527results about How to "Less squeeze" patented technology

The invention relates to the technical field of refrigerating systems, in particular to a micro-channel air conditioner phase change heat transfer evaporation heat exchanger. Comprising a flowing pipeline, the flowing pipeline is composed of a plurality of vertical pipelines and a plurality of bent pipelines connected with the vertical pipelines, and a continuous flowing path of a condensing agent is formed. And a mixing assembly specially used for stirring the condensing agent is arranged in the vertical pipeline. Fin assemblies are installed on the outer sides of the vertical pipelines, and the outer sides of the fin assemblies are wrapped by a complete shell. When the condensing agent flows in the flowing pipeline, the condensing agent can pass through the mixing assembly in each vertical pipeline to be fully mixed and uniformly distributed. The design ensures that the condensing agent in each vertical pipeline can reach an ideal uniform state. And then, the condensing agent flows through the fin assembly, and heat exchange is effectively carried out by utilizing the heat exchange area increased by the fins. By means of the layout, flowing of the condensing agent is optimized, and the heat exchange efficiency is remarkably improved.

The present invention relates to the field of grain transport technology, and in particular to an agricultural grain transport device, comprising a base, a shell fixedly installed on the top of the base, a feed hopper and a discharge hopper respectively arranged at both ends of the shell, a cylindrical screen arranged inside the shell, a refrigeration mechanism arranged inside the shell, a mounting plate fixedly installed on the side of the discharge hopper away from the shell, a motor fixedly installed on the top of the mounting plate, a rotating shaft fixedly connected to the output end of the motor, and a spiral hollow disk and a solid disk fixedly connected to the outer wall of the rotating shaft. The advantages are: the inside of the shell maintains a low temperature, the low temperature helps to increase the hardness difference between grain and impurities, improve the efficiency of impurity screening, reduce the stickiness between grains, ensure the smooth flow of grain, the screen effectively screens out impurities in the grain, improves the purity of the grain, pushes the grain in layers, prevents excessive accumulation of grain, and reduces the damage of grain due to friction and extrusion.

The invention relates to the technical field of lithium batteries, in particular to a method for improving the volume expansion effect of a silicon-based negative electrode. The preparation method comprises the following steps: firstly, preparing a porous carbon-coated silicon material by using an in-situ synthesis method, and then preparing the porous carbon-coated silicon material into a graphene-coated silicon material by using an electrostatic self-assembly method; and taking the graphene-coated silicon material as a negative electrode active material. Dissolving a negative electrode active material, acetylene black and polyvinylidene fluoride in an N-methyl pyrrolidone solvent to obtain negative electrode slurry; and coating the surface of a copper foil with the negative electrode slurry, and carrying out vacuum drying and cutting to obtain the negative electrode plate. The graphene-coated silicon material prepared by the invention can effectively improve the conductivity of the composite material and inhibit the volume expansion of the composite material in the charge-discharge process, thereby improving the electrochemical performance.

The invention belongs to the technical field of marine towing cables, and provides a marine towing engine automatic cable combing device which comprises a support, the support comprises a bottom plate, and side plates are symmetrically arranged at the top of the bottom plate; the winding assembly is arranged between the two side plates, the winding assembly comprises two outer gear rings rotationally connected to the side plates, a cable roller is rotationally connected between the two outer gear rings, a connecting shaft is fixedly connected to the end of the cable roller, and a guide component is arranged between the two side plates; the cable shifting assembly is arranged on the bottom plate; a cable is guided through reciprocating movement of the cable shifting rod, so that the cable is wound, the cable is kept uniform and compact in the winding process, disordered winding of the cable is avoided, it is guaranteed that the cable is smoothly unwound next time, the cable is subjected to uniform pulling force during winding, the cable can be prevented from being subjected to too large pressure or pulling force, and the service life of the cable is prolonged. Therefore, the service life of the mooring rope is prolonged, mutual friction and extrusion of the mooring rope in the storage process can be reduced through uniform winding, and the integrity of the mooring rope is further protected.

