909results about How to "Increase the gap" patented technology

The invention provides a battery which comprises a roll core, the roll core comprises a positive plate, a diaphragm and a negative plate, the positive plate, the diaphragm and the negative plate are sequentially stacked and wound to form the roll core, the roll core is provided with a straight area and arc angle areas, and the arc angle areas are located at the two opposite ends of the straight area; the positive plate is provided with a first surface and a second surface which are opposite, the negative plate is provided with a third surface and a fourth surface which are opposite, the first surface and the third surface face the inner side of the roll core, and the second surface and the fourth surface face the outer side of the roll core; the negative plate comprises a negative current collector and negative active layers positioned on two opposite surfaces of the negative current collector, and the negative active layers comprise carbon-silicon composite materials; the positive plate is provided with a plurality of concave-convex structures, the concave-convex structures are positioned in at least one of the arc angle region and the straight region, each concave-convex structure comprises a concave part which is inwards concave from the first surface and a convex part which is outwards convex from the second surface, the concave parts and the convex parts are correspondingly arranged, and the concave parts and the fourth surface are correspondingly arranged. The battery disclosed by the invention is relatively high in safety.

The invention belongs to the technical field of welding clamping mechanisms, and particularly relates to a seamless steel pipe welding device for mechanical equipment machining, which comprises a machining platform, a sliding seat is slidably mounted on the machining platform, a supporting plate is arranged above the sliding seat, a lifting plate is arranged on the side wall of the supporting plate, and a sand plate slidably sleeves the lifting plate. A welding gun is further arranged on the machining platform. Two clamping mechanisms are arranged on the machining platform and used for clamping and fixing a steel pipe. A vertical grinding mechanism is arranged on the supporting plate. By arranging the vertical grinding mechanism and the transverse grinding mechanism, burrs on a steel pipe can be ground and removed in the horizontal direction and the vertical direction at the same time, and the seamless welding effect is improved; and by arranging the washing mechanism, water can be sucked in a reciprocating mode and sprayed to the sand plate, so that the burr removing work is smoother, and the ground burrs can be washed away.

The invention provides a battery cell and electric equipment, the battery cell comprises a shell and an electrode assembly, and the electrode assembly is accommodated in the shell; the shell comprises a first wall and a second wall which are oppositely arranged in the thickness direction of the battery cell, the first wall comprises a first sub-wall, a second sub-wall and a first connecting wall, the second sub-wall protrudes out of the first sub-wall in the direction away from the second wall, and the first connecting wall is connected with the first sub-wall and the second sub-wall; the distance between the first sub-wall and the second sub-wall is H1 along the thickness direction of the battery cell, and H1 is more than 0mm and less than or equal to 1.5 mm; and the included angle between the first connecting wall and the thickness direction of the battery cell is theta1 which is more than 0 degree and less than or equal to 45 degrees. According to the technical scheme, the fitting property of the shell and the electrode assembly can be good, the gap between the first connecting wall and the electrode assembly is small, the energy density of the battery cell can be improved, the electrode assembly is not prone to shaking in the shell, and the stability of the battery cell is good.

The invention relates to a preparation method of paper, in particular to a preparation method of breathable paper applied to a packaging material. Chitosan and oxidized sodium alginate are subjected to a Schiff base reaction, so that a more open and loose coating layer is formed on the fiber surface, gas circulation is facilitated, and the air permeability of the paper is improved to a certain extent. And a covalent bond formed by Schiff base reaction enhances the binding force between chitosan and oxidized sodium alginate, so that the coating layer is more firmly attached to the surface of wood pulp fiber. The enhanced binding force is favorable for improving the mechanical properties such as tensile strength and breakage resistance of the paper, and an imine bond generated by the Schiff base reaction has higher chemical stability and can resist the influence of changes of external environments such as humidity, temperature and the like on the coating layer, so that the long-term stability of the performance of the paper is kept.

