210results about How to "Improve circulation rate" patented technology

The invention provides a system and method for quality monitoring and traceability of the life cycle of isolated biological samples, which is characterized in that: the samples are always kept at a specified temperature during the process from collection to storage of samples, and each link is handed over No need to open the box for inspection, and completely record the temperature information of each sample itself, the operator information of each link, the operation time and other important information in the whole process, the operation is simple and fast, the handover time is shortened, and the sample circulation rate is improved; System administrators can learn more about the temperature information of samples in transit and storage and the user-related information associated with the samples through the PC client, and can quickly track the cause of the problem and the relevant responsible person when a problem occurs.

The invention provides an electronic book advertising platform which comprises an electronic platform, wherein an electronic book and advertisement data uploaded by at least one electronic book supply end and at least one advertisement supply end are stored in the electronic platform; a member end uploads a keyword and member basic data and / or a use record to the electronic platform to query a relevant electronic book according to the keyword and select the advertisement data according to the keyword, the member basic data and / or the use record, and the selected advertisement data is inserted into the queried electronic book and transmitted back to the member end. Accordingly, in the way of inserting an advertisement in the electronic book, the member end not only can download the electronic book at low cost and even by being free of charge to improve the click rate and circulation rate of the electronic book, and the aim of selling goods by the advertisement can be achieved.

The invention discloses a preparation method and application of a conductive hydrogel capable of slowly releasing drugs and factors. The preparation method comprises the following steps: step 1, a conductive macromolecular monomer solution is prepared, an oxidant is added, and after sufficient reaction, a conductive macromolecular polymer is obtained; step 2, a concentrated aqueous dopamine solution is prepared, the conductive macromolecular polymer obtained in step 1 is added, and after sufficient reaction, a polydopamine / conductive macromolecular polymer compound is obtained; step 3, a metalion salt solution and an organic ligand solution are prepared; step 4, the polydopamine / conductive macromolecular polymer compound is added into the metal ion salt solution, and after uniform mixing,the organic ligand solution is added; and reaction is sufficiently carried out; step 5, the metal-organic framework / polydopamine / conductive macromolecular polymer compound is added into a monomer ordouble-bond biomacromolecular solution; and after additive is added, the needed hydrogel is formed by polymerization. The conductive hydrogel has excellent conductivity and electrochemical activity, and can be used in the preparation of drug carriers and biological electrodes.

The invention discloses a battery swapping station service end, a battery swapping processing method, a battery swapping method for a battery swapping station and a battery swapping system for a battery swapping station. The battery swapping processing method includes the following steps that: SA, a battery swapping request sent by a battery swapping station smart device is acquired; SB, a batteryswapping command is sent to the battery swapping station smart device according to the battery swapping request; and SC, electric energy consumed for a swapped battery to be fully charged is acquired, and battery swapping fees are calculated. According to the battery swapping processing method of the invention, a pre-authorized fee charging method is adopted, the waiting time of an electric vehicle user is shortened, the circulation rate of the battery swapping station is improved, and battery swapping efficiency is improved.

The invention relates to an online transaction method and a system thereof for virtual treasures in online games, which mainly utilizes a virtual treasure concentrated storage device, then confirms tradable treasures of sellers and validity and sale data of the game via an authentication mechanism, and further stores in the device collectively. A transaction system connected with the virtual treasure concentrated storage device is connected with a transaction first party (seller), a transaction second party (buyer) and a game operator via a network system. The transaction second party initiates a connection with a transaction system and enables a transaction account via a transaction user authentication mechanism so as to take an entrusted purchase action for submitting treasure codes, transaction price and quantity data to the transaction system to carry out transactions, which are automatically matched in a set time via the system, and when the treasure codes and prices of both buyers and sellers are equal, the matching actions are automatically carried out for undertaking and finishing the transaction.