A machining drill bit comprises a handle body, a cutting body and a blade body which are sequentially connected, the end, away from the cutting body, of the blade body is provided with two conical faces and two chip containing grooves, the two conical faces and the two chip containing grooves are sequentially and alternately arranged in the circumferential direction of the blade body, and cutting edge parts are formed between the groove walls of the chip containing grooves and the corresponding conical faces. The cutting body is provided with two chip grooves and two liquid inlet grooves, the two chip grooves and the two liquid inlet grooves are sequentially and alternately formed in the circumferential direction of the cutting body, each chip groove and each liquid inlet groove are spirally formed in the direction from the blade body to the handle body, and a cutting blade is formed in the position, between each liquid inlet groove and the corresponding chip groove, of the cutting body. The end, away from the handle body, of each chip discharging groove extends to the corresponding chip containing groove, and the end, away from the handle body, of each liquid inlet groove extends to the conical face. The machining device comprises the machining drill bit. The machining drill bit and the machining device can effectively reduce the cutting heat, improve the cutting efficiency and prolong the service life.

The utility model relates to the technical field of waist and abdomen supporting devices, in particular to a waist and abdomen supporting device for the rehabilitation department, which comprises a support, a connecting component, a supporting component, a tightening component and a butt-joint component, the supporting component is arranged on the connecting component, the tightening component is arranged on the supporting component, the butt-joint component is arranged on the tightening component, and the butt-joint component is arranged on the tightening component. The connecting assembly comprises a fixing plate, a connecting base, a rotating shaft, a rotating block, a locking column and a positioning block, the fixing plate is arranged on the support, the connecting base is arranged at the end, away from the support, of the fixing plate, a round hole is formed in the connecting base, the rotating shaft is arranged on the connecting base through the round hole, the rotating block is rotationally arranged on the rotating shaft, and the locking column is arranged on the rotating block. The locking column is arranged on the rotating block, a limiting hole is formed in the positioning block, and the positioning block is movably arranged on the locking column through the limiting hole, and through the connecting assembly, a patient can obtain two different supporting experiences, and the abdomen of the patient can have a rest space.

The utility model relates to the technical field of cleaning equipment, in particular to panel shell surface cleaning equipment which comprises a supporting frame, a feeding assembly and a cleaning assembly are arranged at the upper end of the supporting frame, and the feeding assembly and the cleaning assembly are driven by a driving component; according to the flat plate shell cleaning device, clean cleaning cloth is wound on the discharging roller, dirty cleaning cloth is wound on the collecting roller, the collecting roller rotates to drive the cleaning cloth to move when the flat plate shell is cleaned, the dirty cleaning cloth is prevented from affecting the cleaning effect, and meanwhile the cleaning cloth is convenient to replace; secondly, according to the flat plate shell cleaning device, a screw rod is driven to rotate through a moving motor, so that a moving frame is driven to move up and down, then a pressing plate is driven to move, the lower end of the pressing plate abuts against cleaning cloth, then the flat plate shell is cleaned, and extrusion of the pressing plate to the flat plate shell is reduced through a buffer spring.

The invention discloses an anti-disengaging type mechanical arm for mold manufacturing and a using method, and belongs to the technical field of mechanical arms, the anti-disengaging type mechanical arm comprises a mechanical arm body and a tail end executing structure installed on the mechanical arm body, the tail end executing structure comprises a parallel pneumatic finger and a micro air extracting pump, and clamping seat assemblies are connected to two clamping jaws of the parallel pneumatic finger. After the tail end executing structure grabs the mold base, clamping force of spherical elastic air bags in the flexible reinforcing units located in the negative pressure grooves and negative pressure adsorption force in the negative pressure grooves are overlapped and jointly and additionally act on the surface of the mold base, and the grabbing firmness of the tail end executing structure on the mold base is enhanced through the overlapped effect; and in the process that the vacuum degree in the negative pressure groove is gradually increased, the clamping force on the mold base is further increased through the spherical elastic air bag with the increased size, so that the grabbing firmness of the tail end execution structure is further enhanced, and the risk that the mold base falls off in the moving process is greatly reduced.

The utility model discloses a fruit ripening accelerating storage device which comprises a storage device body, a storage box is arranged on the storage device body, a separation top plate is arranged at the top of the storage box, side separation net plates are symmetrically connected to the two sides of the lower end of the separation top plate, an induced draft fan is installed on the separation top plate in a clamped mode, and an air chamber is arranged above the separation top plate. And air guide pipes penetrate through the two sides of the separation top plate, the air guide pipes are located between the storage box and the side separation net plates, layered frames are arranged in the storage box in an overlapped mode, positioning rods are arranged above the layered frames, arc structures are evenly arranged on the positioning rods at intervals, and guide rods are connected between the arc structures between the positioning rods at intervals. According to the fruit ripening acceleration storage device, a strip-shaped channel structure is formed through the guide rods, fruits can be stored in a layered mode, extrusion among the fruits is reduced, the fruits are dispersed, the uniformity of the fruit ripening acceleration process is guaranteed, meanwhile, the step of rolling over the fruits is reduced, and the storage quality is improved.

