516results about How to "Play a sealing effect" patented technology

The invention provides a vertical crack grouting and reinforcing method of a prestressed concrete hollow slab bridge bottom plate. According to the method, pressure grouting equipment is mainly adopted to pour a cement-based grouting material into a prestressed concrete hollow plate cavity with a certain thickness, wide, deep and long vertical cracks on the bottom plate can be actively sealed fundamentally through effective adhesion of the grouting material and bottom plate concrete, thereby preventing leakage water inside plates and steams, as well as steam and harmful media and the like in air from entering the cracks to result in rust corrosion and breakage of prestressed steel stranded wires, and further improving the durability and safety of a bridge structure.

The invention discloses a packaging machine capable of being applied to the sampling industry. The packaging machine comprises a machine frame, wherein a sample inlet mechanism, an automatic cover pressing device, a sample discharge mechanism, a conveying mechanism and a control system are mounted on the machine frame; a plurality of sealable charge buckets are arranged on the conveying mechanism; the motion trails of the charge buckets on the conveying mechanism are connected in series with the sample inlet mechanism, the automatic cover pressing device and the sample discharge mechanism in sequence; and the bucket covers of the charge buckets are pressed to the tops of the charge buckets through the automatic cover pressing device, and mineral samples in the charge buckets are packaged in a sealed way. The packaging machine has the advantages of simple structure, easiness in control process, high running reliability, low fault rate, good sealing property and the like.

The invention relates to a gap type negative pressure adsorption wall-climbing robot, comprising a bottom plate, a negative pressure generating device, a sealing device, an advancing device and an electric control device, wherein the advancing device is of a dual-crawler type structure; the bottom plate comprises an upper bottom plate and a lower bottom plate, the upper bottom plate covers on thelower bottom plate, the lower bottom plate is suspended below the upper bottom plate by a support pillar, an air inlet hole is formed in the center of the lower bottom plate, a gap is reserved betweenthe peripheral edge of the lower bottom plate and the periphery of the upper bottom plate instead of connection, a flow guide chamber is formed between the upper and lower bottom plates, crawler walking troughs are formed in the lower bottom plate in bilateral symmetry by taking the air inlet hole as a center; the sealing device comprises a flow guide mechanism and a flow stop mechanism, the flowguide mechanism is obliquely arranged in the gap between the peripheries of the upper and lower bottom plates, the flow stop mechanism is arranged on the bottom surface of the lower bottom plate, anda plurality of quantity of sealing bulges are uniformly distributed on the lower surface of the flow stop mechanism. The robot is applicable to common wall surfaces, and meanwhile solves conflict between adsorption force and resistance in the negative pressure adsorption process, so as to flexibly move on the wall surface.

The invention discloses a magnetic liquid rotating sealing device suitable for a space station, and belongs to the field of mechanical engineering sealing. The magnetic liquid rotating sealing device suitable for the space station solves the problem that the prior magnetic liquid sealing device is not suitable for being used in space stations under the space environment, the complex space temperature environment can lead to changes of physical properties of magnetic liquid, and therefore sealing performance is affected; furthermore, space where the space stations can be installed is limited, the prior sealing devices are too large, and accordingly installing is affected. According to the device, a left pole shoe annular permanent magnet is arranged in a shell; a first bearing is arranged in an inner hole of the annular permanent magnet; a right pole shoe is arranged, and the magnetic liquid is filled into pole teeth of the right pole shoe; a magnetism insulating ring and a second bearing are sequentially arranged, and an end cover is fixed on the shell through a screw; a shaft is arranged in an inner hole formed after assembling of the left pole shoe, the first bearing, the right pole shoe, the magnetism insulating ring and the second bearing. The magnetic liquid rotating sealing device suitable for the space station can ensure that the magnetic liquid in the device operates under a temperature within an optimum temperature range all the time and guarantees sealing performance, and the axial-direction dimension of the device is reduced.

