34results about How to "Guaranteed to break" patented technology

The invention discloses an explosion-proof valve of a lithium ion storage battery with a simple structure and high safe reliability, which comprises a valve body (1), a needle body (2) and an explosion-proof film (3). The valve body (1) is provided with a vent hole (4); the needle body is fixedly connected to the upper end of the vent hole (4); a lower surface of the needle body (2) is provided with a conical contact probe (5); the explosion-proof film (3) is arranged at the lower end of the vent hole (4), and is hermetically assembled with the valve body (1); and the conical contact probe (5) points to the explosion-proof film (3) which is prepared from ethylene-propylene diene rubber as a raw material, has good elasticity and larger thickness, and is difficult to crack. Compared with the existing explosion-proof valve prepared from metal materials such as a copper foil, an aluminum foil and the like, the explosion-proof valve of the lithium ion storage battery greatly improves safe reliability of the battery and prolongs the service life of the battery.

The invention provides a coating operation system used for lithium battery production and manufacture. The coating operation system comprises a bottom plate, side plates, an outer barrel box, a coating unit, a flow guide unit, an inner stirring mechanism and an auxiliary mechanism. The coating operation system can solve the problem that a large number of bubbles exist in stirred slurry in the coating process of existing pole pieces, and therefore in the coating process, the bubbles in the slurry are sprayed on the pole pieces, and when drying is conducted through an oven, the bubbles are broken and white circular spots are formed on the pole pieces, active material at the positions are thin, and micro short circuiting is most likely to be caused in the battery charging and discharging process. Meanwhile, the problems that the existing pole pieces are restricted by the slurry flow speed in the coating process, and therefore slurry coating on the pole pieces is not uniform, the transmission route of lithium ions and electrons becomes far in the charging and discharging process after active material partitions at the thick edge positions are pulverized, the battery internal resistanceis increased, polarization is deepened, and the service life and safety of batteries can be influenced are solved.

The invention relates to a measuring method for the tensile and shearing force of a spot-welded joint of friction stir welding and specifically provides a measuring method for the maximum tensile and shearing force of the spot-welded joint of friction stir welding to overcome the problem that measurement results of the maximum tensile and shearing force of a spot-welded joint of friction stir welding is not accurate in a traditional tensile and shearing force measurement method due to influence of additional bending moment. The method comprises the following steps: 1, fabrication of a fixture, wherein an upper support side plate and a lower support side plate are processed, and the length of the upper support side plate is 10 to 20 times thickness of the lap part of a test piece for tensile and shearing testing; 2, assembling of the test piece for tensile and shearing testing, wherein the test piece for tensile and shearing testing is arranged between the upper support side plate and the lower support side plate, and the non-lap parts at two sides of the test piece are respectively provided with a cushion block with thickness identical to the thickness of a sheet material to be welded; and 3, tensile and shearing testing, wherein the assembled test piece for tensile and shearing testing, the fixture and the cushion blocks are clamped on a tensile and shearing testing machine, tensile and shearing testing is carried out on the test piece for tensile and shearing testing at a loading speed of 0.5 to 1.5 mm/min, and a maximum tensile and shearing test load is recorded. The method provided by the invention is used for measuring the maximum tensile and shearing force of the spot-welded joint of friction stir welding.

The invention relates to the technical field of oil and gas drilling, well completion, well cementation or well logging, in particular to an external casing packer. The external casing packer comprises a center pipe, a rubber sleeve and a rubber sleeve fixing ring, the rubber sleeve is arranged outside the center pipe in a sleeving mode, the rubber sleeve fixing ring is fixed to the center pipe and fixedly connected with the two ends of the rubber sleeve, and an annular space is reserved between the rubber sleeve and the center pipe. The rubber sleeve comprises an inner sleeve made of an elastic material which does not expand when encountering liquid and an outer sleeve made of an elastic material which expands when encountering oil, a first flow channel leading to the annular space is formed in the rubber sleeve fixing ring, and a sealing valve element is arranged at an inlet of the first flow channel; and the inner sleeve comprises an inner sleeve body, a radial through hole is formed in the axial center of the inner sleeve body, a fracturing sealing film is arranged at the end, facing the center pipe, of the through hole, and a finger-shaped reed is arranged at the joint of therubber sleeve and the rubber sleeve fixing ring in a surrounding mode. The external casing packer can prevent the rubber sleeve from bursting, tearing and extruding, and the packing effect is improved.

