180results about How to "Timely supplement" patented technology

The invention belongs to the field of ring main units, and particularly relates to a ring main unit pressure relief device and a ring main unit thereof.The ring main unit pressure relief device comprises a cabinet body and a gas treatment assembly, the gas treatment assembly comprises a first pressure relief pipeline, the first pressure relief pipeline is fixedly installed on the outer wall of the cabinet body, and one end of the first pressure relief pipeline extends into the cabinet body; the bottom of the first pressure relief pipeline fixedly communicates with a second pressure relief pipeline, the bottom of the second pressure relief pipeline fixedly communicates with a sleeve, and a second one-way valve is arranged on the inner wall of the second pressure relief pipeline; according to the ring main unit pressure relief device and the ring main unit thereof, low fluoride in SF6 gas is treated through the gas treatment assembly, the situation that the low fluoride is exhausted to the outside and threatens the health of surrounding constructors is avoided, the SF6 gas exhausted from the gas conveying pipeline circulates along the inclined face of the bottom of the extension plate, the SF6 gas can be better fused with an alkaline solution, and the safety of the ring main unit is improved. And by arranging the spoiler, SF6 gas is wrapped, and the retention time of the SF6 gas in the alkaline solution is prolonged.

The invention discloses an emulsifying device for salicylic acid preparation, which belongs to the technical field of salicylic acid preparation and processing, and has the technical key points that the emulsifying device comprises an emulsifying box, and an annular rotary stirring mechanism can be correspondingly driven to adjust the stirring mode and perform rotary stirring operation through an arranged stirring liquid conveying control mechanism; by combining two stirring modes of rotation and revolution, salicylic acid and an emulsifier can be mixed and stirred more comprehensively from multiple angles, the uniformity of the emulsion is greatly improved by the stirring mode, and in addition, the stirring speed is greatly improved by randomly adjusting the stirring position. According to the emulsifying machine, the same equipment can meet various different emulsifying processing requirements, so that the investment cost of the equipment is reduced, the liquid conveying mechanism can be correspondingly driven to perform liquid adding operation through the arranged stirring liquid conveying control mechanism, the manual operation is remarkably reduced, the production cost is reduced, and the production efficiency is improved; the stirring device has the advantages of convenience in stirring adjustment, diversified stirring modes and convenience in automatic liquid adding.

The invention belongs to the technical field of expressway crack detection, and discloses an expressway crack detection device and a detection method thereof.The expressway crack detection device comprises a device body, a sound wave detector host and a control box are fixedly connected to the top of the device body, and the sound wave detector host is connected with a pair of transducer probes through data lines; according to the device, through cooperation of the transverse position adjusting assembly, the scale plate and other structures, the measurement distance can be conveniently controlled, through arrangement of the adjusting mechanism, a sliding block on a linear guide rail drives a warped plate to move, the warped plate pulls a fixing frame to drive a transducer probe to move synchronously, the measurement distance is adjusted, and the measurement precision is improved. Through cooperation of the adjusting mechanism, the coupling agent supplementing assembly and other structures, the coupling agent can be supplemented in time, and the first telescopic rod pushes the limiting sleeve to drive the push rod to move up and down.

The invention belongs to the technical field of flow battery energy storage, and more specifically relates to a near-neutral total iron flow battery negative electrode electrolyte and a preparation method thereof, the negative electrode electrolyte is prepared from an iron salt, a chelating agent, a stabilizing agent, a supporting electrolyte and water at a certain temperature, the total iron concentration is 0.1-1.0 M, the molar ratio of the chelating agent to the iron salt is 1.2-2.0, the molar ratio of the stabilizing agent to the supporting electrolyte is 1.2-2.0, and the total iron concentration is 0.1-1.0 M. The molar ratio of the stabilizer to Fe is 0.25-1.0, the supporting electrolyte concentration is 0-2.0 mol / L, and the pH value is 7.0-8.5. The near-neutral negative electrode electrolyte for the total-iron flow battery is high in stability, can effectively inhibit generation of ferric hydroxide precipitates under a neutral condition, improves the stability of iron ions, greatly prolongs the cycle life of the total-iron flow battery, and can be widely applied to various aqueous flow batteries.

