39results about How to "To achieve the purpose of leak prevention" patented technology

The invention provides a polypyrrole coated low-carbon alkane cold storage material and a preparation method thereof and belongs to the technical field of phase-change cold storage materials. A specific preparation process of the cold storage material comprises the following steps: firstly, mixing sodium carboxymethyl cellulose, sodium polyacrylate and a polyvinyl alcohol water solution; then slowly dropwise adding low-carbon alkane to form a mixed solution; finally, adding diatomite, a pyrrole monomer and an ammonium persulfate solution in sequence; washing and filtering, and drying at 40 DEGC to obtain the polypyrrole coated low-carbon alkane cold storage material. The cold storage material is of a black powder shape; the phase change temperature is 4.6 to 6.8 DEG C and the phase changelatent heat is about 135 to 158KJ/Kg, so that leakage can be prevented in a utilization process; the temperature of transported logistics can be within a range of 2 to 8 DEG C in certain time in a distribution process, and the cold storage material is suitable for cold-chain transportation industries of medicines including vaccines and the like. The polypyrrole coated low-carbon alkane cold storage material has the advantages of convenient preparation process and simple technology and is suitable for large-scale production.

The invention discloses a drying calcining treatment system of drilling well waste mud. The system comprises a rotary type drying calcining device, a rotary driving mechanism and a rotary support mechanism, wherein the rotary type drying calcining device passes through the rotary driving mechanism and the rotary support mechanism, the drying end of the rotary type drying calcining device is provided with a raw material feeding system and a drying heat-supplying device, the calcining end of the rotary type drying calcining device is provided with a pulverized coal burner and a screw conveyor, the rotary type drying calcining device is inclined, the drying end is higher than the calcining end, the gas outlet of the drying heat-supplying device is connected with the hot wind inlet of the rotary type drying calcining device, the burning end of the pulverized coal burner extends into the calcining end, and the middle part of the rotary type drying calcining device is connected with a dust removal purification system. The system is quick, high efficient, convenient and low dissipative, the treatment of the drilling well waste mud does not need the secondary treatment, the treated ultimate products can be used as recycling materials and the pollution problem of the drilling well waste mud is thoroughly solved.

The invention discloses a preparation method of an infrared laser protective film. The preparation method comprises the following steps: (1) coating an adhesive on a substrate layer to form an adhesive layer; (2) uniformly mixing antimony oxide, indium oxide and carbon nanotubes according to a mass ratio of 1:1:1, dispersing the mixture into a polyethylene glycol terephthalate material to obtain amaster batch, and extruding the master batch onto the first adhesive layer through an extruder with a grating type die head to form an infrared laser grating treatment layer with grating intervals; (3) arranging a protective layer on the infrared laser grating processing layer; and (4) coating the protective layer with an adhesive to form a mounting adhesive layer, and then adhering a release layer to the mounting adhesive layer to obtain the infrared laser protective film. The preparation method is simple, and the prepared product can effectively prevent information leakage.

The invention relates to a water-cooling heat dissipation type computer case with a secret leakage prevention function. The water-cooling heat dissipation type computer case comprises a case body, a mainboard and a water cooling assembly are arranged in the case body; the water cooling assembly comprises a cooling water tank; the cooling water tank comprises a cooling water tank body and a tank cover; a gap is formed between the side surface of the tank cover and the inner side wall of the cooling water tank body; a flexible separation blade is fixedly arranged on the box cover; a hard disk isfixedly arranged on the upper surface of the box cover; a longitudinal moving assembly, an identity recognition assembly, a controller and a power supply are further arranged in the case body; when the computer case works normally, the water cooling assembly is used for cooling the mainboard, and the cooling effect is good; when the identity recognition assembly monitors that the hard disk is dismounted by a dismounting person; if the hard disk is a thief, the identity recognition assembly transmits a damage signal to the controller to enable the controller to control the longitudinal movingassembly to drive the box cover to move downwards, the hard disk moves downwards along with the longitudinal moving assembly until the hard disk is submerged by cooling water, and therefore the hard disk is damaged, data on the hard disk are effectively prevented from being stolen, and the purpose of secret leakage prevention is achieved.

