57results about How to "Achieve blocking effect" patented technology

The invention relates to a high-temperature-resistant and high-salinity-resistant water-plugging profile control agent, and a preparation method and application thereof. The water-plugging profile control agent comprises polyacrylamide, a composite crosslinking agent, cyclodextrin, metaphenylene diamine and deoxidant, wherein the composite crosslinking agent consists of aldehyde, phenol and aluminum citrate; the aldehyde is one or the combination of benzaldehyde and paraformaldehyde; and the phenol is one or more of phenol, resorcinol and hydroquinone. The water-plugging profile control agent can resist the temperature of 120 DEG C, can be directly prepared by using water with mineralization degree of 150,000 mg / L, and has high crosslinking performance and long-term stability. The preparation method for the water-plugging profile control agent is simple, convenient to operate, and easy to control, and water-plugging profile control agent has a good plugging effect, and construction can be performed after the water-plugging profile control agent is directly prepared on site.

The invention discloses a life-cycle treatment method of water inrush in a tunnel. The method comprises the steps that three-dimensional morphologic features of a water conductive structure of a water inrush zone in the tunnel are obtained by combining geological data, excavation data, detection results of comprehensive geophysical detection and numerical calculation results; grouting sealing water inrush is taken into account, surrounding rock physical mechanical parameters are improved simultaneously, design of a treatment scheme is conducted on the water inrush zone in the tunnel, and design of a keyhole and a drainage keyhole is conducted according to a water inrush main controlling structure; the stability of the tunnel in the construction period and the safety in the operation period are guaranteed by conducting numerical simulation on the tunnel section which is reinforced according to the design scheme; grouting construction is conducted according to the design scheme, a monitoring device is buried during the construction process, and feedback optimal design is implemented; inspection is conducted on the treatment effect of the grouting reinforcement section in the tunnel, and the excavation time is determined. According to the life-cycle treatment method of the water inrush in the tunnel, it is guaranteed that the surrounding rock in the tunnel construction period is stale and water inrush of the tunnel does not occur in the operation period, the chronic problem that nine of the ten tunnels leak is completely eradicated, and the effective treatment of the water inrush in the tunnel and the environmental protection are achieved.

The invention discloses an LED epitaxial growth method. The LED epitaxial growth method comprises the following steps in sequence: processing a substrate, growing a low-temperature GaN nucleating layer, growing a high-temperature GaN buffer layer, growing a non-doped u-GaN layer, growing an Si-doped n-GaN layer, growing a luminous layer, growing an i-AlGaN layer and p-InGaN layer alternated growth structure, growing a high-temperature p-type GaN layer, growing a p-type GaN contact layer and cooling. Through the scheme, a traditional LED epitaxial electron blocking layer is designed into a low-voltage high-temperature i-AlGaN layer and high-voltage low-temperature p-InGaN layer alternated layer growth structure, an electron blocking effect is reached, and the increase of hole injection level is also facilitated, so that the luminous efficiency of an LED is improved.

The invention discloses a pole-shaped device of magnetron sputtering, comprising a target barrel, an arc shelter cap and a magnetic pole device; the arc shelter cap is arranged at the side face of the target barrel; the magnetic pole device consists of a plate type field yoke, a side magnet steel and a central magnet steel which are fixed parallel on the plate type field yoke and parallel with the plane and a central separating strip is positioned between the side magnet steel and the central magnet steel; the plate type filed yoke is fixed parallel at the other side face of target barrel opposite to the arc shelter cap. Furthermore, strengthening magnet steels are mounted at the upper and the lower end faces of the central magnet steel, the height of the end face of strengthening magnet steel which closes to the end face of the central magnet steel is lower than that of the end face of the central magnet steel. Due to the strengthening magnet steel, the invention overcomes the disadvantages that the arrangement of the prior magnet poles can cause the magnetic field of end face is weaker than that of central magnetic field, so as to ensure a much even level magnetic field of target face; thus, the whole mechanical erosion of the target is even and the magnetic circuit is completely closed, further increasing the utility rate of the target.

