168 results about "Steam sterilizers" patented technology

The invention discloses a high-temperature steam sterilizer, which relates to the technical field of sterilization equipment, and has the technical key points that the high-temperature steam sterilizer comprises a base and a tank body fixedly mounted on the base, a steam generation mechanism is arranged at the top of the base, a steam distribution mechanism is arranged in an inner cavity of the tank body, and a sealed storage mechanism is arranged at the top of the tank body; the steam distribution mechanism comprises a preheating assembly and a steam equipartition assembly, and the preheating assembly comprises a heat conduction cylinder fixedly installed at the bottom of an inner cavity of the tank body. The problem of local sterilization failure caused by non-uniform steam distribution of a traditional sterilizer is solved, agricultural products are rapidly penetrated through by increasing the steam flow speed and the diffusion range, sterilization dead angles are avoided, the steam flow path is reasonably controlled, energy waste is reduced, and sterilization uniformity and economical efficiency are remarkably improved.

The utility model discloses a pulsating vacuum pressure steam sterilizer which comprises a cabinet body, and a sterilizing chamber is arranged on the inner wall of the cabinet body. According to the pulsating vacuum pressure steam sterilizer, through the arrangement of the cabinet body, the sterilization chamber, the cavity, the steam inlet pipe, the slope and the first electromagnetic valve, when the pulsating vacuum pressure steam sterilizer is specifically used, preheated steam is firstly discharged into the cavity of the cabinet body through the steam inlet pipe to preheat the sterilization chamber, and at the moment, the first electromagnetic valve is in a closed state; preheated steam enters the cavity and then is in contact with the inner wall of the cavity, water drops are generated due to temperature difference, the water drops flow into the groove through the slope to support the floating ball, at the moment, the generated water drops can be discharged through the water leakage groove, the sterilization chamber is preheated through the preheated steam, the first electromagnetic valve is opened after preheating, and the steam enters the sterilization chamber through the input pipe; the defect that the steam sterilization effect is reduced due to the fact that the steam is condensed into water and is adhered to an appliance needing to be sterilized due to the temperature difference between the steam and the sterilization chamber when the steam enters the sterilization chamber can be overcome.

The invention discloses a steam sterilizer based on deep reinforcement learning and an intelligent control system, and belongs to the technical field of automatic control. In the intelligent control system, a first subtracter generates a sequence first error signal according to an actually measured temperature provided by a temperature sensor and a set temperature; the second subtracter generates a sequence second error signal according to the actually measured air pressure provided by the pressure sensor and the saturated air pressure of the water vapor determined by the set temperature; the deep reinforcement learning module generates a first state according to the sequence first error signal, generates a second state according to the sequence second error signal, and generates control strategies of the first PID controller and the second PID controller according to the first state and the second state; generating a control strategy of the electronic change-over switch according to the second error signal; the first PID controller controls the working state of the steam generator; and the second PID controller selects the electric control air inlet valve or the first electric control exhaust valve through the electronic change-over switch. Saturated steam can be ensured to participate in sterilization, and the sterilization effect is good.

The utility model discloses a high-pressure steam sterilizer which comprises a sterilizer main body, a support frame is fixedly assembled at the bottom of the sterilizer main body, a sterilization cavity is formed in the sterilizer main body, a heater is fixedly assembled at the bottom of the sterilization cavity, an annular clamping block is fixedly assembled on the side wall of an inner cavity of the sterilization cavity, and a storage barrel is clamped in the annular clamping block. A storage tray is assembled in the storage barrel, a positioning mechanism is assembled between the storage barrel and the storage tray, and a cover body is detachably and fixedly assembled at the top of the sterilizer main body. According to the disinfection device, the storage tray with the height position capable of being adjusted is arranged in the storage cylinder, and the storage tray and the storage cylinder are clamped and fixed through the positioning mechanism, so that the storage space in the storage cylinder can be adjusted, and to-be-disinfected appliances with different sizes can be conveniently placed; by means of the device, the storage space of instruments in the storage cylinder can be effectively changed according to the use requirements, more experiment instruments can be placed in the one-time disinfection process, and the disinfection number of the instruments is increased.