The invention provides an annular radial-flow negative-pressure suction internal loop photoelectric catalytic reactor, comprising a photoelectric catalysis oxidation reaction system and an annular radial-flow negative-pressure suction internal loop water inlet system, wherein the photoelectric catalysis oxidation reaction system comprises a plate-type tubular DSA anode and a mesh-type tubular titanium cathode; a granular photoelectric catalyst is filled between the anode and the cathode; an ultraviolet generator is arranged in the mesh-type tubular titanium cathode; the annular radial-flow negative-pressure suction internal loop water inlet system is arranged at the lower part of the photoelectric catalysis oxidation reaction system; a liquid injection pipe is arranged at the center of the water inlet system; a plurality of pipelines with adjustable lengths are arranged at a bottleneck of the liquid injection pipe; the liquid injection pipe is communicated with an annular radial-flow water feeder which is densely distributed with constant-diameter round holes in a bottom region of the reactor; a gas injection pipe is arranged at the top of the reactor; an air inlet of the gas injection pipe is connected with a compressed air pump; an air outlet is connected with the atmosphere; the bottleneck is connected with an exhaust pipe at the top of the reactor; and hydrogen generated in the reactor is diluted and discharged.

The invention discloses a second-hand car condition detecting and grade determining method. The method comprises the following steps that S1) cars are classified into two detection item types, detection modules, detection points and detection items according to structures of the second-hand cars; S2) each detected car is detected by the detection points gradually, and the detection items with problems are recorded and marked; S3) a score of the detection module is calculated, and points are deducted from the detection module according to the detection items with the problems; S4) the total score is calculated, the scores of all the detection modules are added to obtain the total score of the car; and S5) the car grade is calculated according to the correspondence of the total score grades. According to the invention, present data can be corrected via historical data, the identification efficiency is high, transaction is convenient, a second-hand car seller can know the car conditions more accurately, use is convenient and the cost is low.

The invention discloses a copper-core armored power cable with a fire extinguishing function, the cable includes an armored cable body, the inside of the armored cable body is fixedly connected with afixing device, a cable core is fixedly connected to the inside of the fixing device, the outer side of the cable core is fixedly connected with an insulating layer, the outer side of the insulating layer is fixedly connected with a shielding layer, the outside of the fixing device is filled with a filling layer, and a first protective layer is fixedly connected to the outer side of the filling layer. The fixing device is arranged to fix the cable core and a fixing baffle plate is arranged as a member made of heat dissipating silicone rubber which has good elasticity and extensibility and playing a fixing role, so that the stability of the cable core is improved, and the cable core damage phenomenon is prevented;, at the same time, heat dissipation silicone rubber has good heat dissipationperformance, dissipates the heat generated by the cable core in time, avoids the high temperature of the armored cable body, and prolongs the service life of the armored cable body.

The invention is a control method and a power device used in a process that an electron beam bombards furnace electron beam to produce system power. The method is able to speed up a power open-loop control, and is able to speed up a power pressure and electron beam current sampling signal as a control signal of bombardment power supply, filament power supply and electron beam power, and the electron beam power is steady and easy of being adjusted under a coordinated operation of the three powers. A harmonic is small and has a rather small effect on an electric fence, and power factors and efficiency of the equipment are rather high, and the operation is reliable. A main transformer of an accelerator power supply in the power device is side-connected with three-phase voltage once, and an output terminal is connected with an accelerating voltage bleeder circuit and an electron beam current sampling resistance to output sampling signals. The accelerator power supply further is connected with a thyristor device and a trigger circuit, a soft start controlling circuit, a fault-detecting protection controlling circuit etc. The bombardment power supply comprises a PWM, a bombardment inverter, a bombardment transformer and a bombardment power supply adjustor etc. The filament power supply and the beam power controlling circuit are composed of the PWM, a filament inverter, a filament transformer, a bean power setting potentiometer, a multiplier, a beam power adjustor, a filament power supply adjustor etc.

