50results about How to "Solve the trouble of replacement" patented technology

The invention discloses a self-adapted solar energy charging controller, which is a controller using solar energy to discharge a storage battery. The controller comprises a storage battery voltage sampling circuit, temperature detecting circuit, a solar energy battery board sampling circuit, a control circuit that solar energy board charges the storage battery, a load controlling and protecting circuit. The charging is controlled by field effect tube IRL3803S, which has faster speed than the regular controllable electric switch and has a small conducting resistance. The single chip uses PWM storage battery charging mode, ensuring the reasonable state of the storage battery, enhancing using age of the storage battery; the digital signal outputted by the single chip is series-wounded to through and break of the field effect tube IRL3803S of outputting loop. When the storage battery is reversely connected, the safe will not be burned and any components of the controller will nit be damaged; the load current has protecting function for overload and short current. The controller has high efficiency, simple circuit, which can avoid high temperature fo the solar energy battery board array.

The invention provides a wastewater treatment method. Specifically, the method includes: under the effect of a magnetic field, suspending magnetic catalyst particles in wastewater, and conducting a mixing treatment on the wastewater, the magnetic catalyst and an oxidant so as to make the B / C of the treated wastewater larger than equal to 0.3. The wastewater treatment method provided by the invention make the magnetic catalyst particles suspended in the wastewater in the presence of an external magnetic field, and performs catalytic oxidation treatment on the wastewater. With the method, the wastewater treatment effect can be improved significantly, the wastewater treatment effect is stable, and the biodegradability of wastewater can be effectively enhanced.

The invention discloses an automobile modular framework assembly. The assembly comprises a first beam, a second beam, a third beam, a fourth beam, a first L-shaped connecting piece, a second L-shaped connecting piece, a first depression bar, a second depression bar, a core bar, a first bolt, a second bolt and a nut; the left and right side faces of the first beam, the second beam and the third beam are all provided with first T-shaped grooves extending in the lengthwise direction, the upper and lower side faces of the first beam are each provided with two second T-shaped grooves extending in the lengthwise direction, the upper and lower side faces of the second beam are each provided with a second T-shaped groove extending in the lengthwise direction, and the upper and lower side faces of the third beam are planes; the two sides of the fourth beam are each provided with a first T-shaped groove extending in the lengthwise direction, and the part between the two side faces of the fourth beam is in an arc shape. When the automobile modular framework assembly is applied to automobile framework assembling, the varieties of needed components are few, the assembling speed is high, the production efficiency is high, all the components can be produced in a standardized mode, the cost is low, the strength is high, maintenance is convenient, and the automobile modular framework assembly has a very wide market prospect.

The invention discloses a composite corrugated steel web box girder and a construction technology of the composite corrugated steel web box girder. The composite corrugated steel web box girder comprises a bottom flange plate, a top flange plate and two corrugated steel webs which are symmetrically supported between the bottom flange plate and the top flange plate. A prestress system is arranged in the bottom flange plate and comprises a middle prestress structure and two side prestress structures. The construction technology of the composite corrugated steel web box girder comprises the steps of (1) arranging and installing the prestress system and the corrugated steel webs; (2) constructing the bottom flange plate, wherein the construction of the bottom flange plate comprises the steps that firstly, pouring of concrete in the middle of a part of sections of the bottom flange plate and primary prestress tension are conducted, and secondly, pouring of concrete in the middle of the remaining sections of the bottom flange plate and secondary prestress tension are conducted; (3) constructing the top flange plate before construction of the bottom flange plate or in the process of construction of the bottom flange plate or after construction of the bottom flange plate. According to the composite corrugated steel web box girder and the construction technology of the composite corrugated steel web box girder, the design is reasonable, construction is convenient, the constructed and formed composite corrugated steel web box girder is reasonably stressed and good in use effect, and multiple kinds of problems of an existing concrete box girder can be solved.

