268results about How to "Effective blocking" patented technology

The invention discloses a pneumatic type air pipe automatic fireproof plugging device, which belongs to the technical field of building fireproof equipment, and comprises a bracket, a fireproof plugging plate, a plugging mechanism for driving the fireproof plugging plate, a fixed air pipe, a movable air pipe and a movable air pipe telescopic mechanism for driving the movable air pipe, the diameter of the fixed air pipe is larger than that of the air pipe, the diameter of the movable air pipe is larger than that of the fixed air pipe, the fixed air pipe is sleeved with the movable air pipe, and the diameter of a funnel structure at the front end of the movable air pipe is smaller than that of the air pipe; the movable air pipe front-end funnel structure and the movable air pipe front-end funnel structure are sequentially in butt joint in the wall face air pipe in the flowing direction of air pressure in the air pipe, the fireproof blocking plate can be inserted into a disconnection gap between the movable air pipe front-end funnel structure and the air pipe, the movable air pipe stretches out and draws back to achieve tight connection and disconnection of a gap with a certain width of the air pipe front-end funnel structure, and the fireproof blocking plate is inserted into the gap to separate a building hole from the air pipe. Building holes are effectively blocked, and the fire-retardant separation effect is achieved.

The invention discloses a plane and vertical combination-based Tesla valve tidal river network hydrodynamic reconstruction method, which comprises the following steps of: 1, designing a main seawater upstream channel in a tidal river network into a Tesla valve structural form on the form of a river plane; secondly, in the vertical direction of the river channel, a Tesla valve-like structure is adopted, and a directional flow guide structure is arranged at the position close to a riverbed, so that when the water flow flows towards the ocean, the flow line is smooth, and when the water flow traces upwards from the ocean to the river channel, the water flow resistance is increased; structures similar to Tesla valves are installed at the inflow and upstream positions between the ocean and the river channel, movable assemblies such as gates are not used, salty tide upstream is effectively inhibited, meanwhile, water connectivity is not blocked, the influence on fish migration and ecosystem connectivity is small, and the method is suitable for large-scale popularization and application. High-concentration salt-containing water at the bottom is more effectively blocked, and one-way flow of water and pollutant discharge in a riverway of a tidal river network area are promoted.

The invention provides a liquid flow test device and method for a double-component nozzle assembly, and solves the problem of flow characteristic measurement under the condition of simultaneous radial liquid feeding of inner and outer nozzles in the double-component nozzle assembly, the liquid flow test device comprises a test upper shell, a test lower shell, a cushion block and a blanking cap, the upper testing shell comprises a first liquid inlet pipe nozzle, a pressing block and an annular body; the lower testing shell comprises a middle sleeve, a liquid collecting ring plate, a second liquid inlet pipe nozzle and a base; the cushion block is of a concave structure and is provided with a blind hole and a radial communicating hole; the upper end of the blanking cap makes contact with the lower end of the cushion block to achieve the sealing effect, and the lower end blocks an inner cavity of the inner nozzle and is higher than the upper end face of the inner nozzle. The upper end of the double-component nozzle assembly is located in the annular body, and the lower end penetrates through the base. The pressing block is arranged at the upper end of the middle sleeve and fixedly connected with the base. The device is compact in structure, firm in fixation and convenient to assemble and disassemble, and can meet the test of nozzle assemblies with various radial apertures.

The invention relates to a quick plugging device and method for an in-well water burst dewatering well. The device comprises a grouting pipe (1), a bag (2), a grouting device (3) and a one-way flowing piece (4). The grouting pipe (1) comprises a grouting outer pipe (11) and a grouting inner pipe (12), the grouting outer pipe (11) is connected with the bag (2), a one-way flowing part (4) is arranged at the joint of the grouting outer pipe (11) and the bag (2), the grouting inner pipe (12) is connected with the grouting device (3), the grouting pipe (1) extends into a well pipe of a dewatering well (5), and the position of the bag (2) is higher than that of the grouting device (3). Compared with the prior art, the rapid plugging device for the dewatering well is provided when water bursts in the well and under the flowing water condition, cement grout can be prevented from being washed away by water flow when water bursts in the well and under the flowing water condition, and the dewatering well is effectively plugged.

