119results about How to "Avoid hindrance" patented technology

The present invention belongs to the field of micro algae biotechnology, and is especially one kind of closed pipeline optical bioreactor plant for large scale culture of micro algae. The optical bioreactor plant includes transparent pipeline, gas analyzing unit, auxiliary pipe system, culture parameter sensing and controlling unit and economic micro algae. The present invention adopts large gas analyzing unit, parallel connected transparent pipes, mechanically drive water flow, mutual light blocking of cells, etc. to ensure the gas exchange inside the reactor for photosynthetic metabolism, reduce oxidation damage and light damage, replenish CO2 effectively, reduce the blocking of bubble column on water flow, and raise micro algae culturing efficiency and yield. In addition, the optical bioreactor plant may be established in place with sufficient sun light to utilize natural light effectively.

The invention discloses a culvert-type vertical take-off and landing lifting body unmanned aerial vehicle and relates to the technical field of vertical take-off and landing unmanned aerial vehicles.The culvert-type vertical take-off and landing lifting body unmanned aerial vehicle comprises a fuselage (1), lifting force rotor wings (2), a take-off and landing culvert (3), tilting-rotating thrustculverts (7) and tilting-rotating thrust rotor wings (8). The take-off and landing culvert (3) is composed of a through hole penetrating through the upper surface and the lower surface of the fuselage (1), and the lifting force rotor wings (2) are arranged in the take-off and landing culvert (3). The tilting-rotating thrust culverts (7) are hinged to the rear end of the fuselage (1) through tilting-rotating control mechanisms (9), the tilting-rotating control mechanisms (9) are configured to be capable of enabling the included angle between the axis of each tilting-rotating thrust culvert (7)and the axis of the fuselage (1) to be variable, and the tilting-rotating thrust rotor wings (8) are arranged in the tilting-rotating thrust culverts (7). Under the conditions that the vertical take-off and landing capacity of the unmanned aerial vehicle is maintained and the overall weight of the unmanned aerial vehicle is not excessively increased, the flight speed of the unmanned aerial vehicle is increased, the flight stability of the unmanned aerial vehicle is improved, the rotor wing exposed problem is avoided through the culverts, and the flight safety and the take-off and landing hovering efficiency are improved.

The invention discloses a magnetorheological fluid multi-stage treatment device and a control method and component manufacturing method thereof and belongs to the technical field of machine manufacturing. The magnetorheological fluid multi-stage treatment device comprises a preposition piston cylinder, a middle piston cylinder, a postposition piston cylinder, a preposition piston, a middle piston, a postposition piston, a preposition filtering box, a middle filtering box, a postposition filtering box, a preposition filtering mesh, a middle filtering mesh and a postposition filtering mesh. The preposition piston cylinder is connected with the preposition piston through a bolt, the preposition bolt is matched with an inner cavity of the preposition filtering box, the preposition filtering box is vertically arranged, and the axis is in the vertical direction; meanwhile, the invention further provides corresponding control method and a key component manufacturing method of the device. According to the magnetorheological fluid multi-stage treatment device and the control method and component manufacturing method thereof, a two-standing three-filtering mode is adopted to filter mixed liquid, the characteristic of the mixed liquid at each stage is fully utilized, and the purpose of fast and thoroughly separating magnetic substances and solvent is finally achieved.

An iron-type golf club head comprising a body with a striking face and a hollow cavity portion, a medallion, and a damping insert that is spaced from, and does not contact any portion of, the striking face is disclosed herein. The damping insert is trapped between the medallion and a support structure that extends from the body of the club head approximately parallel with the striking face, and is at least partially suspended over or in the cavity portion. The structure may be an elongated stiffening member that connects upper and lower portions of the body to one another, or a rectangular lip section. The damping insert is affixed to only one of the medallion and the structure with an adhesive material, and damps vibration in the striking face after the striking face makes contact with a golf ball, while the striking face is rebounding from impact.