The invention provides a self-tapping dental implant. The self-tapping dental implant comprises a body, wherein the body is successively provided with a neck part, a body part, a root and a bottom from top to bottom in an adjoining manner; the neck part is a cylinder; the outer surface of the neck part is provided with a four-ring circular groove; the body part is a first tapered thread section; the root is a second tapered thread section; the thread tapers of the first tapered thread section and the second tapered thread section are different; three slant self-tapping cutting grooves are uniformly distributed in the periphery of the outer surface of the root; the bottom is a sphere; an open inner cavity is vertically formed in the radial middle part of the body; the inner cavity is successively provided with reverse tapered bores, regular polygon bores, cylindrical bores and inner threaded bores from top to bottom in an adjoining manner; the diameter of each cylindrical bore is the same as that of an inscribed circle of each regular polygon bore. The self-tapping dental implant has the function of platform transferring; due to the design of double tapers and arrangement of cutting grooves, implanting operation can be performed more easily, the initial stability of tooth implantation is improved, and the bone loss is reduced to the maximum extent. The matching of inner conical surfaces and the base station achieves the sealing effect to prevent micro leakage.

A leakproof structure design of an electric main shaft used for an oil mist mill is that a part at front end of the electric main shaft is divided into a revolving part and a motionless part. The revolving part comprises a rotating shaft 1 and a front screw cap 2; the motionless part comprises a front small cover 3, a dust cover 4, a front bearing block 6 and a newly designed baffle 8. Small clearance fit is adopted between the revolving part and the motionless part, with the radial clearance being between 0.4 and 0.6mm and the axial clearance being between 0.5 and 1mm. The axial length of the front screw cap is lengthened and a water splash groove and a labyrinth seal structure are designed along the axial length. A convex groove of the structure is used for mechanically sealing the front small cover, while another lengthened convex groove thereof is used for tightly fixing an inner ring of a bearing 7. The baffle is arranged on the water splash groove and half the width of the baffle can be blocked in the water splash groove but does not revolve with the front screw cap; a water splash recessed groove is designed at the lower end of the half width; and another half width of the baffle closely leans against the head face of the front small cover. The dust cover and the front bearing block adopt an O-shaped sealing ring 5 for sealing. With a drain hole being arranged at the lower end, the sealing ring has good sealing effect and long service life.

The invention relates to the field of a sealing system of an insulator compartment, and particularly provides an air sealing system device for a wet electrical dust precipitator insulator compartment. The air sealing system device comprises a master system, wherein the master system comprises a filter, a shut-off valve, a fan, an air quantity adjusting plate, an electric valve and a rectifier which are connected in sequence, wherein an air quantity adjusting conflict plate is arranged at the tail end of the rectifier, and is arranged in the insulator compartment; the electric valve is electrically connected with the air quantity adjusting conflict plate, and is used for adjusting the air quantity; a pressure sensor for determining airflow pressure is arranged in the rectifier; and the pressure in the insulator compartment is greater than a positive pressure value of smoke by adjusting the air quantity through the electric valve. The condition that the pressure in the insulator compartment is greater than the positive pressure value of the smoke is ensured by the sealing system, so that the potential safety hazard of the wet electrical dust precipitator caused by high-pressure smoke can be effectively prevented, air leakage of the high-pressure smoke towards the insulator compartment is completely eradicated, and the air sealing system device plays a sealing role.

The invention discloses an anti-collapse grouting consolidation device and a using method thereof. The anti-collapse grouting consolidation device comprises an outer flat drilling rod, a sealing device, and a two-way rib wing jet grouting drill. The sealing device sleeves the outer flat drilling rod at the opening of a drilling hole to ensure that the outer flat drilling rod is sealed at the opening of the drilling hole. The two-way rib wing jet grouting drill is connected with the outer flat drilling rod. A grouting pump jets grout into a tunnel at static pressure by means of permeation through the jet rib wing drill. A tunnel drilling rig drives the jet rib wing drill to rotate through the outer flat drilling rod. Through the jetted grout and the rotation of the rib wings, falling rocks can be cut off and removed or re-squeezed into the hole wall to repair the hole wall.

