544results about How to "Realize blocking" patented technology

The present invention relates to the technical field of glass blowing, and in particular to a glass product blowing molding device and method, comprising an openable and closable primary mold installed on a base, a liftable blind mold arranged above the primary mold, a liftable reverse blowing mechanism arranged below the primary mold, a transfer mechanism arranged in the middle of the base, an openable and closable forming mold arranged at one end of the base, and a liftable upper blowing assembly arranged above the forming mold. In the present invention, through the arrangement of a closed module, after the drip material is inflated to a prototype, the core rod in the reverse blowing mechanism moves downward and is separated from the jaw module, so that the closed module is turned into a closed state, the bottom end of the prototype is blocked, part of the air pressure is retained inside the prototype, and the internal air pressure of the prototype is greater than the external air pressure, thereby reducing the collapse and bending degree of the prototype, and adapting to the blowing process of a longer bottle body.

The invention belongs to the technical field of farmland irrigation, and particularly relates to an intelligent farmland water conservancy irrigation pump station which comprises a pump station room connected with a control system of an intelligent farmland, a water inlet pipe opening of the pump station room is communicated with a nearby water area, and a water outlet pipe opening of the pump station room is communicated with a water pump on a water storage tank through a guide pipe. The bottom end of the water storage tank is communicated with an irrigation header pipe through a guide pipe, the side face of the irrigation header pipe is detachably communicated with a plurality of flow dividing pipes, the side face of each flow dividing pipe is detachably connected with a plurality of drip irrigation hoses through a plurality of communicating guide pipes, and each drip irrigation hose is annularly laid around the root of a plant through an annular water retaining mechanism. The annular water retaining mechanism is used for retaining drip irrigation water or fertilizer water dripped on the roots of the plants by the drip irrigation hose; according to the annular drip irrigation device, a fertilizer solution can be sprayed to the roots of plants in an annular drip irrigation mode according to needs, so that the drip irrigation fertilizer solution can be fully immersed in the roots of the plants for fertilization, and loss and waste of the fertilizer solution cannot be caused.

The invention discloses a fiber ring repairing device. The fiber ring repairing device comprises a degradable elastic restraining bag and filler filled in the elastic restraining bag. Space in the elastic constraint bag comprises a positioning space, a supporting space and a limiting space, and the filler comprises first filler and second filler. The first filler is located in the positioning space, fixed in shape to form a positioning part, located on the outer side of the fiber ring crevasse and used for conveying and positioning. Corresponding parts of the supporting space and the limiting space in the elastic constraint bag can be folded under the non-filling condition and then enter the fiber ring crevasse, and then the second filling part flows into the supporting space and the limiting space and forms a supporting part and a limiting part after being solidified. And the part, corresponding to the supporting space, in the elastic constraint bag can be elastically deformed under the filling of the second filler so as to adapt to the shape of the crevasse of the fiber ring. The limiting part is located on the inner side of the fibrous ring crevasse, provided with a limiting face abutting against the inner side wall of the periphery of the fibrous ring crevasse and used for preventing the fibrous ring repairing device from being extruded out of the fibrous ring crevasse by the nucleus pulposus.

The invention discloses a reinforced concrete hanging box structure and a construction method thereof.The reinforced concrete hanging box structure comprises a hanging box wall body with a built-in compartment, a bottom plate with a bottom hole capable of being opened and closed, a guiding device and a hanging and pressing system, the hanging box wall body and the bottom plate are integrally connected in a sealed mode before hanging, and the bottom hole capable of being opened and closed is formed in the bottom plate; up-down floating of the steel hanging box is achieved by controlling the water volume of the compartment, the steel hanging box can adapt to tidal level changes in a shallow sea area, the bottom plate is provided with a large-size bottom hole, the steel hanging box can downwards penetrate through a steel casing when the steel hanging box is put down, and the procedure of additionally installing and connecting the bottom plate underwater in traditional steel-concrete hanging box construction is omitted; the inner side of the steel hanging box can be blocked by closing the baffle, pouring and sealing are efficiently and rapidly carried out, the construction period is remarkably shortened, the construction efficiency is improved, meanwhile, the arranged steel hanging box structure can be flexibly operated in a shallow sea area, dependence on traditional construction equipment is reduced, the construction cost is reduced, and the influence on the environment is reduced.