The invention relates to a high pressure-resistant leak stoppage agent and leak stoppage slurry containing the same. The high pressure-resistant leak stoppage agent consists of the following components in percentage by mass: 25.0 to 27.0 percent of soybean particles, 31.0 to 32.0 percent of walnut shell flour, 7.1 to 7.5 percent of vermiculite, 2.1 to 2.5 percent of peanut hull meal, 22.0 to 22.5percent of cement and 10.0 to 11.0 percent of flocculation coating agent LHB-105 for drilling fluid. The leak stoppage slurry consists of base slurry and the high pressure-resistant leak stoppage agent, wherein 3 to 9 grams of high pressure-resistant leak stoppage agent is added into every 100 milliliters of base slurry. The leak stoppage agent and the leak stoppage slurry stop leaking by combining chemical leak stoppage with particle bridging leak stoppage, so that the technical problems of aperture leak, crack leak and fracture leak under a well can be solved. The leak stoppage agent and the leak stoppage slurry are suitable for severe well leakage caused by a pore formation, a crack formation, a long-section broken formation and the like and can be applied to leak layer construction ofwhich the leak position is difficultly determined.

The invention provides a pipe opening plugging device which comprises a body, a blocking ring, a plugging rubber ring and a piston, wherein the body is in a cylindrical structure having the hollowing inside and one opened end; a penetrating hole is formed in the end part, opposite to the opened end, of the body; the piston, the plugging rubber ring and the blocking ring are arranged in the body in a sleeving manner in sequence; the piston comprises a piston head and a piston rod; the piston rod extends out of the penetrating hole; the piston head is positioned in the hollow cavity of the body; a clamping ring for limiting the blocking ring, the plugging rubber ring and the piston head in the hollow cavity of the body is fixedly clamped outside the blocking ring. The pipe opening plugging device is wide in application range, namely the pipe piece opening can extend into the hollow cavity; the tolerances of the end surfaces of the pipe piece opening are inconsistent; the plugging effect can not be influenced by uniformity, lacking or redundance, compacting in a transportation process or installation process, and the like; the service life is long, so that parts, such as the plugging rubber ring, are not required to be replaced frequently; the plugging effect is good, and the plugging rubber ring and the outer wall of the pipe piece opening are in flexible fastening, so that a sealing performance is good.

The invention relates to a high pressure-resistant leak stoppage agent and leak stoppage slurry containing the same. The high pressure-resistant leak stoppage agent consists of the following components in percentage by mass: 25.0 to 27.0 percent of soybean particles, 31.0 to 32.0 percent of walnut shell flour, 7.1 to 7.5 percent of vermiculite, 2.1 to 2.5 percent of peanut hull meal, 22.0 to 22.5 percent of cement and 10.0 to 11.0 percent of flocculation coating agent LHB-105 for drilling fluid. The leak stoppage slurry consists of base slurry and the high pressure-resistant leak stoppage agent, wherein 3 to 9 grams of high pressure-resistant leak stoppage agent is added into every 100 milliliters of base slurry. The leak stoppage agent and the leak stoppage slurry stop leaking by combining chemical leak stoppage with particle bridging leak stoppage, so that the technical problems of aperture leak, crack leak and fracture leak under a well can be solved. The leak stoppage agent and the leak stoppage slurry are suitable for severe well leakage caused by a pore formation, a crack formation, a long-section broken formation and the like and can be applied to leak layer construction of which the leak position is difficultly determined.