There is provided a UV steam sterilizer including, a main body provided to generate steam by heating water, and a to-be-sterilized-article container having a space containing the to-be-sterilized-article to be sterilized by the steam and detachably placed on the main body. In addition, the UV steam sterilizer includes, a heating plate, heating the water contained in a water containing groove, installed at the bottom of the water containing groove provided on the upper surface of the main body in a form of being concave downward, a water level sensor installed on a sidewall of the water containing groove to detect the lowest water level of the water contained in the water containing groove, a steam heater built in the main body to control to heat the heating plate during operation and to stop when the water level sensor detects the lowest water level, and a UV irradiation unit installed on the heating plate to irradiate ultraviolet rays to residual water remaining in the water containing groove while maintaining the lowest water level as the water level, and controlled to irradiate the ultraviolet rays after the steam heater stops.

This invention relates to the field of temperature sensor technology and discloses a steam outlet temperature detection device for a steam sterilizer. The invention includes a detection cover assembly, which presents different states depending on the operating conditions. When the detection cover assembly is in a moving state, its lower opening expands, allowing for rapid replacement of the internal steam. When the detection cover assembly is in the detection area, it is in a closed state, effectively eliminating external interference. In addition to the conventional detection of steam in the steam outlet pipe by the temperature sensor, the detection cover assembly periodically covers part of the steam, forming a sealed space for the temperature sensor to perform sealed temperature measurement, effectively avoiding interference from steam-water mixing in the pipe. Simultaneously, when the temperature sensor probe passes through the wiping assembly, the wiping assembly wipes the temperature sensor probe, improving temperature measurement accuracy.

The invention relates to the technical field of biomedical sterilization, and discloses a biomedical engineering-based vertical pressure steam sterilizer, which comprises a sterilizer main body, a sterilization chamber is vertically arranged in the sterilizer main body, support arms are symmetrically and vertically arranged on the two sides of the sterilizer main body, a top seat is welded on the upper ends of the two groups of support arms, and the top seat is welded on the sterilization chamber. A lifting air cylinder is vertically installed in the middle of the upper end face of the top base, a lifting rod is movably arranged in the lifting air cylinder and penetrates through the top base downwards, and an outer cover base is welded to the lower end of the lifting rod. The corresponding pressed inclined blocks are extruded through the extrusion faces, the telescopic columns are caused to do inward linear motion, the oil plugs extrude sealing oil in the hydraulic oil cavities, the sealing oil is injected into the annular sealing oil bags through the oil pipes, and the multiple sets of hydraulic regulators evenly inject oil into the annular sealing oil bags from different positions; the contact acting force between the annular sealing oil bag and the inner wall of the sterilization chamber is enhanced, and the sealing performance of the container is obviously improved.

1. The name of this design product: Pre-vacuum pressure steam sterilizer. 2. Purpose of the product with this design: The product with this design is suitable for disinfection and sterilization equipment. 3. The key point of the design of this product lies in its shape. 4. The picture or photo that best illustrates the design points: three-dimensional picture.

The present disclosure sets forth an automated peritoneal dialysis (“PD”) system, which enables the re-use of certain disposable components. The APD system includes a sterilization source, such as a steamer or a UV radiation light source that sterilizes a disposable filter. During therapy, the disposable filter is connected to a PD fluid line and to a patient's catheter. Post-therapy, the disposable filter is disconnected from the patient's catheter, but remains connected to the PD fluid line, and the disposable filter undergoes steam or UV radiation sterilization.

The present application relates to the technical field of steam sterilizers, and discloses a travel switch and a steam sterilizer. It includes a bracket; a first microswitch and a second microswitch; a trigger structure; and a moving structure connected to the trigger structure, the moving structure being liftable and installed on the bracket, the moving structure being used to contact the door body and drive the trigger structure to move; wherein the trigger structure includes a low stage for triggering the first microswitch, and a high stage for triggering the second microswitch, and the lowest end of the high stage is higher than the lowest end of the low stage. The travel switch of the present application can send different signals according to the stroke of the trigger structure, so that the travel switch can cooperate with the usage scenario and meet the different usage requirements of the equipment at different stroke positions. The present application also discloses a steam sterilizer.