The utility model discloses a water conservancy pipeline auxiliary laying device which comprises a first clamping hoop, a second clamping hoop, a third clamping hoop and a fourth clamping hoop. The second clamping hoop is arranged on one side of the first clamping hoop in a parallel structure. The top of the first clamp and the top of the second clamp are each provided with an extrusion mechanism, the two sides of the top of the first clamp and the two sides of the top of the second clamp are each fixedly connected with an integrally-formed fixing block, racks distributed in parallel are arranged between the first clamp and the second clamp, and the rotating mechanism comprises a fixing pipe fixed to the top of the first clamp; a rotating rod; the plurality of gears are respectively fixed at the two ends of the rotating rod; and the rotating disc is fixed at one end of the rotating rod. By means of the arrangement mode that the extrusion mechanism, the rack and the rotating mechanism are matched, pipelines in the inner cavities of the first clamp and the second clamp can be relatively close to each other and attached, extrusion of the outer walls of the pipelines is reduced, and the stability of pipeline butt joint is improved through the connecting mechanism.

The invention discloses an automatic food bagging and packaging machine, and relates to the technical field of food packaging equipment. An automatic food bagging and packaging machine comprises a machine frame, a bag supplying mechanism, a bag opening mechanism, a food conveying mechanism, a corner inserting and bag supporting mechanism and a heat sealing mechanism, and the bag supplying mechanism, the bag opening mechanism, the food conveying mechanism, the corner inserting and bag supporting mechanism and the heat sealing mechanism are installed on the machine frame. According to the food bagging and packaging machine, the multiple working procedure steps of automatic bag taking, bag opening and bagging, food bagging, bag sealing and the like are jointly completed through ordered connection of all the mechanisms, the packaging process of the food bagging and packaging machine is further optimized, the defective rate of food bagging and packaging can be reduced, and the bagging and packaging effect and the bagging and packaging efficiency of food can be improved.

The utility model discloses a battery device and electric equipment, and relates to the technical field of battery packs, the battery device comprises a box body, a filling piece and a battery monomer, the box body comprises an enclosure frame and a bottom plate, the enclosure frame is arranged on the bottom plate to define a mounting cavity, and at least part of the bottom plate and / or the enclosure frame is hollow to form a cavity; the filling piece is arranged in at least part of the cavity, the filling piece comprises a base structure and a plurality of buffer parts embedded in the base structure, the multiple buffer parts are arranged in an aligned mode in the thickness direction of the base structure, and at least part of the base structure is connected with the inner wall face of the cavity; and the battery monomers are mounted in the mounting cavities. According to the technical scheme provided by the invention, the situation that the existing box body is easy to deform due to collision, so that the battery monomers in the box body are extruded is relieved.

The invention discloses a pipe jacking construction device and a construction technology thereof, and relates to the technical field of pipeline construction, the pipe jacking construction device comprises a starting well, a backrest is fixedly connected to the inner wall of the left side of the starting well, an oil cylinder is fixedly connected to the right side of the backrest, a supporting frame is fixedly connected between the oil cylinder and the inner bottom wall of the starting well, and a grading ring is fixedly connected to the output end of the oil cylinder; the device further comprises an adaptive bearing auxiliary mechanism and a pipe jacking deviation testing mechanism, through the arrangement of the adaptive bearing auxiliary mechanism, according to the difference of geological conditions, construction conditions and engineering requirements of different starting wells, gaps between different transversely-arranged arc-shaped bottom supporting plates can be effectively adjusted so as to adapt to and support construction pipelines of different specifications, and the working efficiency is improved. Therefore, the whole supporting system does not need to be replaced, the flexibility and efficiency of construction are greatly improved, the matched arc-shaped bottom supporting plate can be more tightly attached to the surface of the pipeline, more uniform supporting force is provided, shaking and deviation of the pipeline in the moving process are reduced, and therefore the supporting stability is enhanced.