The utility model provides a tissue holder which is mainly composed of a setting part, a first additional circuit board, a second additional circuit board and two baffles in an integrated mode, the first additional circuit board and the second additional circuit board are vertically and oppositely connected with the setting part respectively, and a space is formed between the first additional circuit board and the second additional circuit board. The first additional circuit board penetrates through an extraction hole, the baffles are connected with the front side of the first additional circuit board and the front side of the second additional circuit board respectively, the baffles extend oppositely so as to block and position extraction type tissues or roll type tissues, a channel for the tissues to pass through is formed between the baffles, the space and the external environment are communicated, and the tissues are extracted to pass through the channel. The shortest distance of the channel between the baffles is smaller than one third of the distance between the first additional circuit board and the second additional circuit board.

The invention relates to a back passivation structure capable of reducing phosphorus internal expansion. The back passivation structure comprises an N-type crystal silicon wafer, and a tunneling oxide layer, an intrinsic amorphous silicon layer, a silicon oxynitride layer and a phosphorus-doped polycrystalline silicon layer which are sequentially arranged on the back surface of the N-type crystal silicon wafer. According to the back passivation structure capable of reducing phosphorus internal expansion, in the preparation process, P atoms can be diffused towards the silicon substrate after high-temperature crystallization, the silicon oxynitride layer serves as a first barrier layer, silicon oxynitride has higher barrier efficiency on the P atoms compared with silicon oxide, most of the P atoms can be effectively blocked, and the performance of the silicon oxynitride layer is improved. The intrinsic amorphous silicon layer serves as a second barrier layer, P atoms which are not blocked by the silicon oxynitride layer can be subjected to P doping with intrinsic amorphous silicon and are converted into doped polycrystalline silicon with low P concentration, and the tunneling oxide layer serves as the last barrier layer to further block the P atoms, so that the P atoms can be effectively prevented from being internally expanded to a crystalline silicon substrate, surface recombination is reduced, and the performance of the crystalline silicon is improved. Therefore, the cell conversion efficiency is improved.

The invention discloses a water supply device and a shower head, and the device comprises a main body which is provided with a water supply flow channel; the water path control mechanism comprises a valve rod which is arranged in the water supply flow channel and can move in the water supply flow channel in the length direction of the water supply flow channel, and a change-over switch which is arranged on the main body and is matched with the valve rod; the valve rod has a first position state for blocking the water supply flow channel and a second position state for opening the water supply flow channel; the change-over switch can drive the valve rod to reciprocate in the length direction of the water supply flow channel so as to switch the first position state and the second position state.

The utility model discloses a novel aerator for sewage treatment, which belongs to the technical field of aerators and comprises a main body, an anti-fouling mechanism is arranged at the top end of the main body, one side of the bottom end of the main body is connected with a connecting cover, the anti-fouling mechanism comprises an aeration cavity, a membrane is arranged on the top surface of the aeration cavity, an anti-fouling sheet is attached to the top surface of the membrane, and the bottom end of the main body is connected with the connecting cover. And the middle end of the bottom surface of the antifouling sheet is connected with a telescopic rod. According to the aerator, the anti-fouling sheet is attached to the membrane at the top end of the aeration cavity, so that the situation that the surface of the membrane is blocked due to sedimentation of a sewage pool after long-term use can be avoided, and during use, along with pressurization and air supply of the inflation pipe, the sealing sheet can drive the linkage rod to lift up to force the anti-fouling sheet to lift up synchronously, so that the normal aeration process is realized; the conditions of opening during aeration and closing when not in use are formed, and the blades are pressed to rotate, so that bubbles generated by accumulated water stored in the cavity are scattered, and dirt accumulation and blocking of aeration micropores by internal bubbles are effectively avoided.