The utility model discloses a peripheral pump capable of realizing gas-liquid mixed transportation, which comprises a pump body, a pump cover is mounted at one end of the pump body through a bolt, an impeller is mounted at one end of the pump body and positioned on the inner side of the pump cover, and a rotating shaft is mounted at the center of one side surface of the impeller. When gas and liquid form blockage between the impeller and the pump body due to impurities, the pressure of a gap between the impeller and the pump body is increased, and the impeller extrudes the sleeve under the pressure of the gas and the liquid and slides on the rotating shaft, so that the gap between the impeller and the pump body is enlarged, the pressure caused by blockage is offset, and the vortex pump normally conveys; when the vortex pump stops running, the sleeve extrudes the impeller to slide on the rotating shaft under the action of the spring, and the sleeve can just push the impeller to the initial position under the limitation of the length of the rotating shaft, so that the aim of automatically adjusting and guaranteeing the conveying efficiency when the vortex pump is blocked is fulfilled.

The heat bridge breaking structure comprises a heat preservation sandwich layer located in the middle, an outer acanthus and an inner acanthus are arranged on the two sides of the heat preservation sandwich layer respectively, and the heat preservation sandwich layer is connected with the outer acanthus and the inner acanthus through a plurality of connecting assemblies for supporting the outer acanthus and the inner acanthus. According to the heat insulation bridge structure of the sandwich heat insulation external wall panel and the construction technology, the outer acanthus, the heat insulation sandwich layer and the inner acanthus are matched to form a formwork with an inner cavity and an outer cavity, concrete is poured into the cavities to form an outer acanthus wall and an inner acanthus wall, the outer acanthus and the inner acanthus are supported through the connecting assemblies, and the stable cavities are formed; the possibility that gaps between the heat preservation sandwich layers are increased or dislocation occurs due to the fact that the heat preservation sandwich layers are disturbed by concrete is reduced, and then the possibility that linear heat bridges are formed due to the fact that the effective thickness of the dislocation part heat preservation plate is reduced is reduced.

The utility model discloses a battery box body, a battery and a power utilization device, the battery box body comprises a first box body, a second box body, a first sealing piece and a first fastening piece, the first box body and the second box body are in sealing connection to form a sealing cavity, the first box body comprises a first sealing surface, and the second box body comprises a second sealing surface; the first sealing face and the second sealing face are matched to form a sealing interface, and the first sealing piece is arranged on the sealing interface to seal the first sealing face and the second sealing face. The first fastener penetrates through the first sealing face and the second sealing face to connect the first sealing face and the second sealing face to clamp the first sealing piece, so that the first sealing face and the second sealing face are connected in a sealed mode, the first fastener is completely located on the outer side of the sealing cavity, and the first fastener is located on the side, away from the sealing cavity, of the first sealing piece in the extending direction of the sealing interface. And when a certain first fastener or a small number of first fasteners fail, the sealing performance of the battery box body is still maintained, the failure risk is reduced, and the working safety is improved.

The invention relates to the technical field of flue gas purification, in particular to a flue gas purification system with carbide slag as a desulfurizer, which comprises a desulfurization cylinder, a gas inflow self-adjusting assembly is arranged in the middle of the inner side of the desulfurization cylinder, a spraying assembly is fixedly connected above the gas inflow self-adjusting assembly, a separation assembly is fixedly connected to the bottom of the inner side of the desulfurization cylinder, and the separation assembly is fixedly connected to the bottom of the inner side of the desulfurization cylinder. A cleaning assembly is arranged on the outer side of the separation assembly, the top of the desulfurization cylinder is communicated with an exhaust pipe, the cylinder wall of the desulfurization cylinder is communicated with four communicating pipes, one ends of the four communicating pipes are communicated through an annular pipe, and a mounting frame is integrally formed between the inner walls of the desulfurization cylinder. According to the improved flue gas purification system, the speed of the flue gas entering the desulfurization cylinder is adjusted in a self-adaptive mode through the gas inflow self-adjusting assembly, meanwhile, the gas inflow self-adjusting assembly can synchronously adjust the spraying amount, and under mutual cooperation, insufficient reaction caused by the too high flue gas entering speed can be avoided.