The invention discloses a waterproof and rat-and termite-proof high-flexible mineral insulated fireproof cable and belongs to the technical field of cables. Each conductive element is formed by twisting a plurality of wire cores and comprises a twisted soft copper conductor, a mica tape insulating layer and a mineral insulating layer; and an aluminum bonding waterproof layer, an integrated fire protection layer of a high flame-retardant polyolefin oxygen insulation layer and a ceramic polyolefin heat insulation layer and a rat-and termite-proof outer sheath layer are sequentially arranged outside the conductive elements. The specified fire supply, mechanical shock and water spray line integrity test requirements of BS6387 (the outer diameter of the cable is smaller than or equal to 20mm) or BS8491 (the outer diameter of the cable is greater than 20mm) can be met; and the waterproof and rat-and termite-proof high-flexible mineral insulated fireproof cable has the advantages that field construction and installation are facilitated, the cable has relatively high flexibility, the length and the section of the cable are not limited, and meanwhile, the cable has excellent electric property and mechanical property and excellent waterproof and rat-and termite-proof properties, and is widely applied to power distribution, control and fire extinguishing systems with high fire protectionrequirements.

The invention discloses a single-side degeneration ODB support and an automobile CCB support. Guide grooves with different width and extending to side plates are formed in a top plate of the single-side degeneration ODB support, so that the rigidity of the side, close to the first side plate, of the top plate is less than the rigidity of the other side of the top plate, and when the front end of the ODB support is stressed, the first ends of the guide grooves are prone to be deformed; meanwhile, the rigidity of the guide grooves is decreased due to the existence of degeneration holes, the inclined state of the degeneration holes also enables the guide grooves to be prone to be deformed, the side, close to the first side plate, of a front end region is more prone to be degenerated, so thatthe front end region of the ODB support is integrally deformed towards one side of the first side plate, the external impact force is absorbed, and the energy absorption effect is achieved; and the guide grooves can achieve a certain partition effect while the front end region of the support is deformed, so that the possibility of the deformation of a rear end region of the top plate is reduced, the rigidity of the rear end region is guaranteed, and the energy absorption and support rigidity requirements are met when the overall structure is stressed.

The invention provides a glass processing protective film capable of being directly cut and a preparation method of the glass processing protective film capable of being directly cut. The protective film comprises a PET film 1, a glue layer 2, a photohardened layer 3, an elastic bonding layer 4 and a bottom paper layer 5. The glass processing protective film capable of being directly cut disclosedby the invention has better protection performances, can effectively prevent the generation of debris, fragments and micro-cracks in the glass processing process, and can be directly cut on the basisof film covering without residues.

The invention discloses a waste cable insulating layer stripping device. The stripping device includes a fixed cylinder having two open ends, a knife cylinder having two open cylinders and a knife rod. The inner diameter of one end of the fixed cylinder is greater than that of the other end. The cylinder wall of the end having the comparatively greater inner diameter of the fixed cylinder is provided with two through holes penetrating through the outer wall and the inner wall of the fixed cylinder and arranged in radial symmetry. The inner walls of the through holes are provided with first threads. A thread part in thread fit with the first threads and a deformation part whose diameter is smaller than that of the thread part sleeve the outer wall of the knife cylinder. The inner wall of the knife cylinder is provided with second threads. The knife rod is provided with third threads fitting with the second threads. An end adjacent to the deformation part of the knife rod is equipped with a diamond-shaped blade. According to the invention, in the premise that the cutting edge of the blade is not in close contact with a metal wire core, the insulating layer is cut off completely and the labor strength of a manual way of using a wire stripper or a cutting blade for treating the insulating layer directly is reduced. Besides, the stripping device provided by the invention is simple and convenient in operation, low in use cost and high in safety performance.

