60results about How to "Slow down the leak rate" patented technology

This invention relates to the process of a kind of explode restrain material. chemical composition of it includes Si 0.1-0.6,Fe 0.2-0.7,Cu 0.05-0.1,Mn 0.6-1.2,Zn 0.05- 0.1,Ti 0.03-0.12,Na 0.02-0.07,and Al the rest .the process includes steps as follows: melt, de-sludge and de-airing, make body, milling, first anneal, hot press, cold press, second anneal, stamp to open the sew, tension.

The invention relates to a leakage self-saving container for storing a dangerous chemical, which comprises a first container used for storing the dangerous chemical; and a second container which is fixedly arranged in the first container, filled with a substantially harmless liquefied gas and provided with a controllable opening to the outside. When the dangerous chemical is leaked or threatened by a high temperature caused by an accident, the temperature in the first container can be reduced by releasing the liquefied gas in the second container, so that the pressure in the first container is reduced and leakage or explosion caused by over pressure is avoided; or the viscosity of the dangerous chemical is increased to slow the leaking speed of a leakage to win more precious time for effective rescue.

Scroll compressor (1) with a stationary, stator scroll (8) and a movable rotor scroll (16) and a drive to move the rotor (6), whereby in each position places are formed with an instantaneous minimum opening (29) between the rotor scroll (16) and the stator scroll (8) whereby at each height (2) in a minimum opening (29) there is a local transverse internal clearance (S), whereby at least one of the stator flanks (10 / 11) or rotor flanks (18,19) comprises an adapted flank section (37-40) with an initial local stator flank deviation ([delta]T0i, AT0u) or rotor flank deviation ([delta]R0i / AR0u) that is different to zero at each point when the rotor (6) is stationary, and during nominal operation of the scroll compressor corresponding instantaneous final local stator flank deviations ([delta]Tfi,[delta]Tfu) or rotor flank deviations ([delta]Rfi,[delta]Rfu) whose absolute values are smaller.

The invention belongs to a preparation method of an explosion-suppressing material. The explosion-suppressing material comprises the following chemical compositions by weight percent: 0.3-0.5 percent of Si, 0.1-0.3 percent of Fe, 0.15-0.25 percent of Cu, 1.0-1.5 percent of Mn, 1.0-1.5 percent of Mg, 0.1-0.3 percent of Zn, 0.15-0.25 percent of Ti, 0.03-0.06 percent of La, 0.05-0.09 percent of Ce and the balance Al. A grain structure of the explosion-suppressing material is refined by adopting a repeated heating forging and pressing method. The explosion-suppressing material provided by the invention has excellent extrusion resistance, collapse prevention, zero dreg-falling and high-strength explosion-suppressing property. The performance indexes of the explosion-suppressing material, such as strength, plasticity, fracture toughness and fatigue resistance, are greatly increased according to the preparation method; the technology is simple and is easily performed; and the service life of the explosion-suppressing material is prolonged.

The invention discloses a method for enhancing a write-in speed of a floating body dynamic random memory cell. A semiconductor device is manufactured on a substrate. and then the method also comprises the following steps that: ions are implanted into a side wall film layer at a certain angle alpha that is inclined to a drain region; the side wall film layer is etched; after the etching, the width of one portion of the side wall is larger than the width of the other portion of the side wall, wherein the one portion of the side wall is close to a source end and the other portion of the side wall is close to a drain end; and doping and annealing are carried out on the semiconductor device as well as a source electrode, a drain electrode and a channel are formed on the substrate. In addition, the invention also discloses a structure for enhancing a write-in speed of a floating body dynamic random memory cell. The structure comprises a substrate, a grid, and a shallow trench isolation channel. A side wall, which is covered on a side wall of the grid, includes a source end side wall and a drain end side wall, wherein the width of the source end side wall is greater than that of the drain end side wall. Besides, a source electrode, a drain electrode and a channel are formed on the substrate; and doped ions of the drain electrode are more close to the channel than doped ions of the source electrode to the channel.