The invention discloses automatic heat treatment equipment for a glass substrate, and relates to the technical field of glass processing equipment.The automatic heat treatment equipment comprises a hot bending die, the hot bending die comprises a fixed die and a movable die which can be opened and closed, the fixed die comprises a die holder, and a die cavity with an arc-shaped vertical section is formed in the die holder; the air cavity is formed in the die holder, a plurality of air blowing holes communicated with the air cavity are distributed in the bottom surface of the die cavity, and a valve groove is formed in the middle of each air blowing hole in a cut-off mode; the valve plate is arranged in the valve groove and can slide along the inner wall of the valve groove in an airtight mode, and communicating holes corresponding to the blowing holes in a one-to-one mode are formed in the valve plate. Compared with an ejector rod mode, formed glass is more softly and progressively jacked, air pressure thrust is evenly distributed at the bottom of the formed glass, the formed glass is gradually separated from a mold cavity, the product quality problem caused by mold taking is reduced, and the product percent of pass is increased.

The invention provides a cement-based permeable crystallization type waterproof coating which comprises the following components in percentage by weight: 45-60% of cement polymer powder, 2.5-5% of silicic acid powder, 1-2% of a complexing agent, 2-4% of an auxiliary agent, 5-10% of carbohydrate and 20-30% of water, the cement polymer powder comprises Portland cement powder and sulphoaluminate cement powder, the silicic acid powder comprises fluorine silicon crystal acid, silica fume, talcum powder and quartz particles, the complexing agent comprises butyl acrylate or polyacrylate, the auxiliaries comprise high-toughness resin, stearic acid or aluminum stearate and polyester acid vinyl ester or polyester acid vinyl adhesive, and the carbohydrate comprises starch. According to the invention, outside water and other harmful media are prevented from invading the concrete, water-insoluble branch and tendril-shaped crystals are generated in the concrete, pores and micro-cracks in the concrete are sealed, and a rigidity and softness combined process is adopted, so that the invasion of the outside water is effectively blocked, and the effects of water blocking and water prevention are achieved.

The utility model relates to a heat dissipation device of a motor driver, and aims to solve the problems that in the working process of the existing motor driver, a large amount of heat is generated in the driver, and when the heat generated by the driver cannot be discharged out of the driver at the first time, the temperature in the driver rises continuously, so that the heat dissipation effect is poor. The utility model relates to a direct-current motor driver, in particular to a direct-current motor driver, and aims to solve the technical problems that components in the driver work abnormally due to continuously increased temperature, so that a circuit in the driver is influenced, the driver cannot work normally, and finally the operation of the direct-current motor is influenced, and the direct-current motor driver comprises a motor driver body. The semiconductor chilling plate is arranged on the radiating fin, so that airflow passing through the semiconductor chilling plate is effectively cooled, when the cooled airflow is in contact with the radiating fin, heat exchange can be better carried out, the wavy radiating fin increases the contact area with heat and improves the radiating efficiency, meanwhile, the wavy radiating fin can slow down the airflow rate, and the low-temperature airflow and the radiating fin are subjected to sufficient heat exchange.

The utility model relates to the technical field of automobile pressure release valves, and discloses a dustproof pressure release valve and an automobile, the dustproof pressure release valve comprises a pressure release valve frame, a filter part and a protective frame, a plurality of blades are arranged on the pressure release valve frame, a plurality of buckle fixing parts are arranged on the outer side face of the pressure release valve frame, the filter part is tightly attached to the back face of the pressure release valve frame, and a plurality of buckles are correspondingly arranged on the edge of the protective frame. The filter piece is pressed on the back surface of the pressure release valve frame by the protective frame, and the buckle is correspondingly clamped with the buckle fixing part; according to the pressure relief valve, the filter part and the protective frame are additionally arranged on an original pressure relief valve, the filter part is used for being tightly attached to the back face of the pressure relief valve frame, the protective frame is used for pressing the filter part to the back face of the pressure relief valve frame, the protective frame is connected with the buckle fixing part additionally arranged on the pressure relief valve frame body in a clamped mode through the buckle to form an integrated structure, and the filter part can effectively block dust; and dust is prevented from entering the vehicle.