The invention belongs to the technical field of underwater concrete grouting repair, and particularly relates to an underwater grouting head and an underwater grouting device.The underwater grouting head comprises a grouting nozzle, a first grouting connector and an elastic sleeve, the grouting nozzle and the first grouting connector are both arranged in an axial through mode so as to form a channel for grout to flow, and the elastic sleeve is arranged in the channel; one end of the grouting nozzle is axially arranged in the first grouting connector in a penetrating mode and is in axial sliding connection with the first grouting connector, the grouting nozzle is sleeved with the elastic sleeve, one end of the elastic sleeve is fixed to the grouting nozzle, and one end of the first grouting connector is axially arranged between the other end of the elastic sleeve and the grouting nozzle in a penetrating mode. A first conical surface with the outer diameter gradually increasing towards the direction where the other end of the first grouting connector is located is arranged on the outer side wall of the end of the first grouting connector, and a groove is formed in the side, away from the elastic sleeve, of the first conical surface on the outer side wall of the first grouting connector. And the underwater operation difficulty of the robot is reduced, the repair operation efficiency is improved, and the repair quality is guaranteed.

The invention discloses a bag-type dust collector, and relates to the technical field of dust collection equipment, the bag-type dust collector comprises a filter box, a bag filter mechanism and a pulse cleaning mechanism, the bag filter mechanism and the pulse cleaning mechanism are arranged in the filter box, and the pulse cleaning mechanism is arranged above the bag filter mechanism; the cloth bag filtering mechanism comprises a plurality of filtering bags for filtering dust-containing gas; the bag-type dust collector further comprises an isolation mechanism used for pushing the damaged filter bag to be compressed and folded in the axial direction of the bag-type dust collector. By arranging the isolation mechanism, when the side face of the filter bag is damaged, the winding mechanism pulls the connecting rope to be wound, the filter bag can be compressed and folded, the damaged filter bag is completely isolated, dust-containing gas cannot be directly guided out through the damaged filter bag, and normal filtering work of other filter bags is not affected; therefore, the bag-type dust collector can continuously filter.

The invention discloses an occlusion device for generating cervical occlusion pressure and a method of using the same. The plugging device comprises a suction cup, the lower portion of the suction cup is in an outer arc shape, and the middle of the suction cup is connected with a hysteroscope access plugging pipe. The upper end of the first air bag is connected with an air feeding pipe, the outer side of the air feeding pipe is connected with the outer side of the hysteroscope access plugging pipe, and the end, away from the first air bag, of the air feeding pipe penetrates through the suction cup and is connected with the second air bag. Under the action of the vacuum pump, air between the suction cup and the outer wall of the cervix uteri can be sucked out, at the moment, air pressure between the suction cup and the outer wall of the cervix uteri becomes low and is smaller than external atmospheric pressure, and air pressure difference is formed, so that the suction cup can be adsorbed to the outside of the cervix uteri, and after the suction cup is adsorbed to the outside of the cervix uteri, the effect of blocking the cervix uteri can be achieved; normal saline is prevented from flowing out of the cervix, and the stability of the suction cup can be improved under the action of the first air bag.

The utility model discloses a stable embedded sleeve, which belongs to the technical field of railway engineering and comprises a sleeve body component, a stabilizing component and a sealing cover component. The cylinder component is of a columnar structure, a containing space extending in the axis direction of the columnar structure is formed in the top end face of the cylinder component, and the connecting component is detachably connected into the containing space. The stabilizing components are all arranged on the outer wall face of the cylinder component, and a plurality of protruding parts are formed on the outer wall face of the cylinder component. The sealing cover component is arranged at the opening of the containing space and used for opening or blocking the opening of the containing space. The utility model provides a stable pre-embedded sleeve which can adapt to the working environment of a construction site, not only can avoid the influence on road and bridge surface passing during construction, but also can remarkably improve the binding power and pulling resistance between the sleeve and concrete, avoids the separation between the sleeve and a peripheral concrete layer, and improves the construction quality. And the safety and durability of the connecting component are ensured.