The invention relates to the field of manufacturing of non-aqueous electrolyte storage batteries, in particular to button cell assembling equipment which comprises a cell assembling station and a cell reprocessing station which are carried by a conveying belt, cell raw materials are assembled and formed on the cell assembling station, a station rotating disc is arranged at the cell reprocessing station, and the battery reprocessing station is connected with the station rotating disc. According to the battery assembling and reprocessing device, the battery assembling station and the battery reprocessing station are connected through the conveying belt, after button battery raw materials are assembled at the battery assembling station through the battery assembling mechanism, the battery reprocessing station is connected with the battery assembling station through the battery reprocessing mechanism, and the battery reprocessing station is connected with the battery assembling station through the battery reprocessing mechanism. The button cells are conveyed to the station rotating disc of the cell reprocessing station through the conveying belt, the button cells are stacked on the bearing seat of the station rotating disc through the material moving assembly, the stacked button cells are driven by rotation of the station rotating disc to be subjected to the procedures of film sleeving, heating shrinkage and the like till discharging, and therefore connection of the machining procedures is smoother.

The invention relates to the technical field of household appliances, and provides an ice-making system and a water dispenser, the ice-making system comprises an ice storage box, an ice-making box, an ice receiving box and an ice storage box, the ice-making box is arranged in a water storage box, the ice-making box is provided with an ice-making cavity and an opening communicated with the ice-making cavity, and the ice-making box can rotate relative to the water storage box; the ice pouring device is used for switching between an ice pouring position with a downward opening and an ice making position with an upward opening; the ice receiving box is arranged in the water storage tank, the ice receiving box sleeves the lower part of the ice making box, the ice receiving box and the ice making box are spaced to form an ice shoveling channel, the ice receiving box is provided with an ice skating plate at the ice outlet end of the ice shoveling channel, and the ice skating plate is obliquely arranged downwards along the axis direction of the ice making box; the ice storage box is arranged below the ice outlet end and used for receiving ice blocks sliding out of the ice skating plate. According to the ice shoveling device, ice blocks shoveled out of the ice shoveling channel are guided and stored through the ice skating plate, the storage amount of the ice blocks is increased, and meanwhile ice clamping at the ice outlet can be prevented.

The utility model discloses a structure and equipment for breaking and sectioning sausage food materials, and relates to the technical field of food material processing, the structure for breaking and sectioning the sausage food materials comprises a rotating guide wheel, a self-adaptive distance adjusting assembly and a sectioning knife, and a guide groove is formed in the periphery of the outer wheel face of the guide wheel; the self-adaptive distance adjusting assembly is arranged on one side of the material guiding wheel, a feeding channel used for conveying sausage food materials is formed between the self-adaptive distance adjusting assembly and the material guiding wheel, and the self-adaptive distance adjusting assembly can automatically adjust the size of the feeding channel according to the diameter of the sausage food materials to be processed; the cutting knife is arranged at the discharging end of the feeding channel, and the cutting knife stretches into the feeding channel to cut the sausage food materials. The equipment for breaking and cutting the sausage food materials comprises at least one group of structures for breaking and cutting the sausage food materials, cutting knives in all the structures are coaxially arranged, and material guide wheels are coaxially arranged. The device is simpler and more reliable in structure and convenient to maintain, material extrusion is reduced, and the material processing quality is improved.

The utility model relates to a battery box and a battery. The battery box body comprises a box body assembly, the upper cover assembly covers the box body assembly in the first direction, a containing cavity is defined by the upper cover assembly and the box body assembly, the upper cover assembly comprises an upper cover body and reinforcing ribs, the upper cover body is connected with the box body assembly, and the reinforcing ribs are arranged on the upper cover body; the supporting assembly is located in the containing cavity, and the supporting assembly is connected between the box body assembly and the upper cover body; the orthographic projection of the reinforcing rib and the orthographic projection of the supporting assembly are arranged in a staggered mode in the first direction. The battery box body provided by the utility model has relatively high strength, and the impact resistance of the battery box body can be improved.

