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

The invention discloses a hygienic product. The hygienic product comprises a spacer layer, an absorbing layer and a bottom substrate layer, wherein the spacer layer is contacted with a human body; the absorbing layer is positioned in the middle; the bottom substrate layer is positioned below the absorbing layer and is far away from the spacer layer; the spacer layer is connected with the absorbing layer to form an absorbing body; the bottom substrate layer is detachably connected with the absorbing body; the absorbing layer consists of at least two sub-absorbing layers and at least one flow guide layer; the flow guide layer is arranged between adjacent two sub-absorbing layers; the sub-absorbing layers and the flow guide layer are superposed in turn from top to bottom; the flow guide layer is a flow guide net surface provided with deflector holes which are convex holes projecting outwards from the upper surface and the lower surface of the flow guide layer; bottom holes of the deflector holes are positioned on the flow guide net surface; and top holes of the deflector holes are far away from the flow guide net surface. The layers of the hygienic product can be split for using and can be used repeatedly, so the product has the characteristics of environmental protection, economy and excellent air permeability and prevents reverse leakage of liquid; and liquid absorbing situation can be directly observed from bottom, so a vivid prompt of the need of replacing the hygienic product is given to a user.

The invention discloses a surrounding rock crushed zone hollow grouting anchor rope hole sealing device. The device comprises a grouting anchor rope; the grouting anchor rope comprises a grouting pipe, and multiple steel strands wound on the outer peripheral side of the grouting pipe in a twisted mode; one end of the grouting anchor rope is a grouting end, and the other end is sleeved in an external pulp stop plug, a tray and an anchor rope anchor in sequence; the grouting pipe is provided with a pulp outlet near the front end; a screw plug for blocking the grouting pipe is arranged at the other end of the grouting anchor rope; gaps are reserved between the steel strands and the external pulp stop plug; and marithan is coated in gaps between the outer peripheral side of the external pulp stop plug and surrounding rock masses and in the gaps reserved between the steel strands and the external pulp stop plug. Meanwhile, the invention further discloses a blockage method. The device is simple in operation and prominent in grouting and hole sealing operation effect for crushed surrounding rocks, guarantees high-pressure grouting effect, and reduces the pulp leakage phenomenon.

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 relates to the field of disposable hygienic products, in particular to a 360-degree leakage-proof disposable absorption product. The 360-degree leakage-proof disposable absorption product comprises a main body, wherein the main body sequentially comprises a liquid-tight bottom layer, an absorption core body and a liquid-permeable surface layer from bottom to top, the upper surface ofthe main body is covered with a leakage-proof layer, and the peripheral edge of the leakage-proof layer is connected with the main body; an absorption through hole is formed in the middle of the leakage-proof layer, the projection of the absorption through hole in the absorption core body is located in the range of the absorption core body, leakage-proof rubber bands are arranged on two sides inthe width direction of the absorption core body, of the absorption through hole, and the two ends of each leakage-proof rubber band extend along the circumferential edge of the absorption through hole; and the leakage-proof rubber bands extend from the two ends of the absorption through hole in the length direction to the two ends of the main body in the length direction. The technical problems that existing disposable hygienic products such as leakage-proof paper diapers and leakage-proof sanitary towels are complex in structure, complex in process and high in production cost are solved. Theinvention further provides a forming process of the 360-degree leakage-proof disposable absorption product.

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 relates to the field of disposable hygienic products, in particular to a sanitary towel with a memory function. The sanitary towel solves the technical problems that an existing sanitary towel is easy to compact, so that the dry and comfortable performance is poor, bacteria are easy to breed, and gynecological diseases are easy to occur. The sanitary towel comprises a body, wherein the body comprises a bottom film, a surface layer and a water absorption layer clamped between the bottom film and the surface layer, the water absorption layer comprises a main absorption body close to the front end of the length direction and a secondary absorption body close to the rear end of the length direction, and a memory foam layer is arranged at the portion, located below the main absorption body, on the bottom film. The side, away from the rear end of the length direction, of the secondary absorption body is located below the memory foam layer, and the absorption performance of the secondary absorption body is smaller than that of the main absorption body.