The invention discloses a writing tool. The writing tool includes pen tube, a sealing assembly and an output ink tube. The sealing assembly is arranged in the pen tube and one end of the sealing assembly is connected to a pen head. The ink pipe is arranged in the pen pipe and comprises a communication pipe and a plurality of through holes. The communication pipe is connected to the sealing assembly. The communication pipe comprises a main body, a channel formed inside the main body and an ink outlet end toward the pen; an ink outlet surface is formed on the ink outlet end of the communicationpipe; the support surface is in contact with the sealing assembly; each through hole is formed on the ink outlet end of the communication pipe and is arranged between the support surface and the ink outlet surface and is communicating channels inside the communication pipe. The writing tool can provide a smooth ink outlet effect, can adjust an ink outlet effect by cooperating with a sealing assembly, can reduce a volume of the writing tool and makes the user grip well.

The invention discloses an auxiliary device for steel pipe machining, and relates to the technical field of auxiliary devices for steel pipe machining. The auxiliary device comprises a clamping tool and a conveying plate which are arranged side by side, the conveying plate inclines downwards in the direction close to the clamping tool, side protection plates are arranged on the two sides of the conveying plate, a through hole is formed in the lower end of the conveying plate in a penetrating mode, a first limiting rod capable of moving in a lifting mode is arranged in the through hole in a penetrating mode, a sliding groove is further formed in the conveying plate in a penetrating mode, a second limiting rod capable of moving in a lifting mode is arranged in the sliding groove in a penetrating mode, a fixing box is arranged at the lower end of the second limiting rod, a power assembly used for pushing the fixing box to move in the direction of the sliding groove is arranged on the outer wall of the fixing box, and a transferring assembly is further arranged between the clamping tool and the conveying plate. The auxiliary device has the advantages that steel pipes with different pipe diameters can be conveyed and discharged, it is guaranteed that one steel pipe is discharged at a time, the steel pipe carrying time is shortened, the clamping and fixing time of adjacent steel pipes is shortened, and the working efficiency is improved.

The invention provides a parachute design biodegradable occluder. The end close to a human body is defined as a near end, and the end away from the human body is defined as a far end; the occluder ischaracterized in that the occluder includes an occluder support internally arranged with a flow-choking membrane, and a forming ring with changeable states; and the occluder support, the flow-chokingmembrane and the forming ring are made from macromolecule polymer materials having biodegradable properties in biological tissue. The occluder is made from the biodegradable polymer materials, so thatthe occluder can be decomposed or absorbed by human tissue after a period of time in the human tissue, defect parts can be finally formed by the self tissue of the human body, therefore, occlusion without foreign matters can be realized, and the benefits are particularly obvious for children.

The invention discloses water bath turbulence mixed jet flow flue gas purification equipment. The water bath turbulence mixed jet flow flue gas purification equipment comprises a fixed base, wherein apurification tower is fixedly connected to the fixed base, an exhaust port is formed in the upper end face of the purification tower, a flow dividing mechanism used for filtering and dividing a practice flue gas solution is arranged in the purification tower, a liquid level floating indication box is fixedly connected to the upper end face of the fixed base, and a liquid injection port is fixedlyconnected to the liquid level floating indication box. The water bath turbulence mixed jet flow flue gas purification equipment is reasonable in structure, through the arrangement of the flow dividing mechanism, sufficient contact of washing water bath mist in the mist washing process is achieved; the high efficiency of demisting is realized; the effect of remarkably improving the removal rate ofPM2.5, PM10 and micro fine particles in the mist is achieved; by arranging a flushing spray head mechanism, in the flushing process of the water bath turbulence mixed jet flow flue gas purification equipment, flushing water flow in the purification tower is rotary spraying water flow, the mist in the water bath turbulence mixed jet flow flue gas purification equipment is blocked, the mist which is completely treated is prevented from being discharged through a discharge pipe, and the mist removing efficiency is improved.