The invention discloses an assembled paying-off pulley. The assembled paying-off pulley comprises a pulley body and a rubber liner arranged on the pulley body, wherein the pulley body mainly comprises at least two sliding pulley blocks; adjacent sliding blocks are connected with each other through threads; the rubber liner is in interference fit with a pulley groove of the pulley body; and moreover, the contact surface between the pulley groove and the rubber liner is a combination surface with roughness. According to the assembled paying-off pulley, the rubber liner is in interference fit with the pulley body, and the rubber liner is sleeved on the pulley body instead of being formed by hot-pressing and bonding, so that the rubber liner is convenient to replace after being damaged, and can be replaced manually without using related equipment; and troubles of replacing by entrusting a specialized manufacturer are avoided, and furthermore, the replacement of the pulley can be finished at a construction site.

The invention discloses a short stress line rolling mill and a method for eliminating thread gaps thereof, belonging to the technical field of steel rolling systems in the metallurgical industry. The short stress line rolling mill of the present invention comprises a frame, a pull rod assembly, a roll train assembly, a guide beam assembly, and a roll gap adjustment device. A balance device for eliminating thread gaps is installed in the pull rod assembly, and the balance device includes a cage, a nut, A disc spring, a support member and a retaining sleeve. The two ends of the support member are respectively equipped with retaining sleeves and nuts. The disc spring is set on the surface of the supporting member and is limited by the retaining sleeve and the nut to form a balance assembly. The above-mentioned balance assembly is installed in the cage, and is installed in the tie rod assembly through the cage. The present invention installs a gap elimination balance device in the assembly of the pull rods of the rolling mill, and optimizes the structure of the balance device so that it can be installed in the form of components, thereby effectively improving the effect of eliminating thread gaps in the rolling mill, thereby ensuring that the rolling mill rolling precision.

The invention discloses a corrugated steel web combination ribbed beam and a construction process of the corrugated steel web combination ribbed beam. The corrugated steel web combination ribbed beam comprises bottom flange plates, top flange plates and corrugated steel webs, wherein the corrugated steel webs are arranged between the bottom flange plates and the top flange plates in a supporting mode. A prestress system is laid in each bottom flange plate and comprises a middle prestress structure and two side prestress structures. The construction process of the corrugated steel web combination ribbed beam comprises the following steps: firstly, the prestress systems and the corrugated steel webs are laid and installed; secondly, the bottom flange plates are constructed, wherein according to the step 201, concrete is poured into the middle of a segment of each bottom flange plate, and primary prestress tensioning is conducted; according to the step 202, the concrete is poured into the rest of each bottom flange plate, and secondary prestress tensioning is conducted; the top flange plates are constructed before the bottom flange plates are constructed or when the bottom flange plates are constructed or after construction of the bottom flange plates is completed. According to the corrugated steel web combination ribbed beam and the construction process of the corrugated steel web combination ribbed beam, the design is reasonable, construction is convenient, and the corrugated steel web combination ribbed beam which is constructed and formed is reasonable in stress, good in usage effect and capable of solving various problems of an existing concrete ribbed beam.

The invention discloses an extrusion connecting device for a non-flaring guide tube connector. The extrusion connecting device comprises a hydraulic system, a clamping mechanism, a stretching mechanism, an anvil mould, semi-female moulds and a pull rod assembly, wherein an adapter head driven by the stretching mechanism is connected to the pull rod assembly; the anvil mould is detachably fixed onto a base foundation through an anvil mould base; the anvil mould is provided with cylindrical mould cavity structures which are sequentially arranged and are provided with four-grade diameters; the semi-female moulds are symmetrical structures which are formed by combining two semicircular rings, and are detachably mounted and fixed in clamping arm half holes of a clamping mechanism for clamping and fixing the guide tube connector during closing; and a mould closing gap is formed in a combined part while the two half circular rings are combined to clamp and fix the guide tube connector. The extrusion connecting device can effectively reduce labor intensity of an operator, can achieve self-adaptive clamping for dimension difference of different workpieces of the same theoretical specification, and can overcome the gap glue overflow problem of the pull rod and the inner diameter of the guide rod, so that quality of produced products is improved, the problem that mould is troublesome to replace is solved, and processing efficiency is improved.