The invention discloses a novel rotary drum type coking coal dryer sealing device. The novel rotary drum type coking coal dryer sealing device comprises an adjusting supporting frame, a friction ring, a sealing body, an ash hopper supporting base, an ash hopper, a small retaining ring and a large retaining ring. The small retaining ring is welded to a drum body and is a movable seal ring. The large retaining ring is welded to a discharge box structure and is a fixed seal ring. A labyrinth seal is formed between the large retaining ring and the small retaining ring. A second labyrinth seal is formed between the ash hopper and the friction ring. The sealing body serves as the last seal and comprises an abrasion resistant plate, a sealing material, a press plate, a friction plate and a reflective plate.

The invention discloses a negative-pressure leakage preventing water cup which comprises a cup lid and a cup body. The top of the cup lid is an exhaust rubber face, the exhaust rubber face is in sealed connection with a cup lid body, an exhaust hole is formed in the exhaust rubber face and is provided with an exhaust hole plug, a communicating hole is formed in the cup lid, the inside of the cup lid body is a cup lid air cavity, cup lid outer threads are arranged at the lower end of the cup lid body, corresponding cup opening inner threads are arranged at the open position of the upper end of the cup body, the cup body is connected with the cup bottom to form a whole, and internal space of the cup body is water storage chamber. A part of air in the cup lid air cavity of the water cup is exhausted by pressing the exhaust rubber face with hand, and the pressure intensity inside the airtight water cup is smaller than atmosphere pressure intensity by means of elastic contractility of the exhaust rubber face to form a negative-pressure state. Therefore, water in the water cup does not flow out of the cup under the atmospheric compression, the leakage preventing purpose is achieved, and the negative-pressure leakage preventing water cup is easy to manufacture, low in cost and convenient to carry and use.

The invention provides a plugging tube for an air conditioner pipeline passing hole. The plugging tube for the air conditioner pipeline passing hole can improve the waterproof performance of the air conditioner pipeline passing hole and is suitable for walls of multiple thickness specifications. The plugging tube for the air conditioner pipeline passing hole comprises an inner tube and an outer tube. One end of the inner tube and one end of the outer tube are connected through threads. The outer wall of the other end of the inner tube is provided with an inwards recessed annular groove. An inner soft rubber ring is installed in the inwards recessed annular groove in an interference manner. The tail end of the other end of the outer pipe is provided with an annular convex shoulder with thediameter larger than that of an outer pipe body. An outer soft rubber ring is clamped on the inner side of the annular convex shoulder.

The invention provides a multi-end-face self-regulation starting steam turbine shaft end sealing device. The multi-end-face self-regulation starting steam turbine shaft end sealing device comprises a shell, a rotating shaft, a movable ring base and a pressure regulator; a medium fluid cavity is formed between the shell and the rotating shaft; the shell comprises a machine shell and a static ring base; the static ring base is provided with a first flexible static ring, a second flexible static ring and a third flexible static ring which are coaxial with the rotating shaft; the diameter of the first flexible static ring, the diameter of the second flexible static ring and the diameter of the third flexible static ring are sequentially reduced; the rotating shaft is fixedly sleeved with the movable ring base; the movable ring base is fixedly provided with a first movable ring, a second movable ring and a third movable ring which correspond to the first flexible static ring, the second flexible static ring and the third flexible static ring; each flexible static ring comprises a friction part and a pressure cavity, wherein the friction part and the corresponding movable ring are in contact sealing; and a first pressure regulating cavity, a second pressure regulating cavity and a third pressure regulating cavity are formed in the pressure regulator. The shaft end sealing device has high reliability, self-regulation sealing can be achieved, torque is low, power losses are small, and sealing performance is good.