The invention discloses an LED lamp with an excellent heat dissipating effect and a heat dissipating method thereof. The LED lamp comprises a lamp rod, an illuminating mechanism and a water cooling heat dissipating mechanism. A second air inlet is formed in the upper end of the left side of the lamp rod. A second wind shielding plate is fixedly connected with the left side of the lamp rod and is located on the front surface of the second air inlet. A first air inlet is formed in the upper end of the right side of the lamp rod. A first wind shielding plate is fixedly connected with the right side of the lamp rod and is located on the front surface of the first air inlet. A bracket is fixedly connected with the top end of the lamp rod. The water cooling heat dissipating mechanism is fixedlyconnected with the top end of the bracket. The illuminating mechanism is fixedly connected with the left side of the bracket. Through action of the second air inlet, the second wind shielding plate, the first air inlet, the first wind shielding plate, a heat conduction plate, a fist temperature sensor, a heat dissipating fan, a second temperature sensor, a pump machine and a pipeline, the heat dissipating effect of the LED lamp is effectively improved, the service life of prolonged, and application security is improved.

The invention discloses a method for preparing cyclohexanol and cyclohexanone based on a multi-layer annular flow guide cylinder bubbling reactor. The method comprises the following steps: in a multi-layer annular flow guide cylinder bubbling reactor, oxidizing cyclohexane with an oxygen-containing gas to generate a cyclohexyl hydroperoxide-containing oxidation liquid, extracting an oxidation liquid with a strong base solution so as to obtain a cyclohexyl hydroperoxide-containing alkali water phase and a cyclohexane organic phase, performing a decomposition reaction on the cyclohexyl hydroperoxide-containing alkali water phase in the presence of a high-melting point solvent, performing sedimentation separation on a decomposition liquid, distilling the cyclohexane organic phase so as to obtain a mixture of cyclohexanol and cyclohexanone, and feeding back the extracted cyclohexane solution to the cyclohexane oxidation reaction process. By adopting the method, the oxidation selectivity and the reaction efficiency of the cyclohexane can be greatly improved, and the cyclohexane distillation energy consumption can be reduced.

The invention discloses building decoration paint. The building decoration paint is prepared from, by weight, 7-13 parts of a base material, 20-35 parts of filler, 4-17 parts of pigments, 10-13 partsof an auxiliary agent and 70-90 parts of distilled water. The base material is prepared from, by weight, 10-15 parts of silica sol, 12-20 parts of acrylic resin and 15-20 parts of epoxy resin. The filler is prepared from, by weight, 5-10 parts of light calcium carbonate and 30-35 parts of color sand. The auxiliary agent is prepared from, by weight, 22-27 parts of a whitening agent, 2-4 parts of stabilizing agent and 8-14 parts of a flame retardant. Various materials are processed to form the paint which is stable, high in quality and resistant to fire, combined materials are superior to existing materials, and the paint is less prone to damages and shedding, high in safety and long in service life. The paint has a faint mint aroma which masks intrinsic odor of the paint, so that physical comfort in use of the paint can be improved. After the paint is applied to exteriors of buildings, physical harms can be reduced, and safety of the paint is improved.

The invention discloses a microwave tube permanent magnet focusing system, which comprises an electron gun permanent magnet assembly, a collector permanent magnet assembly and an outer ring transitionring, wherein the electron gun permanent magnet assembly sequentially comprises an upper magnetic screen with an opening formed in the center, an upper magnetic ring and an upper magnetic steel outerring; the collector permanent magnet assembly sequentially comprises a lower magnetic screen with an opening formed in the center, a lower magnetic ring and a lower magnetic steel outer ring, and thelower magnetic ring and the upper magnetic ring have opposite magnetizing directions; and the two end parts of the outer ring transition ring sleeve the upper magnetic steel outer ring and the lowermagnetic steel outer ring, one sides, facing the outer ring transition ring, of the upper magnetic steel outer ring and the lower magnetic steel outer ring comprise an upper matching end surface and alower matching end surface in corresponding match with the end surface of the outer ring transition ring, and in the axial direction of the microwave tube, the distance between the upper matching endsurface and the lower matching end surface is larger than the length of the outer ring transition ring. According to the focusing system disclosed in the invention, tunability of the electron beam focusing length and the magnetic field strength of the microwave tube can be realized, and the electron beams are ensured to be focused in an electron beam channel with the diameter of 0.3 to 0.5 mm andthe length of 10 to 20 nm.