The invention provides a verification code identification input method and system based on sliding verification. The method includes: finding out the position of a mosaic and obtaining a picture 1 through the screenshot function of selenium+phantomjs; automatically identifying and controlling the slider in the mouse cursor point, and performing screenshot to get a picture 2 after a time thresholdis set; carrying out image processing and recognition on the picture 2 to obtain a contrast picture 3; calculating that center distance of the black region in the picture 3, and obtaining the distancen to be displaced by the mouse; according to the distance n, outputting the most real sliding track of human through the analysis of the moving track of real human mouse; increasing the random valueof some moving points according to the mouse simulation moving trajectory; phantomjs simulating the mouse trajectory, and the mouse clicking on the slider to simulate real human sliding. Compare withthat prior art, the method and the system have the advantages that the automatic identification of the sliding authentication code is carried out simply and accurately, and the blocking effect of thesliding authentication code on the traffic flow is solved.

The invention relates to a method for increasing the combustion efficiency of boron powder. The method comprises the following steps: firstly, weighing fluororubber and acetone by the mass ratio thereof being 1:(1-200); then, dissolving the fluororubber in the acetone to obtain fluororubber solution; next, adding boron powder to the fluororubber solution by the mass ratio between the boron powder and the fluororubber being 1:(0.01-0.5); stirring at 20 to 70 DEG C; and drying the obtained product at 20 to 100 DEG C for 1h to 20h after the acetone is fully evaporated to obtain the boron powder coated with fluororubber. The method of the invention has the advantages of simple process and convenient operation; the boron powder as a solid fuel prepared by the method of the invention has the advantages of stable quality and reliable performance; and the method can effectively increase the combustion efficiency of boron powder.

The invention relates to a transmission tower climbing robot clamping device for clamping angle steel. The invention aims at providing a clamping device for a transmission tower climbing robot which can effectively clamp angle steel and can overcome obstacles. A climbing robot clamping device for power transmission tower comprises a box body, a transmission mechanism arranged on the box body, a clamping mechanism for clamping angle steel and a tight-pressing mechanism linked with the clamping mechanism arranged on the outside of the box body, the transmission mechanism comprises an electric motor, a gear transmission mechanism driven by an electric motor and a transmission lever one end of which is mounted on the gear transmission mechanism, the other end of the drive lever is fixed on theclamping mechanism, driven by the gear transmission mechanism, the transmission lever can make an S-shaped motion, the clamping mechanism can make a closing and opening action under the driving of the transmission lever to achieve clamping or loosening of the angle steel, and the ejecting mechanism can achieve the clamping and retracting of the angle steel with the closing and opening action of the clamping mechanism.

An iron-type golf club head comprising a body with a striking face and a hollow cavity portion, a medallion, and a damping insert that is spaced from, and does not contact any portion of, the striking face is disclosed herein. The damping insert is trapped between the medallion and a support structure that extends from the body of the club head approximately parallel with the striking face, and is at least partially suspended over or in the cavity portion. The structure may be an elongated stiffening member that connects upper and lower portions of the body to one another, or a rectangular lip section. The damping insert is affixed to only one of the medallion and the structure with an adhesive material, and damps vibration in the striking face after the striking face makes contact with a golf ball, while the striking face is rebounding from impact.

The invention discloses a method for detecting salmonella and staphylococcus aureus in food simultaneously. The method includes the following steps: 1), diluting a to-be-tested food sample according to GB4789 to obtain sample homogenate of 1:10, adding 50-65wt% of nitrilotriacetic acid solution into the sample homogenate according to the volume ratio of the sample homogenate to the nitrilotriacetic acid solution being (5-7):1, vibrating the mixture, adding phosphate buffer solution or 0.05% tween-20 contained phosphate buffer solution, performing centrifugal layering, and discarding an upper layer; 2), mixing a sample obtained after processing of the step 1) with immunomagnetic beads, vibrating the mixture, subjecting the mixture to standing and layering on a magnetic frame, discarding an upper layer, and washing a lower layer of the sample, wherein the immunomagnetic beads are obtained by modifying salmonella and staphylococcus aureus antibodies, which are labeled by magnetic bead coupled biotin, by streptavidin; 3), adding the phosphate buffer solution to the washed sample, vibrating the mixture, applying the mixture to an LB plate, and performing cultivation and observation. The method is simple and convenient to operate, accurate, efficient and low in cost, two target bacteria are enriched, and detection time can be shorten from 72h to 25h.

