62results about How to "Stop loss" patented technology

The invention discloses a structure for reducing tangential frost heaving force of a pile foundation in a seasonal frozen soil region and a construction method.The structure comprises a heat preservation and insulation layer, hot bars and a pile-soil isolation sleeve, the hot bars are arranged in the axial direction and annularly and evenly distributed and fixed to the inner side of a reinforcement cage of the pile foundation, and each hot bar is a closed metal pipe filled with a working medium; each hot rod comprises an evaporation section, a heat insulation section and a condensation section, the evaporation section is located in a deep non-freezing area, the condensation section is located in a seasonal frozen soil layer, the heat insulation section is located between the evaporation section and the condensation section and below the maximum freezing depth, and the evaporation section is filled with working medium liquid; in winter, the working medium liquid is evaporated and converted into working medium steam through the heat insulation section to enter the condensation section under the action of the up-down temperature difference, and in the condensation section, the working medium steam is condensed into a liquid phase to penetrate through the heat insulation section to fall back into the evaporation section. Tangential frost heaving force can be weakened, and pile periphery freezing depth and pile foundation freezing pulling development are restrained.

The invention discloses a silver-based tin oxide electric contact material and a preparation method thereof, and relates to the technical field of electric contact materials. When the silver-based tin oxide electric contact material is prepared, firstly, a high-temperature solid-phase method is used for doping lithium and cerium to prepare doped tin oxide powder; stannic chloride and copper nitrate are prepared into a fiber membrane through electrostatic spinning, meanwhile, titanium dioxide is grown in situ through nano spraying, and doped stannic oxide fibers are prepared after calcination; the doped tin oxide powder, doped tin oxide fibers and silver powder are subjected to high-energy ball milling and powder mixing and then annealed, and silver-based tin oxide composite powder is obtained; the silver-based tin oxide composite powder is subjected to pre-pressing forming and then subjected to vacuum discharge plasma sintering, and the silver-based tin oxide electric contact material is prepared. The prepared silver-based tin oxide electric contact material has the advantages of being low in resistivity, high in fusion welding resistance, good in arc erosion resistance and easy to machine and shape.

The invention discloses an electro-catalytic hydrogen evolution catalyst taking an alloy as an active metal and a preparation method and application thereof, SiO2 is prepared by a hydrothermal method, CuSiOx is formed by doping Cu, and finally non-noble metal is loaded and is replaced and reduced by noble metal or a reducing agent is added to form an alloy which is loaded on the CuSiOx. The CuSiOx has a large specific surface area and can effectively load an alloy formed by non-noble metal and noble metal, the dispersity of the CuSiOx is greatly improved, the reaction area of the catalyst is increased due to the porous structure, and the hydrogen evolution activity of the catalyst is improved. The catalyst has excellent hydrogen evolution activity when the loading capacity of precious metal is low, the overpotential is 24 mV when the current density is 10 mA / cm < 2 >, and after 1000 times of volt-ampere cycle tests, the overpotential can still be kept at 25 mV and is better than that of a 20 wt% Pt / C catalyst.

The invention provides a sodium ion positive electrode material and a preparation method thereof. The sodium ion positive electrode material comprises a layered oxide NaxMyNzTiON and phosphonic acid molecules coating the surface of the layered oxide, the mass of the phosphonic acid molecules accounts for 1-5% of the mass of the layered oxide matrix Na < x > M < y > N < z > TiON; wherein M, N and T are different types of metal elements and are selected from one or more of Ni, Fe, Mn, Li, Ca, Al, Mg, Zr, Nb, Ta, Ti, Sn, Co and Cu; 0.66 < = x < 1.1, 0 < = y < = 1, 0 < = z < = 1, 0 < = i < = 1, y + z + i = 1, 1.85 lt; nlt; 2.15, 2.15; the values of x, y, z, i and n meet the charge balance of the chemical formula. According to the sodium ion positive electrode material, the chemical stability of a layered oxide material in ambient air can be remarkably improved, so that the electrochemical performance of the sodium ion positive electrode material is maintained.