The invention discloses a computer remote control device, and relates to the field of computers. The computer remote control device computer comprises a computer remote control device main body, the front side of the computer remote control device main body is provided with a display screen in an embedded manner, and the front side of the computer remote control device main body is provided with a cleaning sterilizer; a first connecting piece and a second connecting piece are arranged on the two sides of the computer remote control device body respectively, the two ends of the cleaning sterilizer are detachably connected with the first connecting piece and the second connecting piece respectively, and a first T-shaped sliding groove and a second T-shaped sliding groove are formed in the rear side of the computer remote control device body; and a first T-shaped sliding block is mounted in the first T-shaped sliding groove in a sliding manner. The display screen can be cleaned conveniently, ultraviolet disinfection treatment can be conducted on the display screen, protection is provided for a user, the heat dissipation effect can be improved, and a better use prospect is brought.

The invention discloses an energy-saving and environmental-friendly drying device. The energy-saving and environmental-friendly drying device comprises a drying tank, a spiral conveying tank and a battery box, wherein a humidity sensor is fixedly connected to the left end of the top part of an inner cavity of the drying tank; a temperature sensor is fixedly connected to the top end of the inner cavity of the drying tank and located on the right side of the humidity sensor; and a first driving wheel and a first driven wheel are sequentially and movably arranged at the upper end of the inner cavity of the drying tank from left to right. According to the energy-saving and environmental-friendly drying device provided by the invention, through the functions of the first driving wheel, the first driven wheel, a second driving wheel, a second driven wheel, a third driving wheel, a third driven wheel, a circulating fan, an air inlet pipe and an air outlet pipe, a displacement distance of a material in the drying tank can be effectively increased, the contact time of the material and hot air in the drying tank is longer, meanwhile, the hot air flow rate in the drying tank can be further improved, the material in the spiral conveying tank can be preheated, and the material drying efficiency is effectively improved.

The invention discloses a numerical control machine tool with an automatic temperature control function, and relates to the technical field of machine tools. The numerical control machine tool comprises a numerical control machine tool body, wherein a heat dissipation air duct, a heating box and a temperature control module are fixedly installed on the numerical control machine tool body, a heat dissipation fan is rotatably installed in the heat dissipation air duct, the temperature control module is electrically connected with the heat dissipation fan and the heating box, and a cleaning device is arranged in the heat dissipation air duct and comprises a rotating shaft; and the rotating shaft is fixedly installed on the heat dissipation fan, a filter screen is fixedly installed on the inner wall of the heat dissipation air channel, a scraper is fixedly installed on the outer wall of the rotating shaft, and the scraper is installed on the outer wall of the filter screen in a sliding manner. According to the numerical control machine tool with the automatic temperature control function, the cleaning device and the filter screen are arranged on the heat dissipation air channel, so that impurities such as scrap iron can be effectively blocked, the scraping plate can scrape the impurities such as the scrap iron on the filter screen, the flow rate of the filter screen is increased, and the normal heat dissipation efficiency of the heat dissipation air channel is guaranteed.

The invention discloses an extraction method for laminarin. The method includes the steps of airing and smashing fresh laminaria japonica to obtain laminaria japonica powder, conducting hot water extraction after conducting ethyl alcohol degreasing on the laminaria japonica powder, centrifuging the extracting solution to obtain supernate, conducting concentration and impurity removal on the supernate, conducting microfiltration film filtration, sequentially classifying filtrate, conducting ultrafiltration through filter materials of different molecular weights, and conducting drying to obtain laminarin of different molecule classifications. No high-temperature or chemical changes are caused in the operation process, it is sufficiently ensured that activity of polysaccharide and protein is not damaged, and components are highly enriched; by means of the combined effects of centrifugation, microfiltration and ultrafiltration, the high flow rate is kept, the obtained polysaccharide is high in purity and diverse in specification, and the extraction method has the advantages that continuous production and automatic operation are achieved, the energy consumption is low and the production period is short.