The efficient cleaning system comprises a cleaning box with the section being in a concave shape with an upward opening, the cleaning box is rotationally connected with a rotating shaft and two conveying rollers in a penetrating mode through bearings, the section, located in the cleaning box, of the rotating shaft is in interference fit with a convex roller, and a cleaning mechanism is arranged in the cleaning box; the cleaning mechanism comprises a cavity formed in the bottom wall of the cleaning box, two mixing cavities and two passing grooves in the side wall, the two mixing cavities communicate with the cavity, a sliding plate is slidably connected into the cavity in a sealed mode, and a sliding sleeve is fixedly connected to the cleaning box in a sealed and penetrating mode; one end of the sliding sleeve penetrates and extends into the cavity and is fixedly connected with the upper surface of the sliding plate. The textile cleaning device has the advantages that the textile cleaning effect is better, the efficiency is higher, thread residues and impurities can be prevented from being secondarily attached to the textile, the filter screen can be self-cleaned and monitored, blockage is avoided, and normal operation is guaranteed.

The pressurization and yield increase device comprises a first natural gas pipeline and a second natural gas pipeline which are obliquely arranged, the first natural gas pipeline is located on the upper side of the second natural gas pipeline, and a plurality of gas holes are formed in the side portion of the first natural gas pipeline and the side portion of the second natural gas pipeline. A fan is arranged at an upper opening of the natural gas pipeline I; the natural gas collecting device has the technical effect of improving the natural gas collecting capacity.

The invention relates to the technical field of spring machining, in particular to spring machining equipment and an operation method.The end of a connecting rod is provided with a double-head conical rod, the double-head conical rod is internally provided with a pair of insertion plates arranged in a radial telescopic mode, and the insertion plates can extend to the outer side of an inner cavity of the double-head conical rod in a telescopic mode; the spring forming device has the beneficial effects that positioning of the circle center of the limiting piece is achieved by arranging the positioning column, the limiting piece is matched with the forming assembly, the size adjusting convenience of the spring is improved, meanwhile, the inserting plates driven in the radial direction in a telescopic mode are arranged, inserting connection of the formed spring is achieved, and the spring forming efficiency is improved. The purpose of pulling the spring to extend is achieved through longitudinal stretching and retracting of the inserting plate, in this way, the gap between the first spring coil and the second spring coil can be enlarged, notches are avoided, meanwhile, by matching with inclination of the connecting rod and the double-end conical rod, the cut reset spring slides down directionally, accurate limiting blanking is achieved, and the influence on a forming assembly during blanking is avoided.

The invention relates to the field of medical instruments, in particular to a resectoscope. The resectoscope comprises an inner sheath assembly, an outer sheath assembly and an operation assembly, the side face of the end, away from an outer sheath body, of an outer sheath tube protrudes outwards to form a protruding belly, a plurality of through holes are evenly formed in the protruding belly, and the tail end of the inner sheath tube is connected with a tube head extending to the outer side of the outer sheath tube. Besides, corrugations are arranged on the outer sheath tube, a first connector and a second connector are arranged on the upper side and the lower side of the outer sheath body respectively, the inner sheath body and the outer sheath body are connected through a first quick release assembly, the operation assembly comprises a first grip and a second grip, and quick disassembly and assembly are achieved through the second quick release assembly and a third quick release assembly. The effects of improving surgical operation flexibility, reducing tissue damage and simplifying instrument cleaning and maintenance are achieved.

The invention relates to the technical field of carton drying, in particular to a drying device for rapid carton production, which comprises a carton drying box and a conveying mechanism, and the outer wall of one side of the carton drying box is fixedly connected with the outer wall of one side of the conveying mechanism; the carton drying box has the beneficial effects that a guide rod enters the interior of a rail groove and then slowly moves upwards along a rail of the rail groove, at the moment, a fixing groove drives paperboards to move upwards on an equipment shell, the equipment shell can be lifted in a staggered mode in the carton drying box, gaps between the paperboards are increased, and the paperboards can be conveniently dried. According to the paperboard drying device, heat flow can enter gaps of paperboards more easily, hot air can penetrate into the gaps of the paperboards more easily due to the increase of the gaps, and therefore the paperboards can be dried more directly and effectively, and the problem that drying is uneven due to the fact that the paperboards are stacked too densely is solved; correspondingly, the paperboards arranged in a staggered mode can be heated by heat flow more comprehensively, and therefore the drying efficiency is remarkably improved.