The invention provides a manufacturing method for improving the writing speed of a floating body effect storage unit, and the floating body effect storage unit, and belongs to the technical field of semiconductor manufacturing. The invention adopts the core scheme that: a mask layer is formed on a sidewall material which is adjacent to a source, and the sidewall material which is adjacent to a drain is exposed; partial thickness of the exposed sidewall material is etched; the mask layer is removed, and the sidewall material is re-etched, sidewalls are formed on two sides of a gate, and the sidewall which is adjacent to the source is wider than the sidewall which is adjacent to the drain; and by using the sidewalls as masks, heavy doping and annealing processes are performed to form the source and the drain, doped ions of the drain are closer to a channel, and the doped ions of the source are closer to the channel and a substrate. By the invention, a longitudinal electric field in the channel of the drain is improved, and the current of the substrate is improved; moreover, the leakage speed of accumulation carriers from the source is reduced, so that the writing speed of the floating body effect storage unit is improved.

The invention discloses a safety protection device for detecting gas leakage of an oil gas pipeline. The device comprises a protective component, wherein the protective component comprises a cutting mechanism, the cutting mechanism comprises a ventilating chamber, a pressing chamber is formed in the upper end wall of the ventilating chamber, a lifting chamber with an upward opening is formed in the lower end wall of the ventilating chamber, a pressing rod is arranged in the pressing chamber and the upper end of the pressing rod is located in the outside space, and a pressing plate is arrangedat the lower end of the pressing rod. The device can be utilized again after the leakage is completed, so that the actual utilization rate of the device is improved; the device can automatically and stably judges whether gas leaks or not, so that the device can still work even under the condition of no person and the security is improved; and the device can stabilize the leaked air pressure aftercutting the transporting of the gas, so that the gas leakage rate is decreased, the gas leakage speed is reduced and the security is improved.

A hydrodynamic bearing device includes a stator and a rotor. The rotor forms a bearing clearance and a sealing part connected with the bearing clearance. A liquid-vapor interface is disposed in the sealing part together with the stator, and the bearing clearance is filled with a lubricating fluid. The stator and the rotor form a storage space connected with the sealing part to receive the lubricating fluid. The storage space has a region in which force applied to the liquid-vapor interface increases by a capillary phenomenon at a time that the lubricating fluid leaks to fill the bearing clearance.

The invention relates to an explosion suppression material. The explosion suppression material comprises the following chemical components in percentage by weight: 0.05-0.1% of Si, 0.03-0.035% of Cu, 1.0-1.1% of Mn, 1.0-1.1% of Mg, 0.2-0.3% of Cr, 0.05-0.08% of Ti, 0.08-0.12% of Fe, 0.08-0.1% of Zn and the balancing amount of Al. The explosion suppression material has an excellent corrosion-resistant property and is high ductility; in addition, the explosion suppression material is relatively high in strength and can completely meet the needs.

The invention discloses a leakproof airbag cavity tire, and belongs to the field of tires. The leakproof airbag cavity tire comprises a tire body and further comprises bag cavities which are bag-shaped cavities formed inside the tire body; the adjacent bag cavities are connected in series through a channel; reinforcing holes are formed between a tire face of the tire body and the bag cavities; a valve hole formed in the side face of the tire body, an inflating valve installed in the valve hole, an inflating valve cap movably connected to the end of the inflating valve and a sealing plug are further included, and the bag cavities communicate with the outside of the tire body; the inflating valve is placed on the side face of the tire body; the inflating valve cap seals the inflating valve;the sealing plug is fixedly connected to the tail end of the inflating valve cap; and the inner surface of each bag cavity is provided with an airtight layer. According to the leakproof airbag cavitytire, the bag cavities which are connected in series through the channels are arranged inside the tire body, the degree of air leakage when the tire is punctured is greatly reduced, and tire burst caused when the air leaks is prevented; and according to the tire, mastication, mold assembly, injection, mold opening, secondary mold assembly, air injection, vulcanization, pressure relief, airtight layer preparation and secondary mold opening are carried out for direct molding, and production and manufacturing are easy.