The invention provides a maintenance work order automatic creation method and system combined with equipment fault prediction, and relates to the field of data processing systems or methods for prediction purposes, and the method comprises the steps: carrying out the matching of corresponding equipment information based on a fault prediction result outputted by a fault prediction model; according to the fault prediction result and the equipment information, resources needed by maintenance of each piece of equipment are determined; generating a preliminary maintenance work order draft according to the work order template and the resources required for maintenance, and performing priority ranking according to the predicted severity level to obtain a priority sequence; matching the current human resource and the current accessory resource to a corresponding preliminary maintenance work order draft according to the priority sequence to obtain a preliminary maintenance work order; and generating a formal maintenance work order based on an audit or modification result of the user. By implementing the method, the interference intervention of artificial resource allocation on the overall efficiency in the process of automatically creating the maintenance work order can be reduced by automatically allocating the maintenance resources, so that the overall efficiency of creating the maintenance work order can be improved.

A trapper for stored grain pests in a grain pile belongs to the technical field of stored grain pest trapping and comprises a trapper mounting seat, a trapper main body pest trapping tube, a trapper camera module and a trapper bottom pest collecting conical head. The trapper mounting seat, the trapper main body insect trapping tube, the trapper camera module and the trapper bottom insect collecting conical head are sequentially connected from top to bottom; insect trapping holes for pests to pass through are formed in the cylinder wall of the upper end of an insect trapping pipe of the trap body, an attractant containing bottle and a bottle cap are arranged in the lower end of the trap body, emission holes are formed in the bottle cap, and a miniature electronic liquid level meter is arranged in the attractant containing bottle. The insect trapping device is simple in structure and easy and convenient to operate, attractants can be added to improve the insect trapping rate, the residual quantity of the attractants can be pre-warned, the inner insect trapping condition can be observed in real time, meanwhile, the insect trapping device is convenient to install and use, functions are convenient to expand and upgrade, and the insect trapping device is suitable for industrial production and application.

The invention discloses high-speed wire cutting machine tool equipment for precision machining, and relates to the field of high-speed wire cutting machine tools, the high-speed wire cutting machine tool equipment for precision machining comprises a cutting machine tool and a control cabinet mounted on one side of the cutting machine tool, the control cabinet is used for controlling the cutting machine tool, and an operation table for operation is mounted on the top side of the control cabinet; one side of the control cabinet is provided with a heat dissipation fan, and the other side of the control cabinet is provided with an air inlet hole used for air inflow. It needs to be explained that in the embodiment of the invention, through absorption of the filter boxes, air entering the control cabinet can be kept clean and dry, safe use of electric appliance elements in the control cabinet is effectively guaranteed, switching of the filter boxes can be automatically completed, and it is guaranteed that the control cabinet can continuously drive the cutting machine tool to conduct precise cutting; besides, the filter box is actively cleaned through the cleaning strip, smoothness of the filter box is guaranteed, air circulation in the control cabinet is further guaranteed, the control cabinet obtains a good heat dissipation effect, and potential safety hazards are eliminated.

The invention relates to a traditional Chinese medicine composition with functions of tonifying qi and nourishing blood for livestock. The traditional Chinese medicine composition comprises the following components in parts by weight: 10-30 parts of astragalus membranaceus, 10-40 parts of spina gleditsiae, 10-20 parts of angelica sinensis, 10-20 parts of codonopsis pilosula, 10-30 parts of uniflower swisscentaury root, 10-30 parts of ligusticum wallichii, 10-20 parts of cowherb seed, 10-20 parts of fruit of liquidambar formosana hance and 1-10 parts of iron sucrose. The traditional Chinese medicine composition is scientific and reasonable in component, free of toxic and side effects and medicine residue, convenient to take and low in cost, has the functions of tonifying qi and nourishing blood, stimulating the menstrual flow and prompting lactation, and is capable of effectively treating diseases of postpartum hypogalactia, breast milk stoppage and the like which are normal in livestock.