The invention discloses a waste cable insulating layer stripper comprising a fixed cylinder, a knife cylinder, a knife bar and a guide ring. The internal diameter of one end of the fixed cylinder is greater than the internal diameter of the other end. The cylinder wall of the fixed cylinder is provided with two through holes. The internal walls of the through holes are provided with first threads. The external wall of the knife cylinder is sleeved by a thread part which can be matched with the first threads in a threaded way and a deformation part of which the diameter is less than the diameter of the thread part. The internal wall of the knife cylinder is provided with second threads. The knife bar is provided with third threads which can be matched with the second threads in the threaded way. A rhombic blade is installed on one end of the knife bar. The guide ring is installed at one end of the larger internal diameter of the fixed cylinder. The ring surface of the guide ring fixedly provided with arc sheets having inclined surfaces. The arc sheets and the blade are arranged in a staggered way. The insulating layer can be completely cut through and the insulating layer and a wire core can be rapidly separated so that the manual labor intensity of using wire stripping pliers or cutting blades to directly process the insulating layer can be reduced, and the device is easy and convenient to operate, low in use cost and high in safety performance.

The present invention relates to a stack (1) of web material for hygiene products, for use in a dispenser, comprising at least one folded continuous web material (2, 3) and comprising a first connector (11a) and a second connector (11b), being adapted for interconnection of the first end surface (5) of the stack to a second end surface (6) of another, similar stack, and/or of the second and surface (6) of the stack to a first end surface (5) of another, similar stack. The first connector (11a) comprises a first generally smooth connection surface consisting of a first material, and thesecond connector (11b) comprises a second generally smooth connection surface consisting of a second material; said first and second materials having such properties that, upon bringing said first and second smooth surfaces into contact with each other, the surfaces attach to each other by surface adhesion of the kind where the surfaces are repeatedly removable from and re-attachable to each other while leaving the surfaces substantially unaltered, whereby a connection between a first/second connector of the stack and a second/first connector of a similar stack having a connection strength in a plane including the connection surfaces sufficient to pull the web of the interconnected stacks is accomplished.

The invention relates to a small seed peanut sheller. A shelling roller is provided with a shelling rotating part, the shelling rotating part comprises a shelling disc and a plurality of beating plate U-shaped supports, the beating plate U-shaped supports are fixed on the periphery of the shelling disc at equal angles in the radial direction, and a sine curve flexible beating plate is inserted into each beating plate U-shaped support; each sine curve flexible beating plate comprises a batten-shaped base and a sine curve-shaped beating plate component extending from the base to the outer end, and the beating plate component comprises an iron lining and a flexible coating layer coating the outer side of the iron lining; adjusting bolts penetrate through the bottom surfaces of the U-shaped supports to abut against the bases and can adjust the extending length of the sine curve flexible beating plates; a concave grate comprises a pair of arc-shaped side edges, grate bars which are sequentially embedded and mounted in insertion openings preset in the side edges at intervals, and hanging lugs located at the two ends of the side edges; U-shaped guide rails are used for supporting the hanging lugs; and guide rods are welded and fixed to the U-shaped guide rails, and the concave grid can be horizontally pulled out or inserted into the U-shaped guide rails by pulling the concave grid in the axial direction of the guide rods.

The invention discloses an intelligent door lock system adopting an inserting type communication card. The system comprises a door lock casing and an inductive control part. The inductive control partcomprises an MCU (microprogrammed control unit), a door drive module, a door lock, a scanning module, a wireless communication module, a cloud server, a cloud storage recognizer and a mobile terminal. A round through hole is formed in the center of a front panel of the door lock casing, the scanning module is mounted in the casing and located behind the round through hole, and a round glass plateis fixed at the round through hole. The door lock casing contains an interlayer in which a protection circuit is arranged. The protection circuit is a lead with the diameter of 0.02 mm. The lead is continuously fixed on the inner side of the front panel of the casing in an S shape and closely attached to the inner wall of the glass plate. The system has the advantages of being high in safety performance, simple in structure, reasonable in design, convenient to use, good in use effect and the like.

