CN113693591A - 502 fuming cabinet with full-automatic evaporation and fuming isolation - Google Patents

Abstract

The invention discloses a 502 fuming cabinet with full-automatic evaporation and fuming isolation, which comprises a cabinet body, an electrical control system, a heating system, a humidifying system, a vacuum system and an air purifying system, wherein the cabinet body is provided with a heating system and a heating system; the cabinet body comprises a cabinet shell and two hollow cavities, namely a fuming chamber and an evaporating chamber; the fuming chamber is communicated with the evaporation chamber, and a stop valve is arranged at the communication position; the fuming chamber and the evaporating chamber are both provided with an illuminating lamp and an observation door which can be opened and closed, and the observation doors are respectively provided with a transparent observation window; the fuming chamber is also provided with a movable sample rack; the invention also discloses a 502 fuming method, which is used for fuming handprints by using the 502 fuming cabinet with full-automatic evaporation and fuming isolation. The fuming cabinet of the invention fills 502 steam into the fuming chamber for many times and then independently vacuumizes, thus greatly improving the concentration and purity of 502 steam and leading the fuming effect to be more ideal; and a plurality of systems are controlled in order by arranging the PLC and the touch screen, so that the automation and the humanization are improved.

Description

502 fuming cabinet with full-automatic evaporation and fuming isolation

Technical Field

The invention belongs to the technical field of court science, and particularly relates to a 502 fuming cabinet with full-automatic evaporation and fuming isolation.

Background

The 502 fumigation cabinet is characterized in that under the environment conditions of certain vacuum, temperature and humidity, molecules of 502 glue (ethyl cyanoacrylate) are comprehensively and uniformly volatilized and infiltrated into the inner sides of folded objects, crumpled objects, leather objects, sticky objects, balls and the like, and substances such as water, amino acid, anions and the like in fingerprint sweat initiate rapid polymerization to generate a milky polymer. Thus, the handprints on the inner side of the objects can be directly smoked and extracted without unfolding.

The most important factor influencing the fingerprint display effect is the conditions of the fingerprint sample, including the deposition amount, the leaving time, the dry and wet conditions and the like of biological residual substances on a test material, common sample objects can be displayed without additional treatment, the display effect is not ideal, the temperature and the humidity can be controlled through vacuum fuming equipment, the concentration and the purity of the 502 glue evaporation gas can be improved, the incidence rate of the polymerization reaction of the fingerprint and 502 gas molecules can be improved, and the display effect can be improved.

However, the existing 502 fumigation equipment is only provided with one cavity no matter made in China or imported, and the material to be tested and the 502 evaporation equipment are arranged in the same space and directly subjected to rough vacuum pumping operation, so that the vacuum fumigation is realized. However, in actual operation, a lot of air remains in the cavity, and during fuming, the air in the cavity is actually a mixture of a large amount of air and 502 steam, so that the concentration and purity of the 502 steam are affected, and further the fuming effect of the handprints is affected; and during the vacuumizing, the air pressure condition in the fuming cabinet is invisible, the vacuum degree before fuming cannot be directly known, and the fuming result is not controllable.

Disclosure of Invention

In view of this, the present invention is expected to provide a 502 fuming cabinet with full-automatic evaporation and fuming isolation, which gradually reduces the air content in the fuming chamber by repeatedly filling 502 steam and vacuumizing the fuming chamber for many times, improves the concentration and purity of 502 steam in the fuming chamber, and makes the fuming effect of the fingerprint more ideal; simultaneously, PLC and touch-sensitive screen's application, the orderly cooperation operation of a plurality of systems makes the use of fumigating and showing the cabinet more automatic and humanized. In order to achieve the purpose, the technical scheme of the invention is realized as follows:

a502 fuming cabinet with full-automatic evaporation and fuming isolation comprises a cabinet body, an electrical control system, a heating system, a humidifying system, a vacuum system and an air purifying system;