The present invention relates to the heat treatment process of wrought Mg-Zn-Mn alloy, and features that the heat treatment process includes the following steps: solid dissolving of the extrusion formed alloy material at 400-440 deg.c for 2-4 hr and water quenching to room temperature, heating to 90 deg.c and maintaining for 16-24 hr, further heating to 180 deg.c and maintaining for 12-16 hr, and air cooling to room temperature. The wrought Mg-Zn-Mn alloy through the said heat treatment has greatly raised strength and toughness and wide application range.

The invention provides a Fe-Si-B amorphous alloy-copper laminated composite material and a preparation method thereof. A vacuum diffusion connection testing machine is used, and Fe-Si-B amorphous alloy and copper are welded to form the laminated composite material through a diffusion welding method. In preparation, at super-cooled liquid-phase region temperature of the amorphous alloy, plastic deformation is performed on the amorphous alloy and the copper through pressure effect, connection surface oxidation films are removed, fresh surfaces of the amorphous alloy and the copper are contacted tightly, connection interface diffusion process is promoted through thermal insulation and pressure maintaining simultaneously, and an iron-based amorphous-copper laminated composite material of a large size is prepared under the precondition that crystallization of the amorphous alloy is avoided. By adopting the technical scheme, process parameters are controlled strictly and accurately, and the large-size composite material with good connection performance and broadband shielding performance is obtained.

The invention discloses a pulse current assisted ultrasonic rolling surface strengthening device and method. The device comprises a pulse power supply, a conductive part, a clamping mechanism and an ultrasonic rolling module, the clamping mechanism is used for clamping a workpiece, the clamping mechanism is driven by a lathe to rotate, the conductive part is in contact with the clamping mechanism, the pulse power supply is connected with the conductive part and used for applying pulse current to the workpiece, and the ultrasonic rolling module is used for conducting pulse current assisted ultrasonic rolling surface strengthening treatment on the surface of the workpiece. According to the pulse current assisted ultrasonic rolling surface strengthening device and the method, the electroplastic effect, the skin effect and the heat effect of pulse current are compounded with severe plastic deformation caused by ultrasonic rolling, so that the strengthened surface layer is thicker, the surface layer performance is better, the surface strengthening effect of the metal material can be improved, the surface appearance of the metal material is better, and the performance of the metal material is improved.

The invention provides a garbage grading collection cleaning machine, belongs to the technical field of water surface cleaning, and solves the problem of low garbage recycling efficiency caused by slow running of a water surface cleaning machine. The garbage grading collection cleaning machine comprises a boat, garbage recycling channels are formed in two sides of the boat, garbage grading collection devices are arranged in the garbage recycling channels and comprise first inclined screen plates, second inclined screen plates and inclined plates which are sequentially and obliquely arranged onthe boat and spaced pairwise, garbage collection boxes are fixed onto the boat and positioned above the garbage recycling channels, openings for communicating with the first inclined screen plates, the second inclined screen plates and the inclined plates are formed in two sides of the garbage collection boxes, and hole cover components cover the openings and can rotate relative to the garbage collection boxes. Compared with the prior art, running of the boat cannot be hindered by garbage, so that the garbage collection efficiency is improved.

The invention discloses a prefabricated assembled type toughness combined shear wall structure and a construction installation method thereof. Construction is conducted on foundations. The prefabricated assembled type toughness combined shear wall structure comprises a steel plate combined shear wall, steel pipe concrete columns, shear-resistant steel plates, bolts, overhanging plates and anchor rods. The steel plate combined shear wall is attached to the foundations and is provided with a plurality of round holes. The steel pipe concrete columns are fixed to the two vertical side edges of thesteel plate combined shear wall. The shear-resistant steel plates are clamped on the lower portion of the steel plate combined shear wall and are provided with strip-shaped pre-open holes corresponding to the round holes. The steel plate combined shear wall is clamped and fixed between the two shear-resistant steel plates through the bolts. The overhanging plates are fixed to the steel pipe concrete columns. The bottom ends of the anchor rods are pre-embedded in the foundations. Upper rod bodies penetrate through the overhanging plates and then are sleeved with belleville spring sets, and twoends are symmetrically sleeved with limiting steel plates and high-strength nuts. The steel plate combined shear wall has flexural bearing capacity, self-resetting ability is enhanced, and the steelplate combined shear wall also has better toughness in an earthquake.