The invention discloses a power cable pay-off device based on new energy, relates to the technical field of cable pay-off devices, and aims to solve the technical problem that an insulating layer deforms due to the fact that pressure and tension borne by a cable close to a winding roller are increased when the cable is wound in a laminated mode. The two sides of the top of the bottom plate are fixedly connected with fixing frames through bolts correspondingly. According to the cable winding device, by arranging the spiral guide groove, a cable can be wound on the winding roller in order, the cable moves in the guide frame through cable winding to drive the transmission wheel to rotate, in the process, the cable winding disorder phenomenon can be prevented, and meanwhile when the cable is wound on the two sides of the winding roller through the guide frame, the cable winding speed is increased. Through the gravity of the cable and the torque of the winding roller, the transmission rod moves, one end of the buffer rod is driven to tilt, the gap between the winding roller and the cable is enlarged, then the situation that the cable close to the winding roller is extruded and an insulating layer deforms in the cable winding process is avoided, and the reliability of the device is improved.

The invention provides a diaphragm with a gradient bulk density coating, a preparation method of the diaphragm, a battery and electric equipment, and relates to the technical field of diaphragms. The diaphragm with the gradient bulk density coating comprises a base material and a coating, and the coating is arranged on at least one side of the base material; the coating is prepared from the following raw materials: aluminum oxide, needle-like boehmite, a dispersing agent, an adhesive, an ether surfactant and water; the coating comprises multiple layers, the mass content of aluminum oxide is reduced layer by layer from the side adjacent to the base material to the side away from the base material, and the mass content of needle-like boehmite is increased layer by layer. And the obtained diaphragm with the gradient bulk density coating has high heat resistance, high wettability and high liquid retention rate.

The ventilation and heat dissipation structure of the dry type transformer comprises a plurality of heat dissipation channels used for heat dissipation of a plurality of pairs of vertical semiconductor chilling plates, each heat dissipation channel is arranged in an annular air channel and surrounds a pair of vertical semiconductor chilling plates, and the heat dissipation channels extend in the direction of the central axis to form channels with the upper ends and the lower ends open. Each heat dissipation channel comprises an insulating plate, a plurality of guide plates and two side plates; one ends of the guide plates are uniformly and fixedly arranged on the two sides of the insulating plate at intervals in the axis direction, the other ends of the guide plates incline upwards in the wind direction and are close to but not in contact with the semiconductor chilling plate, and a first gap for airflow to pass through is reserved; and an exhaust fan is further included and communicates with the openings in the upper ends of the multiple heat dissipation channels. According to the utility model, the heat dissipation channels are arranged on each pair of vertical semiconductor chilling plates, and the guide plates inclined along the wind direction are arranged in the heat dissipation channels, so that air is promoted to circulate along the hot surfaces of the semiconductor chilling plates, and airflow blows to the hot surfaces, thereby improving the heat dissipation effect.

The invention discloses a mold frame opening and closing system for a plastic mold, relates to the field of mold opening and closing, and solves the problem that an existing mold frame is difficult to quickly demold a mold base, the mold frame opening and closing system comprises a fixed plate and mounting plates fixedly mounted at the two ends of the fixed plate, and two symmetrically distributed mounting frames are arranged on the outer side of the fixed plate; pressing templates are fixedly mounted on the inner side of the mounting frame, and four hydraulic rods distributed in a rectangular array are fixedly mounted between the opposite surfaces of the two pressing templates and the two fixing plates respectively; the demolding mechanism is used for performing gas injection demolding on the two mold pressing plates, and the demolding mechanism is mounted between the two mounting frames; according to the demolding mechanism, when the two mounting frames are far away from each other, high-pressure gas can be injected between the two mold pressing plates, the gap between the mold pressing plates and the mold base is increased, the problem that the mold base adheres to the mold pressing plates is solved, and therefore the effect of rapid demolding is achieved.

