82results about How to "Achieve drop" patented technology

The invention relates to a horizontal well directional sand blasting perforation and fracturing integral tool pipe column and a construction method thereof. The tool pipe column comprises a safe joint, a first centralizer, a first rotating joint, a hydraulic sand blasting device, a second rotating joint, a second centralizer, a packer, a coupling positioning device and a guiding shoe, wherein the safe joint is arranged at the left end of the tool pipe column; the guiding shoe is arranged at the right end of the tool pipe column; the left end of the safe joint is connected with an oil pipe; the first centralizer, the first rotating joint, the hydraulic sand blasting device, the second rotating joint, the second centralizer, the packer and the coupling positioning device are sequentially arranged between the right end of the safe joint and the guiding shoe from left to right. The horizontal well directional sand blasting perforation and fracturing integral tool pipe column and the construction method provided by the invention have the advantages that the structure of the tool pipe column is simple; the directional san blasting perforation can be realized; the stratum energy is released to the greatest degree; the problem of shot hole compression zone of gunpowder perforation can be solved.

The invention relates to an elastic piece ball mill which mainly comprises a rack, a driving motor, a bearing, a tank body, a casing and a grinding medium, wherein the tank body is wrapped with the casing arranged on the rack; the casing is connected to the bearing through a shaft, and can rotate along the bearing; elastic mechanisms are arranged on the inner peripheral wall of the tank body; each elastic mechanism comprises an elastic piece and a lifting rod; strong magnetic pieces are arranged at the bottoms of the lifting rods; strong magnets opposite to the strong magnetic pieces one to one are arranged on the lower half cylindrical surface of the inner wall of the casing; the magnetism of each strong magnet forms homopolar repulsion or heteropolar attraction with that of the strong magnetic piece opposite to the strong magnet. According to the ball mill, the grinding medium can be actively ejected to increase impact force after reaching a certain height, and in addition, materials can be completely dispersed to be ground more completely; the materials can be ground at higher speed.

The invention relates to an intelligent air flotation device for sewage treatment which is convenient for collecting scum, including a sewage tank, an air flotation machine, a filter plate, an annular plate and three moving mechanisms. The mechanism includes a floating block, a notch, an opening, a vertical bar and a limit assembly. The moving mechanism includes a translation assembly and a lifting assembly. The lifting assembly includes a first motor, a first drive shaft, a wire reel, and a suspension wire. The intelligent air flotation device, which is convenient for collecting scum, realizes through the closing mechanism that after the filter plate is separated from the liquid surface, the floating blocks block the openings and notches, so that the scum can stop on the filter plate and realize solid-liquid separation. When separating, the filter plate moves upward, so that the equipment can treat different sewage volumes. Not only that, the three moving mechanisms drive the filter plate to lift and move, and control the inclination of the filter plate, so that the scum can flow from the opening on the ring plate. It can be dropped anywhere, which is convenient for people to collect, thus improving the practicability of the device.

The invention relates to the field of the streetlamp, and specifically discloses a multifunctional streetlamp for preventing fog and haze. The streetlamp comprises a streetlamp main body and an air purification device arranged at the top of the streetlamp body; the air purification device comprises a filtering tunnel, a large aperture end of the filtering tunnel communicates with an air inlet tube, and the small aperture end of the filtering funnel communicates with the exhaust pipe; an air inlet fan is arranged in the air inlet tube, and an exhaust fan is arranged at an air outlet of the exhaust tube; a double-shaft extension motor for driving the air inlet fan and the exhaust fan to synchronously rotate is arranged at a connecting part of the filtering tunnel and the exhaust tube througha strut; a filtering screen is fixedly arranged in the filtering funnel, and a cleaning module for cleaning a filtering surface is further arranged on the filtering screen. Through the multifunctional streetlamp disclosed by the embodiment of the invention, the dust in the air can be filtered and collected, and the streetlamp main body can be cooled, thereby guaranteeing the normal use of the streetlamp main body.