The invention provides a modified graphene composite polyethylene material, which comprises, by weight, 75-100 parts of polyethylene, 0.5-2 parts of graphene, 1-4 parts of a coupling agent, 4-10 partsof a compatilizer, 0.8-2 parts of a dispersing agent, 2-5 parts of a flocculating agent and 3-5 parts of a stabilizer. Compared with the method in the prior art, the method of the invention has the following characteristics that graphene is used as the antistatic agent and the reinforcing agent, and is organically modified with the coupling agent, the maleic anhydride grafted EVA is used as the toughening compatilizer to form the antistatic toughening and reinforcing system of the polyethylene material, and finally the polyethylene material obtains the stable physical and chemical propertiesthrough the flocculating agent and the stabilizer, so that the composite polyethylene material with good mechanical properties and good antistatic properties is prepared in the case of the feeding ofa small amount of the modifier.

The invention discloses a dual-beam mutually excited multistable frequency-raising vibration energy collecting device, which comprises a shell, a driving cantilever beam I, a driving cantilever beam II and two high-frequency piezoelectric cantilever beams, wherein one end of the driving cantilever beam I is open, the driving cantilever beam I is provided with a through slot used for accommodatingthe driving cantilever beam II in a mode of extending from the open end to the other end, the open end of the driving cantilever beam I is fastened on the shell, and the other end is fixedly providedwith a counterweight block and a rubidium ferrum boron permanent magnet I; the driving cantilever beam II is located inside the through slot of the driving cantilever beam I, one end of the driving cantilever beam II is fastened on the shell, and the other end is fixedly provided with a counterweight block and a rubidium ferrum boron permanent magnet II; the two high-frequency piezoelectric cantilever beams are symmetrically arranged at two sides of a neutral surface of the driving cantilever beam I and are fixed through the shell; and a rubidium ferrum boron permanent magnet III is fixed on the shell in the extending direction of the outer end of the driving cantilever beam I. According to the invention, a cantilever beam vibrator can be avoided from being caught in a certain outer potential well to result in failure of the vibration energy collecting device through mutual excitation of the two driving cantilever beams.

The invention discloses a high-frequency pulse current and shot blasting compounding metal surface strengthening device and method. The device comprises a rotating mechanism, a nozzle, a pulse power supply, a first electric brush, a second electric brush, a first chuck, a second chuck, a first supporting base and a second supporting base, wherein the center lines of the first chuck and the secondchuck are located on the same horizontal line, the centers of the first chuck and the second chuck are opposite, the first chuck and the second chuck are used for installing a workpiece, a chuck shaftof the first chuck is rotationally connected with the first supporting base and driven by the rotating mechanism to rotate, a chuck shaft of the second chuck is rotationally connected with the secondsupporting base, the two output ends of the pulse power supply are connected with the first electric brush and the second electric brush correspondingly, the first electric brush makes contact with the first chuck, the second electric brush makes contact with the second chuck, and the nozzle is aligned with the workpiece and used for conducting shot blasting on the surface of the workpiece. According to the device, the electroplastic effect, the skin effect and the heat effect of high-frequency pulse electricity are compounded with severe plastic deformation of shot blasting, so that a thicker plastic deformation layer is obtained after shot blasting, and the shot blasting effect is better.

