71results about How to "Rotate labor-saving" patented technology

The invention relates to tent accessories, in particular to a companding type ground anchor. The ground anchor is composed of a draw hook, an inner blind nut, a round head square column, a loop bar, rotating shafts, riveted plates, side hole, a nail and a positioning screw. A square hole is formed inside the loop bar; two rectangular openings are respectively formed on the both sides of the middle part of the loop bar; and the upper top surface of the nail in the space where the rectangular openings on the both sides of the middle part of the loop bar are intersected with the vertical square hole inside the loop bar is an upward edge formed by two left and right symmetrical inclined surfaces. Two rotating shafts are arranged at the bottom end of the round head square column, and each rotating shaft is sleeved with one riveted plate. The part under the circular cylinder of the round head square column is positioned in the square hole of the loop bar, and forms the movable fit with the loop bar; and the inner blind nut is sleeved on the circular cylinder at the top end of the round head square column, and is combined with the circular cylinder through threads. The ground anchor has the advantages of very firm anchoring, convenient disassembly and high integrity.

The invention belongs to the field of centrifugal pumps and particularly relates to a series-parallel connection centrifugal pump which has the flow channel series-parallel connection switching capacity. The series-parallel connection centrifugal pump comprises a pump body and a pump shaft. The pump shaft is provided with two impeller parts, and a first cavity channel and a second cavity channel are formed in a pump cavity corresponding to the two impeller parts. A first bypass flow channel, a second bypass flow channel, a first liquid outlet flow channel and a second liquid outlet flow channel are formed in the pump body, wherein the first bypass flow channel and the second bypass flow channel are used for communicating an outlet of an external liquid inlet pipeline and an inlet of the first cavity channel as well as the outlet of the external liquid inlet pipeline and an inlet of the second cavity channel respectively, and the first liquid outlet flow channel and the second liquid outlet flow channel are used for communicating an inlet of the external liquid outlet pipeline and an outlet of the first cavity channel as well as the inlet of the external liquid outlet pipeline and an outlet of the second cavity channel. A branch flow channel is further arranged in the pump cavity, one end of the branch flow channel is communicated with a liquid inlet of the second cavity channel, and the other end of the branch flow channel is communicated with the first liquid outlet flow channel to form a three-way joint. The series-parallel connection centrifugal pump further comprises a switching part, a switching assembly is arranged at the second liquid outlet flow channel, and the switching assembly and the switching part are in electric linkage or mechanical linkage. Due to the linkage structure, the series-parallel connection centrifugal pump is reasonable and practical in structure, long in service life and reliable and stable in work.

The invention discloses a box body rotary type file cabinet convenient for quick consulting, which comprises an outer cabinet body, a stand column is arranged in an inner cavity of the outer cabinet body, a plurality of fixing rods are arranged in the middle of the outer circular surface of the stand column in a circular array, the overhanging ends of all the fixing rods are fixedly connected witha side sliding rail, and a bottom sliding rail is arranged on the bottom wall of the inner cavity of the cabinet body. A plurality of inner cabinet assemblies matched with the side sliding rails areconnected to the top ends of the bottom sliding rails in a sliding mode, and a power mechanism matched with the inner cabinet assemblies is arranged in an inner cavity of the outer cabinet body; various files are stored in each inner cabinet assembly; when files are inquired, the user only needs to stand in front of the cabinet and then directly inquire the files in the inner cabinet assembly; meanwhile, the power mechanism drives the inner cabinet assemblies to slide along the bottom sliding rails and the side sliding rails, so that the different inner cabinet assemblies rotate in sequence, aworker can query all the inner cabinet assemblies without moving, the file query work efficiency is greatly improved, and the application convenience of the whole device can be greatly improved.