The invention discloses a dust filtering system for bridge engineering construction and a filtering method.The dust filtering system comprises an air draft device, an aeration dust removal device and a waste water precipitation device, the waste water precipitation device comprises a plurality of precipitation units, the aeration dust removal device is connected with a drainage channel, the drainage channel is communicated with the precipitation units, and the precipitation units are communicated with the aeration dust removal device. A buoyancy opening and closing mechanism is arranged in each precipitation unit and can close a drainage channel where the precipitation unit is located after the precipitation unit is filled with wastewater and open a water inlet of the adjacent precipitation unit at the same time; a plurality of water outlets are further formed in the two sides of the precipitation unit, and each water outlet is provided with a floating ball normally-closed switch which is used for opening the water outlet when the liquid level descends; the water outlets in the two sides of the precipitation unit are sequentially and alternately arranged in the vertical direction. According to the invention, the problem of slow filtration of traditional precipitation type wastewater is solved, so that the treatment efficiency of dust filtration is improved.

The utility model relates to the technical field of film covering printing equipment, and discloses a material receiving device for a printing film covering machine, which comprises a material receiving assembly arranged on the blanking side of a film covering machine main body. Under the gravity action of the printed products, the deformation amount of the elastic springs is small, at the moment, the surface of the uppermost printed product is flush with the surface of the printed product receiving plate in the initial state, the deformation amount of the elastic springs is increased along with increase of the number of the received printed products, and the printed product receiving plate slowly moves downwards; and the cushion blocks at the bottoms of the printed product receiving plates move together with the printed products after making contact with the conveying belt, the material receiving efficiency can be guaranteed, new printed product receiving plates can be rapidly supplemented to the surfaces of the lap joint blocks, it is guaranteed that the printed product receiving operation is continuously conducted, and the material receiving efficiency is further guaranteed. And a series of problems caused by too shallow or too deep depth of the material receiving box are effectively avoided.

The invention relates to the technical field of blade machining, and discloses a hard alloy blade numerical control machining device which comprises a mounting bottom plate and a mounting column, a collecting box is mounted in the middle of the top end of the mounting bottom plate, a first motor is mounted on the outer side of the collecting box, and the output end of the first motor is fixedly connected with a first transmission shaft; a grinding wheel is fixedly connected to the outer side of the first transmission shaft, one end of the first transmission shaft penetrates through the exterior of the collecting box and is fixedly connected with two sector gears, two fixing columns are fixedly connected to the outer side of the collecting box, and a rack plate is slidably connected to the tops of the fixing columns. Cooling liquid is automatically sprayed to the blade through rotation of the grinding wheel, power generated by rotation of the grinding wheel is ingeniously utilized, and synchronous and accurate automatic operation of the cooling liquid spraying process and the grinding process is achieved. The automatic spraying mode can ensure that the cooling liquid uniformly covers the surface of the blade, so that the cooling effect is more efficient and stable.

The utility model discloses an oxyhydrogen atomizing machine which comprises a water storage tank, an electrolytic bath, an oxygen water collector, a hydrogen water collector and two groups of gas path radiators, the water outlet end of the water storage tank is connected with the water inlet end of the electrolytic bath; the electrolyte enables water to be decomposed into oxygen and hydrogen under the action of direct current in the electrolytic bath; the oxygen output end of the electrolytic bath is connected with the water inlet end of the water storage tank through a group of gas path radiators, the oxygen output end of the water storage tank is connected with the oxygen water collector, and dried and cooled oxygen is obtained after separation by the oxygen water collector; the hydrogen output end of the electrolytic bath is connected with the hydrogen water collector through the other group of gas path radiators; and dry and cooled hydrogen is obtained after separation by the hydrogen water collector. The gas path radiator is additionally arranged at the gas output end of the electrolytic bath, gas electrolyzed by the electrolytic bath is pre-cooled and then separated through the water collector, finally, dry and pure hydrogen and oxygen are obtained, and influences on subsequent gas purity, the service life of equipment and safety are effectively avoided.