The invention discloses a delayed expansion type composite drilling sealing material, which comprises a microcapsule expanding agent, high-dispersity cement and a polymer mixture. Specifically, the microcapsule expanding agent comprises the following substances by mass: 2% of sodium alginate, 2% of gelatin, 4% of an expanding agent and 92% of water; the high-dispersity cement comprises the following substances by mass: 66% of Portland cement, 33% of water and 1% of a dispersing agent; and the polymer mixture comprises the following substances by mass: 49% of resin, 49% of a curing agent, and 2% of a coupling agent. The microcapsule expanding agent, the high-dispersity cement and the polymer mixture are mixed in a mass ratio of 0.02:1:0.06 to obtain the delayed expansion type composite drilling sealing material. The delayed expansion type composite drilling sealing material provided by the invention can permeate into fissures around hole walls under a grouting pressure, the polymer mixture improves the compactness, impermeability and mechanical strength of the sealing material, the microcapsule expanding agent delays the onset time of the expanding agent, and lowers the influence ofthe expanding agent on the compactness of the material, thus realizing expansion-strength coordinated development.

The invention discloses a discharge device used for quality detection of mechanical parts. The discharge device comprises a mounting base station and a supporting base frame, wherein the supporting base frame is arranged on the mounting base station; a transport mechanism is arranged on the mounting base station; a blocking mechanism is arranged on the transport mechanism; a discharge drive mechanism is arranged on the supporting base frame; the discharge device mechanism is connected with a folding mechanism; the folding mechanism is fixedly connected with an L-type pushing rod; a supporting platform is arranged on the supporting base frame; a spring base is arranged on the supporting platform; a connecting platform is arranged on the spring base; an avoiding mechanism is arranged on the connecting platform; a baffle plate is arranged on the connecting platform; the baffle plate and the avoiding mechanism are respectively positioned at the two sides of the transport mechanism; and the L-type pushing rod and the avoiding mechanism are positioned at the same side. The discharge device can be used for quickly completing discharge work of unqualified mechanical parts, is automatic and efficient, and reduces the proportion of unqualified products in the finished products of the mechanical parts, so that the assembly quality of the mechanical parts is improved, the production efficiency of the mechanical parts is improved, and the cost is reduced.

The invention belongs to the technical field of sprinkling irrigation devices, particularly relates to a sprinkling irrigation robot, and provides the following scheme to solve the problems that in the prior art, electricity utilization is troublesome, and most sprinkling irrigation robots are single in sprinkling irrigation mode, so that use is limited, rainwater cannot be automatically collected, and the resource utilization rate is low, the sprinkling irrigation robot comprises a bottom plate, walking wheels are arranged at four corners at the bottom of the bottom plate, and a water storage tank is fixedly connected to one side of the top of the bottom plate. According to the sprinkling irrigation robot, electric energy can be generated and a motor can be started when water flow flows through a hydroelectric generator, then the effect of rotary sprinkling irrigation of a spray head can be achieved, the direction of the water flow can be changed by rotating a handle, then the motor can stop working, and the effect of directional sprinkling irrigation of the spray head can be realized; and meanwhile, the overall weight is changed through collection and leakage of rainwater by a movable ring, and automatic opening and closing of a water injection pipe can be achieved, so that the automatic rainwater collection effect is achieved, and the practicability and the full resource utilization are improved.

The invention discloses a waterproof thermal insulation outer wall of a civil building and a construction method of the waterproof thermal insulation outer wall, and relates to the technical field of building outer wall design. The waterproof thermal insulation outer wall comprises a wall body, a plurality of thermal insulation plates arranged on the wall body and a plurality of mounting frames arranged on the sides, away from the wall body, of the thermal insulation plates, a connecting position between every two vertically adjacent thermal insulation plates is covered by the mounting frames; mounting pieces used for connecting the adjacent mounting frames are arranged between every two vertically adjacent mounting frames, hoisting assemblies used for connecting the adjacent mounting frames are arranged on each row of thermal insulation plates, each hoisting assembly comprises connecting ropes and a plurality of connecting pieces arranged at intervals in the length direction of a connecting rope, and the connecting pieces are connected with the connecting ropes and the corresponding mounting frames; the upper end of the connecting rope is fixedly connected with the upper end of the wall body, a fixing frame is arranged on the side, away from the wall body, of the thermal insulation plate close to the ground, and a fixing piece used for fixing the fixing frame is arranged between the fixing frame and the wall body. The waterproof thermal insulation outer wall of the civil building and the construction method of the waterproof thermal insulation outer wall has the effect of improving the connection strength between the thermal insulation plate and the wall body.