The invention discloses an oral cavity opener. The oral cavity opener comprises a bent plate, a supporting mechanism is installed on the right side of the bottom of the bent plate, a groove is machined in the left side of the front face of the supporting mechanism, an adjusting mechanism is installed in the groove, a telescopic mechanism is installed on the left side of the top of the supporting mechanism, a through opening is machined in the right side of the front face of the bent plate, and a vertical plate is fixedly connected to the left side of the top of the bent plate. According to theoral cavity opener, the problem that an existing oral cavity opener cannot support a cavity in the oral cavity in use is solved through an air robbing mechanism; the bottom of the oral cavity openeris prevented from abrading the oral cavity; the oral cavity is prevented from being broken during long-time use, troubles are prevented from being caused to a user, the use experience of the user is guaranteed, the problem that the oral cavity cannot be adjusted according to the size of the oral cavity is solved through a telescopic mechanism and a rotating mechanism, the replacement trouble is omitted, time is saved, the working difficulty is reduced, the practicability is improved, functions are comprehensive, and popularization is facilitated.

The invention discloses an electroplating device stably clamping PCBs. The electroplating device comprises a groove body and a PCB clamping device. A liquid spraying pipe is arranged at the bottom of the groove body, a liquid sucking pipe is arranged at the upper portion of the groove body, and a water pump is arranged between the liquid sucking pipe and the liquid spraying pipe. An inlet of the water pump is connected with the liquid sucking pipe, and an outlet of the water pump is connected with the liquid spraying pipe. Round holes are formed in the surface of the liquid sucking pipe and the surface of the liquid spraying pipe correspondingly. A stirring paddle is arranged at the lower portion of the groove body. The top of the groove body is connected with a support. Clamping plates are fixed to the support, every two adjacent clamping plates are arranged into a group, the two clamping plates in each group are parallel in the horizontal direction, and the two ends of the clamping plates are connected through springs. According to the groove body, due to the arrangement of the liquid sucking pipe and the liquid spraying pipe, the mixing efficiency of electroplating liquid is improved; the clamping plates of the PCB clamping device are connected through the springs, the PCBs can be conveniently clamped, the electroplating device can also be used for clamping the PCBs with different sizes, time and labor are saved, meanwhile, cost is also reduced, the clamping plates and electrodes are connected, electroplating is more uniform, and the electroplating quality is improved.

The invention relates to filter paper for a water purifier. The filter paper is prepared from, by weight, 46-50% of activated carbon, 42-43% of hardwood pulp, 9-9.8% of polyester fibers, 1-1.8% of glass fibers, 0.04-0.12% of cationic polyacrylamide, 0.1-0.3% of alkyl ketene dimer, 0.5-0.9% of polyamide epichlorohydrin and 8-10% of acrylate resin. The filter paper is a filter material with a porous network structure, which is prepared by taking plant fibers and glass fibers as carriers and adding activated carbon powder, chemical fibers and functional aids into paper pulp, and has good interception, adsorption and filtration effects on residual chlorine and organic impurities in water. On the basis that the filtering performance of the filter paper is guaranteed, the water filtering speed of paper sheets is increased, and the filter paper has high economic popularization value.

The invention relates to the technical field of a motor device, in particular to a novel motor lining press device. The novel motor lining press device comprises a bottom plate, guide rails, a movable base, a lining press table, a fixing vertical post, a first air cylinder and a second air cylinder, wherein the guide rails and the second air cylinder are fixed on the bottom plate. In the novel motor lining press device disclosed by the invention, a lining can be pressed into a motor shell by the device, a motor stator is then arranged in the lining, the lining can be taken out and stators in different types can be replaced if the motor stator is required to be replaced, and the problems of a replacement trouble and short service lifetime of a traditional motor stator are solved; and moreover, the device is simple to operate, convenient to use and move, and suitable for the promotion and the application.

The invention provides an indoor multifunctional shoe-changing bench. The indoor multifunctional shoe-changing bench comprises clamping plates, a seat plate, shoe polishing rollers, sliding shoe placing plates and a switch, wherein seat plate clamping grooves are formed in two sides of the upper part of an empty groove, and shoe placing plate clamping grooves are further formed in the middle of the empty groove and two sides of the lower end of the empty groove; the seta plate penetrates through the seat plate clamping grooves and penetrates into the interior of a shoe cabinet so as to be fixedly provided with two groups of limiting blocks; three groups of idler wheels are fixedly mounted at the bottom of a support plate; the shoe polishing rollers are rotatably mounted inside a groove inthe bottom of a placing cavity cover; the other side of the support plate is further riveted with two groups of sliding shoe placing plates, two ends of the sliding shoe placing plates penetrate intoclamping grooves in the clamping plates through the shoe placing plate clamping grooves, and the tops of the sliding shoe placing plates are further connected with a partition; and the inner side of the shoe cabinet on the upper side of the seat plate is fixedly connected with a fixed shoe placing plate. Shoes placed on the sliding shoe placing plates are changed, the seat plate and the sliding shoe placing plates are pushed to the interior of the shoe cabinet after shoe changing is finished, through the arrangement of the shoe polishing rollers, the shoe polishing rollers are driven to rotatethrough a motor, and the shoes are polished.