The utility model discloses a hollow shutter with a built-in sunshade structure, which comprises a window frame, fixing plates are arranged on two sides in the window frame, a plurality of blades are rotatably connected between the two groups of fixing plates through rotating shafts, a sliding plate is slidably sleeved on the surface of a guide rod, a sunshade component is arranged in the window frame, and when the sunshade effect is adjusted under the condition that the blades are closed, the sunshade structure can be adjusted. The motor can be started to work, an output shaft of the motor rotates forwards to drive the winding drum in the storage box to rotate, so that the rotating winding drum starts to wind the sunshade cloth, one end of the unwound sunshade cloth slides on the surface of the sliding rod under the gravity action of the balancing weight, and the sliding balancing weight drives the sunshade cloth to move from the top of the window frame to the bottom of the window frame; the sunshade cloth is arranged on the back of the window frame, so that the back of the window frame is covered, sunlight penetrating through gaps of the louver is effectively blocked under the action of the sunshade cloth, the sunshade effect of the louver is enhanced, and the sunlight penetrating through the gaps of the louver is prevented from irradiating into a room.

The application discloses a kind of independent support combination hydraulic support for large mining height composite roof mining filling, including support body, and the leakage prevention assembly of being additionally installed in the one side of support body, support assembly includes support base, four support adjusting electric cylinders one are movably installed in the top of support base, and mining support assembly is movably installed in the top of four support adjusting electric cylinders one, mounting seat is fixedly installed in the top of support base, and two support rods one are movably installed in the inside of mounting seat;By setting inner and outer double-layer shielding leakage prevention assembly, shielding band is conveniently disassembled and replaced by the quick assembly structure of clamping type, is matched with adhering structure, bottom counterweight compaction structure and arc convex projection blocking structure, form omnibearing sealing protection system, can effectively block the side, bottom gap of filling material in mining filling operation process, completely solve the problem of large mining height working face filling material leakage, leakage, greatly improve filling density and filling operation quality.

The present invention relates to the field of vehicle braking technology, and in particular, to an actuator housing assembly and a parking actuator. The actuator housing assembly includes: in a first housing unit, one end of a first housing is fixedly connected to a driving housing unit. The inner cavity of the first housing is a first channel. A second wire hole and a first wire hole are relatively arranged on the first housing. In a second housing unit, the second housing is detachably connected to the first housing. The inner cavity of the second housing is a second channel. A first avoidance opening and a second avoidance opening are distributed at both ends of the second housing. In a third housing unit, the third housing is detachably connected to the second housing. The inner cavity of the third housing is a third channel. The first state includes: the first channel is perpendicular to the second channel. The first channel is parallel to the third channel. The first housing is inserted into the second housing from the first avoidance opening. The first channel is connected to the second channel through the first wire hole. In this way, the problem of how to reduce the production cost of parking actuators with different interfaces is solved.

The utility model belongs to the technical field of dust and sand prevention of pipe orifice, provide a protection structure of suction nozzle, include: first cover body, connect in the direct above of suction nozzle to cover the suction nozzle with full package type, and second cover body is connected in the direct above of first cover body to cover the first pressure relief hole that is set up on first cover body, wherein, first cover body inside passes first pressure relief hole, second pressure relief hole and outside atmosphere communication in proper order, second pressure relief hole hidden type is established in second cover body and its axis is towards ground to guide medium release while preventing dust and sand backflow into second cover body. The second cover body that is hidden type with second pressure relief hole covers first cover body, so that suction nozzle can realize normal pressure relief through first pressure relief hole, second pressure relief hole, exclude the security risk, utilize the second pressure relief hole of axis towards ground simultaneously can prevent dust and sand backflow into second cover body, improve the dust and sand prevention ability of suction nozzle.

The utility model discloses a vegetable seed packaging mechanism which comprises a packaging mechanism body, an impurity removing box is fixedly arranged at the top of the packaging mechanism body, a feeding hopper is fixedly connected to the top of the impurity removing box, a screen is slidably connected to the inner side of one side of the impurity removing box, and a fan is fixedly connected to the inner side of the other side of the impurity removing box. The other side of the impurity removal box is fixedly connected with an outer cover, the outer cover is located on one side of the draught fan, the bottom of the outer cover is slidably connected with a collecting box, and the inner side of one side of the outer cover is fixedly connected with a filter screen. According to the vegetable seed screening device, vegetable seeds are screened and prevented from falling into the packaging mechanism body at the bottom, then the screened vegetable seeds can pass through a fan, the fan can effectively suck fine impurities such as dust mixed with the vegetable seeds into an outer cover, then the fine impurities fall into a collecting box, and the impurities in the vegetable seeds are effectively cleaned and collected.