the cabinet body comprises a cabinet shell and two hollow cavities, namely a fuming chamber and an evaporating chamber; the fuming chamber is communicated with the evaporation chamber, and a stop valve is arranged at the communication position; the fuming chamber and the evaporating chamber are both provided with an illuminating lamp and an observation door which can be opened and closed, and the observation doors are respectively provided with a transparent observation window; the fuming chamber is also provided with a movable sample rack;

the humidifying system, the vacuum system and the air purifying system are arranged in the cabinet shell; the heating system is positioned at the bottom of the evaporation chamber; the heating system, the humidifying system, the vacuum system and the air purifying system are respectively and electrically connected with the electric control system; the humidifying system and the vacuum system are communicated with the fuming chamber; the air purification system is communicated with the fuming chamber and the evaporation chamber.

Furthermore, the electrical control system comprises a PLC, a temperature and humidity sensor, a pressure sensor, a touch screen, a switching power supply and an indicator light; the PLC is arranged in the cabinet shell and also comprises an input module and an output module; the two hollow cavities are provided with temperature and humidity sensors and pressure sensors; the temperature and humidity sensor and the pressure sensor are electrically connected with the input module; the heating system, the humidifying system, the vacuum system and the air purifying system are electrically connected with the output module; the touch screen, the power switch and the indicator lamp are arranged on the surface of the cabinet shell and are electrically connected with the PLC.

Here, the touch screen is electrically connected to the PLC, and bidirectionally transfers information. On one hand, the touch screen is provided with a corresponding induction control area, the PLC is controlled in a inching manner, so that the heating system, the humidifying system, the vacuum system and the air purification system are regulated and controlled, the heating, humidifying, pressurizing, vacuumizing, air purification and other operations of the fuming space are automatically or manually realized, and the multiple systems are orderly matched, cooperatively operated, simple and convenient, and more automatic and humanized; on the other hand, the PLC collects feedback signals of the temperature and humidity sensor and the pressure sensor, determines the temperature and humidity and the pressure state in the fuming cabinet and displays the temperature and humidity and the pressure state on the touch screen in real time, and when the temperature, the humidity and the air pressure are abnormal, the touch screen prompts errors.

In addition, if the PLC is electrically connected with an alarm device such as a buzzer, the touch screen prompts errors and controls the alarm device to alarm. Here, the buzzer is of the type SFM-27.

Further, the heating system comprises a heating device which is a heating wire or an electric furnace; the heating device is further provided with an open heating pan for holding 502 the glue for heating thereof by the heating device.

Further, humidification system includes humidifier and pipeline, the humidifier is smoked apparent the room through pipeline UNICOM to realize the humidification function in smoked space.

Further, the vacuum system comprises a vacuum pump, a pipeline, a stop valve and an air compensating valve; the vacuum pump is communicated with the fuming chamber through a pipeline; a stop valve is arranged on one side of the pipeline connected with the vacuum pump; and an air supply valve is arranged at one side of the pipeline connecting the fuming chamber.

When the fumigation chamber and the evaporation chamber are vacuumized, the two stop valves can be opened, the aeration valve is closed, and the fumigation chamber and the evaporation chamber are vacuumized simultaneously; also can close the stop valve between fuming chamber and the evaporating chamber, close the gulp valve, open the stop valve of one side of the vacuum pump, to fuming the independent evacuation of room.

During the tonifying qi, close the stop valve that links to each other with the vacuum pump, open the stop valve in the middle of fuming room and the evaporating chamber, open the gulp valve and supply the air, make the interior atmospheric pressure of fuming cabinet cavity keep unanimous with external atmospheric pressure, conveniently carry out air purification at the back, also make things convenient for to open the observation door smoothly after air purification and take out and examine the material.

Further, the air purification system comprises an air purifier and a pipeline; the air purifier is respectively communicated with the fuming chamber and the evaporating chamber through pipelines; the air purifier is further provided with a filter element and an axial flow fan, the axial flow fan is located in the evaporation chamber, residual gas in the cavity is sucked by the axial flow fan, the residual 502 steam is removed through filter element purification, and then the fuming cabinet is discharged, so that the health and safety of operators are guaranteed, and the environment is protected.