The utility model discloses a water and soil conservation ecological protection slope which comprises an original soil layer, and the original soil layer is covered with construction slag. The tail end of the platform drainage ditch is communicated with the side face of the side drainage ditch, a bottom step is arranged on the bottom face of the inner side of the side drainage ditch, a drainage pipe is fixed to the middle of the masonry slag blocking wall in a penetrating mode, and an inverted filter layer is installed at the end, close to construction slag, of the drainage pipe. The top end of the compacted slope is connected with one side of a top drainage ditch, top covering soil is arranged on the surface of the construction slag body on the other side of the top drainage ditch, and a grouted rubble drainage ditch is installed at the tail end of the top covering soil. According to the water and soil conservation ecological protection slope, a novel structural design is adopted, slag bodies generated in the whole construction process are effectively utilized, surface runoff is effectively guided through the multiple drainage ditches, water and soil loss is avoided, meanwhile, accumulated water flow is discharged at the slope bottom, it is guaranteed that the whole slope body is stable, and the service life of the slope body is prolonged. Meanwhile, the artificial traces can be covered by vegetation, and local ecology multidirectional restoration is facilitated.

The invention provides a dynamic measurement device and a dynamic measurement method for a heat conductivity coefficient under a high-temperature condition. The dynamic measurement device for the heat conductivity coefficient under the high-temperature condition comprises a furnace body; the heat preservation layer is located in the furnace body; the sample sleeve assembly is used for installing the sample disc and forming a uniform temperature surface, and the sample sleeve assembly comprises a heat protection plate which is used for being installed at one axial end of the sample disc; the heating assemblies comprise heating units located in the heat preservation layer, the heating units are arranged at the two ends of the sample sleeve assembly, the heat protection plate is located between the sample disc and one heating unit, the two heating assemblies are independently controlled, and the power is adjustable; and the temperature measuring probes are located at the two ends of the furnace body, and the heat preservation layer and the heating assembly are provided with light path channels avoiding the detection paths of the temperature measuring probes. In this way, the heating assemblies at the two ends of the sample sleeve assembly can provide enough heating power, and a uniform temperature field can be formed easily. And the heat protection plate at only one end is convenient for carrying out temperature rise control on a single shaft end.

The utility model discloses a boiler waste heat recovery device, which relates to the technical field of boilers and comprises a heat insulation box, a heat exchange tube is fixedly arranged in the heat insulation box, the left surface of the heat insulation box is fixedly connected with a filter box, and the inner surface of the filter box is provided with a first U-shaped limiting groove and a second U-shaped limiting groove. A first U-shaped limiting groove and a second U-shaped limiting groove are formed in the filter box, a filter plate is inserted into the first U-shaped limiting groove, an activated carbon adsorption plate is inserted into the second U-shaped limiting groove, and an opening of the filter box is connected with a box cover in an abutting mode. The lifting plate and the box cover can be driven to move upwards through upward movement of the threaded rod, so that the filter plate and the activated carbon adsorption plate can be pulled out, the filter plate and the activated carbon adsorption plate can be quickly disassembled, and the filter plate and the activated carbon adsorption plate can be conveniently cleaned or replaced.

The utility model provides a constant temperature incubator, which relates to the technical field of constant temperature equipment, and comprises a protection mechanism, a fixing mechanism is arranged in the protection mechanism, the protection mechanism comprises a box body, a hollow shell is arranged on one side of the box body, a folding arm is arranged on the inner wall of the hollow shell, a back plate is arranged at one end of the folding arm, and the back plate is arranged on the inner wall of the box body. And a side plate is arranged on one side of the back plate. The motor is started, so that the bottom end of the folding arm on the lead screw is moved upwards, the folding arm is gradually expanded along with the upward movement of the folding arm, the arm of the folding arm is extended, the back plate is gradually moved from the interior of the box body to the edge of the port of the box body in the extending process, and meanwhile, the partition plate is exposed out of the box body. Therefore, articles can be placed more easily, and a larger space can be provided for operation.