The invention provides a high-strength self-assembly gel foam oil displacement agent and a preparation method thereof, and belongs to the field of chemical oil displacement. The high-strength self-assembly gel foam oil-displacing agent is prepared from the following components: a ternary amphiphilic hydrophobic association copolymer, a zwitterionic surfactant, a nonionic surfactant, heat-resistant polybasic acid, a counter-ion compound, a chelating agent and formation water. According to the self-assembly gel foam oil-displacing agent, quadruple interaction is formed among molecules of all the components, the strength of foaming liquid is remarkably improved, generated nitrogen foam is fine, rich and good in stability, large cracks and karst caves can be blocked in a fracture-cavity type oil reservoir, the swept volume can be effectively enlarged, the crude oil recovery rate of the fracture-cavity type oil reservoir can be remarkably increased, and the oil-displacing effect is good. The foaming agent does not generate precipitates with calcium and magnesium ions, and does not separate out due to salt.

The utility model belongs to the technical field of fireproof doors, and particularly relates to a steel door which comprises a door body, a fireproof assembly and a door frame, the door body and the fireproof assembly are both arranged in the door frame, and the door body is connected with the fireproof assembly and rotationally connected with the door frame. The fireproof assembly comprises a first fireproof door, a second fireproof door and a third fireproof door, the first fireproof door, the second fireproof door and the third fireproof door are sequentially connected, and the third fireproof door is connected with the door body. Three hinges are arranged on the door main body, the three hinges are fixedly connected with the door main body and the door frame respectively, the door main body is rotatably connected with the door frame through the hinges, and the hinges are made of steel. According to the steel door, the door body, the first fireproof door body, the second fireproof door body and the third fireproof door body sequentially form the multiple fireproof lines, fire can be effectively blocked, fire spreading is prevented, and safety is improved.

The utility model relates to the technical field of transportation plate trailers, in particular to a transportation plate trailer with a protection structure, and aims to solve the problem that the conventional transportation plate trailer often lacks an effective protection structure when being used for transporting goods. The problems that in the transportation process, due to the situations of road bumping, sudden braking, turning and the like, goods are likely to shake, collide and even fall off, the goods are damaged, and economic losses are brought to enterprises are solved. Comprising a supporting plate, moving wheels and a pulling handle, the moving wheels are fixedly installed at the bottom end of the supporting plate, the pulling handle is fixedly installed on the right side of the top end of the supporting plate, and a protection mechanism is arranged on the outer side of the supporting plate; the protection mechanism further comprises a U-shaped plate, sliding blocks, a fixing frame and a locking rod, sliding grooves are symmetrically formed in the front side and the rear side of the supporting plate, locking through holes are symmetrically formed in the right side of the U-shaped plate, and the sliding blocks are symmetrically installed in the bottom area of the inner wall of the U-shaped plate.

The utility model discloses a kind of electric power cable distribution box capable of realizing cable butt joint, including box, the both sides of box are fixedly installed with several installation rings, the top of box is fixedly installed with ceiling, the bottom of ceiling inner cavity is fixedly installed with air pump, the inside of ceiling is fixedly installed with folding pipe, several air holes are arranged in the inside of folding pipe, the inside of folding pipe both ends is fixedly installed with metal mesh plug, the inside of box is fixedly installed with two groups of mounting plate, box inside is fixedly installed with clamping wire tube. By the air pump being set, the input end of air pump extracts the airflow inside box, airflow enters the cone box inside through the air hole of bottom plate at this time, and enters the air pipe inside through through-hole, after filtering sundries and dust by the metal mesh cylinder and dust filter cylinder in the air pipe inside, airflow is introduced into the box inside, airflow enters the inside of folding pipe through air hole, and is discharged to outside through folding pipe, increase the heat dissipation efficiency and protection degree, overall use effect is good.