The invention relates to a small breeding sheller. A shelling rotating part comprises a shelling disc and a plurality of beating plate U-shaped supports which are fixed around the shelling disc at equal angles in the radial direction, an L-shaped supporting plate is arranged in each beating plate U-shaped support, and the length of the end, located in the width of a U-shaped groove of each beating plate U-shaped support, of each L-shaped supporting plate is smaller than the width of the U-shaped groove; a rubber flexible beating plate is clamped by each L-shaped supporting plate and each U-shaped support; an adjusting bolt penetrates through the bottom surface of the corresponding U-shaped support to abut against one end of the corresponding L-shaped supporting plate, and the extending length of each rubber flexible beating plate can be adjusted; each fastening bolt is screwed with a screw hole in one side surface of the corresponding U-shaped support, and each rubber flexible beating plate is pressed and fixed by extruding the corresponding L-shaped supporting plate; a concave plate sieve comprises a pair of arc-shaped side edges, sieve pieces which are sequentially embedded into wedge-shaped bayonets preset on the side edges at intervals and have trapezoidal sections, and hanging lugs located at the two ends of the side edges; U-shaped guide rails are used for supporting the hanging lugs; guide rods are arranged between the hanging lugs and the U-shaped guide rails; and a sieve body can be horizontally drawn out/inserted into the U-shaped guide rails by drawing the concave sieve along the axial direction of the guide rods.

The invention belongs to the field of black liquor treatment processes in the pulp industry, and particularly relates to a process for treating pulp black liquor by using viscose wastewater. The process comprises the following steps: carrying out shoving on black liquor twice by a black liquor shoving machine to obtain dilute black liquor, then introducing the dilute black liquor into a first sedimentation tank, then sequentially introducing the dilute black liquor into a first regulating tank, a multi-bucket sedimentation tank, a second regulating tank, a second sedimentation tank, a third sedimentation tank and a reactor, and finally introducing the dilute black liquor into a sludge collecting tank after the dilute black liquor is settled in a final sedimentation tank. The viscose wastewater is added into the first adjusting tank, and the fiber wastewater is added into the second adjusting tank, so that the purpose of treating waste with waste is realized. Then a polyacrylamide solution is added into the final sedimentation tank, and the final sludge is pumped into a sludge collection tank through a pump under the flocculation action of the polyacrylamide solution. According to the process disclosed by the invention, the COD of the pulp black liquor can be reduced to the emission standard, and the generated precipitate can be incinerated through a boiler, so that the secondary pollution of the precipitate is eliminated.

The invention discloses a staggered overlapping cotton baling method, and belongs to the field of cotton baling. In the staggered overlapping cotton baling method, adjacent packing sections are arranged in a staggered overlapping manner, meanwhile, overlapping positioning layers are arranged at the overlapping parts, and when columnar cotton is baled to the integrated overlapping positioning layers, the overlapping positioning layers are separated. In the process, wall breaking balls of glue breaking string balls can come out of glue breaking layers by breaking walls under the action of force,and it is effectively guaranteed that the glue breaking layers can certainly break during separation to make inside glue flow out; and then, the glue breaking layers are bonded to wool tufts on the other sides of the baling sections. The wool tufts can effectively improve the surface roughness of fluff base layers and meanwhile effectively increase the contact area of the fluff base layers and the glue breaking layers, so that the baled cotton is more tightly connected, the situation that a cotton baling film locally cracks in bonding and then the cotton scatters is not likely to occur, and thus the baling effect of the cotton is effectively improved.

The invention discloses an automobile plug-in unit capable of avoiding accidental damage of tires by utilizing a biological structure, and relates to the technical field of automobile parts. The automobile plug-in unit comprises a mounting block, wherein a suspension fastening device is mounted at the top of the mounting block, a clamping and fastening device is mounted on one side of the mountingblock, a biological simulation box is rotatably connected to one side of the mounting block through an elastic rod, a vibration receiving rod and a vibration transmission rod are symmetrically mounted on the side, which is away from the elastic rod, of the biological simulation box, and a smooth ball is fixedly connected to one end of the vibration receiving rod. According to the automobile plug-in unit capable of avoiding accidental damage of tires by utilizing the biological structure, the problem of bumping of a road surface with a large slope can be thoroughly eradicated, subsequent vehicles are prevented from generating vibration due to the same reason, clamping and fastening can be conducted according to different sizes of vehicle axles, the fixing means are diversified, the problemof infirm fixing is avoided, the size of vibration transmitted to the vehicles can be controlled, and vibration generated when the vehicles pass through large-gradient road sections is effectively utilized.