The invention discloses a treatment device for efficient solid waste treatment. The treatment device comprises a base, wherein a shell body is fixedly connected to the top of the base; a first motor is fixedly connected to at the central axis of the top of the shell body; the output end of the first motor penetrates into the shell body and is fixedly connected with a rotary shaft; stirring blades are fixedly connected to the two sides of the rotary shaft; and an inclined plate is transversally fixedly connected in the shell body, and located below the stirring blades. According to the treatment device disclosed by the invention, through the arrangement of the first motor, the rotary shaft, the stirring blades, the inclined plate, a filter plate, a movable plate, an electric telescopic rod, a support rod and a fixing block, the problem that an existing solid waste treatment device cannot treat a waste liquid in solid waste so that the solid waste treatment efficiency is reduced; and the treatment device for efficient solid waste treatment has the advantage of high efficiency, increases the solid waste treatment efficiency, saves lots of time for a user, facilitates use of the user, and improves the practicability of the solid waste treatment device.

The invention relates to a super strong cross laminated film self-adhesive waterproof coiled material which sequentially comprises an isolation protection layer, a non-asphalt-based self-adhesive layer, a strong cross laminated film, an asphalt self-adhesive layer and a PE isolation film from top to bottom, one side of the upper surface of the coiled material is a lap joint edge, and the other side of the lower surface of the coiled material is also provided with a lap joint edge. The bonding performance of the waterproof coiled material provided by the invention and post-cast concrete is better than that of an asphalt-based coiled material; the waterproof coiled material can be better bonded with a main body structure (namely a pre-laid reverse-bonding coiled material), the strong cross laminated film in the middle of the coiled material has good ductility, the coiled material can still be well bonded with the main body structure when a base layer slightly sinks or the main body structure slightly deforms, the coiled material cannot be separated, and a good waterproof effect can be achieved.

The invention relates to a novel packing impregnating agent and a method for impregnating packing by the impregnating agent. The novel packing impregnating agent is characterized by being prepared from the following ingredients in percentage by weight: 50 percent of colloidal graphite, 50 percent of tetrafluoro emulsion, 3 to 5 percent of molybdenum disulfide, 3 to 5 percent of paraffin and 10 to 20 percent of high-temperature silicon oil. Compared with the prior art, the novel packing impregnating agent has the advantage that the novel packing impregnating agent provided by the invention simultaneously has the advantages of the tetrafluoro emulsion, the colloidal graphite, the molybdenum disulfide, the paraffin and the high-temperature silicon oil, and overcomes the defects of a single lubricating agent. When being used for impregnating the packing, the novel packing impregnating agent is permeated to the lubricating agent inside the packing; the fiber compactness is improved; a sealing effect is achieved.

The invention provides a pair of damping breathing shoes. Each damping breathing shoe comprises a sole, a midsole and an upper, wherein an air valve mounting hole is formed at the heel position of the sole; a one-way air outlet valve is arranged on the air valve mounting hole; a foot bind is arranged on the sole; the midsole covers the foot bind and is in sealing fit with the foot bind; up-down vent holes are formed in the forefoot of the midsole; one end of the air valve mounting hole is led to an air cavity formed by the midsole and the sole while the other end is led to the outside space; a damping breathing ball is arranged upward at the heel of the sole; the damping breathing ball is of a hollow structure, and a round opening is formed at the upper end; the diameter of the opening is (1/4)-(2/3) of the diameter of the horizontal section circle of the damping breathing ball; and the damping breathing ball and the sole are integrally formed by the same material. The pair of damping breathing shoes has the characteristics of simple structure, high strength, long effective service life and good damping breathing effect.