The utility model relates to the technical field of valve paint spraying and drying, in particular to valve paint spraying and drying equipment which comprises a drying machine, a gas transmission machine and a blocking device, the gas transmission machine is fixedly connected with the top end of the drying machine, and the blocking device is arranged on the surface of the drying machine and comprises a supporting rod which is fixedly connected with the surface of the drying machine. The supporting rod is located on one side of the gas transmission machine, and a rotating plate is rotationally connected to the surface of the supporting rod and located on one side of the drying machine. According to the valve paint spraying and drying equipment, by arranging the blocking device, loss of flying paint and heat is effectively blocked, when the valve paint spraying and drying equipment is used, the device is used, the baffle is rotated, the situation that dripping paint is blown out of the equipment when the valve paint spraying and drying equipment dries materials is avoided, and the practicability of the valve paint spraying and drying equipment is improved; the auxiliary performance of the valve paint spraying and drying equipment is improved, the blocking performance of the valve paint spraying and drying equipment is improved, and the working efficiency of the valve paint spraying and drying equipment is improved.

The invention belongs to the technical field of diaphragm wall construction, and particularly relates to a water-rich round gravel stratum diaphragm wall construction cement paste composition, a preparation method and application. The cement paste composition per cubic meter comprises the following raw materials in parts by weight: 170-200 parts of bentonite, 8-15 parts of sodium carbonate, 4-8 parts of CMC, 1-2.5 parts of caustic calcined magnesite, 1-2 parts of an adhesive and 900-1000 parts of water. The cement paste composition further comprises sawdust, and the sawdust accounts for 4-8% of the cement paste composition in percentage by weight. Slurry for underground diaphragm wall construction is compounded, and on the basis of the base material bentonite, sodium carbonate, CMC, caustic calcined magnesite and an adhesive aid which are used for improving the overall viscosity of the slurry composition are added, so that the viscosity, specific gravity and stability of the slurry are further improved, and the wall protection effect is improved. On the basis of the compound composition, 4-6% by weight of sawdust is further added, the sawdust is circularly suspended and distributed in the slurry through the slurry, and the sawdust is taken away and filled in gaps of groove walls when the slurry is diffused and lost, so that the loss of the slurry is blocked.

The utility model discloses an auxiliary moisture removal device which comprises a treatment box, an air inlet pipe and an exhaust pipe, the middle of the bottom end of the treatment box is connected with a connecting box in a penetrating mode, the air inlet pipe is connected with the interior of the treatment box in a penetrating mode through the connecting box, an installation groove is formed in the connecting box, and a sponge block is installed in the installation groove. And drainage openings are formed in the two sides of the bottom end in the treatment box in a penetrating mode, water storage tanks are connected to the bottom ends of the two drainage openings and located on the two sides of the bottom end of the treatment box, and the positions above the two drainage openings are above the two drainage openings. The wet and hot air purifier has the advantages that loss of some hot air can be stopped through the sponge block in the connecting box, moisture in part of wet and hot air can be absorbed, water drops in the rest of wet and hot air are attached to the guide plate after encountering the guide plate and flow downwards along the inclined guide plate, and therefore the water drops in the wet and hot air can be purified. And the water is discharged into the water storage tank through the water outlet for storage, so that waste of a large amount of energy is avoided.