The utility model discloses a steam sterilizer with a detachable inner container for cleaning, which comprises a base, the inner container and a heating element, and the base is provided with a placing groove with a top opening; the inner container is separably placed in the placing groove; a water storage cavity is formed in the inner container; the heating element is arranged in the containing groove or at the bottom of the inner container. When the heating element is arranged in the base containing groove and the inner container is placed in the containing groove, the heating element abuts against the bottom of the inner container to achieve heat transfer. When the heating element is arranged at the bottom of the inner container and the inner container is placed in the placing groove, the inner container is electrically connected with the base so as to supply power to the heating element. Therefore, the heating element is arranged in the placing groove of the base and is separated from the inner container, or the heating element is arranged at the bottom of the inner container and the inner container is detachably and electrically connected with the base, so that the inner container can be detachably arranged on the base, the inner container can be conveniently detached for cleaning, the cleaning is more thorough, and the practicability is high. Therefore, the problems of stain residue and the like are avoided.

The utility model discloses a horizontal pulsation vacuum sterilizer, and particularly relates to the technical field of steam sterilizers, the horizontal pulsation vacuum sterilizer comprises a support base and a sterilizer body arranged on the support base, and further comprises a placing plate, a wiping ring, a telescopic assembly and a moving assembly, the placing plate can deflect and can be moved out of the sterilizer body, the placing plate is arranged in the sterilizer body, and the wiping ring is arranged in the placing plate. The telescopic assembly is arranged on the periphery of the placing plate and is used for realizing the back-and-forth movement of the wiping ring along the length direction of the sterilizer body; when the inside of the sterilizer body is cleaned, the first connecting part and the second connecting part can be butted by utilizing the moving component, and then the connecting rod is driven to rotate by utilizing the second motor, so that the lead screw nut seat moves outside the lead screw, and the wiping ring moves back and forth; therefore, water drops or dust on the inner wall of the sterilizer body can be wiped, the cleaning requirement of the sterilizer can be quickly met, and a large amount of preparation time and labor cost can be saved.

The utility model belongs to the field of steam sterilization devices, and particularly relates to a sterilization shelf for a pressure steam sterilizer, which comprises a sterilization shelf plate and a shelf body, the shelf body is used for placing the sterilization shelf plate, the sterilization shelf plate comprises a water accumulation layer and a drainage layer, and one side of the drainage layer opposite to the ground is contacted with articles. The side, facing the ground, of the drainage layer is connected with the water accumulation layer, openings are formed in the drainage layer and comprise the first opening and the second opening, the first opening is formed in the side, making contact with objects, of the drainage layer, the second opening is formed in the side, facing the water accumulation layer, of the drainage layer, and the water accumulation layer is used for collecting dripping water drops. The drainage layer guides water drops on the outer wall of the article to the water accumulation layer through the opening. By means of the matching relation of the first opening and the second opening, the contact area between the drainage layer and an object is kept to be reduced, wet bags are reduced, and water drops are kept to be discharged in the drying process.

The utility model discloses a steam generation device of a steam disinfection cabinet, which comprises a water tank main body, a plurality of heating pipes are arranged at the lower part in the water tank main body, and two ends of each heating pipe are fixed on the inner side walls of the lower parts of a left side plate and a right side plate of the water tank main body; a top plate of the water tank main body is communicated with a plurality of vertical pipes which vertically extend upwards, the top ends of the vertical pipes are fixedly provided with the same top connecting plate, a plurality of steam outlet through holes are formed in the top connecting plate, and each steam outlet through hole is communicated with the corresponding vertical pipe; the outer protective cover body is arranged outside all the vertical pipes, meanwhile, it is guaranteed that the temperature in the outer protective cover body rises, the outer space makes contact with the outer protective cover body, condensed water drops of external air cannot enter the outer protective cover body, the water drops are not likely to adhere to the internal vertical pipes, and the service life of the vertical pipes is guaranteed.

The invention relates to the technical field of medical instruments, and discloses a medical waste sterilization device which comprises a shell, a grinding assembly and a sorting assembly. The crushing assembly is used for crushing the medical wastes; the sorting assembly comprises a first conveying belt, a second conveying belt, a buoyancy screening assembly and a power assembly, the first conveying belt is used for transporting the crushed waste materials, and the second conveying belt is used for attracting and transporting the magnetic metal waste materials on the first conveying belt; the buoyancy screening assembly is used for transporting the remaining waste with the density smaller than that of water into the microwave sterilizer and transporting the waste with the density larger than that of water into the steam sterilizer. By means of the device, instruments made of metal and nonmetal in a mixed mode can be pulverized, metal and nonmetal separation is facilitated, metal waste and nonmetal waste can be put into the steam sterilizer and the microwave sterilizer respectively to be sterilized, sterilization of the nonmetal waste is accelerated, and meanwhile, the metal waste and the nonmetal waste can be recycled. And the influence of metal wastes on microwave sterilization can be reduced.