The invention relates to the technical field of solar cells, in particular to a large-area perovskite / silicon-based laminated cell structure and a preparation method thereof. The large-area perovskite / silicon-based laminated cell structure comprises: a silicon-based cell; the first transmission layer is positioned on one side of the silicon substrate battery; the perovskite layer is positioned on one side, far away from the silicon substrate battery, of the first transmission layer; the second transmission layer is positioned on one side, far away from the silicon substrate battery, of the perovskite layer; the buffer layer is located on one side, away from the silicon-based battery, of the second transmission layer; the transparent conducting layer is located on the side, away from the silicon substrate battery, of the buffer layer and comprises at least one first transparent conducting layer and at least one second transparent conducting layer, the first transparent conducting layer is located between the buffer layer and the second transparent conducting layer, and the density of the first transparent conducting layer is smaller than that of the second transparent conducting layer; and the electrode is formed on one side, far away from the silicon substrate battery, of the transparent conductive layer through silk-screen printing or ink-jet printing.

The utility model relates to the technical field of cables, and discloses an anti-aging cable which comprises a shell body, eight air bags are evenly and fixedly arranged on the inner side of the shell body, sliding blocks are fixedly arranged on the opposite sides of every two of the eight air bags, coils are fixedly arranged on the inner sides of the eight air bags, and four wires are arranged on the inner sides of the coils. The shell body comprises an inner protective layer, a waterproof layer is arranged at the lower end of the inner protective layer, a base layer is arranged at the lower end of the waterproof layer, and an outer protective layer is arranged at the lower end of the base layer. According to the anti-aging cable, the air bag in the middle of the anti-aging cable can increase resistance when the cable is extruded, the sliding blocks can maintain the air bag, protect the cable and reduce cable damage, the cable is provided with a plurality of protective layers, and the protective layer material has an anti-aging effect, can insulate heat, water and insulate, and can prolong the service life of the cable; the cable can be better protected, and resource waste is reduced.

This utility model relates to the field of busbar technology, specifically an assembled composite busbar. A T-shaped plate is provided on the outer side of multiple sets of copper busbars and insulating layers. The end plates of the T-shaped plates are attached to the sidewalls of the copper busbars and insulating layers. The T-shaped plates are encapsulated within an encapsulation layer, and screws extending to the outer side of the encapsulation layer are provided on both the upper and lower sides of the T-shaped plates. Flexible buffer components are sleeved on the ends of the screws. The beneficial effects are: by adding horizontally placed T-shaped plates to the sidewalls of the existing busbar, the extended horizontal plates increase the strength and support of the encapsulation, preventing breakage. Simultaneously, the screws extending to the outer side of the encapsulation layer on the T-shaped plates connect to the padding layer, allowing the busbar to be suspended in mid-air. The padding layer supports the upper and lower sides of the busbar, reducing pressure on the circuit board and improving the stability of the circuit connection.

The invention provides a split type kirschner wire and kit for an orthopedic surgery robot, and belongs to the technical field of kirschner wires. The split type kirschner wire comprises a front kirschner wire body used for puncturing bones and a rear kirschner wire body used for being connected with an end effector of the orthopedic surgery robot; the front kirschner wire body is detachably connected with the rear kirschner wire body. Compared with Kirschner wire bending operation in the prior art, after the split type Kirschner wire is driven into the human body, the front Kirschner wire body with the proper length can be obtained more conveniently and safely, the problem of positioning displacement or loss caused by excessive pulling of the Kirschner wire is solved, and the Kirschner wire is more convenient to use. After the front kirschner wire body is detached and separated, due to the fact that the connecting end of the front kirschner wire body is smooth and clean, follow-up balloon dilatation kyphoplasty or pedicle screw implanting operation is facilitated, operation risks are reduced, and related operation operations can be carried out more safely, more reliably and more conveniently.

The utility model is suitable for the technical field of food transportation, and provides a raspberry transfer box which comprises a box body, placing grooves are evenly distributed on the periphery of the inner wall of the box body, an installation groove is horizontally formed in the position, close to the top, of the box body, and the raspberry transfer box further comprises a cover plate, the bulge assemblies are arranged in the box body at equal intervals and are fixedly connected with the bottom of the box body; the binding assemblies are arranged at the bottom of the box body in a transversely and vertically staggered mode. According to the raspberry transferring box, the protruding assembly can limit raspberries in the transferring process in the mode that the protruding assembly is matched with the containing groove and the cover plate, collision and extrusion of the raspberries in the transferring process are reduced, the integrity of raspberry fruits is ensured, the binding assembly binds ice bags, the raspberries are rapidly pre-cooled, and the raspberry transferring efficiency is improved. Risks of water loss and fungus growth of raspberries are reduced, and the refreshing time and the loading and transporting time of raspberry fruits are prolonged.