The invention discloses a wind inlet ring. The wind inlet ring comprises a wind inlet ring body, a first convex edge, a second convex edge and a third convex edge, wherein the first convex edge, the second convex edge and the third convex edge are sequentially arranged on the wind inlet ring body from inside to outside; and an annular groove which fits the end surface of a wind wheel is formed between the second convex edge and the third convex edge. The invention also discloses the wind wheel, a draught fan structure and an extractor hood. According to the wind inlet ring, the annular grooveformed between the second convex edge and the third convex edge is formed in the wind inlet ring; the main end surface of the wind wheel is outwards bent to form a side end surface, and the side end surface is matched with the annular groove to form a labyrinth sealing channel; throttling effect is realized while wind flows through the twisty labyrinth channel, and thus the purpose of resisting leaking is achieved.

The invention discloses a leak-proof volatile container structure with holes based on the surface tension of liquid, which comprises: the outer wall of the container located outside the container; the inner wall of the container located inside the container; The hole is a conical hole-like structure with a larger portion on the outer wall of the container and a smaller end portion in the container cavity.

The invention discloses an anti-leakage double-surface pulling rivet and a double-surface tight connecting method. The anti-leakage double-surface pulling rivet comprises a rivet, a lantern ring and a sealing ring; the rivet consists of a rivet cap and a pulling rivet rod; the end of the pulling rivet rod and the inner end surface of the rivet cap form an integrally molded structure; an annular groove for surrounding the pulling rivet rod is formed in the inner end surface of the rivet cap; the sealing ring is arranged in the annular groove for achieving a sealing effect in tight connection; and the lantern ring is sleeved on the pulling rivet rod to connect a riveted piece through riveting. A gap between a rivet hole and the rivet and a gap between the rivet cap and the riveted piece are eliminated; and a special structural design is adopted to tightly match with the sealing piece to achieve the purpose of leakage prevention. The anti-leakage double-surface pulling rivet has such characteristics as high connecting strength, good leakage prevention, high corrosion resistance and convenience to install.

The invention belongs to the technical field of slip casting of ceramic products, and provides a slip casting mechanism. The slip casting mechanism comprises a male die and a female die. The male die and the female die form a sludge molding cavity after being combined. A slip casting opening led to a cavity is formed in the male die or the female die. The female die or the male die is fixedly connected to the end of a guide groove below the female die or the male die, and the corresponding male die or female die is in sliding fit with the guide groove and is driven by an air cylinder. The edge of the combined face between the male die and the female die is of a fold line structure. Compared with a traditional manner that the female die and the male die are fastened and connected through a bolt, the stroke of the air cylinder is controlled to adjust the combined gap between the male die and the female die, and sludge leakage caused when the gap between the male die and the female die is too large is avoided.

The invention relates to a labyrinth sealing structure which mainly comprises a stator group composed of a machine shell and a partition plate, a rotating shaft, an impeller, a sealing assembly mounted between the shell and the rotating shaft and the like. The labyrinth sealing structure is characterized in that (1) sealing teeth which are sequentially arranged at intervals are arranged on the rotating shaft; (2) a matching groove is formed in the partition plate in the stator group, and the sealing assembly is directly connected with the matching groove or connected with the matching groove through a bolt in a holding manner; (3) the height of the sealing teeth is 3.5 mm-5 mm, the distance between the center lines of the teeth is 4 mm-5 mm, and the included angle between every two sealing teeth is 30 degrees; and (4) the structural forms of the sealing teeth at an impeller opening ring are different, and the sealing positions and the sealing teeth number can also be different, wherein the sealing teeth number is generally 4-25.

The invention relates to a leakproof dustpan, comprising a dustpan body and a handle, the dustpan cover is provided with a hole, the handle penetrates the hole and is movably connected with the dustpan cover. Adopting the structure, rubbish can be swept into the dustpan by opening the dustpan cover when picking rubbish, the dustpan cover is closed after rubbish is picked, so as to prevent the rubbish from 'running out', thus realizing the aim of being leakproof.