The invention discloses a vanadium slag continuous vanadium solution leaching device, and belongs to the technical field of metal smelting. The device comprises a rotary drum body, a rotary supportingassembly is arranged on the outer edge of the rotary drum body, and a driving assembly used for driving the rotary drum body to rotate is arranged on the outer edge of the rotary drum body on one side of the rotary supporting assembly; a discharge hole is formed in the end part of one side of the rotary cylinder body; a cavity is formed in the rotary cylinder body; a central shaft rod is arrangedin the cavity along the axial direction; a plurality of baffles arranged at intervals are arranged in the cavity, through holes formed in the center shaft rod in a sleeving mode are formed in the middles of the baffles, the hole diameters of the through holes in the baffles are sequentially increased from the direction away from the discharging hole to the direction close to the discharging hole,and the hole diameter of the through hole formed in the baffle farthest away from the discharging hole is larger than the diameter of the center shaft rod. According to the device, acid adding continuous leaching is adopted, and acid adding continuous leaching comprises the steps that acid is continuously added into each leaching stirring tank, and mixing is continuously conducted till the leaching reaction is completed. The device is simple in process and short in reaction time.

The invention discloses an industrial control computer with a good heat dissipation effect. The industrial control computer comprises a machine body and a heat dissipation mechanism, the four corners of an inner cavity of the machine body are fixedly connected with supports, the tops of the supports are fixedly connected with a circuit board, the four corners of the top of the circuit board are fixedly connected with clamping pins, one section of each clamping pin penetrates through the circuit board and extends to the inner cavity of the corresponding support, the front side of the machine body is fixedly connected with a data connector, and the data connectors are of a plurality of models. According to the invention, the air duct, the cooling fins and the heat conduction pipe are matched; the heat dissipation factors of the circuit board and the electronic elements on the circuit board are increased; the heat dissipation speed is increased, the heat dissipation effect is improved, through cooperation of the air holes and the baffles, the air circulation speed in the machine body is increased, the heat dissipation effect is further improved, through cooperation of the support and the clamping pins, installation of the circuit board is facilitated, meanwhile, the bottom space of the circuit board is enlarged, and the heat dissipation speed in the machine body is increased.

The invention discloses a rotatable disinfection and sterilization shoe cabinet. The shoe cabinet comprises a shoe cabinet body, a bottom cabinet is arranged at the bottom of the shoe cabinet body, and a shoe cabinet port is formed in the outer wall of one side of the shoe cabinet body; cabinet doors are arranged on the inner walls of the two sides of the shoe cabinet port; a first partition plateis arranged at the tops of the cabinet doors, a control panel is arranged on the surface of the top of the first partition plate, and drawers are arranged at the two sides of the control panel; a fixing plate is arranged at the inner bottom of the shoe cabinet body, a rotation shaft penetrates through the middle of the fixing plate, and the bottom of the rotation shaft penetrates through the shoecabinet body and the bottom cabinet in sequence and is connected with a driving motor of the inner bottom of the bottom cabinet. The rotatable disinfection and sterilization shoe cabinet has the advantages that the effect of sterilizing and purifying air in the shoe cabinet can be achieved, moisture in the shoe cabinet can also be removed and dried, the air in the shoe cabinet keeps a dried state, and shoes are prevented from being wetted.

The invention discloses a method for preparing cyclohexanol and cyclohexanone based on a multi-layer guide cylinder bubbling reactor. The method comprises the following steps: in a multi-layer guide cylinder bubbling reactor, oxidizing cyclohexane with an oxygen-containing gas to generate a cyclohexyl hydroperoxide-containing oxidation liquid, extracting an oxidation liquid with a strong base solution so as to obtain a cyclohexyl hydroperoxide-containing alkali water phase and a cyclohexane organic phase, performing a decomposition reaction on the cyclohexyl hydroperoxide-containing alkali water phase in the presence of a high-melting point solvent, performing sedimentation separation on a decomposition liquid, distilling the cyclohexane organic phase so as to obtain a mixture of cyclohexanol and cyclohexanone, and feeding back the extracted cyclohexane solution to the cyclohexane oxidation reaction process. By adopting the method, the oxidation selectivity and the reaction efficiencyof the cyclohexane can be greatly improved, and the cyclohexane distillation energy consumption can be reduced.