The present invention discloses a steam sterilizer and working method for the sterilization of novel coronavirus nucleic acid detection, which belongs to the technical field of disinfection and sterilization equipment. The bottom of the steam sterilizer body is connected to the normally closed drain valve, the chloride ion sensor and the automatic drain joint in sequence through a water quality filter. A pressure sensor and a temperature sensor are also provided inside the steam sterilizer body, and a safety valve is connected to the top. During operation, the main heater is heated up for three pulsating heatings, and exhaust is performed once after each pulsating heating; after the drainage time of the normally closed drain valve is reached, it is judged whether to open the normally closed drain valve for the second time according to the water quality information. If the water quality concentration is less than the specified value, the steam sterilizer ends its operation. If the water quality concentration is greater than the specified value, the normally closed drain valve is reopened, and the above steps are repeated until the water quality concentration is less than the specified value, and the steam sterilizer ends its operation.

The invention relates to a vertical high-pressure steam sterilizer, and belongs to the technical field of medical sterilization equipment. The sterilizer adopts a vertical three-layer integrated structure and comprises a device chamber, a disinfection chamber and a heating chamber, a micro air pump array is arranged in the disinfection chamber to actively suck steam, condensate water is shaken off through a vibration mechanism, and rapid, uniform and efficient high-pressure steam sterilization is realized by combining ultraviolet laser pre-disinfection and inclined flow channel drainage and pollution discharge design; the device is suitable for medical instruments and laboratory utensils.

The utility model provides a steam sterilizing pot with high blow-drying efficiency, which relates to the technical field of steam sterilizing pots and comprises a machine body, a base capable of producing steam and hot air and an air duct component. A fixing frame is arranged on the base; the machine body is detachably fixed on the base; when the machine body is fixed on the base, the machine body covers the steam and hot air outlet of the base to form a closed cavity; the fixing frame is located in the closed containing cavity. The air duct assembly is fixed on the base; the air duct assembly is hermetically communicated with the hot air outlet of the base; a plurality of air outlets are formed in the air duct assembly; a plurality of raised nozzles are arranged on the fixing frame; each protruding nozzle is communicated with one air outlet in a sealed mode. A plurality of steam through holes are formed in the fixing frame; and the steam outlet on the base is arranged below the fixing frame. The steam sterilizing pot with high blow-drying efficiency solves the problem of low blow-drying efficiency of the milk bottle caused by unbalanced blow-drying speed of the bottle body and the nipple of the milk bottle, and can reduce the time required for sterilizing the milk bottle.

1. Name of the designed product: pressure steam sterilizer (simple type Foster N+). 2. Use of the designed product: used for disinfecting and sterilizing medical instruments, laboratory instruments and other articles. 3. Design points of the designed product: in shape. 4. Picture or photo best indicating the design points: perspective view 1.

A medical apparatus comprising a chamber inside of which a fan is provided, and a motor-to- fan adapter assembly, wherein the motor-to-fan adapter assembly comprises a housing, a central rotatable shaft extending inside the housing, and a first sealing element. The central rotatable shaft comprises a proximal motor-receiving end portion, a distal fan-receiving end portion, and an intermediate elongated body portion. The first sealing element is configured to be provided around and in circumferential contact with the intermediate elongated body portion of the central rotatable shaft. A second sealing element is configured to be located proximally of the first sealing element, and is deformable in such manner that steam that leaks past the first sealing element in an assembled state of the adapter assembly in the medical apparatus, causes the second sealing element to increase its pressure against the central rotatable shaft. Also disclosed is a steam sterilizer motor-to-fan adapter assembly.