The invention relates to the field of assembling tools, and aims to provide an adjustable wrench head of a torque wrench. The adjustable wrench head of the torque wrench comprises a connection rod, two wrench claws and two adjustment levers, wherein one end of the connection rod is symmetrically provided with two protruding blocks, and the two wrench claws and the two adjustment levers are between the two protruding blocks. V-shaped notches are formed in opposite sides of the two wrench claws. The inclined angle between two side edges of each V-shaped notche is 120 degrees. One side edges of the two V-shaped notches are parallel to a shaft section of the connection rod. The other side edges of the two V-shaped notches form a closed end. Rod holes are formed in the two protruding blocks. The diameters of the rod holes are matched with the outer diameters of the adjustment levers. One end of each adjustment lever penetrates through one rod hole of one protruding block and is fixedly connected with one wrench claw. The angle-bisecting of the inclined angle between the two side edges of the V-shaped notches is coincided with the shaft section of the connection rod. The adjustable wrench head of the torque wrench is provided with a drive mechanism used for driving the adjustment levers to do axial motion. The adjustable wrench head of the torque wrench is suitable for fastening pieces with different specifications, and is high in working efficiency.

The invention relates to a corn kernel stripping device, and discloses a breaking device for cobs. The breaking device comprises a rack, a base is arranged on the rack, and a vertical rod and a charging barrel are fixedly connected to the base; a press rod and a fixing plate are connected to the vertical rod from top to bottom, a through hole is formed in one end, away from the vertical rod, of the fixing plate, a cob breaking rod is connected in the through hole in a sliding mode, the charging barrel is located below the cob breaking rod, a connecting rod is hinged to one end, away from the vertical rod, of the press rod, the other end of the connecting rod is hinged to the free end of a crank, the fixed end of the crank is rotationally connected with the rack, a sliding block is connected to the press rod in a sliding mode and connected with one end of the cob breaking rod in a spherical hinge mode, the other end of the cob breaking rod is in threaded connection with a petal-shaped expanding body, and a gripping jaw is welded in the charging barrel and located under the petal-shaped expanding body. Compared with the prior art, the breaking device uses motion of the crank and the connecting rod for pushing the press rod to move, so that a cam is always in a rotating work state, work continuity is ensured, and the work efficiency is improved.

The invention discloses double-power-source automatic transfer switching equipment which comprises a fixing seat, an end cap and a handle. A main circuit breaker and a standby circuit breaker are arranged on two sides of the fixing seat respectively, a handle groove for allowing the handle to rotate is formed in the end cap, a stirring seat is arranged above the fixing seat, a clutch motor is arranged on the fixing seat, two transmission plates are hinged on a mounting frame, one ends of the transmission plates are hinged to the stirring seat, two cams in one-to-one correspondence to the transmission plates sleeve a rotating shaft of the clutch motor in a linkage manner, a driving groove matched with a driving end of the corresponding cam is formed in each transmission plate, one side of each driving groove outwards extends to form a concave-arc-shaped driving wall, the handle sleeves the end of the rotating shaft of the clutch motor, and after pressing the rotating shaft on the clutch motor, the handle can drive the rotating shaft to independently rotate movably. The double-power-source automatic transfer switching equipment has the advantages of being convenient and labor-saving in manual operation, stable and reliable in working and high in sensitivity.

The application of the invention relates to an apparatus for stripping corn kernels, and discloses a cob breaking mechanism for stripping corn kernels. The cob breaking mechanism for stripping the corn kernels comprises a rack, wherein a vertical rod and a charging bucket are fixedly connected with the rack; a compression rod and a fixed plate are respectively connected with the vertical rod from top to bottom; a hole is formed at one side of the fixed plate away from the vertical bar; a cob breaking rod is slidably connected in the hole; the charging bucket is located under the cob breaking rod; a spring is arranged between the compression rod and the rack; a cylinder is arranged on the compression rod laterally; an output end of the cylinder is contacted with the compression rod; a sliding block is slidably connected with the compression rod; the sliding block is hinged with a ball at the upper end of the cob breaking rod; a petal-shaped inflation body is connected with thread on the other end of the cob breaking rod; a claw is connected with the bottom of the charging bucket; and the claw is located under the petal shaped inflation body. Compared with in the prior art, by using the claw instead of human hands to fix corns, the cob breaking mechanism for stripping the corn kernels provided by the invention is safer, and prevents workers to be scratched by a tip of the petal shaped inflation body when handing the corns; the motion of the compression rod is driven by the cylinder, thereby reducing the workload of operators.