The invention provides a feeding mechanism in a paper cup tapping device, and belongs to the technical field of machinery. The feeding mechanism solves the technical problems that an existing cup feeding device cannot convey paper cups tidily one after the other, and the paper cups need to be tidied manually, so that the production efficiency is low, and the like. The feeding mechanism in the paper cup tapping device is arranged at the tapping device and comprises a cylindrical cup storing barrel and a horizontally arranged mounting plate; the mounting plate is provided with through discharge holes; the lower end of the cup storing barrel is fixedly connected to the upper part of the mounting plate; the cup storing barrel is communicated with the discharge holes; the lower part of the mounting plate is provided with at least three feeding rods; a positioning part used for being clamped at the convex edge of a paper cup opening is formed among the feeding rods; the lower part of the mounting plate is also connected with a turntable; the turntable is linked with a power piece capable of controlling the turntable to intermittently rotate; the part, close to the edge of the turntable, of the turntable is circumferentially and uniformly provided with a plurality of positioning holes for positioning the paper cups by taking the center of the turntable as a datum. The feeding mechanism has the advantages of high feeding efficiency and good guiding effect.

The invention discloses an artificial board hot-pressing conveying system. The artificial board hot-pressing conveying system comprises a conveying rack, wherein the conveying rack consists of three horizontal conveying drum sections; a scraping mechanism is connected between the first horizontal conveying drum section and the second horizontal conveying drum section; the second horizontal conveying drum section is connected with the third horizontal conveying drum section through a board turning and cooling mechanism; a scattering assembly is arranged at an arc end of the first horizontal conveying drum section; a stopping claw is arranged between the scattering assembly and the scraping mechanism and is hinged to a connecting rod of a cylinder; a transverse sliding table is arranged on arack of the scraping mechanism; a roller is arranged on the transverse sliding table; a support is arranged on a side of the transverse sliding table; a roller is arranged on the support; and brushesare uniformly distributed on the roller. The conveying system can rapidly sort and scatter unqualified bamboo-wood boards, the bamboo-wood boards are deburred and cooled so as to finish automated processing on the bamboo-wood boards, the production efficiency is high, working procedures are simple, potential safety hazards do not exist, and the labor intensity of operation is small.

The invention relates to a hydraulic micro-rotation safety joint for a downhole tubular column. The hydraulic micro-rotation safety joint comprises an upper joint and a lower joint, wherein central holes of the two joints share the same axis and are communicated mutually. A cylinder extending upwardly is arranged at the upper end of the lower joint. A sliding sleeve that can slide axially along the inner wall of the cylinder is installed in the inner cavity of the cylinder, wherein the central hole of the sliding sleeve is reduced gradually from top to bottom; a ball base in a horn shape is arranged at the lower end of the sliding sleeve; the ball base is provided with a matched steel ball for turning off the ball base; and the mouth of the lower end of the ball base is communicated with the central hole formed in the lower joint. The outer wall of the lower end of the sliding sleeve is fixed on the cylinder by a shearing pin. The e lower part of the upper joint is inserted into the cylinder and is embedded with the inner wall of the cylinder after rotation; and the lower end of the upper joint is plugged with the upper end of the sliding sleeve by a spline. An upper joint outer step is arranged at the middle part of the upper joint and is pressed on the upper port of the cylinder, wherein the diameter of the part under the upper joint outer step is reduced gradually. The innercavity of the cylinder is reduced gradually from top to bottom. The safety joint is operated conveniently and is protected from being affected by the friction of the tubular column and the well deviation; and the disconnection success rate is high.