The utility model relates to the technical field of valves, and discloses an automatic water replenishing valve. The automatic water replenishing valve comprises a valve body assembly, a valve element assembly and a water replenishing driving assembly, the valve body assembly is provided with a water inlet flow channel, a water outlet flow channel and a sealing opening capable of communicating the water inlet flow channel with the water outlet flow channel, and the valve body assembly is further provided with a first mounting opening communicating with the water outlet flow channel and a second mounting opening communicating with the water inlet flow channel; the water supplementing driving assembly is installed at the first installation opening, the valve element assembly comprises a valve rod and a blocking one-way valve, the blocking one-way valve is installed at the second installation opening, one end of the valve rod is connected with the output end of the water supplementing driving assembly, and the other end of the valve rod penetrates through the sealing opening and abuts against a one-way valve element of the blocking one-way valve; the water supplementing driving assembly can drive the one-way valve element to move in the direction away from the sealing opening through the valve rod so as to communicate the water inlet runner with the water outlet runner. The automatic water replenishing valve is simple in structure, convenient to assemble and good in reliability.

The invention relates to a preparation method of a modified waste concrete recycled aggregate, which comprises the following steps: crushing waste concrete, screening the crushed waste concrete with a proper particle size to serve as a raw material of the recycled aggregate, washing with a shaking sieve to remove part of edges and corners about to fall off, and carrying out gelation reaction by using modified solutions such as nano silicon dioxide and water-soluble silicate to obtain the modified waste concrete recycled aggregate. According to the invention, fine pores on the surfaces of concrete particles are blocked and repaired, so that the structure is complete and compact, the mechanical strength of the aggregate is enhanced, the porosity and the water absorption rate are reduced, and the water absorption and the mechanical strength are further reduced through phenolic resin coating. The modified waste concrete recycled aggregate is mixed with cement, zeolite powder and the like, the mixture is pressed into a blank, and the artificial stone with excellent mechanical properties and low water absorption is obtained after carbonization curing. The method provided by the invention has good application prospects and environmental protection significance.

The invention relates to the technical field of injection molding molds, in particular to a porous mold for ceramic slip casting, which comprises a porous ceramic slip casting mold for ceramic slip casting and a support frame for supporting the porous ceramic slip casting mold, the porous ceramic slip casting mold is composed of an upper mold and a lower mold which are distributed up and down, a mold plate is arranged above the upper mold, and a mold cover for sealing is fixedly connected between the mold plate and the upper mold; a transmission structure for lifting the upper die is installed on the supporting frame, the transmission structure is composed of a driving motor, a lead screw and a transmission part, the lead screw is rotatably installed on the supporting frame and penetrates through the interior of the die plate in a threaded mode, the transmission part is installed between the driving motor and the lead screw, and functional mechanisms are arranged on the side wall of the lower die and the supporting frame. The functional mechanism comprises an air exhaust structure and a material ejection structure. Air in the mold can be exhausted, defects such as bubbles and air holes are avoided, and the appearance quality and performance of products are improved.

The invention provides an acid-resistant nano polymer microsphere inclusion plugging system as well as a preparation method and application thereof. The plugging system is prepared from the following raw materials in parts by mass: 1-5 parts of acid-resistant nano polymer microspheres, 1-5 parts of an acid-resistant low-molecular-weight cyclodextrin polymer and 80-120 parts of water. According to the invention, a supramolecular construction thought is introduced, and an inclusion synergistic plugging system constructed by acid-resistant nano polymer microspheres and a cyclodextrin polymer through a host-guest inclusion effect is provided through design of a nano polymer microsphere surface molecular structure and a cyclodextrin polymer molecular structure. The plugging system disclosed by the invention is high in acid resistance and excellent in shear resistance, and the nano polymer microspheres have good dispersity and injectability and are easy to inject into a stratum to move to the deep part; and meanwhile, the plugging agent has the characteristics of low concentration and high efficiency, and can effectively enter the deep part of a stratum and efficiently plug cracks, so that the swept volume and the displacement efficiency of CO2 can be improved.