The invention discloses a rotary pay-off rack. The rotary pay-off rack comprises a base, a rotary rack body, a shaft and a handle. The rotary rack body is arranged on the base. Wire blocking rods are fixed to the top of the rotary rack body. A first hole is formed in the base. A second hole is formed in the rotary rack body. A first groove is formed in the upper end face of the base. A third groove is formed in the lower end face of the rotary rack body. A second bearing is arranged between the base and the rotary rack body. The outer ring of the second bearing is in close fit with the first groove. The inner ring of the second bearing is in close fit with the third groove. A second groove is formed in the upper end face of the rotary rack body. A first bearing is arranged in the second groove. The shaft stretches into the first hole after sequentially penetrating through the first bearing, the second hole and the second bearing from top to bottom. A bolt is arranged on the base, and the end of the bolt abuts against the shaft. A nut is arranged on the bolt. A plate is fixed to the right side of the top of the rotary rack body. The handle penetrates through the plate, and the end of the handle abuts against the shaft. The rotary pay-off rack is compact in structure and safe and reliable in use, and the problems that according to an existing pay-off rack, time consumption and labor consumption are large, wires are out of order, fast knots are caused, the production efficiency is low, and the noise is high are solved.

The invention discloses a plastic injection mold with a rotating ejection demolding function for oblique thread workpieces. The plastic injection mold comprises a movable mold plate and a base, wherein a cavity insert is arranged at the middle part (away from the base end) of the movable mold plate; the cavity insert is connected with a toothed cavity; a mold core is arranged in the middle of the toothed cavity and penetrates through the cavity insert; a push rod seat is arranged at the base end of the movable mold plate; two push rods are arranged on the push rod seat and are distributed at two sides of the mold core; the free end of each push rod is provided with a push claw which is provided with two rows of claws; the two rows of claws are different in height and are a row of high claws and a row of low claws, respectively; the free ends of the high claws are connected with the outer side of the toothed cavity; and the free ends of the low claws are connected with the side edge of a spiral groove of the toothed cavity. The plastic injection mold has the advantage that on the basis of the characteristic of an oblique thread structure, when the high and low claws eject workpieces out, the toothed cavity is driven to rotate, so that the workpieces can be successfully demolded; the rotation is flexible, the push operation is labor-saving and the demolding efficiency is high.

The invention discloses a hydrodynamic transmission set assembling overturning and rotating table which comprises a workbench, a workbench base and a rotating shaft. Four balancing legs are symmetrically and movably installed at the bottom of a bottom supporting plate. Four fixing pillars are fixedly installed at the top of the workbench. Each fixing pillar is provided with a mounting bolt through a thread. Four part placing grooves are further formed in the top of the workbench. Due to arrangement of the workbench and the workbench base, working convenience is brought about. The workbench is of a rotatable structure, and the workbench base is of a reversible structure. When the workbench is rotated, two rotating fixing threaded studs are loosened at first, then the workbench is pushed to rotate, and because of balls inside, rotation can be made in a more labor-saving mode. When the workbench base is overturned, overturning fixing threaded studs are loosened at first, then the workbench base is pulled to rotate around the rotating shaft, and thus using is made convenient.