The invention discloses a full-automatic hanging scaffold mechanism. The full-automatic hanging scaffold mechanism comprises a base, a wire end processing device and a hoisting device, wherein the hoisting device comprises a hanging scaffold shaft, a control shaft and a hinge block component; the hinge block component is rotationally connected to the hanging scaffold shaft through a locating pin;one end of the hinge block component is movably hinged to the control shaft; the control shaft is connected to a control shaft driving part in order to drive the hinge block component to be unfolded or retracted; the upper part of the hanging scaffold shaft is sleeved with a fixing sleeve; the wire end processing device comprises a base plate, a wire disengaging tip, a wire stopping block, a wirehooking part and a wire pressing part; the wire disengaging tip is connected to the base plate in a lifting mode; the wire stopping block is located between the wire disengaging tip and the wire hooking part; the wire stopping block can move left and right relative to the wire disengaging tip; the wire pressing part can stretch out or retract relative to the wire hooking part; and the base plate is connected to the fixing sleeve through the base. According to the full-automatic hanging scaffold mechanism, a wire end is guaranteed to be automatically disengaged, the surface of a wound wire cannot be scratched, the hinge block component is unfolded or retracted in place, a drum is stably hoisted, and automatic transferring of the drum is achieved.

The invention discloses a capacitor emergency lamp and a power supply method therefor. The capacitor emergency lamp comprises a lamp body, a power supply unit and a processing control unit; the powersupply unit comprises a mains supply module and a capacitor module; the lamp body is electrically connected to the mains supply module and the capacitor module; the mains supply module and the capacitor module are controllably connected to the processing control unit, wherein the processing control unit further comprises a detection module and a control module; the detection module is in communication interconnection with the power supply unit, and the detection module is used for detecting the circuit state of the power supply unit; and the control module selects one of the mains supply module and the capacitor module to supply electric energy for the lamp body according the detection result of the detection module.

The invention discloses a storage battery integral casting and welding clamp, and relates to the technical field of cast welding clamps. The storage battery integral casting and welding clamp comprises a bottom plate, wherein a movable frame which is formed by a plurality of clamping plates and clamping mechanisms used for clamping the movable frame are installed on the bottom plate, the movable frame is composed of a plurality of movable clamping plates and a fixing clamping plate, and the movable clamping plates and the fixing clamping plate are arranged in a staggered mode to form a plurality of well line cavities capable of containing battery cells; an automatic reset mechanism acting on the clamping plates is arranged in the movable frame; the two sides of the movable frame are respectively provided with the clamping mechanisms; the clamping mechanisms comprise a plurality of fixing columns and a plurality of cushion blocks, wherein the fixing columns and the cushion blocks are arranged on one side of the bottom plate side by side, and rotating shafts are rotationally connected to the fixing columns and the cushion blocks; and clamping blocks are arranged on the cushion blocks, and positioning columns are fixed on the fixing columns. Holes and pin columns which are matched with the fixing columns are formed in the positioning columns; and the positioning columns and the fixing columns are assembled and combined through the holes and the pin columns, so that the problems of long-term brush abrasion and troublesome replacement of the positioning columns are solved.