The invention belongs to the technical field of textile devices, and particular to a textile cotton thread processing and twisting structure device. The scheme is put forward to overcome the defects that an existing stranded silk thread is prone to being accumulated at one position on a winding roller and prone to tying a knot, the air circulating at dead corners of a machine case is slow, and theheat in the machine case cannot be dissipated in time. The textile cotton thread processing and twisting structure device comprises a bottom plate. A machine case is fixedly installed on the top sideof the bottom plate. A rotating shaft is rotationally installed on one side of the machine case. A rotating plate is fixedly installed at one end of the rotating shaft. A plurality of winding rollersare arranged on the side, away from the machine case, of the rotating plate. By means of the textile cotton thread processing and twisting structure device, a cooling fan in the machine case moves upand down and swings back and forth to blow air into the machine case at multiple angles so that the machine case can be more rapidly cooled, a thread penetrates a thread hole and is pushed by a moving rod to move back and forth so that the thread can be evenly wound on the winding rollers instead of being accumulated at a certain position on the winding rollers, and the silk thread is prevented from tying a knot or being wound.

The invention relates to a fresh keeping device for peaches. The fresh keeping device comprises a device body and a refrigerating system, wherein refrigerating pipelines are horizontally arranged in the device body in a stacking manner, a fresh keeping tray is arranged directly over each layer of the refrigerating pipeline in a dismountable manner, and the bottom of each fresh keeping tray is matched with the corresponding refrigerating pipeline; placing grooves are formed in each fresh keeping tray, and at least three supporting feet are arranged on the inner side surface of each placing groove; and an output end of the refrigerating system communicates with inlet ends of the refrigerating pipelines. The fresh keeping device disclosed by the invention has the beneficial effects that the refrigerating pipelines and the fresh keeping trays are arranged in a matching manner, so that all Nanguo pears uniformly and synchronously reach optimal fresh-keeping temperature, and the temperature is controlled to be accurate; the support feet are arranged, so that the contact area of the placed Nanguo pears and the placing grooves is reduced, the contact area of the Nanguo pears and cold air is enlarged, and the fresh keeping effects are greatly strengthened; and cold air circulation through holes are formed, so that the cold air circulation rate in the device body is further increased, and the fresh keeping effects are further strengthened.

The invention provides a micro-channel heat exchanger and a heat pump system. The micro-channel heat exchanger comprises a first collecting pipe (1), a second collecting pipe (2), rotary connecting assemblies and a flat pipe (3), the first end of the flat pipe (3) communicates with the first collecting pipe (1), the second end of the flat pipe (3) communicates with the second collecting pipe (2),and the first end of the flat pipe (3) can be rotatably connected with the first collecting pipe (1) through the rotary connecting assembly; and the second end of the flat pipe (3) can be rotatably connected with the second collecting pipe (2) through the rotary connecting assembly. According to the micro-channel heat exchanger, a water bridge between the flat pipe and fins can be damaged, condensate water can be rapidly discharged, the circulation rate of air is increased, and the heat exchange efficiency is improved.