The invention provides an intracavity implant, a suturing method and a blood vessel plug system. The intracavitary implant comprises a supporting framework, the supporting framework is of a tubular structure with an inner cavity, and the supporting framework is of a latticed structure which is formed by weaving a plurality of strands of weaving wires in a staggered mode and provided with a plurality of meshes. The inner membrane is fixed in the inner cavity of the supporting framework, the inner membrane is of a tubular structure with an inner cavity, and at least one hole is formed in the inner membrane. By means of at least one intracavity implant, plugging and treatment of a cavity can be achieved, and the intracavity implant can adapt to the form of a false cavity; the intracavitary implant provided by the invention can be expanded and formed at one time, and compared with a spring coil embolism technology, the artificial cavity can be blocked by using less materials, so that the cost is relatively low; and in addition, the forming mode is low in requirement for an operator, operation is more convenient and faster, and efficiency is higher.

The invention belongs to the technical field of oilfield exploitation, and relates to an emulsion polymer, an emulsion gelling system and a preparation method and application thereof, in particular to a novel high-temperature-resistant and high-salt-resistant emulsion polymer, an emulsion gelling system and a preparation method and application thereof. The preparation method of the emulsion polymer comprises the following steps: (1) dissolving an emulsifier in solvent oil, and uniformly stirring to obtain an oil phase; (2) completely dissolving a monomer in water to obtain a water phase, and then adjusting the pH value of the water phase with alkali; (3) dropwise adding the oil phase into the water phase to form an oil-in-water emulsion, and stirring after emulsification is finished; and (4) introducing nitrogen to remove oxygen, adding an initiator to initiate a polymerization reaction, then preserving heat, and obtaining an emulsion polymer after the reaction is finished. The emulsion polymer disclosed by the invention is low in initial viscosity and high in temperature resistance and salt resistance, and has the capability of realizing reservoir plugging and profile adjustment in high-temperature and high-salt oil reservoir profile control measures.

The invention relates to the technical field of suspended ceiling structures, and provides a light steel keel gypsum plaster board suspended ceiling structure aiming at the situation that traditional gypsum plaster boards are inconvenient to install. The light steel keel gypsum plaster board suspended ceiling structure comprises a keel frame and a plurality of gypsum plaster boards laid on the bottom side of the keel frame; the keel frame comprises a plurality of auxiliary keels which are arranged in parallel; a plurality of connecting rods are vertically and rotationally connected to the two sides of the gypsum plaster board, clamping plates are vertically arranged at the top ends of the connecting rods, and the clamping plates of the connecting rods on the two sides of the gypsum plaster board are in lap joint with the tops of the two auxiliary keels correspondingly; the gypsum plaster boards are fixed to the two adjacent auxiliary keels through self-tapping screws. The gypsum plaster board has the effect of facilitating installation and fixation of the gypsum plaster board.

The utility model belongs to the technical field of oil well protection devices, and discloses an oil well polish rod breakage blowout preventer. The sleeve is mainly technically characterized by comprising a sleeve body which is provided with an upper sleeve and a lower sleeve oppositely, a polish rod channel is formed among the upper sleeve, the lower sleeve and the sleeve body, a front end cover is arranged in front of the sleeve body, a rear end cover is arranged behind the sleeve body, and a horizontal moving block is arranged in the sleeve body. A blocking groove is formed in the upper portion of the horizontal moving block, a vertical jacking spring is arranged in the blocking groove, a blocking plug is arranged at the upper end of the vertical jacking spring, a transverse jacking spring is arranged between the rear end cover and the horizontal moving block, a pulley groove is formed in front of the horizontal moving block, and a pulley is arranged in the pulley groove. When the polish rod moves up and down, the pulley rotates, the friction force between the polish rod and the pulley is reduced, the service life of the blowout preventer for the broken and disengaged polish rod of the oil well is prolonged, only the pulley needs to be replaced after the pulley is abraded, and the material cost is reduced.