The invention discloses a roof construction method of a broken bridge waterproof roof gutter spout funnel. The roof construction method includes the following steps that a water stop ring on an outerbarrel of the gutter spout funnel is pre-embedded in a concrete layer when a roof reinforced concrete floor slab is poured; a first leveling layer, a vapor barrier layer, a heat insulating layer, a slope making layer and a second leveling layer are laid successively on the concrete layer; a coiled material layer is laid on the second leveling layer, the tail end of the coiled material layer is putinto a water stop groove of the outer barrel, and then the water stop groove is filled with waterproof glue; a waterproof layer and a coiled material protective layer are laid successively on the coiled material layer; and the gutter spout funnel is inserted into the outer barrel pre-embedded in the concrete layer through an inner barrel. According to the roof construction method of the broken bridge waterproof roof gutter spout funnel, the waterproof effect is good.

The invention relates to an analog simulated skin and a puncture module with the analog simulated skin, belonging to the technical field of medical teaching. The analog simulated skin is divided into at least one outer simulated skin layer and an inner simulated skin layer, wherein the edges of the two layers are closely fit to form a sac structure. The puncture module with the analog simulated skin mainly comprises the analog simulated skin and a base, wherein the base mainly comprises an upper cover and a lower cover; the upper cover is hollow and tightly screwed with the lower cover; the lower cover is in a depressed structure, an analog puncture liquid is stored in the depressed structure, and the lower cover is tightly screwed with the upper cover. When a needle is pulled out from the analog simulated skin, the liquid enters the sac in turn, and when the liquid in the sac is with a certain volume and pressure, the liquid penetrates outside from the outer simulated skin layer, thus the sac structure completely reduces the penetration rate of the liquid when the analog simulated skin is punctured, thus the analog simulated skin with the sac structure can be continuously punctured for hundreds of times. Thus, the quality of the products is improved on the basis of present materials, and the cost is reduced.

The invention belongs to a noncorrosive compression-resisting explosion-suppressing material and a preparation method thereof. The noncorrosive compression-resisting explosion-suppressing material comprises the following compositions: 0.03-0.08 parts of Si, 0.03-0.05 parts of Fe, 0.02-0.04 parts of Cu, 0.9-1.5 parts of Mn, 0.9-1.5 parts of Mg, 0.09-0.15 parts of Zn, 0.09-0.12 parts of Ce and the balance Al. A rare earth film layer is arranged on an outer layer of a prepared honeycomb netted explosion-suppressing material. The explosion-suppressing material provided by the invention has excellent corrosion resistance, extrusion resistance, collapse prevention, zero dreg-falling, and high-strength explosion-suppressing property. The performance indexes of the explosion-suppressing material,such as strength, plasticity, fracture toughness and fatigue resistance, are greatly increased according to the preparation method; the technology is simple and is easily performed; and the service life of the explosion-suppressing material is prolonged.

The invention discloses inflating and encapsulating equipment for producing bubble packs. The inflating and encapsulating equipment comprises a base, an air injection opening, a clamping module, an encapsulating module and a control system, wherein the air injection opening can expand and contract relative to the base and is used for injecting air in the bubble packs; the clamping module is used for fixing the bubble packs; a heating device is arranged on the encapsulating module; the encapsulating module is used for sealing the mouths of the bubble packs after air injection is completed; the clamping module and the encapsulating module are positioned in the same plane and are arranged in the telescoping direction of the air injection opening; the clamping module is positioned on the outer side of the encapsulating module. Through the adoption of the inflating and encapsulating equipment disclosed by the invention, the inflating step and the encapsulating step for the bubble packs can be integrally completed, so that the workload of workers is effectively reduced, and the production efficiency can be improved; the conveying links of materials can be reduced, so that the storage cost and the management cost are reduced; the air tightness after the bubble packs are encapsulated can be improved, so that the air leaking speed is greatly lowered; therefore, the bubble packs can have a good protecting effect in a long time.