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 an anti-leakage cold storage agent and a preparation method thereof, belonging to the technical field of phase-change cold storage materials. The anti-leakage cold storage agentis jelly-like, does not easily flow, is leak-proof, and has a phase-change temperature of 5.8-6.6 DEG C and phase change latent heat of about 152-168 KJ / Kg. The specific preparation process comprisesthe following steps: firstly, mixing a K2HPO4 aqueous solution with a polyethylene glycol aqueous solution, and then slowly dropwise adding n-tetradecane so as to form a mixed solution; finally, adding a mixed solution of a sodium carboxymethylcellulose aqueous solution and sodium dodecyl sulfate, and stirring to obtain the anti-leakage cold storage agent. The anti-leakage cold storage agent provided by the invention is convenient in preparation process and simple in technology, thus being suitable for large-scale preparation; furthermore, the phase change temperature of the cold storage agent is within a range of 5.8-6.6 DEG C, and the cold storage agent has the phase change latent heat of about 152-168 KJ / Kg, so that the cold storage agent can guarantee transported objects to be in a range of 2-8 DEG C for a certain period of time in a process of circulation on the basis of preventing leakage; therefore, the cold storage agent is suitable for the cold chain transportation industry of medicines such as vaccines.

The invention discloses a steam heating device. The steam heating device comprises a shell and a tube bundle, wherein a polluted nitrogen inlet tube and a polluted nitrogen outlet tube are arranged onthe shell, the tube bundle is arranged in a tube body, and two ends of the tube bundle are connected with a steam inlet tube and a condensate water outlet tube; and the steam heating device also comprises a first tube plate and a second tube plate, the first tube plate and the second tube plate are fixed to the two ends of the shell respectively, and the tube bundle penetrates through the first tube plate and the second tube plate. The steam heating device has the following beneficial effects that the first tube plate and the second tube plate are arranged, substances in the shell are effectively isolated through the first tube plate and the second tube plate, even if leakage occurs on one side, the leakage phenomenon does not occur on the other side, and therefore, the anti-leakage purpose is effectively achieved.

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 leak-proof, porous and volatile container structure based on liquid surface tension. The container comprises a container outer wall at the outside of the container; a container inner wall at the inner side of the container; a through hole extending to the inner of the container from the container outer wall; the through hole has a taper hole structure, wherein a part of the though hole at the container outer wall is larger and the end part inside the container chamber is smaller.

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 construction process of the present invention includes plastering the extension joint with cement mortar into arc and covering the arc with asphalt felt; plastering the flashing with cement mortar into tile shape and covering it with asphalt felt; spreading lime mortar base layer; depositing two C20 waterproof concrete layers on the base layer and leveling and press finishing; spraying water to cure; laying supporting bricks, installing heat insulating plate and plastering with cement mortar on the surface of heat insulating plate; and making lattice with flat bar. The present invention can result in high waterproof effect.

The invention provides an anti-leakage cold storage agent and a preparation method thereof, belonging to the technical field of phase-change cold storage materials. The anti-leakage cold storage agentis jelly-like, does not easily flow, is leak-proof, and has a phase-change temperature of 5.8-6.6 DEG C and phase change latent heat of about 152-168 KJ / Kg. The specific preparation process comprisesthe following steps: firstly, mixing a K2HPO4 aqueous solution with a polyethylene glycol aqueous solution, and then slowly dropwise adding n-tetradecane so as to form a mixed solution; finally, adding a mixed solution of a sodium carboxymethylcellulose aqueous solution and sodium dodecyl sulfate, and stirring to obtain the anti-leakage cold storage agent. The anti-leakage cold storage agent provided by the invention is convenient in preparation process and simple in technology, thus being suitable for large-scale preparation; furthermore, the phase change temperature of the cold storage agent is within a range of 5.8-6.6 DEG C, and the cold storage agent has the phase change latent heat of about 152-168 KJ / Kg, so that the cold storage agent can guarantee transported objects to be in a range of 2-8 DEG C for a certain period of time in a process of circulation on the basis of preventing leakage; therefore, the cold storage agent is suitable for the cold chain transportation industry of medicines such as vaccines.

The invention discloses a temperature controller for a spring-type electric kettle, which relates to the technical field of temperature controllers, and comprises a lower connecting seat and an upper connecting seat, a water inlet pipe is installed on the lower connecting seat, and a water outlet pipe is installed on the upper connecting seat. A hollow sealing plug is installed at one port of the water outlet pipe. The inner wall of one end of the sealing plug is in conflict with the water inlet pipe, and the outer wall of the other end of the sealing plug is in conflict with the water outlet pipe. There are multiple arc-shaped pieces on the inner wall of the sealing plug, and more The free ends of the two arc-shaped pieces interfere with each other and seal the hollow part of the sealing plug. A steel ball is arranged on the port at the other end of the sealing plug, and a leaking plate is installed at the other port of the outlet pipe. Between the leaking plate and the steel ball A return spring is arranged between them, and an umbrella seal is arranged on the upper limit of the leaking plate along the axial direction of the water outlet pipe, and the area projected on the leaking plate by the umbrella seal is larger than the area of ​​the leaking plate; The effect of the sealing and structural stability of the outlet pipe on the connection.