The utility model discloses a dresser structure capable of being curled and stored, which belongs to the technical field of dressers, and comprises a dresser main body, a mounting rack is arranged in an inner cavity of the dresser main body, a storage rack is fixedly connected to the inner end of the dresser main body, a plurality of storage grooves are formed in one end of the storage rack, and the dresser main body is fixedly connected with the mounting rack. According to the technical scheme, dustproof cloth is arranged on the inner sides of the strip-shaped door plates, rubber strips are arranged on the outer sides of the storage racks provided with the storage grooves, the storage racks are arranged on the inner sides of the storage racks, and the storage racks are arranged on the inner walls of the storage racks. The storage groove is shielded through the strip-shaped door plates, meanwhile, the dustproof cloth can abut against the rubber strips, sealing of the internal space of the storage groove and blocking of gaps between the adjacent strip-shaped door plates are achieved, and therefore dust prevention and moisture prevention of the interior of the storage groove are achieved, and the good state of cosmetics in the storage groove is guaranteed.

The utility model discloses an air-tight seal stirring device, which comprises a shell, a stirring rod, a floating guide disc, an air inlet valve and a discharge valve, a discharge pipe is vertically arranged at the bottom of the shell, the stirring rod is rotatably arranged in the shell, the bottom of the stirring rod vertically extends into the discharge pipe, and the floating guide disc is arranged on the bottom of the shell. The floating guide disc is arranged in the discharging pipe and arranged on the stirring rod in a sleeving mode, a guide hole corresponding to the stirring rod is formed in the middle of the floating guide disc, the air inlet valve is arranged on one side of the discharging pipe, a plugging plate is arranged at the bottom of the discharging pipe, and the discharging valve is arranged at the bottom of the plugging plate. A blind hole is formed in the bottom of the stirring rod in an inwards-concave mode, and a discharging hole vertically communicated with the blind hole is formed in the outer circle of the stirring rod. According to the air-tight stirring device disclosed by the utility model, the problem that raw materials enter the discharge pipe in the stirring process is avoided, the raw materials can be ensured to be fully stirred, and the problem of leakage of the raw materials can also be avoided.

The utility model provides a silicon dioxide powder bagging mechanism which comprises a conveying cylinder used for being installed at the bottom of a silicon dioxide powder storage bin, a screw rod used for pushing silicon dioxide powder to move is rotatably installed in the conveying cylinder, and one end of the screw rod is fixedly connected with the output end of a motor. The end, close to the motor, of the conveying cylinder is fixedly connected with an end cover, the motor is fixedly connected with the end cover, the end, away from the end cover, of the conveying cylinder is provided with a vertically-arranged discharging pipe used for being inserted into a woven bag, and the discharging pipe is sleeved with an expansion air bag ring which is fixedly connected with the discharging pipe and used for supporting a bag opening of the woven bag. The silicon dioxide powder sealing device has the advantages that the bag opening of a woven bag storing silicon dioxide powder is sealed, and the silicon dioxide powder is prevented from diffusing at will.

The utility model discloses a window structure of a water storage basin. The window structure of the water storage basin comprises a water storage basin body and a water level window, a water level window groove is formed in the side wall of the water storage basin body; the water level window comprises a window part and a waterproof part, the window part is fixed to the inner side wall of the water storage basin and covers the water level window groove, the window part comprises a window part right facing the water level window groove and a connecting part extending to the inner side wall of the water storage basin, and the waterproof part is fixed between the inner side wall of the water storage basin body and the connecting part; and when the window piece is fixed on the water storage basin body, the window piece partially moves from inside to outside and is clamped with the water level window groove. According to the window structure of the water storage basin, the window piece covers the water level window groove to block the water storage basin body, meanwhile, the window piece is fixed to the inner side wall of the water storage basin, water pressure of water contained in the water storage basin body acts on the window piece, the fixing effect of the window piece is improved, the window piece and the water storage basin body are attached more tightly, and the water storage basin body can be prevented from being damaged. The effect of preventing water seepage is achieved.