The invention provides an anti-erosion and no sand card fracturing sliding bush which can be connected with an oil pipe and arranged inside a bushing. The anti-erosion and no sand card fracturing sliding bush compromises a shell body. The upper end of the shell body is connected with an upper contact, and the lower end of the shell body is connected with a closed outer cylinder. A plurality of open holes is arranged on the circumferential direction of the closed outer cylinder. The outer shell is provided with a movable piston cylinder. The anti-erosion and no sand card fracturing sliding bush also compromises a sand blasting body. The upper end of the sand blasting body is stuck between the shell body and the piston cylinder. The upper end of the sand blasting body is connected with a lower contact. A nozzle is embedded inside the sand blasting body. The nozzle is provided with a plurality of bell shaped spray holes along the circumferential direction. The spray holes can be communicated with the open holes. The inside of the sand blasting is provided with sliding bush which is used for sealing the spray holes, and the sliding bush is connected with the lower contact detachably. The anti-erosion and no sand card fracturing sliding bush has the advantages of being capable of reducing casing damage during fracturing, and avoiding the sand card when lifting the pope, being thorough in back flushing, and high efficient in fracturing.

The invention provides an inclined disc tool magazine. The tool magazine comprises a tool magazine body; a support is welded at the bottom of the tool magazine body and is connected with a base; the tool magazine body comprises a central seat and tool rests; circular grooves are formed in the tool rests; tools are arranged in the circular grooves; clamping devices corresponding to all the circulargrooves are arranged on the central seat; two symmetric clamping rods of each clamping device are arranged on two sides of each circular groove, and ends, close to each other, of the clamping rods are arranged on the central seat through a rotating shaft; springs are arranged between the central seat and the tool rests; and symmetric sliding blocks are arranged between the springs and the centralseat. The inclined disc tool magazine is simple in structure and has the better tool changing effect on the machining tool having the certain inclination angle, the tool changing process is smooth, the stability is better, the precision is higher, the tools in the tool magazine are not prone to loosening, tool changing in the inclined state can be realized conveniently and quickly, the tool changing efficiency is improved, and the production cost is reduced.

The invention relates to the field of infusion filter production. Infusion filter production equipment comprises a machine fame, and a turntable assembling apparatus, a lower cover feeding apparatus,a filter membrane conveying apparatus, a filter membrane punching apparatus, an upper cover feeding apparatus, an upper cover pressing apparatus and a material outlet apparatus which are mounted on the machine frame, wherein a position of the lower cover feeding apparatus is matched with that of a lower cover feeding station, a position of the filter membrane conveying apparatus is matched with that of a filter membrane feeding station, the middle part of the filter membrane conveying apparatus is connected with the filter membrane punching apparatus, a position of the upper cover feeding apparatus is matched with that of an upper cover feeding station, a position of the upper cover pressing apparatus is matched with that of an upper cover pressing station, and a position of the material outlet apparatus is matched with that of a material outlet station. The production equipment can automatically complete the assembling of a lower cover, a filter membrane and an upper cover of an infusion precision filter, and is reasonable in layout, compact in structure and high in production efficiency.

The invention relates to a cleaning and classification device for a drilling machine. The cleaning and classification device comprises a base, a stand column, a cross beam, a cylinder, a drill bit, acleaning device and a classification mechanism. A cleaning mechanism comprises a connecting rod, a fixing plate and a cleaning assembly. The classification mechanism comprises a baffle, a cover plate,a metal filter screen, a turning cover plate, a driving assembly and a driven assembly. According to the cleaning and classification device for the drilling machine, the cleaning of the drill bit isrealized through the cleaning mechanism, and iron scraps or copper scraps on the drill bit are caused to fall onto the base better; the separation of the iron scraps and the copper scraps is achievedthrough the classification mechanism, so that an operator does not need to clean a machine tool before machining copper and iron workpieces in the process of copper and iron workpiece machining, the operation time is saved, and the labor intensity is reduced; and compared with an existing classification mechanism, the classification mechanism achieves the vibration of the metal filter screen through a cam, the vibration effect of the metal filter screen is improved through a returning assembly, micro vibration of the metal filter screen is achieved, and the using practicability is improved.