The invention discloses an auxiliary contact leading-out structural form of a high-voltage direct-current relay, which relates to the technical field of relays, and further comprises a contact leading-out mechanism used for connecting an auxiliary contact to enable the auxiliary contact to move in cooperation with a movable contact, and an auxiliary arc breaking mechanism used for assisting the movable contact and the auxiliary contact in arc breaking, and the movement control mechanism is used for controlling the contact leading-out mechanism to move. The auxiliary contact leading-out mechanism of the relay is changed from a traditional fixed type to a semi-movable type, so that the gap between the movable contact and the auxiliary contact is effectively improved on the premise of not changing the moving distance of the movable contact, the higher the gap is, the easier the arc breaking is, and the reliability of the relay is improved. Meanwhile, when the movable contact moves, the auxiliary arc breaking mechanism can also work synchronously, the arc breaking effect is improved secondarily, meanwhile, the auxiliary arc breaking mechanism can be used for surface treatment of the contact and position adjustment of the auxiliary contact, an additional power source is not needed, and all working states are matched with the moving state of the contact.

The invention belongs to the technical field of textile fabrics, and particularly relates to an ultraviolet-proof antibacterial fabric and a preparation method thereof. The ultraviolet-proof antibacterial fabric comprises a base cloth layer and a modified polyester fabric layer, the modified polyester fabric is obtained by dipping a polyester fabric in a finishing liquid; the finishing liquid comprises a first finishing liquid and a second finishing liquid; the first finishing liquid is prepared from the following raw materials: a carboxymethyl chitosan derivative and polycarboxylic acid; the second finishing liquid is prepared by mixing nano titanium dioxide and absolute ethyl alcohol. According to the invention, the pre-treated polyester fabric is subjected to secondary surface modification by using the finishing liquid, and the durability of the fabric product is remarkably improved by using a covalent grafting mode.

The aromatic basket comprises a bottom basket and a plurality of aromatic baskets, the aromatic baskets are arranged on the bottom basket in a stacked mode, through holes are formed in the bottoms of the aromatic baskets in an array mode, and inner net frames are arranged in the aromatic baskets. The inner net frame comprises a stand column and a partition net plate, the partition net plate is annularly connected to the outer side of the stand column, the partition net plate makes contact with the inner wall of the fragrance basket so that the fragrance basket can be divided into a plurality of containing areas, a plurality of circular ring frames are arranged on the bottom edge of the partition net plate, and gaps exist between the circular ring frames and the bottom face of the fragrance basket. The utility model aims to provide the aroma basket for aroma enhancement of the distilled liquor, which can prevent aromatic plants from blocking the holes, so that the aromatic plants can be in better contact with liquor steam.

The invention provides a pneumatic type electrode cap dismounting device which can dismount an electrode cap from an electrode stem, the device comprises a clamping mechanism and an airflow channel, the clamping mechanism can clamp the electrode cap and drive the electrode cap to rotate, and a sprue spreader, an impeller and a vortex generator are sequentially arranged in the airflow channel in the extending direction of the airflow channel. The vortex generator is communicated with a gas ejector pipe; a hot air flow channel is formed in the outer side of the sprue spreader and acts on the electrode cap, and a cold air flow channel is formed in the center of the vortex generator and acts on the electrode stem; the impeller is in transmission connection with the clamping mechanism and can rotate under the action of airflow in the airflow channel. Before formal disassembly, the electrode cap and the electrode stem can be subjected to pre-loosening treatment, the electrode cap and the electrode stem are helped to get rid of the jamming condition, and therefore abrasion of the electrode stem is relieved.