This invention discloses a nanodecoy receptor that blocks the IL-17 signaling pathway, including IL-17RA-CMVs carrying a fusion sequence of PDGFR-TMD and IL-17RA. This invention also provides a method for preparing the aforementioned nanodecoy receptor that blocks the IL-17 signaling pathway, comprising the following steps: S1. Using genetic engineering, IL-17RA and PDGFR-TMD are fused and designed, and a lentivirus carrying the IL-17RA and PDGFR-TMD fusion sequence is coated onto mammalian cells. A cell line stably expressing the IL-17RA and PDGFR-TMD fusion sequence is established in mammalian cells through lentivirus transfection; S2. The cell line from step S1 is taken, and cell membrane vesicles are prepared by ultrasonic disruption and permeabilization extrusion until the fusion sequence of IL-17RA carrying PDGFR-TMD is displayed at high density and correctly oriented on the outer surface of the cell membrane vesicles, forming IL-17RA-CMVs. The nano-decoy receptor of the present invention can efficiently and broadly block the interaction between IL-17 and IL-17RA, avoid such systemic side effects, and achieve treatment only through local minimally invasive delivery, thus solving the side effects problem caused by existing systemic drug administration.

The present invention relates to the field of battery production, and in particular to a raw material crusher for processing lithium manganese iron phosphate. The present invention has good crushing and crushing processing effects on materials of different hardness through crushing rollers of different weights, and only opens filter holes for crushed raw material screening in one-fourth of the area of ​​the partition, and the remaining three-fourths of the area on the partition are used to support the raw material crushing process, so that the raw material crushing process and the screening process are separated in space, and the raw material is not crushed in the filter hole area with weak structural strength, which effectively avoids deformation of the filter hole area, and timely separation of powder and raw material, so as to avoid raw material powder being retained on the partition and compacted after repeated crushing by the crushing roller. A raw material crusher for processing lithium manganese iron phosphate, including a base and vertical beams, etc.; a plurality of vertical beams are fixedly connected to the base.

The utility model discloses a bottom discharging mechanism of a vertical kiln. The bottom discharging mechanism comprises a vertical kiln main body, the first electromagnet, the second electromagnet and the third electromagnet are adopted, during operation, the moving box can be correspondingly moved through repulsive force generated by operation of the first electromagnet at different positions, and then the blocking head can be inserted into the discharging opening through repulsive force generated by the third electromagnet to achieve blocking operation. In the subsequent discharging process, a movable rod at the bottom of a material blocking head can be attracted and fixed through attraction force generated by a second electromagnet, then a discharging opening is opened, in the whole operation process, operation between structures is achieved through attraction force and mutual exclusion force of multiple sets of electromagnets, heat contact transfer between all components is avoided, and the working efficiency is improved. The heat dissipation device can improve the use safety of corresponding equipment, reduces the problem of high-temperature damage of the equipment caused by heat transfer, improves the overall use effect, and has the advantages of blocking heat conduction and preventing heat loss of the equipment.

The utility model relates to the technical field of high-temperature spray guns, and discloses a high-temperature-resistant spray gun which comprises an oil storage tank, a hollow column is fixedly connected to the bottom end of the outer wall of the oil storage tank, a servo motor is fixedly connected to the top end of the inner side of the hollow column, and fan blades are fixedly connected to the output end of the servo motor. A water storage tank is fixedly connected to the upper middle portion of the outer wall of the oil storage tank, heat dissipation blocks are fixedly connected to the periphery of the top end of the oil storage tank, a thermometer is fixedly connected to the middle of the front side of the water storage tank, a cylinder pipe communicates with the middle of the top end of the oil storage tank, and a hollow pipe communicates with the top end of the cylinder pipe. The water inlet pipe is matched with the water storage tank to add a water source, the water source is matched with the outer wall of the oil storage tank, and the temperature of the water source is checked through the thermodetector, so that the spray gun can bear pressure and thermal stress in a high-temperature environment, the temperature of the surface of the spray gun is reduced, and the service life of the spray gun is prolonged.