The invention discloses a seedling culture monitoring device for forest cultivation, and belongs to the technical field of forest cultivation. The seedling culture monitoring device for forest cultivation comprises a base, a driving groove is formed in the top end face of the base, a belt is arranged in the driving groove, a pair of first gears is installed in the driving groove through bearings, and the two first gears are located in the two ends of the belt respectively; a second gear is installed in the driving groove through a bearing, a third gear is installed in the driving groove through a bearing, a transmission column is welded to the end face of the top of the third gear, a seedling raising box is welded to one end of the top of the transmission column, a stand column is welded to the end face of the top of the base, and a driving motor is in threaded connection with the outer wall of one side of the stand column. The problems that in the prior art, in the using process, illumination supplement cannot be conducted on saplings in time in the dark environment, sapling growth is not facilitated, the sapling cultivation effect can be reduced, and the cultivation time can be prolonged are effectively solved.

The vibration absorption device comprises a shell and a buffer piston which are coaxially arranged, the buffer piston is sleeved with the shell, and the vibration absorption device further comprises at least two buffer cavities, an oil inlet way and a balance valve which are distributed on the periphery of the buffer piston at intervals in the axial direction; the oil inlet path is arranged on the shell and is communicated with at least one buffer cavity; the buffer cavities are communicated through the balance valves, the balance valves are used for changing the communication relation between the buffer cavities according to the pressure difference between the buffer cavities, the buffer cavities can be communicated in time, the buffer cavities needing oil supplementing are subjected to oil supplementing, sudden pressure drop of the cavities is avoided, and the phenomena of negative pressure and cavitation are avoided. Damage to parts in the rock drill is reduced, and the vibration absorption effect is improved. The second aspect provides a rock drill comprising the vibration absorption device in the first aspect, an impact piston coaxially arranged in the buffer piston in a sliding mode, a bit shank coaxially arranged on the front side of the impact piston, and a plug buffer spacer bush arranged on the impact piston in a sleeving mode and located between the buffer piston and the bit shank.

The utility model provides a jaw crusher which comprises a base, a crusher body is arranged on the base through a support, a support stretching across the upper side of the crusher body is arranged on the base, a feeding box is vertically arranged on the support in a vibrating mode, the lower end of the feeding box is in a contractive prismatic table shape, a feeding port is formed in the top of the feeding box, and a discharging barrel is arranged at the bottom of the feeding box. And a control valve is arranged on the discharging barrel. According to the jaw crusher disclosed by the utility model, not only can the basic requirement of crushing and processing materials be met, but also the feeding amount can be automatically controlled, the workload of workers is reduced, and the overall efficiency of crushing and processing the materials is improved.

The invention provides a flat heat pipe with a multi-scale wick. The flat heat pipe comprises a lower bottom plate, the lower surface of the multi-scale liquid absorption core is fixedly connected with the upper surface of the lower bottom plate, the multi-scale liquid absorption core is foamy copper internally provided with a honeycomb-shaped V-shaped channel, and a hydrophilic modification layer is formed on the surface of the multi-scale liquid absorption core; and the edge of the lower surface of the upper cover plate is connected with the edge of the upper surface of the lower bottom plate so as to seal the multi-scale wick.

The utility model relates to the technical field of ice making equipment, and discloses an ice maker with a filter component, which comprises an ice maker main body, the ice maker main body is communicated with a water tank, the filter component is mounted in the water tank, water in the water tank flows to the bottom of the water tank after being filtered by the filter component, and the filtered water is to be subjected to ice making treatment; and the water tank is arranged on the ice maker main body or is externally arranged on one side of the ice maker main body. The water purifier has the advantages of being capable of filtering a water source, convenient to supplement water and compact in structure.