The invention relates to a pressed-type switch with a kick function. The pressed-type switch with the kick function comprises a shell, a button assembly and a contact assembly, wherein the button assembly is arranged in the shell in a sliding mode. The contact assembly comprises a moving contact component and a fixed contact component, wherein the moving contact component is driven by the button assembly, and the fixed contact component is fixed relative to the shell. The moving contact component comprises a moving contact and a moving contact support used for supporting the moving contact. The button assembly slides to drive the moving contact component to be contacted with or separated from the fixed contact component. A kick structure is arranged between the moving contact support and the shell. The kick structure comprises a lug and a kick assembly, wherein the lug is arranged on the shell, and the kick assembly is arranged on the moving contact support and matched with the lug. The kick assembly is made to slip along an inclined plane of the lug when the button assembly slides. The pressed-type switch with the kick function is flexible in operation, fast to assemble and low in process cost, and fast testing and slow testing can be carried out through the switch.

The invention discloses a box culvert relaying pushing system with a pushing frame assembly. The box culvert relaying pushing system is used for pushing a box culvert into a tunnel and comprises a work platform adjacent to an inlet of the tunnel, and at least two sections of box culvert bodies located on the work platform; the box culvert relaying pushing system further comprises at least one pushing device used for pushing the box culvert bodies located in front of the inlet of the tunnel, tension devices used for pulling the box culvert bodies from the second section to the n section inthe first direction, and pushing force devices used for pushing the box culvert bodies entering the inlet of the tunnel partially or totally; each tension device is connected between the correspondingtwo adjacent box culvert bodies; each pushing force device is arranged between the corresponding two adjacent box culvert bodies; each box culvert body is provided with a pushing block structure; andeach pushing device is arranged on the work platform and connected with the pushing block structure of the corresponding box culvert body. The box culvert relaying pushing system can be suitable fortunnel passing in a narrow construction site, and miniaturization of mechanical equipment is achieved.

The invention discloses a preparation method of a highly-orientated graphene / copper composite material with high thermal conductivity. The method comprises the following steps: 1, preparing a large-flake-diameter graphene oxide dispersion liquid; 2, pretreating and modifying the surface of a copper foil; 3, preparing a graphene oxide / copper foil with preferred orientation arrangement through electrophoretic deposition; and 4, sequentially conducting folding, stacking and sintering to prepare the highly-orientated graphene / copper composite material with high thermal conductivity. According to the invention, the graphene oxide / copper foil with preferred orientation arrangement is obtained on the surface of the modified copper foil by adopting electrophoretic deposition, and the foil is folded, stacked and sintered in sequence, so large-sheet-diameter graphene oxide sheets are rotated, arranged in order and recombined to form an ordered highly-orientated graphene film, the high heat conduction characteristic of graphene is exerted, and the highly-orientated graphene / copper composite material with high thermal conductivity is obtained, and the problem that dispersity and an orientation degree are difficult to control when graphene serves as a thermal-conduction reinforcing body is solved; and interface modification and three-dimensional network connection of a copper matrix are combined, and the overall strength of the graphene / copper composite material is improved.

Disclosed is a municipal crossroads structure, wherein a first artery (1) and a second artery (2) form a central platform (3) at an intersection, the first artery (1) is provided with a low tunnel (4) passing underneath the central platform (3), a cross turning tunnel (5) is diverged from the low tunnel (4), and a height of the two types of tunnels enabling vehicles to pass therethrough is no less than 2 meters and no more than 3 meters. The first artery (1) is separated by the low tunnels (4) into two ground surface lanes (7, 8) which are intended for travel in opposite directions and can be used by large vehicles, the two ground surface lanes (7, 8) are connected on the central platform (3) to form U-turn lanes (9, 10), and the U-turn lanes (9, 10) are located on left and right sides of a straight-on lane of the second artery (2) on the central platform (3). The municipal crossroads structure uses the low tunnels (4), the cross turning tunnels (5) and the central platform (3) to enable split-flow for small and large vehicles and vehicles travelling in different directions, such that a large number of small vehicles can travel without being caught in a traffic jam, and traffic is smooth across the whole crossroads.