The invention relates to a recoverable unlocking bracket for a large-aperture space remote sensing camera, which is characterized in that in a locking state, two explosive bolts respectively penetrate through central holes of an upper pressing block and a conical block and then are connected with an upper section and a lower section of a threaded connecting cylinder, and four wedge blocks are uniformly distributed along the periphery of the threaded connecting cylinder; two wedge-shaped grooves in the wedge block are matched with a first conical boss of the upper support and a second conical boss of the lower support respectively, an annular spring is arranged in a rectangular groove, a plate spring penetrates through a through hole of the wedge block and a rectangular hole of the upper pressing block, then the lower end of the plate spring is hooked on the annular groove of the lower support, and the upper end of the plate spring is fixed to the upper pressing block. And the explosive bolt is detonated and unlocked, the wedge-shaped groove is separated from the conical boss, the conical block is withdrawn, and the four wedge blocks are recovered together and clamp the threaded connecting cylinder. After unlocking, all the free structural parts in the support are restrained and recycled, the risk that the support is stuck due to irregular movement of the free structural parts or the free structural parts move to the outside of the support to become redundant objects is eliminated, and meanwhile the requirement for the large movement distance after the support is unlocked can be met.

The invention discloses a peristaltic pump, and relates to the technical field of peristaltic pumps, a limiting block is elastically and slidably assembled in a pump chamber, and the sliding direction is parallel to a rotating shaft of a pump head assembly; the height of the limiting block is gradually and smoothly increased in the forward rotation direction, and the width of the limiting block is gradually and smoothly increased in the reverse rotation direction. The pump head assembly is rotatably assembled to the pump chamber assembly, when the pump head assembly rotates forwards, the limiting shaft right faces the lower end of the limiting block, the limiting shaft extrudes the limiting block downwards, and at the moment, the extrusion roller extrudes the hose to achieve the pumping process; when the hose needs to be replaced, the pump head assembly rotates reversely, the limiting shaft makes contact with the inner side of the narrow end of the limiting block, and the limiting shaft extrudes the roller support to rotate inwards, so that the extrusion roller is far away from the inner wall of the pump chamber, the distance between the inner wall of the pump chamber and the extrusion roller is increased, a larger gap is formed, and the hose is rapidly replaced. The gap can be increased only by changing the rotating direction of the pump head assembly, and the hose replacement process is greatly facilitated.

The invention belongs to the technical field of sewage purification treatment, and discloses an aquaculture wastewater ecological comprehensive treatment method and system.The method comprises the following steps that a plurality of hollowed-out composite filler balls prefabricated in a factory are placed in a sieve type purification filter dam assembling unit of an ecological purification filter dam; particles in aquaculture wastewater are filtered by filter holes with different diameters formed in a plurality of positions of a sieve type purification filter dam assembly unit, and meanwhile, when wastewater flows in, through iron-carbon micro-electrolysis coupling and an autotrophic-heterotrophic denitrification process of a solid-state carbon source and microorganisms, the particles in the aquaculture wastewater are filtered by the composite filler which is uniformly mixed and filled in a hollow composite filler ball according to a proportion. According to the aquaculture wastewater treatment system and the aquaculture wastewater treatment method, comprehensive ecological purification treatment including filtration, nitrification, denitrification, pollutant and harmful substance degradation and precipitation is performed on the wastewater, solid particles, total nitrogen, total phosphorus and antibiotics in the aquaculture wastewater are efficiently removed, up-to-standard discharge or cyclic utilization is realized, the treatment process and system are greatly simplified, and meanwhile, the construction and operation and maintenance cost of the whole system is also reduced.

The invention relates to a high-oxygen-permeability ionomer, the high-oxygen-permeability ionomer is a copolymer, the high-oxygen-permeability ionomer is formed by mutually connecting a first structural unit and a second structural unit, the knot # imgabs 0 # of the first structural unit, and the structure of the second structural unit is # imgabs 1 #. The high-oxygen-permeability ionomer provided by the invention, the second structural unit comprises a cyclic structure, and the cyclic structure is a cyclic structure. The cyclic structure can greatly reduce the crystallinity and compactness of the high-oxygen-permeability ionomer on the premise of maintaining the chemical stability of the whole perfluoro structure of the high-oxygen-permeability ionomer, so that gaps between molecular chain segments of the high-oxygen-permeability ionomer are larger, oxygen molecules can penetrate through the high-oxygen-permeability ionomer, and the oxygen permeability of the high-oxygen-permeability ionomer is improved. Therefore, the oxygen resistance of the high-oxygen-permeability ionomer is reduced.