The invention discloses an electric furnace structure used for fluoridated salt production and a manufacturing method of the electric furnace. The electric furnace structure comprises a furnace body (1) and is characterized in that an induction coil layer (2) is arranged on the furnace body (1), a graphite crucible (3) is arranged in the middle of the furnace body (1), and a calcium oxide layer (4) is arranged between the induction coil layer (2) and the graphite crucible (3). An applicant of the invention does a large number of experiments, and screens and compares various fireproof materials, and finds that if calcium oxide is taken as the fireproof material, the fluoridate salt can not leak in the production process, and the service life of the crucible can be prolonged to be more than 10 days. Simultaneously, calcium oxide is wide in source and low in cost, and is the optimal fireproof material for the industrial production of the electric furnace provided by the invention. Compared with the prior art, the electric furnace structure has the advantages that the leakage amount of the fluoridate salt is reduced, the service life of the graphite crucible is prolonged, the production effect is improved, the production cost is lowered, and the like.

The invention discloses an installation structure of an electric furnace induction coil for fluoride salt production. The installation structure comprises a furnace body (1). The installation structure is characterized in that an induction coil layer (2) is arranged on the furnace body (1); a plumbago crucible (3) is arranged in the middle of the furnace body (1); a calcium oxide layer (4) is arranged between the induction coil layer (2) and the plumbago crucible (3); an induction coil (6) of the induction coil layer (2) is arranged at the middle part of the plumbago crucible (3); the plumbago crucible (3) is divided into a feeding zone (8), a reaction zone (9) and a precipitation zone (10); the installation length L of the induction coil (6) is 200-400 mm smaller than the height H of the plumbago crucible (3). An applicant disclosed by the invention finds that no leakage is generated in the production process of fluoride salt by using calcium oxide as a refractory material; the service life of the crucible can be prolonged to more than ten days; the calcium oxide is an optimal refractory material for industrial production of the installation structure.

The invention provides a manufacturing method for enhancing read-in speed of a floating body effect storage unit and an intermediate transitional semiconductor device, which belong to the technical field of semiconductor manufacture. The core of the invention is that: a side wall material is deposited, and inclination plasma surface processing is conducted on the side wall material, so that the surface characteristics of the top of the side wall material and the side part close to a source electrode of the side wall material are changed, and the side part close to a drain electrode of the side wall material is not changed; the side wall material is etched to form a side wall, and the width of the side wall close to the source electrode is larger than that of the side wall close to the drain electrode; and the side wall is taken as a mask, heavy doping and annealing process are conducted to form the source electrode and the drain electrode, the distance between doped ion of the drain electrode and a channel is reduced, and the distance between doped ion of the source electrode and a liner is increased. In the invention, a longitudinal electric field in the channel of the drain electrode is improved on one hand, and the current of the liner is increased, and on the other hand, the leaking speed of accumulated current carriers is reduced from the source electrode, so that the read-in speed of the floating body effect storage unit is improved.

The invention discloses a mildew-proof microcapsule for bamboo wood and a preparation method of the mildew-proof microcapsule. The mildew-proof microcapsule comprises the following components in parts by mass: 1 part of a core material, 0.5-3 parts of a wall material, 0.8-1.5 parts of an emulsifier, 0.2-1.5 parts of a dispersing agent and 0.2-1.5 parts of an acid catalyst, wherein the core material comprises, in parts by weight, 3 to 6 parts of triazole bactericide and 0.8 to 1.5 parts of organic solvent; and the wall material is amino resin. The preparation method comprises the following steps: mixing and stirring the triazole bactericide and the organic solvent to obtain the core material; and mixing the core material and the emulsifier in the amino resin, adding the dispersing agent, carrying out heating for emulsifying to obtain a water-in-oil emulsion, adding the acidic catalyst into the water-in-oil emulsion, and carrying out an in-situ copolymerization reaction to form a microcapsule wall coating system, thereby obtaining the mildew-proof microcapsule. The mildew-proof microcapsule has the advantages of small particle size, excellent anti-mildew effect, good thermal stability and capability of slowing down the leakage rate of the core material.