The invention discloses a spray gun used for desulphurizing by directly spraying and blowing a magnesium desulfurizing agent to molten iron. The spray gun is composed of a connecting section, a gun body section and a spraying-blowing section. The connecting section is sequentially composed of a connecting flange and a compound gun core. The outer wall of the gun body section and the outer wall of the spraying-blowing section are made of fire resistant materials in a lining pouring manner to form a gun wall. The spraying-blowing section comprises a spraying-blowing section gun body and a special-shaped gun head arranged at the top end of the spraying-blowing section gun body. The compound gun core sequentially comprises an inner inserting pipe, a main pipe and a reinforcement pipe from inside to outside. The main pipe is inserted into an inner inserting pipe connector. The inner inserting pipe penetrates the inner inserting pipe connector and is inserted into the end of a vertical channel. A graphite spraying-blowing pipe is installed in a radial horizontal channel, extends outwards and is installed in a graphite spraying-blowing pipe installing hole in the gun wall. By means of the spray gun, smoothness of a spraying-blowing flowing channel of the spray gun is guaranteed, the comprehensive using performance of the spray gun is greatly improved, and the comprehensive aims that the service life of the spray gun is prolonged, the maintenance cost of the spray gun and the consumption of the desulfurizing agent are reduced, and the desulphurization production working rate is increased are achieved.

The invention discloses a bridge rapid detection vehicle based on multi-sensor unmanned driving. The bridge rapid detection vehicle comprises a vehicle body, a travel path detection device, a bridge detection device, a wireless network transmission device and a central controller, wherein the travel path detection device senses the surrounding environment of a travel path of a vehicle body, the central controller judges whether the vehicle body deviates from the travel path or encounters an obstacle or not, the central controller sends a control signal to a vehicle body driving part to adjustthe vehicle body travel path, the bridge detection device detects a bridge state according to the travel path state, the bridge state is sent to a management terminal through a wireless network transmission device, the management terminal observes detection data uploaded by a detection vehicle in real time, the management terminal sends a control instruction to the vehicle body through the wireless network transmission device to adjust the travel path and the travel state of the vehicle, so remote control detection is realized. The bridge rapid detection vehicle is advantaged in that a bridgecan be automatically detected, a manager can complete real-time detection of the bridge through remote operation, detection precision is high, detection is convenient, detection efficiency is improved, and manpower and material resources are saved.

The invention relates to an electronic baking device. The electronic baking device comprises an extractor and a heater; the extractor includes a baking member, and the baking member is enclosed as anaccommodating cavity for accommodating an aerosol generating substrate; the heater includes a power source assembly, and a first heating element and a second heating element arranged on the power source assembly; the first heating element extends into the accommodating cavity and heats the aerosol generating substrate, and the second heating element is located outside the accommodating cavity; wherein, when the second heating element works, the first heating element stops working. Through providing the second heating element, the residual material on the first heating element can be removed toachieve the cleaning of the first heating element; and meanwhile, in the process of removing the residual material, only the second heating element works to generate heat, and the first heating element is in a stopped state without generating heat, therefore, the working time and load of the first heating element are reduced, and the service life of the first heating element is increased.

The invention discloses an indoor tidal wave generator and a using method thereof. The indoor tidal wave generator comprises a tidal wave casing pipe system, a brine tank, a water pump, a connecting system, a half-movable rotation wheel, a motor and a transformer connected with the motor, wherein the tidal wave casing pipe system comprises an outer pipe, a base and a casing pipe installed in the outer pipe; the casing pipe is internally sleeved with an internal overflow pipe; the other end of the internal overflow pipe is sequentially communicated with the brine tank and the water pump; the other end of the water pump is communicated with the outer pipe; the connecting system comprises a support, a fixed pulley and a steel wire rope bypassing the fixed pulley; one end of the steel wire rope is connected to the top of the casing pipe, and the other end of the steel wire rope is connected to the half-movable rotation wheel which is installed at one end of a rotation rod, and the other end of the rotation rod is connected with the motor and the transformer. Each component of the indoor tidal wave generator is reasonable in configuration, is small in occupied space, is simple in structure, is low in manufacturing cost, is reliable in performance, and can be arranged flexibly, and the indoor tidal wave generator can stably generate tidal wave signal conditions with different cycles, amplitudes and water levels, and also can overcome the inhibition of the casing pipe, so that the tidal wave signal is relatively stable.