The application discloses a steam sterilizer with a steam recycling function, relates to the technical field of steam sterilization, and comprises a steam generator and a metal frame. The steam generator is connected with a booster assembly at an air outlet end. A filter screen four is fixedly connected to the bottom of the inner cavity of the metal frame. A rotating frame is rotatably installed on the outer side of the steam generator. A heat insulation box is rotatably installed on the outer side of the rotating frame. A flow splitting assembly is arranged between the heat insulation box and the booster assembly. After high-temperature sterilization of instruments in a high-temperature cavity, steam is split into two medium-temperature cavities. The steam with a temperature that cannot reach sterilization and disinfection effect preheats the sterilization and disinfection instruments entering the first medium-temperature cavity. After the sterilization and disinfection instruments are sterilized and disinfected by high-temperature steam in the high-temperature cavity, the sterilization and disinfection instruments enter the low-temperature cavity after a period of time in the second medium-temperature cavity. The steam after heat exchange is recycled, and the sterilization and disinfection instruments are prolonged in the temperature rising and falling cycle.

The application provides a time point selection method for a critical point of a sterilization period of a pressure steam sterilizer, and comprises the following steps: signal acquisition, intercepting an optimal data processing area for judging the sterilization period in an original signal to obtain a to-be-processed signal, performing smoothing processing on the to-be-processed signal to obtain temperature data after smoothing processing, determining training data and target data of a point selection method, signal fitting, and point selection. The time point selection method for the critical point of the sterilization period of the pressure steam sterilizer has the multiple advantages and beneficial effects of high automation degree, high precision, wide applicability, improved work efficiency, and reduced cost.

The utility model relates to the technical field of steam sterilization, and discloses a vertical pressure steam sterilizer which comprises a sterilizing box, the bottom of the sterilizing box is fixedly connected with a protective box, the inner wall of the bottom end of the protective box is fixedly connected with a motor, the driving end of the motor is fixedly connected with a rotating disc, an adjusting assembly is arranged outside the rotating disc, and the rotating disc is fixedly connected with the protective box. A connecting column is rotatably connected to the inner wall of the bottom end of the disinfection box, a rotating plate is fixedly connected to the exterior of the connecting column, a disinfection frame is fixedly connected to the top of the connecting column, and a mounting assembly is arranged in the disinfection frame. According to the utility model, the intermittent rotation of the disinfection frame enables materials placed on the disinfection frame to change positions continuously, and steam can be in uniform contact with each part of the materials, so that the sterilization effect is effectively improved, the sterilizer can adapt to articles to be sterilized with different numbers and different heights, and the universality and the practicability of the equipment are improved.

This utility model discloses a vertical pressure steam sterilizer, including a body and a filter box located on one side of the body. The filter box contains clean water, and a filter assembly is connected to the body. The filter assembly includes an S-shaped flow channel fixed inside the filter box. Addressing the problems of short gas-water surface contact time and insufficient particulate matter absorption in existing technologies, this novel vertical pressure steam sterilizer features a unique S-shaped flow channel structure. After sterilization, the steam discharged from the body enters the S-shaped flow channel inside the filter box through the inlet pipe. The steam meanders within the S-shaped flow channel, significantly increasing the contact path and time between the gas and the water surface. Simultaneously, the double-sloped blocks fixed to the top and side walls of the S-shaped flow channel allow larger particulate impurities in the steam more time to contact the water due to inertia and gradually settle into the water, thus increasing the absorption of particulate matter.

To provide a steam sterilizer capable of reducing a magnitude of sound generated when steam is exhausted from a high pressure chamber.SOLUTION: The steam sterilizer according to the present invention includes a chamber 10 capable of accommodating an object to be sterilized, a heater for heating a liquid, a liquid storage tank 20, a drain pipe, a first on-off valve 44, an exhaust pipe 42, a second on-off valve 45, a common pipe 43, and a control unit. The control unit is configured such that, after sterilizing the object to be sterilized, it opens the first on-off valve to start discharging the liquid through the drain pipe, and then opens the second on-off valve to start discharging gas through the exhaust pipe. The drain pipe has a first portion 411 connecting the chamber and the first on-off valve, and a second portion 412 connecting the first on-off valve and the common pipe, the second portion being formed longer than the shortest distance between the first on-off valve and the common pipe.SELECTED DRAWING: Figure 1