The utility model discloses an engineering surveying and setting-out device relates to engineering surveying tool technical field. The engineering surveying and setting-out device, including main unit, spool and ink chamber, spool is inserted in the inside of main unit, and the ink chamber is clamped in the outside of main unit. The main unit is composed of handle and positioning frame, and the positioning frame is connected to the outside of handle, and the positioning frame includes frame body, frame cover and carousel, and the frame cover is hinged to the frame body, and the carousel is inserted in the inside of frame body, and the outside of frame body is equipped with the clamping groove, and the outside of frame cover is equipped with the clamping block and the slot, and the clamping block is clamped with the clamping groove. The utility model discloses a reasonable structure design, has realized the convenient elastic line marking operation, and the spool replacement is convenient, and the ink chamber dismouting is convenient, has improved the efficiency and accuracy of engineering surveying and setting-out, and has stronger practicality.

The utility model aims to provide an intelligent temperature control rice bucket which comprises a storage device, and the storage device comprises a bucket body, a bucket cover, a display panel and a photoelectric sensor and is used for storing rice. The rice discharging device comprises a metering device and a rice discharging hopper and can quantitatively discharge rice; the temperature control device comprises a temperature changing assembly, an air outlet and an exhaust outlet and can conduct temperature control and heat preservation on the rice in the storage device, and therefore the rice is prevented from going bad.

The utility model discloses a full-sealed oil-immersed high-capacity power transformer, which relates to the technical field of transformers and comprises an oil tank, a tank cover is mounted on the top surface of the oil tank, cooling components are assembled on two sides of the top surface of the tank cover, and an oil pump is mounted above the tank cover. The louver adopts a gap type structure and a stepped inclined shape, heat in the radiating fins can be smoothly radiated outwards through gaps among the gap type structures by the aid of the gap type structure, and the stepped inclined shape guides an air flowing path, so that the heat in the radiating fins can be radiated outwards by the aid of the gap type structure regardless of blowing of external natural wind. The air can smoothly penetrate through the protective cover along the inclination angle of the shutter and fully flow through the heat dissipation fins when the transformer is in a power-off state or is in air convection caused by heat dissipation of the transformer, and meanwhile, most dust is effectively blocked through the shutter, so that air circulation can be guaranteed, and most dust can be blocked.

The utility model provides an automatic drip irrigation emitter for fruit trees. The automatic drip irrigation emitter for the fruit trees comprises a water containing tank, one side of the water containing tank is fixedly communicated with a water inlet pipe, and a water receiving hopper is arranged at the water inlet end of the water inlet pipe; the support is fixedly installed on one side of the water containing tank, a lifting motor is fixedly installed on the support, a lifting screw rod is rotatably installed on the support, one end of the lifting screw rod is fixedly connected with an output shaft of the lifting motor, a sliding seat is installed on the lifting screw rod in a threaded mode, and the sliding seat is fixedly connected with the lifting motor. The sliding seat is attached to the inner wall of the support. The water storage tank is fixedly mounted on the sliding seat, a plurality of transverse pipes are fixedly communicated with the bottom of the water storage tank, a plurality of drippers are arranged on the transverse pipes, and valves are arranged on the transverse pipes. The automatic drip irrigation emitter for the fruit trees has the advantage of being capable of being adjusted according to the height of the fruit trees and the range of tree disks.

The utility model relates to the technical field of automatic seedling raising, and discloses a three-dimensional seedling raising device which comprises a three-dimensional seedling raising equipment rack, the inner wall of the three-dimensional seedling raising equipment rack is fixedly connected with a spraying system, the right end of the three-dimensional seedling raising equipment rack is fixedly connected with an electric control cabinet, and the front face of the electric control cabinet is fixedly connected with a control panel. The whole device can be composed of the nutrient solution supply system, the middle pipeline conveying system, the spraying system, the planting platform and the control system, the required nutrient solution is automatically proportioned through the stock solution bottles attached to the edge of the nutrient solution box body, the nutrient solution box body is used for storing the nutrient solution, and the amount of the nutrient solution is determined according to different seedling growing scales. Generally, a liquid level sensor is arranged to monitor the liquid level, a nutrient solution is conveyed to each seedling raising layer through reasonably arranged pipelines, and temperature, humidity, nutrient solution concentration and pH value sensors are arranged to monitor seedling raising environment parameters in real time.