The invention discloses an antibacterial biofilm composite microneedle and application thereof. The preparation method of the microneedle comprises the following steps: S1, dissolving chitosan and zinc nitrate in water, and performing defoaming in vacuum to obtain a chitosan-zinc nitrate composite solution; and S2, coating a PDMS microneedle mold with the chitosan-zinc nitrate composite solution obtained in the step S1, and carrying out filling, drying and stripping so as to obtain the antibacterial biofilm composite microneedle. The microneedle can pierce a bacterial biofilm and promote chitosan and Zn<2+> with antibacterial performance to be conveyed into the bacterial biofilm, the performance of the chitosan and Zn<2+> antibacterial biofilm is remarkably improved, the bacterial biofilmis effectively removed, and then rapid healing of chronic difficult-to-heal wounds is promoted. In addition, the preparation method of the microneedle is simple, low in cost, rich in raw material source and high in safety. Therefore, the microneedle has a wide application prospect in removing a bacterial biofilm or preparing a bacterial biofilm scavenger and preparing a chronic difficult-to-heal wound repair material.

The invention discloses a torrent tank capable of automatically cleaning for highway engineering. The torrent tank comprises at least two torrent tank units, wherein each torrent tank unit comprises atorrent tank base, a cleaning device and protection plate units arranged along the two sides of the extension direction of the width of the torrent tank base; a semicircular arc-shaped groove is formed in the right end of a rectangular boss along the extension direction of the width of the rectangular boss; the cleaning device comprises a rotating shaft and a baffle plate; the baffle plate comprises a baffle plate I and a baffle plate II; a permanent magnet I is arranged on the top end of the baffle plate I; and permanent magnets II which have the same magnetic pole as the permanent magnet Iare symmetrically arranged on the inner wall of the semicircular arc-shaped groove in a uniformly-spaced manner. The torrent tank provided by the invention can not only automatically clean the garbagein the torrent tank, but also does not use electricity in the entire cleaning process, thereby avoiding the wasting of electricity; the using safety of the cleaning device is also improved; and the torrent tank can be recycled and is convenient to dismantle, maintain and transport.

The invention discloses a continuous bubble scraping type multilayer inflatable bottom transmission type flotation machine. The flotation machine comprises a flotation groove; a mechanical stirring device, an annular column type micro-bubble generator and a bubble scraping device are arranged inside the flotation groove; the mechanical stirring device is located below a mineralized bubble foam layer; the annular column type micro-bubble generator is arranged on the periphery and the upper part of an impeller in a three-layer annular column type mode, air is transversely led into a bottom circular ring of the micro-bubble generator through an opening in the side part of the bottom of the flotation groove, and the purpose of inflation is achieved; the bubble scraping operation adopts two scraping plates for continuous scraping alternatively, and a long-stroke transmission belt wheel is matched. According to the flotation machine, the existing flotation machine mechanical stirring deviceis arranged at the bottom, the problems of middle foam stagnation and secondary sedimentation of mineralized particles are solved, so that the flotation index is improved; the annular column type micro-bubble generator is used as an air inflation device so that the diameter of the bubbles can be reduced, the sedimentation area is reduced, and the foam layer is stable and controllable; and the scraping plates of the flotation machine are two alternative scraping plates, and the belt wheel transmission is adopted, so that the mineralized foam can be timely and continuously scraped, the secondarysedimentation is prevented, and the flotation recovery rate is improved.

The invention discloses a chair with the massage function and relates to the technical field of chairs. The chair comprises a chair body, a cushion is arranged on a backrest of the chair body, a neckkneading mechanism used for kneading the neck is arranged on the upper portion of the back side of the backrest of the chair body, a back pounding mechanism used for pounding the cushion is arranged in the middle of the back side of the backrest of the chair body, and a waist pressing mechanism used for pressing the cushion is arranged on the lower portion of the back side of the backrest of the chair body. By means of the neck rubbing mechanism, the back pounding mechanism and the waist pressing mechanism which are arranged on the backrest of the seat, a user is massaged in multiple directions, the massage mode is increased, and the functionality of the seat is improved.