The utility model relates to the technical field of building construction drainage holes, and discloses a retaining wall drainage hole water filtering structure which comprises a baffle, a mounting frame and a replacement plate, the baffle is arranged on one side of a retaining wall, a drainage hole is formed in the middle of the baffle, and the replacement plate is inserted into the inner wall of the drainage hole and attached to the baffle. The retaining wall drain hole water filtering structure comprises a mounting frame and a baffle, the mounting frame is detachably connected with the baffle through a clamping mechanism, the upper surface of the mounting frame is detachably connected with a separation net used for filtering soil, and fixing mechanisms are arranged on the two sides of the bottom of the mounting frame and used for fixing geotechnical cloth. Through cooperative arrangement of the mounting frame, the separation net and the fixing mechanism, the separation net can be fixed to the mounting frame, a filtering material is added into the separation net, the water filtering effect can be achieved, soil loss is prevented while internal accumulated water is drained, and the geotechnical cloth can be fixed to the outer portion of the mounting frame in cooperation with the fixing mechanism arranged outside.

The invention discloses a leaking stoppage method and structure for a leaking hole of a foundation pit support structure in a soft soil area. The method comprises the steps that the leaking hole of the foundation pit support structure is cleaned; a plugging plate is installed at the leakage hole to construct a first plugging structure for the leakage hole, and the leakage hole is sealed and plugged through the first plugging structure; quick-setting cement slurry is injected into the leakage hole through the first channel sealing structure to construct a second channel sealing structure for the leakage hole, and the leakage hole is internally filled and plugged on the inner side of the foundation pit through the second channel sealing structure; soil is backfilled in the foundation pit on the side where the leakage holes are located; punching and grouting outside the pit to construct a third blocking structure for the leakage hole, and performing external filling and leaking stoppage on the leakage hole through the third blocking structure; and backfill soil in the foundation pit is removed. The method has the advantages of being simple in leaking stoppage process, convenient to construct, high in leaking stoppage speed, short in leaking stoppage period and good in leaking stoppage effect.

This utility model discloses an automatic adjustment device for furnace door sealing in a strip steel coating production line, relating to the field of continuous strip steel coating technology. The utility model includes a mounting frame, inside which two sets of adjustable shielding components are symmetrically arranged. Driving components are located at the top and bottom of the mounting frame, and are connected to the driving ends of the adjustable shielding components. This utility model guides the strip steel into the curing furnace between the two adjustable shielding components. The driving components then drive the two sets of adjustable shielding components, causing the two shielding ends to move synchronously towards the strip steel surface, thus forming a small gap with the strip steel. This arrangement allows the distance between the two shielding ends to be flexibly adjusted according to the strip steel thickness. Simultaneously, during the strip steel curing process, it effectively prevents rapid heat loss from the curing furnace between the two shielding ends, thereby avoiding incomplete curing of the strip steel due to temperature fluctuations within the furnace.

The invention provides anti-rust oil for protecting the surface of a mechanical part and a preparation method of the anti-rust oil, and the anti-rust oil comprises the following components in parts by weight: 60-80 parts of base oil, 5-7 parts of high-base-number barium sulfonate, 1-3 parts of oxidized petrolatum barium soap, 0.1-2 parts of pentaerythritol oleate, 3-6 parts of an anti-rust agent and 1-2 parts of a metal deactivator. The anti-rust oil is good in stability, the damp heat test can reach 62 days or above, the anti-rust period can reach 35 days or above, gasoline, kerosene and naphthenic oil serve as base oil, the viscosity of the base oil is reduced, and the modulation performance and the low-temperature fluidity of the base oil are improved; dodecenylsuccinic acid, barium dinonyl naphthalene sulfonate, triethylene diamine and hexadecanedioic acid are synergistically used as an anti-rust agent, so that the anti-rust effect is optimal; 2, 4-dimethyl-6-tert-butylphenol is used for preventing or delaying the anti-rust oil from being automatically oxidized to generate oil sludge or colloid due to the heating effect, and the stability performance is improved.