The invention discloses a double-floating integrated mechanical seal with large shaft diameter, and relates to the technical field of mechanical seals. The double-floating integrated mechanical seal comprises a dynamic ring assembly and a static ring assembly, wherein the dynamic ring assembly comprises a dynamic ring which is connected with a rotary shaft by a shaft sleeve; a shaft sleeve O-shaped sealing ring is arranged between the shaft sleeve and the rotary shaft; a movable O-shaped sealing ring is arranged between the movable ring and the shaft sleeve; the static ring assembly comprises a static ring base and a static ring arranged on the static ring base; the end surface of the static ring is adhered with the end surface of the dynamic ring; a spring base is arranged on one side of the static ring base; a spring is arranged between the spring base and the static ring base; the double-floating integrated mechanical seal is characterized in that a floating O-shaped sealing ring is arranged at the bottom of the dynamic ring; a sealing cushion is arranged between the static ring and the static ring base; and waterlines are turned at the bottom of the static ring and the upper part of the static ring base, namely two planes contacting with the sealing cushion. According to the double-floating integrated mechanical seal disclosed by the invention, the floating O-shaped sealing ring is additionally arranged at the bottom of the dynamic ring, so that the sealing performance of the dynamic ring auxiliary seal is increased, and stress deformation generated by contacting can be reduced at the same time.

The invention discloses a manufacturing method for a carbon-graphite floating ring. According to the manufacturing method, combination surfaces of a graphite ring and a peripheral metal inlaid ring are combined reliably, thermal conductivity and electrical conductivity are good, and no blister scar is generated. According to the technical scheme for implementing the manufacturing method, the carbon-graphite ring and the metal inlaid ring which have working allowances are processed firstly, and the carbon-graphite ring is in interference fit with the metal inlaid ring; then the metal inlaid ring is heated to 280-320 DEG C in a heating furnace, the carbon-graphite ring is rapidly arranged in the metal inlaid ring in the interference fit mode, and the carbon-graphite ring and the metal inlaid ring are cooled naturally; afterwards, a floating ring assembly formed after inlaying is placed in a vacuum reaction kettle, thermosetting resin is added, micro gaps between the carbon-graphite ring and the metal ring are fully filled with the thermosetting resin, and the thermosetting resin is sintered at a high temperature to be completely carbonized; and finally finish machining is carried out, and the finished floating ring is obtained. Through the manufacturing method, the problems that according to a traditional process, the carbon-graphite ring and the metal inlaid ring are combined through high-temperature adhesive, a great number of gaps are formed between combination surfaces, and leakage occurs to the combination position under high pressure are solved.

The invention belongs to the technical field of anti-aging and moisturizing cosmetics, and particularly relates to a stem cell complex factor anti-aging moisturizing cosmetic which consists of the following raw materials: mixed fresh petals, mint leaves, mulberry leaves, mixed plant stem cell active matter, xanthan gum, phospholipid, protamine, deionized water, carbomer, benzyl alcohol and cetostearyl alcohol. The preparation method of the stem cell complex factor anti-aging moisturizing cosmetic comprises the following steps: S1, uniformly spreading mixed fresh petals, mint leaves and mulberry leaves on a grid plate of a distillation device, then pouring deionized water into distillation boxes of the distillation device, and switching on a power supply for distillation to obtain a mixtureof hydrolat and essential oil for later use. Through arrangement of the multiple layers of distillation boxes, petals can be fully spread, the heating area of mixed fresh petals is increased, and distillation efficiency is improved. The petals on the upper layer can be heated and distilled by steam distilled out from the fresh petals at the bottom in the upward moving process, and working efficiency can be further improved.

The invention discloses an air sealing method and an air sealing device for a washing machine. A sealing structure is designed by using the gap between an air sealing motor shaft and a motor shaft sleeve, adopting the principle that pressure intensity and volume are in an inverse ratio in the Boyle law and consulting the principle that air is sealed on a horizontal plane; annular convex ribs of certain height are arranged at the bottom of an inner drum of the washing machine to form a semi-closed chamber; when the water is continuously fed, a compressed air cavity can be formed in the chamber; and when the sealing port at the end of the motor shaft sleeve is positioned in the air cavity sealed by the water, the air in the air cavity can play a good role in sealing the water. By using the simple structure, seal between the motor shaft and the motor shaft sleeve of the washing machine is realized; the device has low production cost and good sealing effect; and improvement on seal between the motor shaft and the motor shaft sleeve of the washing machine can be realized without increasing high improvement cost on the conventional washing machine production line.