The utility model discloses a luggage zipper with a waterproof structure, which comprises two zipper main bodies (1) positioned at the opening and closing position of a luggage, a first zipper head (2) and a second zipper head (3) are arranged between the two zipper main bodies (1), and clamping openings (4) are arranged on the upper end surfaces of the first zipper head (2) and the second zipper head (3); when the two zipper bodies (1) are in a zip-up state, a sealing cover (5) is arranged between the adjacent first zipper head (2) and second zipper head (3), and clamping blocks (6) matched with the clamping openings (4) are arranged at the two ends of the inner wall face of the sealing cover (5). The inner bottom face of the clamping opening (4) is provided with a magnet attraction sheet (7), and the lower bottom face of the clamping block (6) is provided with a magnetic sheet (8). The zipper puller has the advantage of being capable of effectively improving the sealing and waterproof performance of the intersection of the two zipper pullers.

The utility model discloses a splicing type solid wood composite floor which comprises a composite floor body arranged in a multi-layer composite mode. A first buckle head is arranged on one side of the composite floor body, a second buckle head is arranged on the other side of the composite floor body, the first buckle head and the second buckle head are arranged in an up-down buckling mode, a plurality of penetrating limiting mechanisms are installed on the first buckle head in a penetrating mode, and the penetrating limiting mechanisms are connected with the second buckle head in a penetrating and clamping mode. According to the utility model, the arrangement mode that the first buckle head and the second buckle head are matched is utilized, and when two adjacent composite floor bodies are spliced, the relative positions of the adjacent composite floor bodies can be conveniently limited and spliced through the mode that the first buckle head and the second buckle head are mutually buckled; the gap between the first buckle head and the second buckle head forms a labyrinth shape while a large gap between the composite floor bodies is prevented, and dust is prevented from smoothly falling from the first buckle head and the second buckle head.

The invention discloses a deep ploughing-free soil loosening and root promoting agent which is prepared from the following components in parts by mass: 2-4 parts of polyacrylamide, 6-13 parts of humic acid, 4-10 parts of a microbial agent, 15-25 parts of zeolite, 10-20 parts of diatomite, 13-24 parts of an organic fertilizer, 5-8 parts of a biostimulant, 1-5 parts of a trace element complex and 1-3 parts of a dispersing agent. Polyacrylamide is modified, polyacrylic acid is introduced for copolymerization, so that carboxyl groups are introduced for adjusting the pH value of the whole soil, and meanwhile, the carboxyl groups have good hydrophilicity and can be better fused into water, so that the carboxyl groups are more easily attached to the surfaces of diatomite and zeolite to form a more compact wrapping state; and meanwhile, zeolite and diatomite are screened.

The present invention discloses a semiconductor device and a manufacturing and packaging method thereof, including a chip, a lead frame and a package body, wherein the lead frame includes a chip seat and pins, and also includes a guide lead, wherein the guide lead is connected to the chip and the pins respectively, and the middle section of the guide lead protrudes out of the chip, and the package body is injection molded to cover the chip and the lead frame, and the pin part protrudes out of the package body, and a pouring port is arranged on the package body, and the pouring port is arranged on a side close to the guide lead. The present invention arranges the pouring port on a side close to the guide lead, so that the package body can flow along the direction of the guide lead during injection molding, and effectively eliminates the pores and weld lines under the guide lead; the middle section of the guide lead protrudes out of the chip, so that the gap between the guide lead and the chip, and between the guide lead and the lead frame is expanded, so that the package body is smoothly filled in; the chip delamination, package body colloid cracking, water vapor intrusion, ion pollution and other problems are effectively prevented, and the service life of the semiconductor device is improved.