The invention discloses a fluid loss agent for multipolymer oil well cement and a preparation method thereof, and belongs to the technical field of fluid loss agent preparation. The fluid loss agent for the multipolymer oil well cement is prepared from the following components in parts by weight: 42 to 56 parts of high-molecular polymer, 4 to 6 parts of bentonite, 1 to 3 parts of disodium ethylene diamine tetraacetate, 10 to 13 parts of composite hydrating agent, 8 to 12 parts of distilled water and 0.2 to 0.4 part of ammonium persulfate, the high-molecular polymer is prepared from dimethylamino propyl acrylamide, 2-acrylamido-2-methylpropanesulfonic acid, glycidyl methacrylate, 3-propyl-2-olefin acyloxy propane-1-sodium sulfonate and 2-aminoethanethiol, and the molecular polymer is prepared from the following components: 2-dimethylamino propyl acrylamide, 2-acrylamido-2-methylpropanesulfonic acid, glycidyl methacrylate, 3-propyl-2-olefin acyloxy propane-1-sodium sulfonate and 2- the composite hydrating agent is prepared from acrylic acid, 2-acrylamido-2-methylpropanesulfonic acid, sodium lignin sulfonate, corn fiber and butyl succinic anhydride. The fluid loss agent prepared by the method has excellent fluid loss performance, temperature resistance and salt resistance.

This invention relates to the field of biofuel technology, specifically to a silicate-aluminate confined palladium nanoparticle catalyst, its preparation method, and its applications. The catalyst uses a silicate-aluminate molecular sieve with a CDO topology as a support, and palladium nanoparticles are confined within the sieve channels through in-situ synthesis; the palladium loading is 0.1~3 wt%. A gel is prepared using a silicon source combined with an aluminum source, a palladium source, a mineralizing agent, and a template agent. The catalyst is then obtained through crystallization, calcination, and ion exchange. The catalyst can be used in the one-step reduction and etherification of furfural to produce furfuryl ether, using hydrogen as a reducing agent and furfural alcohol solution as a raw material, reacting under H2 pressure conditions of 0.5~3 MPa to obtain furfuryl ether. This invention uses furfural as a raw material to synthesize furfuryl ether in one step, achieving almost complete furfural conversion, with a furfuryl ether selectivity exceeding 85%. It eliminates the need for external solid or liquid acids as catalysts for the etherification reaction, resulting in a simple process with low energy consumption, facilitating industrialization.

The invention discloses a port channel slope protection structure which comprises a slope body which comprises an upper slope platform, a slope surface and a lower slope platform. The slope surface protection plates are arranged on the upslope platform and the slope surface in a step shape, the platform of the slope surface protection plate at the highest step is parallel to the upslope platform, and the ladder section of the slope surface protection plate at the lowest step is located at the bottommost part of the slope surface; the bench of any step of slope protection plate is located on the slope; the first water drainage channel comprises an inclined water groove formed in the slope protection plate and a horizontal water groove formed in the downhill platform through an anti-collision groove; a plurality of water seepage holes are formed in the surface of the inclined water tank, the inclined water tank is communicated with the horizontal water tank, and a water outlet is formed in the end part of the horizontal water tank; wherein a plurality of connecting inserting openings are formed in the bottom of the platform of any step of slope surface protection plate, a plurality of anchor rods are arranged on the upslope platform and the slope surface, one section of each anchor rod is inserted into the slope body, and the other end of each anchor rod extends into the corresponding connecting inserting opening. The slope protection structure can be effectively prevented from being scoured by water flow.

The present invention discloses a portable specimen rapid drying device, comprising a box shell, the box shell comprising an upper body and a lower body detachably connected to the upper body, a nylon cloth is arranged between the edge of the bottom opening of the upper body and the edge of the top opening of the lower body, an aluminum alloy telescopic rod is fixed to the four corners of the inner bottom end of the lower body, the top of the aluminum alloy telescopic rod is fixedly connected to the upper body, an opening is provided on the nylon cloth, an arched zipper is provided at the edge of the opening, a curtain is connected to the opening through the arched zipper, two symmetrically arranged slide rails are arranged in the lower body, a plurality of specimen racks are slidably connected between the two slide rails, a heating tube is arranged in the lower body, the heating tube is located below the slide rail, and the heating tube is electrically connected to a power line. The present invention improves the traditional specimen drying device and provides convenience for field sampling.