A rotary indexing device is used for indexing and rotating a workbench during multi-station processing and is composed of the workbench, an upper toothed disk, a lower toothed disk, a frame, a lifting / descending oil cylinder, a gear, a rack oil cylinder and a drive pin disk, wherein during working, oil is fed by a lower chamber of the lifting / descending oil cylinder and returned by an upper chamber; the workbench and the drive pin disk move up and the upper toothed disk and the lower toothed disk are disconnected; a drive pin is inserted into a drive pin hole formed on the end surface of the gear, oil is fed by the lower chamber of the lifting / descending oil cylinder and returned by the upper chamber and the rack moves forward to drive the gear to realize the rotary indexing of the workbench; at the arrival of a specified indexing angle, oil is fed by the lower chamber of the lifting / descending oil cylinder and returned by the upper chamber, and the workbench and the drive pin disk move downward; the upper toothed disk and the lower toothed disk are engaged and positioned, thus the indexing precision is guaranteed; the drive pin is pulled out of the drive pin hole on the end surface of the gear, then oil is fed by a rear chamber of the rack oil cylinder and returned by a front cylinder; the rack falls back to an original position and then stops, at this moment, the gear rotates clockwise on idle around a lifting piston rod and makes preparation for next rotary indexing.

The invention discloses a polishing machine for automobile manufacturing. The polishing machine comprises a bottom box; two symmetrical supporting rods are fixedly connected with the outer side surfaces of the bottom box; grooves are formed in one side surfaces, close to each other, of the two supporting rods; a top plate is arranged on the supporting rods; the upper surface of each supporting rodis fixedly connected with the bottom surface of the top plate; and two symmetrical first through holes are formed in the upper surface of the top plate. The polishing machine for the automobile manufacturing can polish materials on the bottom box, a movable plate can be lifted up and fall down, to-be-polished materials can be subjected to the polishing treatment better, movement of the movable plate and limitation to the position of the movable plate are achieved better, the movable plate is prevented from rotating with the rotation of a motor, the to-be-polished materials can be pressed andfixed and are prevented from falling in the moving process of the movable plate, the materials can be fixed when the movable plate falls down, and the position of the movable plate can be recovered when the movable plate is lifted up so that the use next time is facilitated.

The invention relates to the technical field of agricultural machines, in particular to a corn stubble harvester. The corn stubble harvester mainly comprises a collecting box, a bogie, a speed reducer, a stubble pickup device, a primary stubble pulling device, a grinding roller grid soil removing mechanism, a secondary stubble pulling device, a secondary driving system and a primary driving system. A rotary component is mainly designed according to the shape and dimension of root and soil composites of corn stubbles, and stirring fingers, grinding roller fingers and stubble pickup tools similar to fingers are arranged on the rotary component. In the rotating process of the work components, the stirring fingers, the grinding roller fingers and the stubble pickup tools are used for constantly stirring and throwing the root and soil composites. The root and soil composites are impacted, ground and rubbed, the inner structures of the root and soil composites are damaged, the root and soil composites are loosened, soil falls off, finally, the stubbles separated from the soil are conveyed into the collecting box, and the corn stubbles are harvested.

The invention discloses football training equipment and a use method thereof. The football training equipment comprises a bottom plate, a training goal is welded at an upper side of one end of the bottom plate, a support plate is welded at the upper side of the training goal, and a heading training module is arranged at a top end of the support plate. The football training equipment disclosed by the invention is scientific and reasonable in structure, safe and convenient for use; the same training apparatus can be used for training the heading capacity, the leg strength and the shooting precision of a football player by arranging the heading training module, a loading module and the training goal; the multifunctionality of the training equipment is realized, and the interestingness of thefootball training is increased, the condition that the enthusiasm of the player takes a knock due to boring training is avoided, and the training effect is effectively improved; a location of a fixedpoint heading plate can be adjusted by arranging the heading training module when the player performs the heading training, and the heading capacity at various angles when the player performs the heading training is improved.