The invention relates to the field of metal hoses, in particular to a natural gas conveying anti-explosion metal hose, and aims to solve the problems that an existing metal hose is low in strength andhigh in flow speed. The natural gas conveying anti-explosion metal hose comprises a metal hose body, wherein a fixing set of a flange and a loose flange is arranged on one side of the metal hose body; a butt welding flange is arranged on the other side of the metal hose and used for fixing; the metal hose is covered with a steel belt of a multi-layer structure; the two ends of the metal hose andthe two ends of the steel belt are fixed through cooperation of metal nipples and pressing clamp rings; and the metal hose is wound with a reinforcing ring. According to the natural gas conveying anti-explosion metal hose, the structure of an existing metal hose is optimized. The reinforcing ring is designed in the metal hose, so that the strength of the metal hose is improved, and the double anti-explosion effect of the metal hose is achieved. Meanwhile, the structure that the an existing metal hose is wound with a steel belt is optimized, all layers of the steel belt with which the outer layer of a corrugated pipe is wrapped are in staggered contact through the change of the winding sequence, and generation of friction static electricity is restrained.

This invention relates to the process of a kind of explode restrain material. chemical composition of it includes Si 0.1-0.6,Fe 0.2-0.7,Cu 0.05-0.1,Mn 0.6-1.2,Zn 0.05- 0.1,Ti 0.03-0.12,Na 0.02-0.07,and Al the rest .the process includes steps as follows: melt, de-sludge and de-airing, make body, milling, first anneal, hot press, cold press, second anneal, stamp to open the sew, tension.

The invention relates to the technical field of refrigerated warehouse equipment, in particular to a translation door provided with a cold insulation bridge aluminum alloy composite door frame. The translation door comprises a warehouse plate, a movable door sheet and a sealing strip; the movable door sheet is arranged on the warehouse plate; an aluminum alloy door frame is arranged on the warehouse plate, and is located between the warehouse plate and the movable door sheet; a thermal insulation line cover plate made of PVC plastics is arranged on the aluminum alloy door frame and is located at one end, far from the warehouse plate, of the aluminum alloy door frame; and the sealing strip is located between the aluminum alloy door frame and the movable door sheet. When the translation door provided with the cold insulation bridge aluminum alloy composite door frame is in use, through a baffle extending outwards on the thermal insulation line cover plate, the baffle is in contact with the sealing strip, that is on the condition that the sealing strip and the aluminum alloy door frame are sealed, the baffle is in contact sealing with the sealing strip, so that the thermal insulation property of the refrigerated warehouse is ensured, and during leakage, a passing path of cold air in the refrigerated warehouse is lengthened, so that the cold air leakage speed is reduced.

The invention discloses a ceramsite sand preheating and discharging device which comprises a discharging device, a preheating device is arranged at the bottom of the discharging device, a rotary kiln is arranged at the bottom of the preheating device, the preheating device comprises a mixing device, and a heat preservation device is arranged outside the mixing device. According to the ceramsite sand preheating and discharging device and the discharging and preheating method, the preheating device and the discharging device are arranged to control the feeding amount of materials, hot air in the rotary kiln enters the mixing device, the heat preservation device delays the heat leakage speed of equipment through heat circulation and water circulation, and under the action of the stirring device, the falling speed of the materials is deferred; the stirring frequency is increased, the preheating time of the materials is prolonged, the materials are preheated by utilizing redundant heat generated during working of the rotary kiln, the heat utilization rate is increased, the energy consumption is reduced, and the problems that traditional preheating equipment is low in heat utilization rate and high in energy consumption and does not conform to the green and environment-friendly production concept are solved.

The invention provides a labyrinth type piston ring. Two small blind holes of equal size are symmetrically and evenly distributed at the two ends of an opening of an outer ring surface of the piston ring and are used when the piston ring is mounted; a seal at the opening of the piston ring adopts a manner that teeth at the two ends of the piston ring are mutually meshed; the sizes of radial meshing clearances among the teeth at the two ends of the piston ring are equal to the sizes of clearances at an opening of the existing piston ring, and the radial meshing clearances of the teeth at the two ends of the piston ring are far greater than circumferential meshing clearances of the teeth at the two ends of the piston ring; the teeth of the piston ring can be of equal height and equal width, of equal height and different widths, of different heights and equal width, or of different heights and different widths; the sizes of the radial meshing clearances of the teeth at the two ends of the piston ring are equal; and the more the number of the meshing teeth of the piston ring is, the better the seal is. Thus, the labyrinth type seal is formed by the radial meshing clearances and the circumferential meshing clearances of the mutually-meshed teeth at the two ends of the piston ring; and since an oil film formed by lubricating oil exists among a piston, a cylinder and the piston ring, a compound seal is formed by the oil film seal and the labyrinth type seal and the function of sealing the piston ring is fully realized.