The invention relates to the field of coating, and discloses a stirrer for waterproof coating. The stirrer includes a plurality of stirring bars disposed at the lower end of a stirring shaft. The upper end of the stirring shaft is sleeved with a through hole of an inner sleeve and only can rotate freely. The outer surface of the inner sleeve is provided with an outer thread, the inner sleeve is sleeved with a through hole of an outer sleeve, and the inner surface of the through hole of the outer sleeve is provided with an inner thread matched with the outer thread. The outer surface of the lower end of the outer sleeve is provided with cross bars perpendicular to the stirring shaft. The cross bars are sleeved with clamping mechanisms fixed to a coating barrel. The stirrer includes at leasttwo cross bars evenly distributed along the radial direction of the outer sleeve. A problem that construction workers stir the coating with wood sticks in stirring construction processes of waterproof coating at present so that the stirring efficiency is low and stirring is nonuniform is solved.

The invention provides a novel storage cabinet rotating device, which comprises a first cabinet body, a second cabinet body, a third cabinet body and turntables, wherein a groove is formed in the top of the first cabinet body, a groove is formed at the bottom of the third cabinet body, the bottom and the top of the second cabinet body are respectively provided with grooves, the turntables are respectively arranged in the grooves formed in the tops of the first cabinet body and the second cabinet body, the second cabinet body is overlapped on the first cabinet body through clamping the turntables into the grooves, the third cabinet body is overlapped on the second cabinet body through clamping the turntable into the groove, the two sides of each cabinet body are connected with cabinet doors through hinges, and drawers are arranged in inner cavities of the cabinet bodies. The turntables consist of outer turntables and inner turntables, and the outer turntables are connected with the inner turntables through rolling balls. The novel storage cabinet rotating device has the advantages that the cabinet bodies can realize the free rotation through the turntables, the structural design is ingenious, articles can be conveniently found, the turntables are formed by connecting the inner turntables and the outer turntables through the rolling balls, the structure connection is firm, the rotation is easy and labor-saving, the cabinet bodies are connected with the cabinet doors through the hinges, the cover turning is free, circular arc-shaped notches are formed in the top corners of the cabinet doors, and the cabinet doors can be conveniently opened.

The invention discloses a biogas tank residue discharging port anti-blocking mechanism. The biogas tank residue discharging port anti-blocking mechanism comprises a biogas tank body, the top of the biogas tank body is communicated with a feeding pipe, the right of the biogas tank body is communicated with a gas outlet pipe, and the four corners of the bottom of the biogas tank body are fixedly connected with support columns. According to the biogas tank residue discharging port anti-blocking mechanism, a rotating wheel drives a forward-reverse toothed screw to drive a thread sleeve to move tothe middle, then the thread sleeve drives a connecting block to the middle, the crankshaft pushes up a bearing plate, the bearing plate drives a transmission motor to move up, and the transmission motor drives a mixing rod to rotate and insert the top end of the mixing rod into a discharging pipe. By means of the biogas tank residue discharging port anti-blocking mechanism, the problem that an existing biogas tank is inconvenient during residue discharging and prone to blocking of a discharging port by settled biogas residues so that a user needs to dredge the discharging port with a tool to result in staining clothes and body and further increasing the incidence of diseases can be solved; besides, the biogas tank residue discharging port anti-blocking mechanism has the advantages of avoiding blocking the discharging port and the like.

The invention discloses a cosmetic raw material emulsifying device, which comprises a placing table, a supporting column, a transverse supporting column and a stirring apparatus, a transmission apparatus and an extending apparatus are arranged on the stirring apparatus, and the transmission apparatus comprises a rotating disc, a handle, a fixing groove, a transmission rod and a bearing; the extending apparatus comprises a first stirring rod, a first fixing block, a first U-shaped groove, a sliding plate, a second fixing block and a slender rod, by arranging the transmission apparatus, downwardforce applied by the rotating disc can be stably transmitted, and when the transmission rod rotates, friction to the inner wall of the fixing groove is reduced through the bearing, so that more laboris saved during rotation of the rotating disc; meanwhile, under the action of the transmission rod, the power of the rotating disc can be well transmitted to a lower part; by arranging the extendingapparatus, the distance between the first stirring rod and a second stirring rod can be adjusted, the distance is not limited by the size of an emulsifying barrel any more, the stirring apparatus doesnot need to be replaced according to the size of the emulsifying barrel any more, and meanwhile cosmetics can be emulsified more sufficiently in the emulsifying barrel.