The utility model relates to the technical field of nozzle firing pin bodies, in particular to a durable nozzle firing pin structure which comprises a connector, the inner wall of the connector is in threaded connection with a nozzle head, the top end of the nozzle head is fixedly connected with a firing pin body, and the inner wall of the connector is in sliding connection with a filter cartridge. The discharging mechanism is used for discharging retained water in the nozzle head, and the discharging mechanism is arranged on the surface of the nozzle head; the discharging mechanism comprises a fixing ring fixedly connected to the inner wall of the connector, and the inner wall of the fixing ring is slidably connected with a sealing plug. According to the device, backflow of water in the nozzle head is stopped by utilizing the first spring, the fixing ring and the sealing plug, and guide discharge of retained water above the sealing plug is realized by utilizing the drainage pipe, so that the water is prevented from being retained in the nozzle head, the risk of icing in the nozzle firing pin structure is reduced, and the service life of the nozzle firing pin structure is prolonged.

The invention discloses a vehicle-mounted coring machine, which relates to the technical field of coring machines, comprising a transport vehicle and a drill barrel fixedly arranged on the transport vehicle; a plurality of water outlets are arranged in a circumferential array at the bottom of the drill barrel, each water outlet is communicated with a water delivery channel arranged on the barrel wall of the drill barrel, a sealing disk is slidably arranged in the drill barrel, and the sealing disk is connected to an elastic module arranged in the drill barrel; wherein the sealing disk and the barrel wall of the drill barrel are enclosed to form a water delivery cavity, the water delivery cavity is connected to a water delivery module for delivering water into the cavity, and the water delivery channel is communicated with the water delivery cavity through a water inlet hole; a plurality of through holes are also arranged on the barrel wall of the drill barrel, a plug is rotatably arranged in the through hole, a water delivery hole is arranged on the plug, and the plug is connected to an adjusting module for driving the plug to rotate; the invention does not need to take out the core sample by knocking or disassembling, can effectively protect the coring machine and the core sample, and thus improve the accuracy of subsequent detection of the core sample.

The utility model provides a one-way valve with a protection installation structure, which relates to the technical field of one-way valve design, and comprises a one-way valve shell and a connecting shell, the connecting shell is connected with a protection assembly, the protection assembly comprises a leakage net, the leakage net is fixedly connected with a connecting column, the connecting column is fixedly connected with a sliding ring, and the sliding ring is fixedly connected with a connecting plate. A rotating part is fixedly connected to the end, away from the sliding ring, of the connecting plate, a rotating shaft is rotationally connected to the rotating part, and the rotating shaft is rotationally connected to the connecting shell. When the end, away from the first barrier plate, of the rotating piece moves, the end, close to the first barrier plate, of the rotating piece is driven to rotate inwards, the fixing ring is blocked, airflow is blocked in time at the moment, and the situation that airflow or water flow continues to flow in the one-way valve, and consequently components in the one-way valve are damaged can be avoided.

The utility model relates to the technical field of electronic atomization, and discloses a liquid storage device and electronic atomization equipment, and the liquid storage device comprises a first shell, a first sealing part and a first valve part. The first shell is provided with a first containing cavity, an atomization air channel and a suction nozzle, one end of the atomization air channel is communicated with the suction nozzle, and the other end of the atomization air channel extends into the first containing cavity. The first sealing assembly is arranged in the first containing cavity, and a liquid storage space is defined by the first sealing assembly and the first containing cavity. A first through hole is formed in the first sealing assembly. The first valve piece is movably arranged at the end, stretching into the first containing cavity, of the atomization air channel so that the first valve piece can move in the axial direction of the atomization air channel under the action of external force to be inserted into the first through hole or be away from the first through hole to block or open the first through hole. The liquid storage device and the heating assembly are detachably installed, the liquid storage device has good sealing performance, and leakage of the atomization matrix can be prevented.

The invention relates to a water injection well profile control method based on protection of a low permeability layer and application of the water injection well profile control method. The water injection well profile control method comprises the steps that in the first slug, a medium-low permeability layer is temporarily plugged through a temporary plugging agent; in the second slug, a gel profile control agent is used for blocking the high-permeability layer; according to the third slug, the system injected into the high-permeability layer in the early stage is moved to the deep portion of the oil reservoir through the displacement slug, and deep profile control is achieved; and in the fourth slug, a blocking remover is used for conducting blocking removal on the low-permeability layer. The method has the characteristics of simple synthesis process, no by-product, high viscosity and shear resistance, and also has excellent flowability and injectability; after the profile control system prepared by the profile control method simulates shearing of a pump, a pipeline and a stratum, the viscosity retention rate of the profile control system can still reach 92% or above, and the breakthrough pressure reaches 8-11 MPa. Therefore, the effects of high-permeability plugging and medium-low-permeability oil displacement are achieved.