The invention relates to the technical field of high-pressure oil pipes, in particular to a high-pressure oil pipe with a composite structure. The high-pressure oil pipe comprises a double-layer oil pipe and two joints, wherein the double-layer oil pipe comprises an inner-layer oil pipe and an outer-layer sleeve pipe, upset heads are arranged at the two ends of the inner-layer oil pipe, the upsetheads are arranged in the joints, the outer-layer sleeve pipe sleeves the inner-layer oil pipe, the two ends of the outer-layer sleeve pipe are connected to the two joints in a sleeving mode correspondingly, the outer-layer sleeve pipe is a high-pressure steel wire braided rubber pipe, the outer-layer sleeve pipe is clamped on the joints through clamps sleeving on the outer-layer sleeve pipe, anda filling space is pre-arranged between the outer-layer sleeve pipe and the inner-layer oil pipe. By arranging the filling space between the inner-layer oil pipe and the outer-layer sleeve pipe, the filling space is filled with material with different properties, so that the high-pressure oil pipe suitable for different environments can be obtained.

The invention provides a truck anti-theft box capable of quickly stopping damage. The truck anti-theft box comprises a box body, a pumping mechanism, a flow slowing mechanism and a warning mechanism are arranged in the box body, the pumping mechanism comprises two side plates symmetrically installed on the inner top wall of the box body, an assembling bin is slidably connected between the two side plates, side wings are integrally formed on the tops of the two sides of the assembling bin, a plurality of rigid springs are fixedly installed between the two side wings and the corresponding side plates, an oil storage bag and two liquid storage boxes are arranged in the assembling bin, the two liquid storage boxes are symmetrically distributed on the two sides of the oil storage bag, and linkage devices are arranged between the oil storage bag and the two liquid storage boxes. When a fuel tank is damaged, a fuel delivery pump can pump fuel into the oil storage bag through a hose and a fuel inlet pipe, fuel leakage is reduced, loss of a vehicle owner is reduced, meanwhile, a stepping motor drives a lifting plate to move upwards through a ball screw to lift the position of fuel which is not leaked, and an alarm can give out alarm sound to remind the vehicle owner to pay attention.

The invention relates to an anti-explosion and decontamination integrated treatment system used for suspected biochemical explosives. The system comprises a chemical-defense anti-explosion storage and transportation tank, and is characterized in that the system further comprises a decontamination treatment device, a tank opening locking mechanism assembly of the chemical-defense anti-explosion storage and transportation tank is connected at the opening part of a tank body and the opening part of a tank cover in a sleeving manner at the same time, a pressure-reducing unloading assembly and an emergency unloading assembly of a pressure-reducing unloading cleaning assembly of the chemical-defense anti-explosion storage and transportation tank are connected with the top of the tank body in a sealed manner, and a cleaning assembly communicates with the bottom of the tank body in a sealed manner; and a harmful gas and liquid inlet of the decontamination treatment device is connected with a discharge port of the chemical-defense anti-explosion storage and transportation tank in a sealed manner, an outlet is discharged to the outside, a decontamination liquid inlet of the decontamination treatment device is connected with a decontamination liquid storage tank in a sealed manner, and a decontamination liquid outlet of the decontamination treatment device is connected with a filling port of a primary decontamination assembly, a filling port of a secondary decontamination assembly and a filling port of the chemical defense anti-explosion storage and transportation tank in a sealed manner.