The invention relates to the technical field of textiles, and discloses a textile dyeing device convenient to use. The textile dyeing device comprises a box body. A top plate is fixedly installed at the top of the box body, and a servo motor is fixedly installed on the upper surface of the top plate. A rotating rod penetrating and extending to an inner cavity of the box body is fixedly mounted onan output shaft of the servo motor, and the outer surface of the rotating rod is sleeved with a first bearing connected with the box body. According to the textile dyeing device convenient to use, through a first pulley mounted at the bottom of a base plate, the device saves more labor during rotation, plenty of electric energy is saved, and the effects of energy conservation and emission reduction are achieved; by combination with a blocking disc and an enlarging column which are mounted above and below the base plate respectively, a very limiting effect on the base plate is achieved well, and the device is more stable and safer in use; by combination with a first stirring plate and a second stirring plate, a dyed cloth in the box body can be fully stirred, the dyeing is more uniform andquicker, and the use is very convenient.

The invention relates to a light controller socket which comprises a socket base; a jack is molded at one side of the socket base, and a mounting part is molded at the other side of the socket base; the mounting part is a convex circular ring; the circular ring is internally provided with an insulating plug mounting seat; a metal plug seat is arranged in the plug mounting seat; one end of the metal plug seat is connected with a core of a cable, and the other end of the metal plug seat is communicated with the jack; a ring-shaped blocking groove is arranged on the mounting part; the mounting part is provided with an elastic retainer ring; the elastic retainer ring is provided with a plurality of blocking pieces which are blocked in the ring-shaped blocking groove; and the elastic retainer ring is provided with a plurality of barb structures which are arranged along the same direction at the side close to the socket base, so that the socket base can properly rotate according to the need. The light controller socket solves the problem that in the prior art, after being plugged, the light controller socket can not be adjusted by rotation; the invention provides the light controller socket which can be rotated so as to adjust the direction of a light controller; and the light controller socket can be installed without using a tool, thus being more convenient and fast in installation as well as safe and stable to use.

The invention discloses a rotary knob assembly and a washing machine using the same. The rotary knob assembly comprises a rotary knob body, a transmission piece and a shaftless encoder which are coaxially arranged, and further comprises a rotary knob cover and a rotary knob ring used for hooping the rotary knob cover on the top face of the rotary knob body. The rotary knob ring, the rotary knob body, the transmission piece and the shaftless encoder are sleeved layer by layer in sequence, so that connecting structures in the circumferential direction of the rotary knob assembly are cooperatively hidden. According to the rotary knob assembly, on the basis of using the shaftless encoder, the ring structure used for fixing the rotary knob cover and the rotary knob body is added, on one hand, the effect of sealing the rotary knob cover and the rotary knob body is improved, and on the other hand, the moment of the rotary knob is improved. The problems that in an existing rotary knob assembly, the rotating noise is large, the resistance is high, and the handfeeling of a user is poor are solved, and the rotary knob assembly is suitable for application and popularization.

The invention discloses a cover structure of an electric pressure cooker, which comprises a surface cover and an inner cover below the surface cover; the inner cover is provided with fastening teeth which are mutually rotationally matched with an outer cooker body of the electric pressure cooker; and the surface cover and a cooker body are connected in an overturning way by a hinge. The cover structure is characterized in that: the central position of the surface cover is provided with a central hole of the surface cover and a rotating central shaft; the rotating central shaft is axially positioned and can be radially rotationally arranged in the central hole of the surface cover; and the inner cover is fixedly connected with the rotating central shaft. In the cover structure, the rotating central shaft is rotated to drive the inner cover fixedly connected with the rotating central shaft to rotate, so that the aim of opening or fastening a cover is achieved, and the cover structure is simpler and has lower cost. The technical proposal can be suitable for cover structures of various pressure cookers.