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 provides a multi-end-face self-regulation starting steam turbine shaft end sealing method. High-pressure medium fluid of a first-stage cavity passes through a first pressure adjusting cavity, the first pressure adjusting cavity releases fluid pressure to enter a pressure cavity of a first flexible static ring, the pressure cavity of the first flexible static ring expands, and the first flexible static ring and a first movable ring are pressed to form a first-stage friction pair for sealing; a second-stage seal of a second flexible static ring and a second movable ring is not started at the beginning, only when fluid leakage happens to a second-stage cavity to generate pressure, leaked fluid passes through a second pressure adjusting cavity, the second pressure adjusting cavity releases fluid pressure to enter a pressure cavity of the second flexible static ring, and the second flexible static ring and the second movable ring are pressed to form a second-stage friction pair for sealing; and a third-stage seal of a third flexible static ring and a third movable ring is not started at the beginning, only when fluid leakage happens to a third-stage cavity to generate pressure, leaked fluid passes through a third pressure adjusting cavity, the third pressure adjusting cavity releases fluid pressure to enter a pressure cavity of the third flexible static ring, and the third flexible static ring and the third movable ring are pressed to form a third-stage friction pair for sealing.

The invention relates to the field of disposable sanitary products, in particular to a sanitary napkin with a memory function, which solves the technical problems of poor dryness, bacteria breeding and gynecological diseases caused by the existing sanitary napkins being easily compacted. It includes a main body, the main body includes a bottom film, a surface layer, and a water-absorbing layer sandwiched between the bottom film and the surface layer, and the water-absorbing layer includes a main absorber near the front end in the longitudinal direction and a secondary absorber near the rear end in the longitudinal direction , the bottom film is located below the main absorber with a memory cotton layer, the side of the secondary absorber away from the rear end in the longitudinal direction is located under the memory cotton layer, and the absorption performance of the secondary absorber is less than that of the main absorber performance.

The invention belongs to the technical field of sealing for alcohol extraction kettles, and particularly relates to a combined sealing device for a quick-open type alcohol extraction kettle. The device comprises a sealing end seat and a cover plate, wherein seat grooves are concavely formed in adjacent surfaces of the cover plate and the sealing end seat respectively; a first heat insulation sealing seat, a sealing ring and a second heat insulation sealing seat are successively arranged on stacking surfaces of the insides of the seat grooves in an adhered manner; and annular grooves are concavely formed in the inner side surface and the outer side surface of the sealing ring respectively, so that a wavy-line-shaped or comb-teeth-shaped structure is formed on the axial cross section of the sealing ring. The device further comprises a hoop, a bayonet is concavely formed in an inner ring surface of the hoop coaxially, sink slots or notches are annularly and concavely formed in the outer walls of the cover plate and the sealing end seat correspondingly, and the hoop applies a force in the axial direction to press the cover plate and the sealing end seat. The device has the advantages of reasonable structure, convenience in mounting and capability of being used repeatedly. Requirements of sealing of equipment under the working conditions of high temperature and high pressure can be met effectively, the working reliability is high, and the service life can be guaranteed effectively.

The invention relates to a plastic pipe well, in particular to a plastic pipe well integrated device capable of preventing leakage. The flange plates are arranged at the two ends of the pipe body and used for combining and connecting the pipe body, a leakage-proof mechanism is arranged outside the pipe body, the leakage-proof mechanism comprises a self-adjusting leakage-proof device, and the self-adjusting leakage-proof device comprises an upper leakage-proof pipe and a lower leakage-proof pipe. According to the sealing device, water flows into the cavity on the right side of the sealing ring through the pressure pipe, hydraulic force generated by flowing substances in the cavity on the right side extrudes the sealing ring at the moment, the sealing ring moves towards the leakage position till the leakage position is sealed, hydraulic pressure in the pressure pipe and the cavities is balanced at the moment, the sealing ring cannot move, and the leakage position is sealed; in addition, the upper leakage-proof pipe and the lower leakage-proof pipe of the pipe well are integrally formed with the pipe body, so that the installation difficulty is reduced.

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.

The invention provides a sand shooting nozzle and a core shooting machine comprising the same. The sand shooting nozzle comprises a sand shooting passage (11), and is characterized in that at least one side of the sand shooting passage (11) consists of a movable wall board (12); the upper part of each movable wall board is provided with a slope, so that the sectional area of the upper part of the sand shooting passage (11) is gradually decreased from top to bottom; and each movable wall board (12) is supported by elastic devices. The sand shooting machine has the advantage that the sand shooting nozzle can be prevented from being blocked during sand shooting.