The invention relates to a cotton cleaning device, in particular to a cotton breakage preventing and impurity removing device. The cotton breakage preventing and impurity removing device comprises a primary conveying mechanism, a thickness adapting mechanism, a cotton ball flat spreading mechanism, a lengthening output mechanism, a lifting mechanism and an impurity removing mechanism, wherein thethickness adapting mechanism is fixedly installed on the primary conveying mechanism; the cotton ball flat spreading mechanism is fixedly installed on the thickness adapting mechanism; the lengtheningoutput mechanism is fixedly installed on the thickness adapting mechanism; the lengthening output mechanism is fixedly installed on the primary conveying mechanism; the lifting mechanism is fixedly installed on the primary conveying mechanism; and the impurity removing mechanism is fixedly installed on the lifting mechanism. According to the device, gathered cotton can be flatly spread and then impurities mixed in the cotton are gradually removed, so that the damage to cotton silk can be reduced in the impurity removing process, and the processing quality of the cotton is guaranteed.

The invention discloses a bridge plug capable of washing sand, and belongs to the technical field of oilfield exploitation. The bridge plug capable of washing the sand comprises an upper connector, anupper central pipe, an intermediate central pipe and a lower central pipe, wherein the upper connector, the upper central pipe, the intermediate central pipe and the lower central pipe are sequentially connected from top to bottom in a threaded mode; a ball seat is connected to the inner side of the lower end of the lower central pipe in a threaded mode, an insertion pipe is connected to the lower end of the ball seat in a threaded mode, and a self-locking head is arranged at the lower end of the insertion pipe; a switch slide sleeve is arranged in a switch connector, a positioning self-locking switch is arranged at the upper end of the switch slide sleeve, and first sand-washing channels are arranged on the switch slide sleeve and an intermediate connector correspondingly; and a sand-washing outer sleeve is connected to the outer part of the intermediate connector in a threaded mode, an inclined-port guide shoe is connected to the lower end of the sand-washing outer sleeve in a threaded mode, and a second sand-washing channel is arranged in the inclined-port guide shoe. On the whole, the bridge plug capable of washing the sand realizes sealing of a stratum through a pipe column,and no special sand-washing tool is required to be lowered; two-stage of pistons and three sets of rubber barrel structures are adopted in the bridge plug, setting is reliable, and the success rate ishigh; and the switch slide sleeve is reliable in sealing, can withstand two-way pressure difference and has high pressure bearing, the working procedure is simplified, the construction cost rate is improved, and the operation risk is reduced.

The invention relates to the technical field of castor harvesting machinery, in particular to a combine harvester capable of separating castor seeds from castor stalks. The combine harvester comprises a harvesting assembly and a driving vehicle, wherein the harvesting assembly comprises a rack and a plurality of dividers installed on the front portion of the rack side by side, entering channels narrowing from wide are formed among the dividers, cutting knives are arranged among the dividers, stalk moving units are horizontally arranged behind the cutting knives, and castor seed conveying units are arranged on the two sides of each stalk moving unit; pressing devices are fixedly installed on the rack, a head portion narrowing from wide is arranged at the end, close to the corresponding divider, of each pressing device, a separating mechanism used for separating castor seeds is arranged on each pressing device, each separating mechanism comprises a vibration generating unit and a pneumatic separating unit, each vibration generating unit is used for shaking stalks, and each pneumatic separation unit is used for blowing air to the castor seeds. According to the technical scheme, the technical problem how to enable the castor seeds to accurately and efficiently fall into the castor seed conveying units and to be separated from stalks is solved.

The invention discloses a filling pile construction scheme and a funnel thereof. The filling pile construction scheme is characterized in that an outlet is formed in the bottom of a funnel body, a sphere which is located in the outlet and adapts to the funnel body is lifted in the funnel body, a lifting rope which is fixed to the sphere is arranged on the sphere, a block is fixed to one end, whichis far from the sphere, of the lifting rope, cross rods are arranged on the top of the funnel body, the cross rods include a fixed rod and a movable rod, a gap which is used for the lifting rope to pass through is formed between the ends of the fixed rod and the movable rod, the width of the gap is less than the block, a vertical guide groove is formed in the funnel body, a floating block is arranged in the guide groove, and a linking mechanism which is used for linking one end, which is close to the fixed rod, of the movable rod to move away when the concrete level in the funnel body reachesthe preset height is arranged on the floating block; concrete is continuously added to the funnel body, the concrete level in the funnel body continuously rises, the floating block continuously movesupwards until the level rises to the preset height, and then the end of the movable rod is linked to move away, so that the block falls off; and at the moment, the sphere and concrete are dischargedfrom the outlet together, and the lifting rope does not need to be manually sheared off, so that the operation is convenient.