The invention provides a lining sleeve milling groove machining tooling. The lining sleeve milling groove machining tooling comprises a pressing plate, a compressing bolt, a clamping block and a supporting column, wherein the clamping block is a cuboid metal block with one side of the upper portion being provided with a V groove, the bottom of the V groove is provided with a first sliding rail with the cross section being in an L shape, the first sliding rail communicates with the bottom of the V groove and the side wall of the clamping block, the side wall of the V groove is further providedwith a second sliding rail communicating with the side wall of the clamping block, the first sliding rail and the second sliding rail are internally provided with slideable positioning structures, theupper portion of the clamping block is provided with the pressing plate, the pressing plate is connected with the clamping block through the supporting column, the lower end of the supporting columnis connected with the upper portion of the clamping block, the upper end of the supporting column is connected with the pressing plate in a rotatable manner, the part, between the V groove and the supporting column, of the clamping block is provided with a thread blind hole, the position, directly opposite to the thread blind hole in the vertical direction, in the pressing plate is provided with athrough hole, and the through hole is internally provided with the compressing bolt in a penetrating manner. By means of the lining sleeve milling groove machining tooling, a lining sleeve can be rapidly and accurately positioned, and especially when multiple grooves are machined around the circumference of the lining sleeve, compared with existing mark measurement method clamping and experiencemethod clamping, the efficiency and accuracy are improved a lot.

The invention relates to a corn kernel stripping device and discloses a cob breaker. The cob breaker comprises a machine frame, and a base is arranged on the machine frame; a vertical rod and a charging barrel are fixedly connected to the base, a press rod and a fixing plate are connected to the vertical rod from top to bottom, a through hole is formed in one end, away from the vertical rod, of the fixing plate, a cob breaking rod is connected into the through hole in a sliding mode, and the charging barrel is located below the cob breaking rod; a rack is arranged above the press rod, abuts against the press rod and is meshed with a gear, a spring is arranged between the free end of the press rod and the machine frame, a sliding block is connected to the press rod in a sliding mode and connected with one end of the cob breaking rod in a spherical hinge mode, the other end of the cob breaking rod is in threaded connection with a petal-shaped expanding body, and a gripping jaw is welded in the charging barrel and located under the petal-shaped expanding body. Compared with the prior art, the cob breaker uses motion of driving the rack through the gear and elastic force of the spring for pushing the press rod to do circular reciprocating motion, so that the press rod is always in a work state, work continuity is ensured, and the work efficiency is improved.

The invention relates to a lifting supporting frame with a pressure measurement function for a vehicle. The lifting supporting frame is mainly composed of a base, a threaded supporting rod, a rotating body, a rotary handle, a supporting frame body, a rotatable connection supporting body and an arc-shaped supporting body. The lifting supporting frame has the characteristics that the vehicle lifting supporting frame can be adjusted according to the altitude required by a supported object, the design is reasonable, using is convenient, and the effect is good.

The invention discloses a chassis supporting structure of hoisting machinery, comprising a chassis and a cargo boom. First hydraulic rods are fixedly mounted at the two ends of the chassis; second hydraulic rods are fixedly mounted at the bottoms of one ends of the first hydraulic rods; a landing support base is fixedly mounted at the top of the left end of the chassis; a chute is formed in one end of the landing support base; the landing support base is slidably connected with a landing support plate; and a buffer spring is fixedly mounted at the bottom of the landing support plate. In the invention, the first hoisting hydraulic rods and the second hoisting hydraulic rods drive the cargo boom to move at the same time, so that the cargo boom rotates more quickly in a more labor saving mode; meanwhile, the first hoisting hydraulic rods and the second hoisting hydraulic rods are "spare tires" for each other; and when one hoisting hydraulic rod breaks down, the other hoisting hydraulic rod can drive the cargo boom, the use of the crane cannot be affected, and the left end of the cargo boom cannot be suddenly lowered to avoid dangers.

