and coplanar, the top of the embedded part is provided with two water outlets which are parallel to each other and coplanar, the bottom surface of the upper connecting plate is provided with a small convex block, the bottom of the standpipe is provided with an external thread, the upper connecting plate and the lower connecting plate, after being in threaded connection with the bottom of the standpipe, are pressed against each other, a supporting point is formed due to the small convex block existing between the upper and lower connecting plates, and the upper and lower connecting plates are jointly locked on the embedded part through a socket head cap screw, so that triangular moments are formed so as to jointly form a stable lever supporting mechanism. Compared with the prior art, the floor-type tap connecting device disclosed by the invention has the advantage that a large supporting force is formed by using extremely small triangular moments, so that a stable effect is achieved; water paths are connected by using a hard tube, so that the floor-type tap connecting device is not bent and deformed, resists high pressure, resists expansion caused by heat and contraction caused by cold, does not burst, and has a steady flow; the device is universal and adjustable in installation angle; the floor-type tap connecting device is simple, convenient and rapid in installation.

The invention relates to a preparation method of imitated jade glass. The preparation method for imitated jade glass comprises the following steps of: polishing the both surfaces of plate glass, crushing the plate glass into blocks with sizes of 70-100 mm, cleaning and stacking in a trough layer by layer, then uniformly scattering bauxite, andalusite and silicon carbide reaction aids on the crushed glass, then heating the trough to 730-780 DEG C in 15-17 hours, insulating heat for 32-38 hours and then cooling to a normal temperature in 18-22 hours to obtain the product. The product has light-transmitting and lightproof effects, is of jade texture and many colours, is free of radioactivity of natural stone, as also has higher acid-base resistance, corrosion resistance, impact resistance and compressive strength than natural stone; the crushed particles are not sharp, cannot injury people, has good machining performance, good ageing resistance, does not absorb water, capable of persistently keeping a bright colour, and simple in installation method. The product is widely used in decoration for the interior and exterior walls, floors and furniture of buildings such as whole curtain walls, high-grade residences and clubs, is far superior to natural stone in both visual sense and tactile sense, noble and elegant in decoration effect, and is a new generation of environment-friendly decoration materials.

The invention discloses a method for producing a soil conditioner by using rice husks as a raw material. The soil conditioner comprises the following raw materials in parts by weight: 90 to 100 partsof rice husk charcoal powder, 5 to 10 parts of biological bacterium powder, 20 to 30 parts of wormcast, 15 to 30 parts of urea and 5 to 10 parts of manganese dioxide; and the rice husk charcoal powderis uniformly mixed with the biological bacterium powder, the urea and the manganese dioxide, a mixture is fermented for 1 to 2 days, then the mixture is uniformly mxed with the wormcast, and the obtained product is dried and granulated so as to obtain the soil conditioner. The soil conditioner produced by the method can improve sol properties, improve soil fertility, improve water seepage, waterretention and ventilation abilities, improve soil quality and improve crop yield.

The invention discloses a water-permeable cement concrete block and a preparation method thereof. The water-permeable cement concrete block is prepared from 80-120 parts of cement, 610 parts of mica powder, 100-120 parts of fine aggregate, 300-500 parts of coarse aggregate, 2.5-5 parts of hectorite and 100-120 parts of water. The preparation method comprises the following steps: adding hectorite into water, uniformly stirring, standing for 20-30 hours, adding the coarse aggregate, the fine aggregate and the cement, uniformly stirring, adding the mica powder, and continuously stirring for 20-40minutes to obtain pervious concrete slurry; pouring and molding the pervious concrete slurry, maintaining the molded concrete for 24-72 hours at the temperature of 25-33 DEG C, and then maintaining the molded concrete for 3-14 days in the open air. The cement concrete building block prepared by the method is small in air shrinkage deformation and good in water permeation effect, is beneficial todrainage and water seepage of a paved building block road, has a good water retention effect, and is beneficial to inhibition of ground dust pollution.