The invention discloses a disease injection positioner, and relates to the technical field of medical instruments. The disease injection positioner comprises a bottom plate, a support is mounted at the top of the bottom plate, a guide cylinder is fixedly connected to the middle of the support, and an elastic air bag is mounted at the bottom of the guide cylinder. Through mutual cooperation of the support, the bottom plate, the guide cylinder, the fixing cylinder and other structures, an injector can be effectively fixed, accurate positioning can be achieved during medicine injection by means of linear movement of the fixing cylinder in the guide cylinder, deviation of the medicine injection position caused by deviation of the injector is avoided, and the injection efficiency is improved. And through mutual cooperation of structures such as a downward pressing block, an adjusting plate, a downward pressing plate, a second elastic piece and a linear guide rail, the disinfection roller can be automatically driven to horizontally move on the bottom plate when the injector moves downwards, and the to-be-injected position of the patient can be automatically disinfected before puncture.

The present invention provides a monitoring method for steel bar management at a construction site, which relates to the technical field of steel bar management, and aims to achieve more accurate, timely and efficient steel bar management, including using colored wireframes to divide the steel bar storage area in a steel bar warehouse, and setting a type mark for each steel bar storage area to calibrate the steel bar type of the corresponding steel bar storage area; arranging multiple image acquisition devices to acquire images of each steel bar storage area; identifying the placement position, quantity and type of steel bars in each steel bar stacking area through the top view and side view of the acquired image; judging whether there are abnormal conditions, and the abnormal conditions include the placement position of the steel bar exceeding the preset range, the wrong area for the steel bar placement and the number of steel bars of a certain type being lower than the corresponding quantity threshold. The present invention has the advantages of intelligent, efficient, high-quality and safer management of steel bars.

This utility model relates to the field of imaging consumable testing and reliability assessment technology, and discloses a toner drum for measuring the fatigue resistance of a photosensitive drum. The drum includes a housing, an exposure lamp inside the housing, a photosensitive drum on the inner wall of the housing, and a charging roller on the inner wall of the housing. The system repeats four processes: charging, exposure, development, and cleaning. After n cycles, the system stops for testing. When the parameters exceed a standard threshold, the test stops. The number of cycles at this point is the fatigue limit of the photosensitive drum. During the movement of the scraper, insufficient pressure may prevent the scraping of excess toner, while excessive pressure may wear down the sleeve surface. Rotating the knob moves the threaded rod. Upward movement of the threaded rod compresses the first spring, while downward movement stretches it. This allows the pressure between the scraper and the developing roller to be adjusted via the first spring. Pulling out the toner cartridge allows for timely replenishment of toner.

The utility model relates to the technical field of corn breeding, in particular to a seedling cultivation device for corn breeding cultivation, which comprises a cultivation box and a spraying device, the surface of the cultivation box is fixedly connected with a cultivation tray, the surface of the cultivation tray is provided with a plurality of planting grooves, and the spraying device is arranged on the surface of the cultivation tray and comprises a trapezoidal plate. The trapezoid plate is fixedly connected with the culture tray, the upper surface of the trapezoid plate is fixedly connected with a support, the upper surface of the support is fixedly connected with a tank body, one side of the tank body is fixedly connected with a feeding pipe, a sealing plug is inserted into the surface of the feeding pipe, and the lower surface of the tank body is fixedly connected with a discharging pipe. The nutrient solution is controlled to flow out through opening and closing of the round hole and the water outlet when the cylinder rotates, the irrigation time and flow can be flexibly adjusted according to requirements, waste of the nutrient solution is reduced, the nutrient solution can evenly and accurately drip into the planting groove, and stable water and nutrient supply is provided for corn seedlings.