This invention relates to the field of submerged arc welding equipment technology and discloses a fully automatic submerged arc welding machine, including a rotating frame, a moving carriage, a C-shaped frame, a welding mechanism, a feeding mechanism, and a suction device. The C-shaped frame is mounted on the moving carriage, and an adjustment table is provided at the upper end of the C-shaped frame. A frame is provided on the adjustment table, and the welding components of the welding mechanism are mounted on the frame. When performing double-sided straight seam welding on the workpiece, a straight plate protective material mechanism is installed at the end of the C-shaped frame. The straight plate protective material mechanism includes a straight plate protective material mechanism installed at the end of the C-shaped frame, which symmetrically clamps the weld seam of the workpiece. When performing circumferential double-sided welding on the workpiece, an annular plate protective material mechanism is installed on the inner and outer sides of the joint of the two workpieces. This invention realizes fully automatic double-sided welding operation, effectively solves the core problems such as complicated process, rapid loss of molten pool temperature, loss of weld liquid, and poor formation, and greatly improves welding efficiency and weld formation quality. It is suitable for double-sided welding scenarios of straight seam and circumferential seam.

The intelligent bathtub with the massage function comprises a bathtub body and an edge arranged on the outer side of the bathtub body, a massage headrest is arranged in the left side of the bathtub body, a rotating seat is arranged on the upper right side of the bathtub body, a water inlet pipe is arranged on the upper side of the rotating seat, and a water outlet pipe is arranged on the lower side of the rotating seat. A water outlet is formed in the right lower side of the bathtub body, a water level sensor is arranged in the upper portion of the left rear side of the bathtub body, and the shielding cloth can effectively shield water, prevent the water level from splashing along with shaking of the body during bathing, prevent the ground of a bathroom from being wetted and reduce the slipping risk; and meanwhile, a barrier formed by the shielding cloth can protect the privacy of the user, so that the user is more relaxed in the bathing process. Besides, the tightened shielding cloth arranged in a suspended mode provides an extra space for containing light objects such as bath goods and reading materials for the user, the user does not need to frequently get up to take the objects, and convenience and comfort in the bathing process are greatly improved.

This invention relates to a method for preparing and applying a polypyrrole-coated indium-based electrocatalyst. The method includes the following steps: adding carbon nanotubes to an N,N-dimethylformamide solution containing indium nitrate, transferring the solution to a high-temperature reactor, and reacting to obtain In₂O₃ / CNT; placing the In₂O₃ / CNT in an aqueous solution containing pyrrole, and then adding ammonium persulfate to react, thereby obtaining the polypyrrole-coated indium-based electrocatalyst. The polypyrrole-coated indium-based electrocatalyst obtained by this invention exhibits excellent electrocatalytic performance in the reduction of carbon dioxide to formic acid, possessing both high Faradaic efficiency and long-term catalytic stability.

The utility model relates to the field of building construction technology, concretely relates to a cantilever type retaining wall, including wall panel, wall toe board and wall heel board, the wall panel vertical setting, wall toe board and wall heel board set up in the both sides of wall panel respectively, wherein, the intersection of wall toe board and wall heel board both with wall panel is equipped with reinforcing body, the reinforcing body is equipped with reinforcing steel bar in, the lower part of wall panel is equipped with tenon, the tenon is set up and inclines to wall heel board, the retaining wall below is equipped with high pressure rotary jet pile and graded broken stone cushion, the graded broken stone cushion is laid in the downside and the inside and outside of wall toe board and wall heel board, a plurality of drainage channels are equipped on the wall panel, the back of drainage channel is equipped with filter back layer, the filter back layer includes the bagged gravel layer and bagged broken stone layer of alternately arranged. Therefore, can prevent the soil body loss and guarantee the smooth drainage more effectively and more durable.