The invention discloses a life-cycle treatment method of water inrush in a tunnel. The method comprises the steps that three-dimensional morphologic features of a water conductive structure of a water inrush zone in the tunnel are obtained by combining geological data, excavation data, detection results of comprehensive geophysical detection and numerical calculation results; grouting sealing water inrush is taken into account, surrounding rock physical mechanical parameters are improved simultaneously, design of a treatment scheme is conducted on the water inrush zone in the tunnel, and design of a keyhole and a drainage keyhole is conducted according to a water inrush main controlling structure; the stability of the tunnel in the construction period and the safety in the operation period are guaranteed by conducting numerical simulation on the tunnel section which is reinforced according to the design scheme; grouting construction is conducted according to the design scheme, a monitoring device is buried during the construction process, and feedback optimal design is implemented; inspection is conducted on the treatment effect of the grouting reinforcement section in the tunnel, and the excavation time is determined. According to the life-cycle treatment method of the water inrush in the tunnel, it is guaranteed that the surrounding rock in the tunnel construction period is stale and water inrush of the tunnel does not occur in the operation period, the chronic problem that nine of the ten tunnels leak is completely eradicated, and the effective treatment of the water inrush in the tunnel and the environmental protection are achieved.

The invention relates to the technical field of agricultural machines and discloses an agricultural water-saving type wheat washing device. The agricultural water-saving type wheat washing device comprises a tank; a sifter is arranged inside the tank; connection blocks are fixedly connected with the two sides of the top of the sifter; an L-shaped rod is fixedly connected with the interior of the tank; the outer surface of the L-shaped rod is movably sleeved and connected with two connection rings; the two connection rings are symmetric with respect to the axis of the tank; and the bottoms of the two connection rings are fixedly connected with small connection rods. According to the agricultural water-saving type wheat washing device, through cooperation of a transmission motor, a drive rotary plate and an idler wheel, a pull rod is moved, the pull rod drives the sifter to move in a reciprocating mode through cooperation of an extension spring by adoption of the resilience of the extension spring, then wheat is screened, dust on the surface of the wheat is reduced, namely the water amount needed in the washing process is reduced, and thus the energy saving effect is achieved.

The invention provides a pipe opening plugging device which comprises a body, a blocking ring, a plugging rubber ring and a piston, wherein the body is in a cylindrical structure having the hollowing inside and one opened end; a penetrating hole is formed in the end part, opposite to the opened end, of the body; the piston, the plugging rubber ring and the blocking ring are arranged in the body in a sleeving manner in sequence; the piston comprises a piston head and a piston rod; the piston rod extends out of the penetrating hole; the piston head is positioned in the hollow cavity of the body; a clamping ring for limiting the blocking ring, the plugging rubber ring and the piston head in the hollow cavity of the body is fixedly clamped outside the blocking ring. The pipe opening plugging device is wide in application range, namely the pipe piece opening can extend into the hollow cavity; the tolerances of the end surfaces of the pipe piece opening are inconsistent; the plugging effect can not be influenced by uniformity, lacking or redundance, compacting in a transportation process or installation process, and the like; the service life is long, so that parts, such as the plugging rubber ring, are not required to be replaced frequently; the plugging effect is good, and the plugging rubber ring and the outer wall of the pipe piece opening are in flexible fastening, so that a sealing performance is good.