The utility model discloses an atomizer, an atomization assembly and an electronic atomization device.The atomization assembly comprises a liquid storage device and an atomization body, the liquid storage device comprises a first shell, and a first storage cavity is formed in the first shell; the atomization main body comprises an atomization core, a liquid storage body made of a porous material, a liquid guide body made of a porous material and a second shell connected with the first shell, an atomization channel and a second storage cavity are formed in the second shell, a liquid guide channel is formed between the second storage cavity and the first storage cavity, and the atomization core is installed in the atomization channel; the liquid storage body is installed in the second storage cavity, the liquid storage body is used for adsorbing atomized liquid in the second storage cavity and transmitting the atomized liquid to the atomization core, the liquid guide body makes contact with the liquid storage body, at least part of the liquid guide body is located in the liquid guide channel, and a gap exists between the liquid guide body and the inner wall of the liquid guide channel to form an air return channel; the air return channel communicates with the first storage cavity and the second storage cavity. The atomization assembly has the advantage of being low in liquid leakage risk.

The application discloses a material changing mechanism of a beveler, which comprises a mounting frame, a beveling assembly arranged on the surface of the mounting frame, the beveling assembly being used for beveling plate materials, a weighing assembly arranged on the lower side wall of the mounting frame, a placing plate arranged in the mounting frame through the weighing assembly, a U-shaped plate fixedly arranged on the side of the placing plate, and a storage box fixedly arranged between the opposite surfaces of the U-shaped plate. The beveling assembly drives the backward movement of a material changing plate in the material changing assembly. When the beveling assembly is separated, the beveling assembly drives the forward movement of the material changing plate in the material changing assembly, so that the material changing plate pushes the plate materials without beveling into the lower mold. The beveling assembly continuously bevels the plate materials, so that the material changing assembly continuously drives the plate materials into the beveling assembly and pushes the plate materials formed in the beveling assembly out, thereby avoiding manual feeding and discharging of the beveler, and making the beveler more convenient to use.

The utility model discloses a safe and practical liquid nitrogen freezing device. The safe and practical liquid nitrogen freezing device comprises a placing box and a placing trolley, the placing box comprises a box body, a box cover and a handle; the box cover is matched with the box body in size; the two handles are installed on the two sides of the box body respectively. The box body and the box cover are provided with two layers; the placing trolley comprises a connecting rod, a placing groove, an idle layer and a moving device; the top end of the connecting rod is fixedly connected with the placing groove; the idle layer is fixedly connected with the lower end of the connecting rod; an opening is formed in one corner of the upper end of the box; the size of the placing groove is matched with that of the box body. The two layers of containing boxes made of different materials are arranged to serve as a device for temporarily containing liquid nitrogen, the containing boxes can be transferred in combination with the containing trolley and the moving device at the bottom end of the containing trolley, and the serious risks that the device for containing the liquid nitrogen accidentally falls on the ground, liquid nitrogen leaks, medical workers are frostbitten, and a frozen carrying rod falls away from the liquid nitrogen are avoided.

The utility model discloses a liquid level visualization automatic induction soap dispenser which comprises a liquid soap bottle provided with an inner cavity and an intelligent pump head arranged on the liquid soap bottle. The liquid soap bottle comprises a bottom shell, a bottle body and a liquid level perspective ring connected between the bottom shell and the bottle body. A first limiting groove is annularly formed in an opening of the lower end of the bottle body, and a first limiting ring used for being embedded into the first limiting groove is annularly and upwards arranged at the top of the liquid level perspective ring in an extending mode. A second limiting groove is annularly formed in the top of the bottom shell, and a second limiting ring used for being embedded into the second limiting groove is annularly and downwards arranged at the bottom of the liquid level perspective ring in an extending mode. And the height of the liquid level perspective ring on the liquid soap bottle is less than or equal to 1 / 4 of the height of the liquid soap bottle. According to the liquid soap bottle, the liquid level perspective ring is arranged on the liquid soap bottle, and the height of the liquid level perspective ring on the liquid soap bottle is smaller than or equal to 1 / 4 of the height of the liquid soap bottle, so that a user can visually observe whether liquid soap needs to be supplemented or not without opening a bottle cap, the user can conveniently supplement the liquid soap in time, and normal use is prevented from being influenced by insufficient liquid soap.