The invention discloses a safe crush-resistance assembly-type steel-structure elevator well. The elevator well comprises a frame column, a floor and an elevator well body, wherein the frame column is connected to the floor through an embedded part, and the frame column and a top board are directly welded to a top beam through an end sealing plate; the elevator well body is internally provided with an elevator girder and a frame girder, the elevator girder is provided with a first ring beam according to the height of an elevator door, and one side of the elevator girder, where the elevator door is not arranged, is provided with a second ring beam; the well wall of the elevator well body is provided with a light-steel keel plasterboard. According to the safe crush-resistance assembly-type steel-structure elevator well, by using an assembly-type steel structure to replace original concrete cast-in-place constructional columns and the ring beams and adding a brick well wall, a close well is formed, so that the construction is greatly accelerated, and the workload of staff is reduced; since the elevator girder is provided with the first ring beam according to the height of the elevator door and the side of the elevator girder, where the elevator door is not arranged, is provided with the second ring beam, the structure of the elevator well body is optimized; by arranging the plasterboard on the well wall, an effect of a partition wall is taken, and not only can a sealing effect be taken, but the properties of wind resistance and crush resistance can be improved.

The invention provides an electric connector accessory and an electric connector employing the same. A compression ring, a seal ring and an extrusion part of the electric connector accessory are sequentially assembled in an inner cavity in the rear end of a sleeve in a sliding manner; when a nut is screwed on the rear end of the sleeve, the nut moves forwards and drives the extrusion part to move forwards to exert extrusion force to the seal ring; the seal ring is extruded to deform and deforms along the radial direction; and the inner peripheral surface of the deformed seal ring is clung to a cable and the outer peripheral surface is clung to the sleeve to play a sealing role. Meanwhile, the extrusion force is transferred to the compression ring through the seal ring; and the compression ring shrinks along the radial direction and clamps the cable under the action of a throat structure on the inner wall of the sleeve. Thus, sealing and clamping of the cable can be simultaneously finished as long as the nut is tightened; the installation process is simplified; the number of parts is reduced; meanwhile, the electric connector accessory is simple in structure; and the cost is reduced.

The invention discloses a charging pile for a new energy vehicle. The charging pile comprises a charging pile body and a charging gun body; a containing groove is formed in the side wall of the charging pile body; an automatic charging mechanism is arranged in the containing groove and comprises a transverse moving device; and a first automatic door plate and a second automatic door plate are arranged at an opening of the containing groove and arranged in containing cavities in the groove wall of the containing groove correspondingly. Through the first automatic door plate and the second automatic door plate, when the automatic charging mechanism does not need to work, the automatic charging mechanism is contracted in the containing groove, at the moment, the first automatic door plate andthe second automatic door plate are closed, and thus the situation that during windy rain, the automatic charging mechanism is wet by rainwater, and consequently the risk of electric leakage occurs when charging is needed is avoided; and meanwhile, the situation that foreign objects are blown by wind, and consequently the automatic charging mechanism is damaged can be avoided, the first automaticdoor plate and the second automatic door plate are very simple and effective, and the safety of the charging pile is improved.

The invention provides an aluminum-plastic composite floor with water accumulation prevention and snow melting functions. The floor comprises a base layer made of aluminum alloy and an elastic surfacelayer which is attached to the base layer and mainly formed by resin, two side ends of the base layer are provided with a male splicing end with a male tenon structure and a female splicing end witha female groove structure respectively, during paving, any two adjacent floors in the length direction of the floors are connected in a matched mode through the male tenon structures and the female groove structures, a gap is formed between the upper surfaces of any two adjacent floors to form a water inlet, each of the male tenon structure and the female tenon structure is provided with a plurality of drainage grooves, one or more cavities are formed inside the base layer, and heating sources are arranged in the cavities or allowed to be arranged in the cavities. According to the aluminum-plastic composite floor with the water accumulation prevention and snow melting functions, through the design of the water inlet and the multiple drainage grooves, it is guaranteed that rainwater cannotpermeate into the lower portion of the floor and is drained as soon as possible; and when accumulated snow is generated on the surface of the floor, the accumulated snow can be quickly melted throughthe heating sources arranged in the cavities of the base layer.