The utility model provides a hinge opening and closing pressure adjusting structure, and belongs to the technical field of hinges. The hinge opening and closing pressure adjusting structure solves the problems that an existing hinge assists in closing and adjusting of a door leaf difficultly and is inconvenient to use, and comprises a hinge body, a mounting blade A and a mounting blade B are arranged on the hinge body, a hinge plate is arranged between the mounting blade A and the mounting blade B, and a mounting base is arranged on the mounting blade A; symmetrical installation bosses are arranged at the two ends of the installation base, a spline shaft is arranged between the installation bosses, pressure springs are arranged at the two ends of the spline shaft, adjusting cavities are formed in the side walls of the installation bosses, pressing blocks and pressing plates which abut against each other are arranged in the adjusting cavities, and pressure bearing parts are arranged on the pressing plates and abut against the pressure springs. The stepless adjusting mechanism of the automatic feeding machine has the advantages that the adjustment is simple and convenient, the application range is wide, and the stepless adjustment is realized.

The utility model discloses a forensic examined material temporary brain fixing suspension box which comprises a box body, a cover body is arranged on the upper end face of the box body, a first conical surface is fixedly arranged on the lower end face of the cover body, a second conical surface is arranged at the upper end of the box body, and the first conical surface is located in the second conical surface. A first sealing groove is formed in the upper end face of the box body, a second sealing groove is formed in the lower end face of the cover body, and rubber pads are arranged in the first sealing groove and the second sealing groove, so that a first conical surface on the cover body can be placed in a second conical surface at the upper end of the box body; the cover body and the box body are fixedly installed through the buckle body and the hook so as to improve the sealing performance, and the first sealing groove, the second sealing groove and the rubber pad are arranged, so that the sealing performance of the connecting position can be further improved, and stationary liquid in the connecting position is prevented from leaking.

The invention relates to the technical field of medical care equipment, and discloses a multifunctional physiotherapy couch which comprises a mounting base, a physiotherapy couch body is arranged on the mounting base and rotationally arranged on the mounting base through a corresponding rotating rod, containing cavities are symmetrically formed in the surface of the front end of the physiotherapy couch body, and an armpit supporting assembly is arranged in each containing cavity. The armpit supporting assembly is used for supporting the armpits of the patient. Through the arrangement of the armpit supporting assembly, a connecting sleeve and a bearing rod can extend out of the corresponding containing cavity, then the connecting sleeve and the bearing rod achieve the bearing effect on the armpits of a patient, the situation that the stroke patient slides down from the physiotherapy couch body is prevented to a certain degree, meanwhile, the patient is positioned through bending, and therefore the patient can be conveniently and rapidly positioned. The patient is effectively prevented from inclining forwards, the multiple bearing elastic pieces on the connecting sleeve can also deform correspondingly, then the contact area between the stroke patient and the connecting sleeve is increased, and extrusion to the armpits of the patient is reduced.

The utility model provides a suction nozzle placing rack, which relates to the field of suction nozzles, and comprises a storage frame, a bearing plate, a left ring plate, a right ring plate, a left pull rod, a right pull rod, a left top plate, a right top plate, a slot, a first placing rack, a second placing rack and a third placing rack, and the left top plate is fixed at the left end of the top of each of the first placing rack, the second placing rack and the third placing rack; right top plates are fixed to the right ends of the tops of the first placing frame, the second placing frame and the third placing frame correspondingly, left pull rods and right pull rods penetrate through the interiors of the first placing frame, the second placing frame and the third placing frame correspondingly, and protection pads are attached to the inner walls of a left annular plate and a right annular plate correspondingly; the utility model provides a suction nozzle placing frame which aims to solve the problems that an existing suction nozzle placing frame is prone to vibration or falling off accidentally in the transportation or lifting process, but suction nozzles are prone to being separated and damaged, no protection object is used for protecting the outer walls of the suction nozzles in the suction nozzle placing process, the outer walls of the suction nozzles are prone to being abraded, and the service life of the suction nozzles is prolonged. And when the suction nozzle is vibrated, the abrasion of the suction nozzle can be further deepened.