The invention discloses an agricultural deep tillage and fertilization integrated device based on vibrational soil throwing. The device structurally comprises a seedling feed rack, a control handle and a insertion head, wherein the seedling feed rack is in track connection with the control handle and is in drive connection with the insertion head, the control handle is buckled with the insertion head, the seedling feed rack comprises a seedling feed head, a limit plate, a barrel support and a screw head device, the seedling feed head is in embedded connection with the barrel support, the limitplate is welded with the barrel support, and the barrel support is provided with the screw head device. According to the device, the insertion head is inserted into soil, the l insertion head moves upwards while inserted into the soil to realize buckling of an opening and closing circular shaft and a shaft embedding device, the screw head device drives the insertion head to rotate, then the device is pulled up to drive the insertion head to move upwards, a pressing device is pressurized during upward moving of the insertion head to drive a vibration body to move downwards and a vibrator to vibrate, and soil is thrown out; the attached soil can be effectively thrown out when the insertion head is inserted into relatively wet soil and pulled up, no soil is attached to the outer surface of the insertion head when the insertion head is inserted into the soil again, resistance is reduced, and operation by workers is more labor-saving.

The invention discloses an automatic greenhouse based on electromagnetic suction, and relates to the technical field of agricultural equipment. The automatic greenhouse comprises a supporting wall, a vaulting shaft, a base and a heat preservation quilt. A folding rod is arranged on the top of the supporting wall and used for folding and unfolding the heat preservation quilt; one end of the vaulting shaft is connected with the supporting wall, the other end of the vaulting shaft is fixed to the base, a layer of electromagnetic coil is wound around the surface of the vaulting shaft, and the heat preservation quilt is sucked and fixed after being powered on; The folding rod and a screw rod are drive by a motor to fold or unfold the heat preservation quilt. By arranging the motor, the folding rod and the screw rod, the heat preservation quilt can be folded and unfolded, the automatic greenhouse has the advantages of being simple, practical and easy to operate, the distance between the heat preservation quilt and the vaulting shaft is limited through a pressing rod, the layer of electromagnetic coil is wound around the surface of the vaulting shaft, and an iron sheet on the heat preservation quilt is attracted through electromagnetism, so that the heat preservation quilt is fixed, a film can be fixed without manpower, operation procedures are simplified, workloads of workers are reduced, and the working efficiency can be improved.

The invention belongs to the technical field of industrial wastewater treatment, and particularly discloses an industrial-high-salinity-wastewater desalting system. The industrial-high-salinity-wastewater desalting system comprises a shell, a microwave generating system, a heating system, a spraying system, an inner container, an extruding ring, sliding blocks, lead screws, bearing bases and a containing plate; the inner container is arranged on the inner wall of a cavity in the upper end of the shell; the sliding blocks are slidingly installed in rectangular grooves in the left side and the right side of the shell; one ends of the sliding blocks are fixedly connected with the surface of the outer side of the extruding ring, and the other ends of the sliding blocks are connected with the lead screws through a ball screw nut pair. According to the industrial-high-salinity-wastewater desalting system, the inner container is arranged on the inner wall of the cavity of the upper end of theshell, the extruding ring is arranged on the surface of the outer side of the inner container, extrudes the surface of the outer side of the inner container, the surface of the inner side of the inner container is deformed, it is achieved that industrial salt crystalline particles attached to the surface of the inner side of the inner container fall out, thus rapid cleaning of the industrial saltcrystalline particles on the surface of the inner container is achieved, cleaning is quite convenient, and a large amount of labor cost is not required to be used for cleaning.