To provide a steam sterilizer capable of efficiently cooling a heater, after a sterilization treatment came to an end and a method thereof.SOLUTION: The steam sterilizer according to the present invention comprises a chamber for accommodating the objects to be sterilized, the chamber having a gas inlet and outlet, a heater for heating the liquid supplied into the chamber, a temperature sensor for detecting the temperature inside the chamber, an air supply mechanism for supplying gas into the chamber through the inlet, and a control unit for controlling the operation of the heater and the air supply device. The control unit operates the air supply mechanism and performs a ventilation process, in which gas is supplied into the chamber through the inlet and gas inside the chamber is discharged outside through the outlet, when the temperature detected by the temperature sensor is equal to or higher than a predetermined temperature before the heater is activated to heat the liquid.SELECTED DRAWING: Figure 14

A compressed air preheating device for a sealing door groove of a pulsating vacuum steam sterilizer comprises a compressed air preheating assembly used for preheating compressed air and a clamping sleeve arranged on the outer side of a sterilizing chamber of the pulsating vacuum steam sterilizer in a sleeving mode, and an opening facilitating insertion and installation of the pulsating vacuum steam sterilizer is formed in the clamping sleeve. A jacket chuck is mounted at the opening; the compressed air preheating assembly comprises a multi-circle spiral copper pipe used for compressed air circulation and a copper blind plate used for being matched with the jacket chuck, an inlet and an outlet of the multi-circle spiral copper pipe both penetrate through the copper blind plate and are fixedly installed on the copper blind plate, the inlet of the multi-circle spiral copper pipe is externally connected with a compressed air supply pipeline, and the outlet of the multi-circle spiral copper pipe is fixedly connected with the jacket chuck. And an outlet of the multi-circle spiral copper pipe is connected with an air inlet joint on a sealing door groove of the pulsation vacuum steam sterilizer through a connecting copper pipe. According to the utility model, stable high-temperature compressed air can be provided in the operation process of the sterilization equipment, so that the sterilization effect and the sterilization stability can be improved.

The utility model relates to a steam sterilizer for egg tart skin processing, the steam sterilizer for egg tart skin processing comprises a processing chamber, a conveying table, a material separating structure and a feeding structure, the conveying table is obliquely supported and fixed at the inner bottom of the processing chamber, the material separating structure is rotatably mounted at the inner bottom of the processing chamber, and the material conveying structure is rotatably mounted at the inner bottom of the processing chamber. The material separating structure movably penetrates through the adjacent sides of the conveying table, the feeding structure comprises a first rotating shaft, a trigger rod, a deflection rod, a pull rod, a second rotating shaft, a limiting block and a spring, and the lower end of the first rotating shaft and the lower end of the second rotating shaft are rotationally connected with the inner bottom of the treatment chamber. Through cooperative arrangement of the conveying table, the material separating structure and the feeding structure, the egg tart skin can be intermittently conveyed and disinfected and sterilized conveniently and automatically in the process that the bottom support containing the egg tart skin is disinfected through high-temperature steam sprayed out of the steam input part; and moreover, processing personnel can conveniently put in and take out the bottom support containing the egg tart skin.

The utility model discloses a cavity cleaning structure of a pressure steam sterilizer, which is characterized in that a lifting steam output structure is arranged in a sterilization tank, so that when articles are cleaned and sterilized, the height of a steam outlet can be correspondingly adjusted according to requirements, and the steam sterilization is more accurate and targeted. And meanwhile, the shielding mechanism is arranged to selectively shield the steam outlet pipe of the cavity ring, so that other steam sterilization can be more concentrated, and the whole cleaning and sterilizing process is more efficient.

The invention relates to the technical field of sterilization equipment, in particular to a sterilization effect detection system for a steam sterilizer, which is used for solving the problems that the sterilization effect of the steam sterilizer cannot be comprehensively evaluated, comprehensive evaluation cannot be performed by combining physical parameters and biological indexes, and the judgment result cannot be ensured to be scientific and reliable in the prior art. The sterilization effect evaluation module calculates the F0 value and the survival rate of the self-luminous biological indicator to comprehensively evaluate the sterilization effect of the steam sterilizer, the trapezoidal method is adopted to calculate the F0 value, and the corrected real-time luminous intensity and a calibration curve fitted by experimental data are utilized to ensure the data accuracy, so that the accuracy of the steam sterilizer is improved. Physical parameters and biological indexes are combined for comprehensive evaluation, the sterilization effect is divided into unqualified, qualified and excellent grades by presetting scale factor coefficients, rapid judgment and operation guidance are facilitated, and based on a strict mathematical model, it is ensured that the judgment result is scientific and reliable.