The invention discloses a PCB electroplating device. The PCB electroplating device comprises a trough body and a PCB clamping device. Liquid spraying pipes are arranged around the bottom of the trough body. Liquid sucking pipes close to the side wall are arranged on the upper portion of the trough body. Water pumps are arranged between the liquid sucking pipes and the liquid spraying pipes. Inlets of the water pumps are connected with the liquid sucking pipes. Outlets of the water pumps are connected with the liquid spraying pipes. The surfaces of the liquid sucking pipes and the surfaces of the liquid spraying pipes are all provided with round holes. The top of the trough body is connected with a support. A brace rod of the support is provided with two tripods. The top ends of the tripods are fixedly connected with the brace rod. Two or more clamping plates parallel in the vertical direction are fixed under each tripod at an equally-spaced mode. Every two adjacent clamping plates are a set. The two ends of the two clamping plates in the same horizontal plane in each set are connected correspondingly through springs. According to the trough body of the PCB electroplating device, the efficiency of mixing of an electrolyte is improved through the arrangement of the liquid sucking pipes and the liquid spraying pipes. The clamping plates of the PCB clamping device are connected through the springs so that pcbs can be clamped conveniently, the clamping plates can also be used for clamping different-dimension pcbs, and thus the cost is also lowered while time and labor are saved.

The invention discloses an adjustable earth digging pick, which comprises a handle and a mounting connecting part, wherein the handle is of a telescopic structure; a sheath is arranged on the handle in a sleeving manner; rubber bodies are arranged on the surface of the sheath, and are integrated with the sheath; a reinforcing rib is connected between the handle and the mounting connecting part; the bottom of the handle extends into the mounting connecting part; a buffer head is arranged at the position, corresponding to the handle, of the mounting connecting part, and is arranged between the handle and the mounting connecting part; connectors are arranged at the two ends of the mounting connecting part, and are both detachably connected with the mounting connecting part; one connector is externally connected with a pick. The adjustable earth digging pick is easy to assemble and high in practicability; a rake and a pick are combined, so that functionality and usability are enhanced, troubles in replacement are avoided, working efficiency is improved, and the adjustable earth digging pick is longer in service life; the adjustable earth digging pick also has a function of relieving fatigue of a hand, so that discomfort after long-term use is eliminated; in addition, the adjustable earth digging pick further has a certain buffering effect.

The invention relates to the technical field of composite extrusion, in particular to a plastics extruder capable of adjusting a shoe sole. The plastics extruder comprises a shoe sole extruder main body and an adjustable display screen, wherein one side of the shoe sole extruder main body is provided with a discharging pipe, a Number-one shoe sole molding die is arranged inside the shoe sole extruder main body, the outer surface of the Number-one shoe sole molding die is provided with a shoe sole adjusting apparatus, one side of the Number-one shoe sole molding die is provided with a Number-two shoe sole molding die, and the inner surface of the discharging pipe is provided with a cooling apparatus. The plastics extruder capable of adjusting the shoe sole is provided with the Number-two shoe sole molding die, the cooling apparatus, a dust collector and the shoe sole adjusting apparatus, so that the production efficiency can be increased, the enterprise expenditure can be saved, the cooling can also be performed, the overheat of the shoe sole can be avoided, the deformation of the shoe sole caused by the touch of the working personnel is avoided, smoke and dust inside the extruder can be absorbed, the attractiveness of the shoe sole can be improved, the adjustment can be performed according to the size of the shoe sole, the use is convenient, the plastics extruder is suitable for different working conditions, and the application prospect is better.

The invention discloses a reel hoisting mechanism with a wire head treatment function. The reel hoisting mechanism comprises a base, a wire head treatment device arranged at one end of the base, and areel hoisting and grabbing device arranged at the other end of the base. The reel hoisting and grabbing device comprises a fixed sleeve and a reel hoisting shaft. The top of the fixed sleeve is connected to the base. The upper portion of the reel hoisting shaft is connected with the lower portion of the fixed sleeve. The outer wall of the reel hoisting shaft is provided with a hinge block assembly capable of stretching out or drawing back. The wire head treatment device comprises a wire release center, a wire hooking assembly and a wire pressing assembly. The wire release center is liftably and movably connected to the base. The wire hooking assembly is arranged on the outer side of the wire release center. The wire pressing assembly can stretch out or draw back and is loc below the wirehooking assembly. The reel hoisting mechanism is compact in structure, realizes automatic release of a wire head, can fix the wire head and the wire tail after wire release cannot scratch the surfaceof a wound wire, hooks a reel from a center hole of the reel through the retractable hinge block assembly, is stable in reel hoisting and achieves the automatic transfer effect of the reel.