A breach dam blocking device comprises a water blocking tank, the water blocking tank comprises a front blocking face and a rear blocking face, a buffering shell is arranged between the front blocking face and the rear blocking face, and a blocking net is arranged on the front blocking face; a water passing window is formed in the rear blocking face, a water blocking baffle is arranged in the buffer shell corresponding to the position of the water passing window, and the overturning unit acts to drive the water blocking baffle to overturn to block the water passing window; an anti-falling supporting rod piece is further arranged between the front blocking face and the rear blocking face in a penetrating mode. The dike breach blocking device solves various inconvenience of dike breach blocking construction in the prior art, provides a new idea for blocking a breach dike, and compared with a blocking mode in the prior art, the dike breach blocking device has the advantages of being simple in structure, low in blocking input cost, high in applicability, safer in construction and better in blocking effect. And more economic losses can be retrieved in emergency construction, the breach risk is reduced, and the safety popularization value is higher.

The utility model discloses a quick switching connecting device for steel pipe pile grouting construction, include: mounting panel, present arc shape buckling in the outer wall of steel pipe pile, grouting pipe, horizontal setting in the one end of mounting panel, and be used for connecting the grouting mouth of steel pipe pile lower extreme, pump pipe joint, fix on concrete pump pipe, and be used for connecting grouting pipe, screw, set up in the one end of mounting panel away from grouting pipe, and present up and down distribution, and be used for fixing on steel pipe pile, and the horizontal setting of mounting panel has the strip -shaped hole that supplies screw to wear, locking piece, fix on steel pipe pile, and be used for fixed mounting panel, the utility model has the following advantages and effect: through setting up the mounting panel of sliding installation on steel pipe pile, and setting up grouting pipe on mounting panel, make the grouting pipe of slippage of mounting panel connect grouting mouth on steel pipe pile, also can realize the plugging of grouting mouth, make construction process more convenient, improve construction efficiency, be favorable to the rapid construction of batch steel pipe pile.

The utility model discloses a laser cladding nozzle which comprises an upper conical cylinder body and a conical powder nozzle body, the conical powder nozzle body is connected with the upper conical cylinder body through threads, the outer wall of the upper conical cylinder body is sleeved with a locking ring, and an assembly seat is fixed on the side wall of the conical powder nozzle body; by means of the locking ring, the assembling base, the locking block, the guide rod and the spring, the locking block is fixed in the assembling base in a sliding mode, during assembling, the inclined face of the end of the locking block and the locking ring make contact with each other and extrude and push the locking block to move to one side for avoiding, and after the locking block is screwed to a proper position, the locking block is fixed to the assembling base in a sliding mode. The spring in the compressed state releases the elastic force to push the locking block to slide in the assembly seat, so that the locking groove of the locking block is clamped on the locking ring, the assembly, locking and limiting are realized, and the self-rotation and loosening are avoided.

The present application discloses a use of a self-assembled hydrogel in plugging allergic dentinal tubules, belonging to the technical field of dental biomaterials. The present application provides a use of a self-assembled hydrogel for preparing an allergic dentinal tubule plugging agent, wherein the self-assembled hydrogel is formed by contacting a 1‑30% w / w macromolecular solution with a 1‑30% w / w polyphenol solution; the present application also provides a desensitization therapeutic agent for dentin hypersensitivity containing the self-assembled hydrogel. After the self-assembled hydrogel provided in the present application is used to prepare an allergic dentinal tubule plugging agent, the macromolecular solution and the polyphenol solution can respectively penetrate into the deep layer of the allergic dentinal tubules and self-assemble inside the dentinal tubules to form a dense cross-linked macromolecular hydrogel, thereby effectively avoiding the problem that the cross-linked macromolecular gel solution is difficult to penetrate into the deep layer of the allergic dentinal tubules, and achieving deep plugging of the allergic dentinal tubules.