The invention belongs to the technical field of general processing equipment for food or foodstuffs, and discloses Kaoliang spirit raw material processing equipment. The Kaoliang spirit raw material processing equipment comprises a rack and a washing bucket; the rack is further rotatably connected with a rotating shaft driven by a motor; a plurality of stirring blades are fixed to the lower portion of the rotating shaft; a discharging outlet is formed in the lower portion of the side wall of the washing bucket; a supporting plate is slidably connected into the washing bucket, springs are arranged between the bottom of the supporting plate and the bottom of the washing bucket, and a pushing rod is fixed to the bottom of the supporting plate; a water pump is further fixed to the rack and communicates with the washing bucket through a guiding pipe, and a rotating valve is arranged on the guiding pipe; a liquid guiding bucket is fixed to the outer wall of the washing bucket and internallyprovided with a sliding plate, and a pushing rod is fixed to the sliding plate; and the upper portion of the liquid guiding bucket communicates with the upper portion of the washing bucket, and a liquid outlet is further formed in the liquid guiding bucket. The problems that in the prior art, when water is drained from a water outlet, part of dust continues adhering to the surfaces of Kaoliang grains, and consequently washing is incomplete are solved.

The invention discloses an automatic plate-turning door synchronously controlled by double direct current brushless motors. The automatic plate-turning door comprises a central processing unit, a power driving circuit, a signal detection circuit and a door plate, wherein the central processing unit is connected with the power driving circuit; the power driving circuit drives the motors to work; the signal detection circuit is used for obtaining the signal of the power driving circuit, the signal of the first direct current brushless motor and the signal of the second direct current brushless motor, and transmits the signals to the central processing unit; after the central processing unit implements analyzing, the power driving circuit is controlled to synchronously drive the first direct current brushless motor and the second direct current brushless motor; the first direct current brushless motor is used for driving a left rotary shaft arranged above the left side of the door plate; the second direct current brushless motor is used for driving a right rotary shaft arranged above the right side of the door plate; the central processing unit can control the first direct current brushless motor and the second direct current brushless motor to synchronously work, so that door opening or closing is realized. By applying the automatic plate-turning door, the closing and opening of the door plate can be completed in a narrow space.

The invention discloses a forestry pest control device based on the Internet, and belongs to the field of pest control. A forestry pest control device based on the Internet comprises a body cylinder, the inner wall of the body cylinder is rotatably connected with a guide rail ring, the inner ring of the guide rail ring is fixedly sleeved with a mounting plate, two through holes are formed in the surface of the mounting plate in a penetrating mode, and a power grid is arranged in one of the through holes; one side of the body cylinder is rotationally connected with a lead screw, and one end of the lead screw is fixedly connected with a first gear. Through the arrangement of the mounting plate, the lead screw, the bristles and the mounting cylinder, compared with the prior art, the device achieves power grid cleaning through treading of garden passengers, time and labor are saved, the labor intensity of forestry maintenance personnel is greatly reduced, while insect bodies fall off, an iodophor solution is automatically sprayed out from the bottom of a liquid outlet nozzle, and the safety of the device is improved. And therefore, the dead bodies of the insects are thoroughly sterilized and disinfected, and secondary damage to plants caused by bacterium breeding is prevented.

The invention discloses a baby milk brewing machine. The machine comprises a housing. A milk powder box assembly used to discharge milk powders, a water tank, and a mixer used to mix water with the milk powders are arranged in the housing. The milk powder box assembly comprises an outer box body, an inner box body, and a material box. Three material storage cavities are formed on the material box.A rotating valve block is rotatably connected with the inner bottom of the material storage cavity. The upper end of the rotating valve block is connected with a catch and a powder stirring rotatingdisk. The side wall of the material storage cavity is provided with a catch vent groove. A material blowing channel is formed between a baffle and the catch. A main cavity is internally provided witha motor used to drive the material box and the rotating valve block to rotate. When the motor rotates forward, the motor drives the material box to rotate, so as to switch over the material storage cavity. When the motor rotates reversely, the rotating valve block is driven to rotate, so that the milk powders are discharged from the material storage cavity and fall into the mixer.