The invention belongs to the technical field of concrete materials, and in particular relates to a roadway road foundation filling composition and a preparation method thereof. The composition includes by mass: 32.5- 47.8% of a binder, 63.3- 82.4% of a coarse aggregate, 32.2- 44.5 of a fine aggregate, 10.6-18.4% of gypsum, 4.5-8.7% of fatty alcohol polyoxyethylene ether sulfate sodium, 12.3-17.5%of polyvinyl chloride cement, 3.8-7.6% of a cellulose fiber, 4.4-9.7% of citric acid, 5.2-8.3% of tartaric acid, 2.7-6.5% of aluminite, 5.4-10.8% of quicklime, 3.3-7.2% of magnesium oxide, 1.2-5.5% of kyanite, 4.6-9.6% of calcium chloride, 4.8-8.2 % of ethylene glycol and 45.7-82.6 % of water. The roadway road foundation filling composition has the advantages of easy water seepage, freezing resistance, slow condensing speed and convenient transportation.

The invention discloses a novel external thermal insulation system for an external wall. The novel external thermal insulation system sequentially comprises a base body, bonding mortar, an interface agent, plastering mortar, glass fiber gridding cloth and an external wall facing system from inside to outside, wherein a blocky rock wool belt is arranged between the interface agent and the plastering mortar, and the fiber direction of the rock wool belt is perpendicular to the base body. According to the novel external thermal insulation system, a traditional rock wool board structure is arranged to be the blocky rock wool belt, equipment such as a bracket is not needed during installation, the tensile strength is greatly improved, and the safety performance is 15 times or above that of a rock wool board system; and in addition, due to the fact that the fiber direction of the rock wool belt is perpendicular to the base body, bulging and cracking can be effectively prevented, the air permeability and the respiration are better, and the water seepage problem of a rock wool board wall body is effectively solved.

The invention discloses an environment-friendly road engineering slope reinforcing device which comprises a rock-soil slope, a top block and a reinforcing layer. The top block is fixedly connected tothe top of one side of the rock-soil slope, the reinforcing layer is fixedly connected to one end of the rock-soil slope, the top block is connected to the upper portion of the reinforcing layer in apenetrating mode, and a protective table is fixedly connected to the lower portion of the reinforcing layer. A cavity pipe is connected into one side of the rock-soil slope in an embedded mode, an inner layer is connected to the periphery of the bottom of the top block in an embedded mode, a cavity pipe is connected to the periphery of the bottom of the top block in an embedded mode, an inner layer is fixedly connected into the cavity pipe, an inner block is fixedly connected into the bottom of the inner layer, and soil blocks are fixedly connected to the surface of one side of the inner block. The stability of the device is improved through the soil blocks, the stability of the device is improved through stabilizing columns, the stability of the rock-soil slope is improved through a soilnailing mechanism, the stability of the rock-soil slope is improved through a reinforcing mechanism, the practicability of the device body is improved through a drainage mechanism, and the environment-friendly road engineering slope reinforcing device is suitable for being used as a slope reinforcing device and has wide development prospects in the future.

The invention discloses a water permeable material non-fine concrete block for a bridge abutment. The non-fine concrete block is characterized in that the non-fine concrete block is manufactured by mixing the following components in part by weight: 1 part of concrete, 0.32 to 0.33 part of water and 5.33 to 5.55 parts of stone. The manufacturing process comprises the following steps of: uniformly stirring the concrete, the water and the stones by using a forced stirrer; injecting a mixture into a standard template; sequentially performing vibration, forming and maintenance in the template; and removing the template. The non-fine concrete block and the manufacturing process have the advantages that the non-fine concrete block is an excellent water permeable material, and the problem of incapability of draining osmotic water during the conventional bridge abutment construction can be effectively solved; the non-fine concrete block is lower in volume to weight ratio, so that convenience is brought to transportation and construction; and waste non-fine concrete blocks can be crushed to form good coarse aggregate which can be recycled.

The invention discloses a filling compound for submarine optical fiber cables. The filling compound comprises components of, by mass, 70%-85% of poly-alpha-olefin synthetic oil, 6%-10% of viscosity increasing adjusting agents, 3%-6% of thixotropic agents, 0.5%-1% of antioxygen, 0.5%-1% of pour point depressants, 0.5%-2.0% of anticorrosive agents and 1%-3% of hydrogen absorption materials. An embodiment of the invention further provides a preparation method of the filling compound. The filling compound for the submarine optical fiber cables has powerful functions of water resistance, water blocking and anti-corrosion and is capable of effectively solving the problem of water seepage of a loose tube of optical fibers; and the filling compound for the submarine optical fiber cables can not perform oxidation and hydrogen evolution and has a function of hydrogen absorption so that hydrogen loss of the optical fibers can be avoided, performances of the submarine optical fiber cables are improved, and service life of the submarine optical fiber cables is prolonged.