The invention discloses a full-automatic hanging scaffold grabbing mechanism. The full-automatic hanging scaffold grabbing mechanism comprises a base, a thread end processing device arranged at one end of the base and a hoisting device arranged at the other end of the base, the base is provided with a mechanical arm positioning ring, a grabbing device is arranged on one side of the mechanical armpositioning ring, and the grabbing device comprises a clamping jaw plate capable of grabbing a scaffold. The full-automatic hanging scaffold grabbing mechanism integrates empty scaffold righting, thread end and thread tail processing and scaffold transferring, when the full-automatic hanging scaffold grabbing mechanism is used, the mechanical arm positioning ring is used for being connected with amechanical arm, the inclined or toppled scaffold is grabbed through the clamping jaw plate, and after the scaffold is grabbed, the mechanical arm drives the full-automatic hanging scaffold grabbing mechanism to integrally turn over by 90 degrees, so that the scaffold is vertically placed, the thread end processing device is used for processing thread ends and thread tails of the scaffold full ofthe scaffold, the scaffold is hoisted to transfer the scaffold full of the scaffold and the scaffold empty of the scaffold, the automation degree is high, and the requirement for high-speed productionis met.

The invention relates to the technical field of motor equipment, in particular to a motor bush pressing-in device. The motor bush pressing-in device comprises a bottom plate, a guide rail, a moving base, a bush pressing-in table, a fixed stand column and a cylinder. According to the motor bush pressing-in device disclosed by the invention, a brush can be pressed into a motor shell, then a motor stator is arranged in the bush, and if the motor stator needs to be changed, the bush can be taken out to change stators of different model numbers, and therefore, the problems of troublesome change and short service life of conventional motor stators are solved. In addition, the device is simple in operation, convenient to use, convenient to move and suitable for popularization and use.

The invention discloses a gas stove nozzle capable of switching multiple gas types. The gas stove nozzle comprises an air flow pipe, wherein a screw ring is arranged on the air flow pipe. The gas stove nozzle comprises a porous positioning rod, wherein a plurality of air injection holes with different apertures are formed in the porous positioning rod, a circular groove communicating with an innerhole of the air flow pipe is formed in the air flow pipe, the porous positioning rod can be tightly matched with the circular groove, and an air injection hole formed in the porous positioning rod communicates with the inner hole of the air flow pipe. By the adoption of the structure, natural gas and liquefied gas can be switched by the gas stove nozzle, and the problem that because the nozzle isonly suitable for one type of gas, the nozzle is troublesome to replace when the gas (the natural gas and the liquefied gas) is changed is solved.

The invention discloses a corrugated steel web combination ribbed beam and a construction process of the corrugated steel web combination ribbed beam. The corrugated steel web combination ribbed beam comprises bottom flange plates, top flange plates and corrugated steel webs, wherein the corrugated steel webs are arranged between the bottom flange plates and the top flange plates in a supporting mode. A prestress system is laid in each bottom flange plate and comprises a middle prestress structure and two side prestress structures. The construction process of the corrugated steel web combination ribbed beam comprises the following steps: firstly, the prestress systems and the corrugated steel webs are laid and installed; secondly, the bottom flange plates are constructed, wherein according to the step 201, concrete is poured into the middle of a segment of each bottom flange plate, and primary prestress tensioning is conducted; according to the step 202, the concrete is poured into the rest of each bottom flange plate, and secondary prestress tensioning is conducted; the top flange plates are constructed before the bottom flange plates are constructed or when the bottom flange plates are constructed or after construction of the bottom flange plates is completed. According to the corrugated steel web combination ribbed beam and the construction process of the corrugated steel web combination ribbed beam, the design is reasonable, construction is convenient, and the corrugated steel web combination ribbed beam which is constructed and formed is reasonable in stress, good in usage effect and capable of solving various problems of an existing concrete ribbed beam.

The manufacturing method of the invisible aligner based on shape memory material and the invisible aligner thereof comprise the following steps: 1) collecting the oral data of the patient; 2) determining the parameters of the three-dimensional model of the oral cavity; 3) constructing the three-dimensional model of the invisible aligner; The three-dimensional model of the aligner is used to make the invisible aligner; 5) The invisible aligner obtained in step (4) is soaked in water above 37 degrees Celsius and softened, and quickly worn on the patient's dentition; under the oral temperature environment, it will gradually return to A shape in memory for providing the orthodontic force required for tooth movement; also includes clear aligners made according to the above method. The invention has the beneficial effects of solving the trouble of frequent replacement of traditional invisible aligners, shortening the correction process, saving treatment cost and making correction accurate.