The invention is suitable for the technical field of engine filters, and provides a filter element assembly which comprises a buffer plate, a filter screen, an air supply assembly and an impact piece, and the buffer plate is arranged in an inner cavity in one side of a first shell through an elastic piece; the filter screen is obliquely arranged in an inner cavity on the other side of the first shell; the air supply assembly is in linkage with the buffer plate, and when the buffer plate generates displacement in the first shell, the air supply assembly supplies air into a pneumatic motor so that an output shaft of the pneumatic motor can rotate; the impact piece is arranged in the first shell, the impact piece comprises a rotating disc which is coaxially and fixedly mounted on the output shaft of the pneumatic motor, and a convex column is eccentrically mounted on the rotating disc; and the impact piece further comprises an impact ball arranged in the first shell in a swinging mode, and the released impact ball knocks the filter screen. The embodiment of the invention further provides an engine filter using the filter element assembly.

The invention discloses a reinforcing mesh dropping device which comprises a bottom frame and an upper frame. The bottom frame and the upper frame are connected through stand columns. At least two supports are welded to the interior of the bottom frame. Each support is provided with a rotating shaft. A clamping device is arranged at the lower portion of each rotating shaft. A rotating device is installed at the upper end of each rotating shaft. Hoist pans are installed on the upper frame. According to the reinforcing mesh dropping device, multiple reinforcing meshes are clamped through multiple layers of clamping jaws on sleeves, the whole device is hoisted to the position where the reinforcing meshes need to be placed through the hoist pans on the upper frame, the rotating shafts are driven to rotate positively and negatively by rotating gears, and therefore the reinforcing meshes are lifted and dropped. The reinforcing meshes do not need to be laid into a die one by one through manual work, the labor intensity of workers is lowered, the production efficiency is improved, the production cost is reduced, very good economic benefits and social benefit are achieved, and automatic production of cement prefabricated slabs is facilitated.

The invention relates to a horizontal well directional sand blasting perforation and fracturing integral tool pipe column and a construction method thereof. The tool pipe column comprises a safe joint, a first centralizer, a first rotating joint, a hydraulic sand blasting device, a second rotating joint, a second centralizer, a packer, a coupling positioning device and a guiding shoe, wherein the safe joint is arranged at the left end of the tool pipe column; the guiding shoe is arranged at the right end of the tool pipe column; the left end of the safe joint is connected with an oil pipe; the first centralizer, the first rotating joint, the hydraulic sand blasting device, the second rotating joint, the second centralizer, the packer and the coupling positioning device are sequentially arranged between the right end of the safe joint and the guiding shoe from left to right. The horizontal well directional sand blasting perforation and fracturing integral tool pipe column and the construction method provided by the invention have the advantages that the structure of the tool pipe column is simple; the directional san blasting perforation can be realized; the stratum energy is released to the greatest degree; the problem of shot hole compression zone of gunpowder perforation can be solved.

The invention provides a small three-station drilling machine for metalworking training. The drilling machine comprises a machine base, a drill bit is arranged on the upper portion of the machine base, a rotation three-face work table is arranged in the middle of the machine base, three work tables of the three-face work table are each provided with a hammer head part tool, a round plate part tooland a general T-shaped groove plate, the three-face work table is connected with the machine base through a fixing part, and a chip collection device is arranged on the lower portion of the machine base; the drilling machine has the beneficial effects that the three-face work station enables the drilling machine to be suitable for different work modes, the chip collection device can achieve cleaning and collection of cuttings, the hammer head part tools can improve the drilling efficiency of the students, falling of a hammer during machining can be avoided, precise positioning, measuring anddrilling of the hammer head can be facilitated, the round plate part tool can meet the needs of students for art display round plate positioning and drilling.