The present invention discloses an automatic page-turning advertising machine, comprising an advertising machine main body, a top protection mechanism and a bottom protection mechanism; the top protection mechanism comprises a water diversion plate and a top mounting plate; mounting feet are respectively fixed at both ends of the bottom surface of the water diversion plate, and a top buffer bracket fixed on the water diversion plate is installed inside the two mounting feet; the bottom protection mechanism comprises a base and a bottom mounting plate, and a bottom buffer bracket is arranged between the base and the bottom mounting plate; the present invention has a scientific and reasonable structure and is easy to install. The advertising machine main body is installed on the ground through the bottom mounting plate, and the bottom protection mechanism can play a safety protection effect on the advertising machine main body to avoid bending and damage of the advertising machine main body caused by external impact; the top protection mechanism of the present invention can buffer the squeezing of rain and snow on the advertising machine main body, and the hemispherical water diversion plate with a water diversion groove cooperates with the top mounting plate with a water flow channel to facilitate the efficient discharge of rainwater and avoid rainwater accumulation.

The utility model discloses a constructional engineering pile, which relates to the technical field of constructional engineering piles and comprises a pile body and a pile head, the pile head is mounted at the top of the pile body through screws, a protection mechanism and a stabilizing mechanism are arranged on the inner side of the pile body, the stabilizing mechanism is positioned at the bottom of the protection mechanism, the protection mechanism comprises an expansion piece, and the expansion piece comprises a first baffle. The first baffle is movably connected to the inner side of the pile body through side sliding blocks, the side sliding blocks are fixedly installed on the two sides of the first baffle, a second baffle is arranged on the inner side of the first baffle, and a synchronizing shaft is fixedly installed on the inner side of the second baffle. According to the constructional engineering pile, the horizontal sliding rail connected with the lifting sliding block drives the first baffle connected with the horizontal sliding rail to move under the limitation of the side sliding block, and therefore when concrete pouring is conducted on the pile body, the first baffle and the second baffle wrap the concrete pouring area of the pile body all the time; therefore, direct impact of concrete on the pile body is avoided, and the probability of swelling deformation of the pile body is reduced.

A plug valve in a CO2 air conditioning system comprises a hollow valve body, a throttling column with a through hole is arranged in the valve body, and the throttling column is floatingly arranged in the inner cavity of the valve body, an expansion groove is arranged on the throttling column, cylindrical sealing parts are symmetrically arranged on the left and right sides of the throttling column, and the cylindrical sealing parts are provided with contact surfaces adapted to the outer shape of the throttling column to form a hard seal together; a guide tube, a conical ring gasket, a butterfly spring and a plug cover are also arranged in the inner cavity of the valve body on the left and right sides of the cylindrical seal, one end of the guide tube is sealingly supported on the cylindrical seal, and the other end of the guide tube is sealingly supported on the plug cover, a conical ring gasket and a butterfly spring are mounted on the guide tube, and the plug cover presses the butterfly spring to make the cylindrical seal tightly embrace the throttling column to form a seal.

The invention discloses a novel clinical uterine curettage device for gynaecology and obstetrics, and relates to the technical field of uterine curettage devices, the novel clinical uterine curettage device for gynaecology and obstetrics comprises a handle, a length adjusting mechanism, an angle adjusting mechanism and a rotating mechanism are arranged on the inner side of the handle, a movable cylinder is arranged on the inner surface of the length adjusting mechanism, and a deformation mechanism is arranged at one end of the movable cylinder. According to the novel clinical uterine curettage device for the obstetrics and gynecology department, by arranging the deformation mechanism, the opening amplitude and shape of the deformable curettage ring can be precisely adjusted, the deformable curettage ring is made to adapt to the sizes and shape differences of uterine cavities of different patients, compared with a fixed arc-shaped structure, friction and extrusion generated when the curettage assembly enters the uterine cavity are reduced, the operation entering difficulty is lowered, and the pain feeling of the patients is reduced; the problems that most scraping assemblies of an existing clinically-used uterine curettage device are of a fixed-shape arc-shaped structure, the entering difficulty is increased, the operation time is prolonged, high pain can be brought to a patient, even complications such as uterine cavity mucosa injury can be possibly caused, and postoperative recovery of the patient is affected are solved.