The invention discloses an energy-saving charcoal fire barbecue oven with a multi-section temperature control function. Comprising a barbecue oven; the barbecue oven is composed of an oven body and a smoke extraction mechanism, the bottom end of the oven body is installed at the bottom end of the support, a containing plate is installed at the position, located at the bottom end of the oven body, of the upper end of the support, an air inlet is formed in the front end of the oven body, an air inlet adjusting mechanism is installed at the position, corresponding to the air inlet, of the upper side of the oven body, and a collecting mechanism is slidably installed below the rear end of the oven body. A grating is installed in the middle of the interior of the oven body, a plurality of carbon boxes are arranged side by side at the upper end of the grating in the oven body, and barbecue grids are arranged at the upper end of the oven body corresponding to the upper ends of the carbon boxes. According to the multi-carbon-box design, charcoal fire segmented control is achieved, the carbon boxes can be flexibly started according to the number of food materials and barbecue requirements, charcoal fire waste is reduced, and the energy-saving effect is achieved; the air inlet adjusting mechanism accurately controls air, so that sufficient combustion of charcoal fire and stable fire behavior are guaranteed; the smoke extraction mechanism is high in smoke extraction efficiency, and the barbecue environment is improved; the collecting mechanism is convenient to clean, and use experience is improved.

The application discloses a quartz sand sorting screen device capable of preventing material blocking, relates to the technical field of quartz sand sorting, and comprises a screen box, a screen frame, a sorting screen body, a vibration exciter, a base frame and a PLC electric control system, further comprises a micro elastic self-vibrator, an auxiliary screen cleaning assembly, a pulse jet screen cleaning assembly, a material loosening assembly and a piezoelectric film sensor. During the vibration sorting process, the micro elastic self-vibrator is used to generate high-frequency micro-amplitude vibration for cleaning the screen hole, the piezoelectric film sensor is used to detect the degree of material blocking in real time, different strength of the anti-blocking strategy is automatically triggered according to the material blocking grade, the micro elastic self-vibrator is accurately applied to the screen hole to break the material bridge, the ultrasonic wave is used to assist in loosening the fine particle blocking, the pulse jet is used to reverse blow and clean the stubborn blocking, and the micro elastic self-vibrator, the ultrasonic wave screen cleaning and the pulse jet reverse blow are cooperated to form a multi-dimensional cooperative screen cleaning structure, so that the accurate detection and grading of the material blocking is realized.

The invention belongs to the technical field of boiler protection materials. The invention relates to a non-crystalline material, in particular to an erosion-resistant non-crystalline material for a large circulating fluidized bed boiler and a preparation method thereof. The product provided by the invention comprises the following elements in parts by mole: 45 to 50 parts of Fe, 20 to 22 parts of Cr, 5.0 to 5.5 parts of Mo, 3.0 to 3.5 parts of W, 10 to 12 parts of B, 3.0 to 3.2 parts of C, 8.0 to 8.5 parts of Ni, 4.0 to 4.5 parts of Co, 2.2 to 2.5 parts of Mn and 0.4 to 0.6 part of Y; the amorphous material is in a pre-alloyed powder form, the microstructure of the amorphous material takes an amorphous phase as a matrix, and crystal phases with the size smaller than 50nm are dispersed and distributed in the amorphous phase; the degree of sphericity of the pre-alloyed powder is larger than 0.85, and the oxygen content of the pre-alloyed powder is lower than 600 ppm. The obtained material can effectively solve the problem that a formed oxidation film is prone to cracking and peeling off in the boiler thermal cycle process, and consequently the protection capacity of a coating formed in the using process on a boiler is attenuated.