The invention relates to the technical field of aero-engine thrust augmentation fuel distributor assembling, in particular to a device for assembling a thin film check ring of an aero-engine thrust augmentation fuel distributor. According to the device, a traditional mandrel is replaced with the screw-in pressing of threads, and a fixing base and the shell thread match and are fastened, so that the stability and smoothness of the whole assembly process are realized, the application of a threaded pressing rod is realized, the traditional manual pressing is converted into light torque, and the difficulty of manual direct pressing is solved. Through the application of the device, the one-time assembly success rate of each group of stop rings in the prior art is improved to 100% from less than 30%, the damage of the split shell, a sealing ring and a stop rings is avoided, the rejection rate is reduced to 0, and the production operation efficiency is greatly improved.

The invention belongs to the technical field of soil loosening devices, and particularly relates to an agricultural production sweet potato planting soil loosening device to solve the problems of inconvenience in soil turning angle adjustment and poor self-locking effects of an existing soil turning plate. The device comprises a mounting plate with a flat square tube structure, a cavity is formedin the mounting plate, screw holes are formed in the middles of the upper surface and the lower surface of the mounting plate, the same external thread tube is connected between the two screw holes ina threaded manner, four sliding grooves are formed in the inner wall of the circumference of the external thread tube and close to the bottom end of the external thread tube, fixing strips are clamped into the four sliding grooves, the same internal thread tube is fixed among the four fixing strips, studs are connected onto the inner wall of the circumference of the internal thread tube in a threaded manner and close to the bottom end of the internal thread tube, a soil turning plate is welded at the bottom ends of the studs, and limit holes are formed in the top ends of the studs and close to the middles of the studs. The soil turning angle of the soil turning plate can be finely adjusted and can also be greatly adjusted conveniently, and self-locking effects are good.

The invention discloses a device and a method for preparing sterile water for injection. The device comprises an upper tank body, a first filter device, a lower tank body, a secondary steam tank, a second filter device and a finished product collecting device, wherein raw water enters the upper tank body, then partial impurities are filtered by virtue of the first filter device, steam is formed in the lower tank body, the steam is condensed, then secondary evaporation is carried out by virtue of a secondary evaporation tank, recondensation is carried out, then refined filtration is carried out twice, finally water quality is detected in the finished product collecting device, and after the water quality meets various indexes, a detection tank is communicated with a finished product tank, water is put into the finished product tank, and the water in the finished product tank is subjected to encapsulation and then is subjected to sterilization treatment, so that the sterile water for injection is obtained, and when the water quality is unqualified, the water flows into the upper tank body again, and processing is carried out again until the water quality is qualified. The device and the method which are disclosed by the invention have the advantages that water quality requirement is low, the device is simple in structure and easy to maintain, and the water quality is detected in real time, so that quality and service safety of the sterile water for injection are improved; meanwhile, a preparation process is simple and easy to master, and preparation cost is effectively reduced.

The invention discloses a loosening-prevention flange face bolt, and relates to the technical field of bolts. The loosening-prevention flange face bolt comprises a bolt tail, a first thread is mountedon the outer side of the bolt tail, a first bolt head is fixedly connected to the front end of the first thread, a handle hole is formed in the outer side of the first bolt head, a second thread is mounted on the inner wall of the handle hole, a handle rod is mounted on the right of the handle hole, the left end of the handle rod is inserted into the handle hole, the handle rod is matched with the handle hole, the outer side of the right end of the handle rod is provided with a third thread, the third thread is matched with the second thread, the handle rod and the handle hole are fixedly connected together through the second thread and the third thread, the left end of the handle rod is fixedly connected with a clamping plate, the clamping plate is in the handle hole, the right end of the handle is fixedly connected with a handle, according to the loosening-prevention flange face bolt, a force arm during whole rotation of the bolt can be increased, the rotation of the whole bolt is more easy, and the whole bolt can be screwed into the target position in a labor saving manner.