The invention discloses a water-swelling elastic plugging agent for a water-based drilling fluid and a preparation method of the water-swelling elastic plugging agent. The water-swelling elastic plugging agent comprises the following components in parts by weight: 100 parts of a polyolefin elastomer matrix material; 15 to 20 parts of a reinforced matrix material; 0.8 to 1.5 parts of a polyolefin elastomer matrix material cross-linking agent; 8 parts to 15 parts of a reinforcing agent A; 20 to 30 parts of a reinforcing agent B; 15 to 30 parts of super absorbent resin; 15 to 20 parts of a plasticizer; 0.2 to 0.8 part of an isolating agent; 0.5 to 1 part of an anti-aging agent; the plugging agent provided by the invention is simple in preparation process, not only is beneficial to industrial production, but also is convenient to prepare plugging slurry on site, can achieve a good plugging effect, and provides an effective technical means for well leakage treatment.

The present invention provides a prefabricated plugging device for assembled flood control plugging of a dam, which relates to the technical field of flood control plugging and plugging, and comprises a mounting frame, wherein the mounting frame is provided with two groups, and the tops of the two groups of mounting frames are symmetrically rotatably provided with a first winding seat through bearings, and the bottoms of the mounting frames are symmetrically rotatably provided with a second winding seat through bearings, and steel wire ropes are wound in the winding shafts of the first winding seat and the second winding seat in the same straight line of the two groups of mounting frames, and a plurality of groups of prefabricated plate assemblies are arranged in the middle of the two groups of mounting frames, and the prefabricated plate assemblies include an upper plate. Compared with the prior art, a complete water retaining wall is formed by splicing a plurality of prefabricated plate assemblies and limiting by two limiting frames, and the prefabricated plate assemblies are sent into the water surface by four steel wire ropes, and the prefabricated plate assemblies will not disperse during the process, and at the same time, the number of prefabricated plate assemblies can be quickly adjusted and installed according to the width of the plugging, so as to effectively block the plugging.

The present invention provides an occluder and an occluding system, the occluding system comprising the occluder and a stent; the stent is implanted in the true cavity of aortic dissection and has a pore thereon; the occluder comprises an axially connected anchoring portion and an embolization portion, the anchoring portion comprises a first coil assembly, the embolization portion comprises a second coil assembly, the embolization portion is used to pass through the pore on the stent and then extend into the false cavity from the rupture of aortic dissection, the anchoring portion is arranged in the inner cavity of the stent, and the occluder is connected to the stent. The occluding system can avoid dislocation or displacement of the occluder, and also avoid secondary damage to the blood vessel wall, and has a good therapeutic effect.

A tracheostomy tube plugging device comprises a tracheostomy tube body used for being fixed relative to the neck of a patient, and a body through hole is formed in the middle of the tracheostomy tube body; the tracheostomy tube body is provided with a body through hole, the intubation tube is arranged on the side, facing the neck, of the tracheostomy tube body and communicated with the body through hole, and the connecting tube is arranged on the side, back to the neck, of the tracheostomy tube body and communicated with the body through hole; the adjusting mechanism comprises an adjusting box and an adjusting wheel, the connecting pipe penetrates in from one end of the adjusting box and penetrates out from the other end of the adjusting box, and when the adjusting wheel moves to different positions, the distances between the adjusting wheel and the bottom wall are different, so that the adjusting wheel can clamp or loosen the connecting pipe. According to the technical scheme, the air flux of the connecting pipe can be effectively adjusted or blocked through the adjusting box and the adjusting wheel of the adjusting mechanism, and finally the purpose of conveniently blocking the tracheostomy tube is achieved.

This utility model provides a sealing device for a dewatering well in a structural base plate, comprising a pre-embedded sleeve, a sealing plate, a first water-stop ring, and an operating rod. A pre-drilled hole is provided on the inner bottom plate of the pre-embedded sleeve. The sealing plate is fixed inside the pre-embedded sleeve by a limiting mechanism to seal the pre-drilled hole. The first water-stop ring is sandwiched between the inner bottom plate of the pre-embedded sleeve and the sealing plate around the pre-drilled hole. The operating rod is detachably mounted on the sealing plate to move the sealing plate to the limiting mechanism. Compared with existing technologies where welding quality is difficult to control, this utility model, through the synergistic effect of the above structures, can effectively seal the dewatering well, preventing seepage and leakage in the later stages of sealing, thus improving project quality. Furthermore, this sealing device has low environmental requirements and can be used even when the groundwater level is high or when there is confined water in the strata.