The invention discloses a wall-hanging plate for adsorbing formaldehyde and a preparation method thereof. The wall-hanging plate comprises an aluminum plate shell, wherein a rotating rod is rotatablyconnected to one side of the aluminum plate shell, a fixed block is fixed at one end of the rotating rod, a clamping block is fixed on the surface of the rotating rod, a fixed slot is formed in one side of the aluminum plate shell, a spring is fixed on the inner wall of the fixed slot, a connecting block is fixed on one side of the spring, a rubber pad is fixed on one side of the connecting block,a moving block is arranged on the inner side of the fixed slot in a sliding manner, and a groove is formed in the inner wall of the moving block. By pressing the moving block, the fixed block and therotating rod are rotated to drive the clamping block, the surface of the clamping block is clamped to the inner wall of a clamping slot, and then the moving block containing an adsorbing material canbe rapidly mounted and dismounted, so that the problem that an adsorbent of a traditional formaldehyde adsorption device is difficult to be replaced is solved, the adsorption efficiency is greatly improved, the convenience is brought to people, the adsorption of formaldehyde is promoted, and the health of people is guaranteed.

The invention discloses a self-adapted solar energy charging controller, which is a controller using solar energy to discharge a storage battery. The controller comprises a storage battery voltage sampling circuit, temperature detecting circuit, a solar energy battery board sampling circuit, a control circuit that solar energy board charges the storage battery, a load controlling and protecting circuit. The charging is controlled by field effect tube IRL3803S, which has faster speed than the regular controllable electric switch and has a small conducting resistance. The single chip uses PWM storage battery charging mode, ensuring the reasonable state of the storage battery, enhancing using age of the storage battery; the digital signal outputted by the single chip is series-wounded to through and break of the field effect tube IRL3803S of outputting loop. When the storage battery is reversely connected, the safe will not be burned and any components of the controller will nit be damaged; the load current has protecting function for overload and short current. The controller has high efficiency, simple circuit, which can avoid high temperature fo the solar energy battery board array.

The invention belongs to the technical field of environment protection, and specifically relates to a plant plantation box for water treatment. The plant plantation box is composed of a plurality of boxes arranged in a matrix. Each box comprises a rectangular frame. The left side and right side of the upper end face of each rectangular frame are both fixedly provided with a circular ring; in eachhorizontal row, a buckle ring is arranged between two neighbored boxes, the buckle ring clamps two circular rings of two neighbored boxes, the front end face of each rectangular frame is provided witha semi-ring, in each horizontal row, the front end faces of the rectangular frames are provided with a cross bar; two ends of the cross bar are fixed on two banks of a river; the semi-rings are hungon the cross bar; the lower end of each rectangular frame is fixedly provided with a dam board, the dam boards form the rectangular frame; the lower end face of the dam board is provided with a base plate, and the dam boards and the base plates are all provided with a plurality of through holes. The problem that in the prior art, water plants are difficult to replace is solved.

The invention discloses an oral cavity cleaning device for clinical examination in the department of stomatology, the oral cavity cleaning device comprises a whole device, a supporting cylinder and a connecting frame, the supporting cylinder is fixedly connected to the middle of the whole device, a lifting cylinder is fixedly connected to the interior of the supporting cylinder, an inner rod is connected to the top of the lifting cylinder in an embedded manner, and a first fixing clamp is connected to the right side of the bottom of the supporting cylinder in a lap joint manner; a suction cup is fixedly connected to the bottom of the supporting cylinder, a second fixing clamp is connected to the left side of the bottom of the supporting cylinder in a lap joint mode, a user can conveniently fix the whole device to the desk edge through the second fixing clamp and the first fixing clamp, and the user can rotate the first fixing clamp and the second fixing clamp downwards through corresponding lap joint cylinders. When the device is fixed on the table top, the whole device is extruded downwards, and when the device cannot be extruded, a screw penetrates through a through hole to be screwed into the table top for fixing, so that the effect of fixing the whole device on the table top can be achieved, and a user can conveniently adjust a fixing mode according to actual conditions through the fixing mechanism, so that the device is integrally fixed on the table top.