The invention provides a method for increasing the writing speed of a floating body effect storage unit and an intermediate transitional semiconductor device, belonging to the technical field of semiconductor manufacturing. The core of the invention is as follows: when a side wall material is deposited, an included angle between the introduction direction of reactant plasma and the surface of a substrate in a source position is less than 90 DEG, and an included angle between the introduction direction of the reactant plasma and the surface of a substrate in a drain position is more than 90 DEG; the side wall material is etched, side walls are formed at two sides of a gate, and the width of the side wall close to a source is more than that of the side wall close to a drain; taking the side walls as masks, heavy doping and annealing processes are carried out to form the source and the drain, and a distance between doped ions of the drain and a channel is closer and a distance between doped ions of the source and the channel as well as the substrate is further. According to the invention, on the one hand, the longitudinal electric field in the drain channel is enhanced and the substrate current is increased, on the other hand, the leakage speed of accumulated carriers from the source is reduced, and therefore the writing speed of the floating body effect storage unit is increased.

The invention discloses a casting method and tool of a crosshead slider white alloy of a large low speed marine diesel engine. The casing method includes the steps that an L-shaped tire plate integrally connected by a long plate and a short plate and a crosshead slider are placed on a casting platform, the inner surface of the long plate is opposite to a separated cavity the front of the crossheadslider, the inner surface of the tail part of the short plate is connected with one end face of the crosshead slider in a close contact mode, a baffle plate and a baffle block are placed on the tailpart of the long plate of the tire plate and combined with a bayonet for mounting and positioning, the screw rod part of a fastening rod is matched with a screw hole of the baffle block, and the frontend of the fastening rod is pressed against the baffle plate; the inner surface of the long plate of the tire plate, the inner surface of the short plate of the tire plate, the front face of the crosshead slider and the upper face of the casting platform form a combined cavity; and white alloy melt is cast for forming, after the white alloy melt is cooled to be integrally solidified with the front face of the slider, a depressurized groove quickly releases internal fluid pressure to slow down theleakage speed, the liquid white alloy is solidified rapidly in the depressurized tank at the sametime, and thus the liquid white alloy is prevented from leaking to the exterior of the tire plate. Decladding, pore, slag inclusion and other defects are effectively avoided, and the combined qualityof the white alloy is increased.

The invention discloses a novel basketball structure. The problems are solved that for an existing basketball structure, when a basketball is used for a long time, an air nozzle is easily damaged andis inconveniently replaced. The structure comprises an inner liner, a winding layer sleeves the outer side of the inner liner, and a middle liner sleeves the outer side of the winding layer through glue strips; skin sleeves the outer side of the middle liner, an anti-skid assembly is fixed to the outer side of the skin, and a circular pipe is fixed to the tops of the inner liner, the winding layerand the middle liner; an annular sealing groove is formed in the top of the inner side of the circular pipe, a sealing sleeve is installed at the top of the inner side of the annular sealing groove,and a limit ring is fixed to the lower portion of the inner side of the circular pipe; an air nozzle is fixed between the inner side of the limit ring and the inner side of the circular pipe, and a slide block is fixed to the middle of the inner side of the air nozzle. The novel basketball is novel in structure, ingenious in design and convenient to operate, through a plug, not only can the effectof protecting the air nozzle be achieved, but also the speed of air leakage can be decreased, and through the limit ring, the situation can be avoided that when the air nozzle is replaced, the air nozzle is deeply inserted in the basketball through extremely large force, and accordingly application is influenced.

The white alloy casting method and tooling of the crosshead slider for large low-speed marine diesel engine is to put the L-shaped tire board and the crosshead slider integrated with the long plate and the short plate on the casting platform, and the inner surface of the long plate slides with the crosshead. The front of the block is separated from the cavity, and the inner surface of the tail of the short board is in contact with one end of the cross head slider. The baffle and the stopper are placed on the tail of the long board of the tire board and combined with the bayonet for installation and positioning, and the screw rod of the fastening rod The part is matched with the screw hole of the block, and the front end of the fastening rod is pressed against the baffle. The inner surface of the long plate, the inner surface of the short plate, the front of the crosshead slider and the top of the casting platform form a combined cavity; the white metal melt is cast and formed, and cooled to solidify with the front of the crosshead slider. The decompression groove quickly releases the internal liquid pressure to slow down the leakage speed, and at the same time, the liquid white metal quickly solidifies in the decompression groove, thereby preventing leakage to the outside of the tire plate. Effectively avoid shelling, porosity, slag inclusion and other defects, and improve the bonding quality of white metal.