A construction method of a water permeable cement pavement comprises the following steps: adding 2.5-5 parts of hectorite into 100-120 parts of water at normal temperature, uniformly stirring, standing for 20-30 hours, adding 300-500 parts of coarse aggregate, 100-120 parts of fine aggregate and 80-120 parts of cement, uniformly stirring, adding 6-10 parts of mica powder, and stirring for 20-40 minutes to obtain water permeable concrete slurry; paving the water permeable concrete slurry on a roadbed, carrying out flat vibration, and after the concrete is initially set, covering a film, watering and maintaining. After the concrete is dried, communicated three-dimensional pores are formed in the surface of the concrete, water absorption and water seepage can be achieved, good water-retainingproperty is achieved, and ground dust raising can be inhibited; and the mica powder is beneficial to maintaining a good pore structure of concrete. When the water permeable cement pavement is constructed, one-time forming is achieved, repeated water spraying is not needed in the maintenance process, the strength is high, the construction process is simple and convenient, and the construction period is shortened.

The invention relates to the field of garden maintenance, in particular to a roof landscape maintenance system which solves the problems that a building structure is easily threatened when nursery stocks are planted on a roof, and long-term normal growth of the nursery stocks and the stability of a building are difficult to guarantee. The roof landscape maintenance system comprises a planting area arranged on the roof, and waterproof base layers are laid on the bottom and the side walls of the planting area; and light base layers for green plants to grow are laid on the waterproof base layers, a growth area for the nursery stocks to grow is arranged in the planting area, a pruning area for root system pruning is arranged on the periphery of the growth area, a first isolation layer is arranged between the growth area and the pruning area, and a second isolation layer is arranged on the periphery of the pruning area. The roof landscape maintenance system has the effects of controlling root growth of the nursery stocks planted on the roof and facilitating maintenance of the nursery stocks on the roof.

The invention discloses a multidirectional crushing type kitchen garbage treatment device for wastewater recycling, which comprises a shell, the shell is a main protective shell of the treatment device, the top of the shell is fixedly provided with a feeding cavity, and the outer surface of the shell is provided with a maintenance plate; the motor is fixedly arranged on the top surface of the shell, and a fixing column is installed at the output end of the motor; the filter plate is fixedly arranged on the inner surface of the shell. According to the multi-directional crushing type kitchen garbage treatment device for wastewater recycling, when a square block reciprocates to drive a pressure block to move up and down, the pressure block continuously extrudes wastewater to a water filtering plate, the pressure block can well fit the shape of the water filtering plate through the material characteristics of the pressure block, and water cannot permeate into the pressure block; water is conveniently and continuously extruded to the water filtering plate through pressure to be forcibly filtered, the filtering effect is improved, and filtered waste water is conveniently recycled through the water guide holes and then is utilized to be made into kitchen waste fertilizer for fermentation.

The invention discloses a jaw-type gate for filtering through vibration. The jaw-type gate for filtering through vibration comprises a shell and a connecting flange, wherein the connecting flange is arranged above the shell; a left wedge disc and a right wedge disc are respectively arranged at the left side and the right side of the front end of the shell; the right end of the shell is provided with a support; the support is provided with an electric-hydraulic pusher connected with the right wedge disc; the left wedge disc and the right wedge disc are connected together through chains; a left vibrating machine and a right vibrating machine are respectively arranged at the left side and the right side of the shell; the lower end of the shell is also provided with a screen device comprising a screen support; the front end and the rear end of one end of the screen support are respectively provided with a fixing rod; the screen support is internally provided with 2-3 screens; and each screen is provided with a handle, and is inserted into the fixing rod to perform rotation motion. The jaw-type gate for filtering through vibration provided by the invention is compact in structure and runs stably; the gate is started up and closed flexibly; moisture in materials is filtered out effectively; and the cost is low.