The invention relates to a sample pad sealing agent as well as a preparation method and application thereof, and belongs to the field of medical detection. The invention aims to reduce the influence caused by interference factors in the detection process of immunochromatography and ensure the good stability of a sealed sample pad, and specifically, the sample pad sealing agent comprises a buffer solution, a protein protective agent, a surfactant, a preservative, a reducing agent, a coagulant and a cleaning antibody, wherein the cleaning antibody is selected from one or more of HBR (Hepatitis B Receptor)-2, Tru Block-2 and CAB (Cathode Activated Block) mab-Clon 24.

The invention discloses a solid-liquid composite road deceleration strip, and relates to the technical field of road deceleration strips. The deceleration strip comprises a deceleration strip main body which is made of a flexible material; the deceleration strip main body comprises deceleration strip base sections which are sequentially spliced and matched from left to right; a cavity is formed in each deceleration strip base section; a magnetorheological damping device is arranged in the cavity; the magneto-rheological damping device comprises an electromagnetic coil fixed at the top end in the cavity; a piezoelectric ceramic module for supplying power to the electromagnetic coil is fixed at the bottom end in the cavity; and the cavity is correspondingly filled with magnetorheological fluid. The deceleration strip has the beneficial effects that: when the vehicle speed is low, the bumping degree of the vehicle can be effectively reduced, and the discomfort of a driver can be relieved.

The invention discloses an LED epitaxial growth method. The LED epitaxial growth method comprises the following steps in sequence: processing a substrate, growing a low-temperature GaN nucleating layer, growing a high-temperature GaN buffer layer, growing a non-doped u-GaN layer, growing an Si-doped n-GaN layer, growing a luminous layer, growing an i-AlGaN layer and p-InGaN layer alternated growth structure, growing a high-temperature p-type GaN layer, growing a p-type GaN contact layer and cooling. Through the scheme, a traditional LED epitaxial electron blocking layer is designed into a low-voltage high-temperature i-AlGaN layer and high-voltage low-temperature p-InGaN layer alternated layer growth structure, an electron blocking effect is reached, and the increase of hole injection level is also facilitated, so that the luminous efficiency of an LED is improved.

The invention discloses a directional heat transfer pavement applied to ice and snow melting of an airport and a control method thereof, the directional heat transfer pavement comprises a structure and a control method, and the structure comprises a macadam base layer, a common asphalt concrete lower surface layer, a heat insulation layer, a heating cable and a heat conduction concrete upper surface layer from bottom to top. The heat insulation layer is used for preventing heat from being transferred downwards and ensuring that the heat is gathered on the upper surface layer; the heat-conducting concrete upper surface layer is formed by mixing iron particles or other heat-conducting media into asphalt concrete according to a certain proportion and the heat-conducting performance of the heat-conducting concrete upper surface layer. According to the structure, the heat transfer theory is utilized, when the upper surface temperature reaches the ice and snow melting requirement, the voltage smaller than the rated power is controlled, and the heating cable is continuously heated. According to the directional heat conduction structure provided by the invention, the problems of heat dissipation and low heat transfer efficiency of a traditional electric heating road surface are solved, and the continuous heating control method of the directional heat conduction structure solves the problems of short service life and invariable replacement caused by repeated electrification of a heating cable during intermittent heating.

The invention discloses an automatic calibration system of a chip mounter, relates to the technical field of chip mounters, and solves the technical problem that when the output end of a processing assembly is not aligned with a fitting assembly, the fitting position deviates. A circuit switch of a rotating motor is turned on, an output transmission shaft is driven to rotate, the output transmission shaft is in meshed connection with a sliding baffle through meshing teeth and drives the sliding baffle to move up and down, the sliding baffle can move to a conveying belt in the up-down sliding process, and when the conveying belt conveys accessories, the sliding baffle slides to the lowest end; the accessory can be blocked by rotating the suction pad, so that the blocking effect is achieved, the suction pad is aligned with the center position of the accessory, the calibration effect is achieved, the calibration effect is improved, and then the sticker is adsorbed through the processing assembly and attached to the designated position of the accessory.