The utility model discloses a water and soil conservation ecological slope protection structure which comprises mounting seats, adapter plates and a slope surface, the adapter plates are arranged at the tops of the mounting seats, the adapter plates and the mounting seats are rotationally connected through shaft rods, and a plurality of structures matched with the mounting seats, the adapter plates and the shaft rods are arranged. A plurality of mounting seats, adapter plates and shaft rods are arranged on the top end and the bottom of the slope surface respectively, a plurality of longitudinal baffle plates are uniformly arranged between the adapter plates at the top and the bottom of the slope surface, a plurality of transverse baffle plates are uniformly arranged on the longitudinal baffle plates from bottom to top, and the transverse baffle plates are clamped on the longitudinal baffle plates. Mounting seats are arranged at the top and the bottom of the slope, adapter plates are arranged at the tops of the mounting seats, a plurality of longitudinal baffles are clamped to the two adapter plates, a plurality of transverse clamping plates are transversely clamped to the longitudinal baffles, and in this way, water and soil loss on the slope can be effectively prevented through cooperation of the longitudinal baffles and the transverse baffles.

The utility model discloses a kind of off-car drive systems and electric shovel suitable for extremely cold working condition, including temperature monitoring protection system, cable protection sleeve, sealing component, current collector ring, off-car drive motor and the motor drive cable of both electrical connections, wiring cabinet is equipped on off-car drive motor;Temperature monitoring protection system is used to detect the ambient temperature of the off-car drive motor, only when the detected ambient temperature value reaches preset temperature value, off-car drive motor can be started;Cable protection sleeve is used to wrap the motor drive cable, play heat insulation function;Sealing component is arranged at the gap between the box of wiring cabinet and box cover, play sealing insulation function.The technical scheme provided by the utility model improves the adaptability of electric shovel off-car drive system to extremely cold working condition.

The retaining wall structure with the inverted filtering function comprises a concrete retaining wall and a decorative plate, a built-in cavity is formed in the front end of the concrete retaining wall, positioning rods are fixed to the left side and the right side of the inner wall of the built-in cavity, a second adhesion plate is arranged in the middle of the inner wall of the built-in cavity, the decorative plate is arranged on the front side of the built-in cavity, and the inner wall of the decorative plate is provided with an inverted filtering function. And a fixing strip is arranged on the inner wall of the decorative plate, and an insertion hole is formed in the fixing strip. According to the retaining wall structure with the inverted filtering function, the geotextile inverted filtering layer mainly has the functions of filtering, water drainage and protection in the concrete retaining wall, the geotextile inverted filtering layer can effectively prevent soil particles from entering a water drainage system along with water flow, the water drainage system is prevented from being blocked, and smooth water drainage is kept; the geotextile inverted filter allows water to be discharged through the geotextile material, the water pressure behind the retaining wall is reduced, the stability of the retaining wall is enhanced, the geotextile inverted filter prevents soil erosion and loss, and the retaining wall structure is protected against damage.

The invention belongs to the technical field of outdoor jackets, and particularly relates to a composite waterproof breathable outdoor jacket which comprises a jacket body provided with a collar and sleeves. The cloth of the garment body is of a three-layer composite structure and comprises a heat preservation layer, a breathable layer and a protective layer from inside to outside; a cloth cylinder is fixed to the inner side surface of the collar and is in an arc shape, and a tensioning rope is inserted into the cloth cylinder in a sliding mode. Through the three-layer composite structure of the clothes body cloth, the comfort level of a wearer is effectively improved, and the sports safety of the wearer in a severe environment is guaranteed; the tensioning rope of a tubular structure is matched with the cloth barrel on the inner side surface of the collar, so that the stretching-out tensioning rope is pressed, airflow in the tensioning rope is promoted to intensively flow to the tensioning rope part located in the collar, the wrinkled part is flattened, the size of a gap between the collar and the skin is reduced, loss of heat of a human body is better prevented, and the comfort of the human body is improved. The thermal insulation effect is achieved on the human body, and the safety of a wearer of the outdoor jacket in the cold environment is guaranteed.