The invention discloses a tobacco screen classification device. The device includes a shell body, the bottom of an inner cavity of the shell body is fixedly connected with a first supporting plate, asecond supporting plate and a third supporting plate from left to right in sequence, the upper end of the left side of the inner cavity of the shell body is movably connected with a first vibrating screen through a first rubber plate, the left end of the bottom of the first vibrating screen is fixedly connected with a first vibrating motor, and the right end of the bottom of the first vibrating screen is placed on the top of the first supporting plate. Through arrangement of the vibrating screen, a second vibrating screen and a third vibrating screen the screening holes of which gradually getwider in sequence, and the functions of the first rubber plate, the second rubber plate, the third rubber plate, the first vibrating motor, the second vibrating motor and the third vibrating motor, the demand of people for four-level screening of tobaccos can be met, the screening effect on the tobaccos is effectively improved, and the problem is solved that since the screening effect of existingscreening devices is unsatisfactory, the processing quality of the tobaccos is reduced.

The invention discloses a borrowing method and system of shared books, an electronic device and a storage medium, and the method comprises the steps: a first client receives a book query request sentby a user; The first client queries the book information and the borrowing address information meeting the query condition from the server, generates a query result list based on the book informationand the borrowing address information meeting the query condition, and outputs the query result list; and in response to receiving a borrowing reservation request sent by the user based on the query result list, the first client generates borrowing reservation order information and outputs a prompt message of borrowing reservation success, so that the user borrows the target book from the target borrowing address based on the borrowing reservation order information. The method can save the reading cost of a user, and improves the utilization rate of book resources.

The invention discloses a special aluminum alloy wheel hub for automobiles which is easy to install. A threaded barrel is detachably connected to the front side of the outer wall, and the threaded barrel is set correspondingly to the installation hole. The outer wall of the threaded barrel is connected with a dust cover by threads on both sides, and the side of the dust cover close to the installation hole is fixedly connected with a A dust plug, wherein the end of the dust-proof plug away from the dust-proof cover extends to the inside of the mounting hole, the invention relates to the technical field of wheel hubs. The existing aluminum alloy wheels solve the problems of inconvenient installation, single heat dissipation performance, insufficient closeness with tires, no shock absorption function, inconvenient repair and maintenance, poor durability, and high maintenance cost.

The invention belongs to the technical field of air purification devices, and particularly relates to a fresh air large cabinet machine. The fresh air large cabinet machine comprises a cabinet body and a cabinet door arranged at the front part of the cabinet body, wherein a primary filter, an intermediate filter, a heat exchanger and an efficient filter are arranged in the cabinet body from bottomto top in sequence, an air return opening and a fresh air outlet are formed in the top of the cabinet body, an air inlet and an air outlet are formed in the rear part of the cabinet body, the side edge of the efficient filter is provided with a first air return channel communicating with the air return port, the lower end of the first air return channel communicates with the heat exchanger, the side edge of the heat exchanger is provided with a second air return channel and an air mixing channel which communicates with each other, the air mixing channel is formed in the upper portion of the second air return channel, the upper end of the air mixing channel communicates with the efficient filter, and the second air return channel communicates with the heat exchanger. The fresh air large cabinet machine has various modes and can adjust the optimal fresh air mode according to the indoor environment and requirements of users.

The invention discloses a high-low voltage power transformation cabinet and an electric leakage control system. The high-low voltage power transformation cabinet comprises a cabinet body, a cabinet door is hinged to one side of the cabinet body, a lock cylinder is installed on one side of the cabinet door, a sliding rail is fixedly connected to the side, close to the lock cylinder, of the cabinetdoor, and a first sliding plate is connected to the outer side wall of the sliding rail in a sliding mode; the cabinet door can be normally opened only by sliding a circular blocking piece upwards, meanwhile, when the temperature in the cabinet body is too high, a PLC controls an electromagnetic switch to start a motor, the air circulation rate between the interior of the cabinet body and the outside is increased, the temperature is lowered, and safety is guaranteed. A drying agent convenient to replace is disposed in a hollow transverse plate, the humidity inside the cabinet body can be effectively reduced, the replacement is convenient, the maintenance cost is reduced, when the data inside the cabinet body is abnormal, a worker can monitor the data inside the cabinet body in real time through the electric leakage control system, the worker can maintain the cabinet body at the first time, and meanwhile, a buzzer and an alarm can warn surrounding personnel to prevent the personnel frommistakenly touching the cabinet body.