The invention relates to a spraying device with a quick drying structure for machining a lampshade of a ceiling lamp. The spraying device comprises an equipment shell and a multi-section hydraulic cylinder, a first draught fan is installed at the lower end of the equipment shell, a connecting pipe is connected to the front end of the first draught fan, and a pressure relief mechanism is connected to the upper end of the connecting pipe; and a first belt conveyor, a rotating mechanism and a second belt conveyor are sequentially arranged at the lower end of the interior of the equipment shell from left to right, a second air spraying pipe is connected to one side of the rotating mechanism, a placing mechanism is connected to the upper end of the rotating mechanism, and a first electric sliding rail is installed on the upper wall of the interior of the equipment shell. The spraying device with the quick drying structure for machining the lampshade of the ceiling lamp has the beneficial effects that the air pressure in the connecting pipe can be kept at a constant value through the pressure relief mechanism, so that a rotating shaft can be driven to rotate at a constant speed when a fan blade plate is blown by constant-pressure airflow, and the equipment can spray the lampshade of the ceiling lamp more uniformly.

The material mixing device comprises a base layer, a bottom sealing layer, a reinforcing layer, an elastic particle layer and a surface spraying layer, through holes are formed in the reinforcing layer in an up-down penetrating mode at equal intervals, leakage grooves are formed in the positions, corresponding to the through holes, of the upper surface of the bottom sealing layer, and supporting pipes are installed in the leakage grooves in an inserted mode. According to the polyurethane runway, the overall strength of the polyurethane runway is improved through the arranged reinforcing layer, meanwhile, the through holes formed in the reinforcing layer facilitate extension of the supporting pipes, water seepage and ventilation of the base layer and the bottom sealing layer are facilitated through the through holes, residual water can be rapidly discharged, and the reinforcing pipes can be limited through the mounting grooves formed in the bottom sealing layer; meanwhile, the liquid leakage openings formed in the surfaces of the reinforcing pipes in a penetrating mode can rapidly filter out water in the bottom sealing layer, the bubbling phenomenon caused by the fact that water vapor cannot be rapidly diffused is reduced, the phenomena that the surface of the polyurethane runway is uneven and prone to being damaged can be effectively improved, and the reinforcing pipes can further prolong the overall service life of the bottom sealing layer.

The invention provides a composite sand fixing agent containing urban sludge. The composite sand fixing agent is prepared from the following ingredients in parts by mass: 50 to 500 parts of urban sludge dry powder and 1 to 2 parts of polyacid compounds, wherein the polyacid compounds are selected from one or several kinds of materials in polylactic acid, polyglutamic acid and polylysine. The composite sand fixing agent comprising urban sludge provided by the invention belongs to the technical field of environmental-friendly biology. The sufficient utilization of the urban sewage can be realized; the additional addition of algae strains is not needed; scaled calculation is realized; simplicity, easy implementation, low popularization cost and high biological crust efficiency are realized; the formed biological crust cannot easily break; the water seepage and water preservation are easy.

The invention discloses a machine-transplanted rice seedling raising substrate. The substrate is prepared from, by weight, 100 parts of plant ash, 30-50 parts of vermiculite and 4-6 parts of polyacrylamide particles. Compared with an existing rice seedling raising substrate, according to the machine-transplanted rice seedling raising substrate, water seepage is easy, the water-retaining property is good, raised seedlings are robust and regular, the root number is large, roots are twined compactly, and seedling pieces are not prone to break and fall apart.

The invention relates to the field of building construction, in particular to a steel structure roof ETFE buckle type PVC film closing construction method which comprises the following steps: profile installation: when a steel structure supporting frame is built, connecting and fixing a profile into which the edge of an ETFE film is clamped with the steel structure supporting frame; measuring a gap: measuring a closing gap between the profile and the decorative aluminum plate, taking the measured maximum gap width value as a processing basis of the factory manufacturing width of the PVC film, and determining a blanking length basis of shearing after the PVC film arrives at the site according to the measured gap length; the ETFE film and the PVC film with the edges provided with the connecting strips are connected with the sectional material in a clamped mode, the ETFE film and the PVC film are pressed on the sectional material in a covering mode through a gland, and then the gland is tightly connected with the sectional material; and one side, far away from the connecting strip, of the PVC film is fixed on the surface of the decorative aluminum plate by using an aluminum strip plate, so that the PVC film is used for closing up the section bar and the decorative aluminum plate. The problem that water seepage of the steel structure roof is caused by the fact that a closing-up gap is prone to occurring between the ETFE film and the decorative aluminum plate is solved.