The invention discloses an assembly type indoor water and electricity installation scaffold, and belongs to the technical field of water and electricity installation. The assembly type indoor water and electricity installation scaffold comprises a side installation frame, a first installation frame, a second installation frame, a connecting assembly, an oil box and a driving gear, wherein a scaffold platform is fixedly arranged at the tops of the first installation frame and the second installation frame. According to the assembly type indoor water and electricity installation scaffold, the double telescopic installation frames are arranged, second installation shafts with the driving gears are arranged on bottom feet, when the height of the scaffold needs to be adjusted, a rotating disc can be directly rotated to drive the second installation shafts to rotate, so that the driving gear is driven to rotate; the mutual meshing connection effect of the driving gear, a transmission gear and a driven gear is designed, a threaded column can be driven to rotate, so that the whole scaffold can be driven to ascend and descend, and the height of the scaffold is convenient to adjust; and thetooth diameter of the driving gear is designed to be far larger than the tooth diameter of the transmission gear and the tooth diameter of the driven gear, so that during lifting, the labor is saved during rotation, the design is ingenious, and the use effect is good.

The invention belongs to the field of centrifugal pumps and particularly relates to a series-parallel connection centrifugal pump which has the flow channel series-parallel connection switching capacity. The series-parallel connection centrifugal pump comprises a pump body and a pump shaft. The pump shaft is provided with two impeller parts, and a first cavity channel and a second cavity channel are formed in a pump cavity corresponding to the two impeller parts. A first bypass flow channel, a second bypass flow channel, a first liquid outlet flow channel and a second liquid outlet flow channel are formed in the pump body, wherein the first bypass flow channel and the second bypass flow channel are used for communicating an outlet of an external liquid inlet pipeline and an inlet of the first cavity channel as well as the outlet of the external liquid inlet pipeline and an inlet of the second cavity channel respectively, and the first liquid outlet flow channel and the second liquid outlet flow channel are used for communicating an inlet of the external liquid outlet pipeline and an outlet of the first cavity channel as well as the inlet of the external liquid outlet pipeline and an outlet of the second cavity channel. A branch flow channel is further arranged in the pump cavity, one end of the branch flow channel is communicated with a liquid inlet of the second cavity channel, and the other end of the branch flow channel is communicated with the first liquid outlet flow channel to form a three-way joint. The series-parallel connection centrifugal pump further comprises a switching part, a switching assembly is arranged at the second liquid outlet flow channel, and the switching assembly and the switching part are in electric linkage or mechanical linkage. Due to the linkage structure, the series-parallel connection centrifugal pump is reasonable and practical in structure, long in service life and reliable and stable in work.

The invention discloses an opening and closing device of a feed inlet of a garbage container in the technical field of environmental sanitation. The opening and closing device comprises a feed inlet frame and also comprises an opening and closing door for opening and closing the feed inlet. The opening and closing device also comprises a rotary driving mechanism capable of controlling rotary opening and closing motions of the opening and closing door; the opening and closing door is arranged of a foldable door-shaped structure and the rotary driving mechanism is in transmission connection to a main door plate. The opening and closing device also comprises a linking mechanism, two ends of which are separately connected to the main door plate and an auxiliary door plate; the opening and closing device also comprises a movable ejector rod which is rotatably mounted on the feed inlet frame, the free end of which leans against the linking mechanism to drive the whole opening and closing door to expand; a guide pin is fixed on the side edge of the main door plate, a guide slide hole is formed in the movable ejector rod, and the guide pin is movably threaded in the guide slide hole. The rotary opening and closing motions of the opening and closing door are assisted by means of parts such as the movable ejector rod and the linking mechanism, so that the feed inlet of the opening and closing door is conveniently opened and closed.