The invention discloses a joint structure and a supporting method for a shear wall construction patchwork formwork, which belongs to the field of building formwork installation and includes a main formwork and a connection formwork. The main formwork includes a connection part 1, and the connection formwork includes a connection part 2 and a connection part 1 A connection plate is installed on the top, and the connection part 2 includes two sets of side-by-side limit plates, both of which are connected with the connection template; both sides of the connection part 2 and the connection part 1 are provided with mounting holes, and the two sets of mounting holes The pull bolt is installed inside, and the blocking sleeve is installed on the pull bolt, and the rubber waterstop and the fixing piece 1 are installed outside the blocking sleeve. One side of the rubber waterstop is suitable for fitting the blocking sleeve, and the fixing piece 1 It is in contact with the rubber waterstop, and the outer side of the rubber waterstop is installed with the second fixing piece, which is suitable for squeezing and fixing the first piece and the rubber waterstop; The leak resistance is not strong, and construction requires a large number of parts to lock the formwork, resulting in high cost and low construction efficiency.

The invention relates to a plugging method for a pressure-bearing dewatering well of a high-water-level basement. The plugging method comprises the following steps that a water stop steel sleeve is installed; mounting a blind plate; processing a blind plate; a grouting step; in the dismantling step, bolts between the flange plate and the blind plate are dismantled, after the blind plate is separated from the waterproof rubber ring and the abutting device, the blind plate is directly dismantled, and the waterproof rubber ring and the abutting device are left in a plug of the water stop steel sleeve; checking: checking whether water seepage occurs in the water stop steel sleeve after the blind plate is removed, if no leakage occurs, continuing the next step, and if water seepage occurs, mounting the blind plate and grouting again; and a permanent plugging plate welding step: welding a permanent plugging plate in the water stop steel sleeve. The anti-seepage effect can be improved when the dewatering well is blocked.

The invention discloses a shear wall construction abutted seam formwork connecting structure and a supporting method, and belongs to the field of building formwork mounting. The shear wall construction abutted seam formwork connecting structure comprises a main formwork and a connecting formwork, the main formwork comprises a first connecting part, the connecting formwork comprises a second connecting part, a connecting plate is mounted on the first connecting part, the second connecting part comprises two sets of parallel limiting plates, and the two sets of limiting plates are correspondingly connected with the connecting formwork; mounting holes are formed in the two sides of the second connecting part and the first connecting part, split bolts are mounted in the two sets of mounting holes, blocking sleeves are mounted on the split bolts, rubber waterstops and first fixing parts are mounted outside the blocking sleeves, one sides of the rubber waterstops are suitable for being attached to the blocking sleeves, the first fixing parts abut against the rubber waterstops, second fixing parts are mounted on the outer sides of the rubber waterstops and suitable for extruding and fixing the first fixing parts and the rubber waterstops. The problems that in the prior art, the impermeability and the leakproofness of abutted seams are not high, a large number of parts are needed for locking a formwork during construction, the cost is too high, and the construction efficiency is low are solved.

The invention aims to provide a technical scheme for solving the problem that a model boat is leaked on the premises of not influencing the power of the model boat and not influencing water around the model boat, namely a model boat water resistant system and a model boat water resistant method. The model boat water resistant system comprises a model boat body, a propeller shaft, and a first longitudinal rib plate, a second longitudinal rib plate and a horizontal rib plate which are arranged inside the model boat body. The model boat water resistant method comprises the following steps of melting paraffin in a crucible; adding powdered graphite into the crucible, and stirring a mixture consisting of the powdered graphite and the molten paraffin; starting a motor of the model boat to make the propeller shaft rotate; pouring the mixture into an area enclosed by the first longitudinal rib plate, the second longitudinal rib plate and the horizontal rib plate; after the mixture is solidified, closing the motor.