Furthermore, the illuminating lamps are respectively arranged in the fuming chamber and the evaporating chamber in multiple angles, so that full illumination is realized; the observation doors are respectively arranged on the front sides of the fuming chamber and the evaporating chamber, and the observation windows are made of transparent organic glass or toughened glass or quartz glass; the observation door is connected with the cabinet shell through a door lock in an opening and closing manner, and when the door lock is locked, the cavity is sealed; the touch screen, the power switch and the indicator lamp are arranged on the front surface of the cabinet body; the cabinet shell is made of high-strength formed aluminum alloy or stainless steel.

Furthermore, the two hollow cavities are arranged up and down in the cabinet shell.

Here, the two hollow cavities, i.e., the fuming chamber and the evaporating chamber, may be disposed up and down, or may be disposed left and right.

The invention also provides a 502 fumigation method, which uses the 502 fumigation cabinet with the full-automatic evaporation and fumigation isolation, and the method comprises the following steps:

1) preparation work: switching on a fumigation cabinet power supply, setting fumigation temperature, humidity and pressure values through a touch screen, adding 502 glue into an evaporation chamber, and placing a detection material into a fumigation chamber;

here, the 502 glue cannot be directly applied to the heating means of the evaporation chamber, and is contained in a corresponding container, such as a heating dish or an aluminum foil, and then the container is placed on the heating means. The addition amount of the 502 glue depends on the size of the fuming cabinet, 502 steam amount required by fuming fingerprints of fuming cabinets with different sizes is different, and heating time required is naturally different;

2) simultaneously vacuumizing: opening a stop valve to communicate the evaporation chamber with the fuming chamber, simultaneously vacuumizing the two hollow cavities, and closing the stop valve after vacuumizing;

3) and (3) evaporation: starting a heating system of the evaporation chamber, and evaporating 502 glue;

4) and (3) independently vacuumizing: observing that the pressure in the evaporation chamber reaches a preset value through a touch screen, opening a stop valve between the evaporation chamber and the fuming chamber to allow 502 steam in the evaporation chamber to enter the fuming chamber, closing the stop valve between the evaporation chamber and the fuming chamber, independently vacuumizing the fuming chamber, and repeating the step for 2 to 3 times;

before the stop valve is opened, a certain amount of air remains in the fuming chamber, 502 steam enters the fuming chamber and is uniformly mixed with the residual air after the stop valve is opened, the residual air in the fuming chamber is a mixture of the air and the 502 steam after the stop valve is opened, the mixed air is pumped out (including partial air) after the stop valve is opened again, and the like, the air in the fuming chamber is reduced a little after the 502 steam is supplemented to the fuming chamber and is vacuumized independently every time, so that after the stop valve is vacuumized for many times, the residual air in the fuming chamber is the purer 502 steam, and a better fuming result can be obtained during fuming;

5) fumigating and displaying: opening a stop valve between the evaporation chamber and the fuming chamber, automatically regulating and controlling 502 steam temperature, humidity and pressure by the PLC, closing the stop valve for fuming after a preset value is reached, and observing the fuming effect through an observation window;

here, the PLC automatically controls the start and stop of the internal devices such as the heating device and the humidifier according to signals acquired by the temperature and humidity sensor and the pressure sensor. For example, the temperature and humidity sensor detects the humidity in the cavity of the fuming cabinet and determines whether to start the humidifying function, and if the humidity does not accord with the set value, the PLC starts the humidifier to humidify to the set value;

6) purifying: after fuming is finished, opening a stop valve to communicate the fuming chamber and the evaporating chamber, opening an air supply valve to supply air, starting an air purification system, and purifying residual 502 steam in the fuming chamber and the evaporating chamber;

7) the results are recorded: and opening an observation door of the fuming chamber, taking out the material to be detected, and photographing to record the fuming result.

Further, the method further comprises:

adding 5-10 g of 502 glue into an evaporation chamber in the step 1);

simultaneously vacuumizing the two hollow cavities in the step 2) for 5-10 min;

step 3), starting a heating system of an evaporation chamber for 5-10 min, and evaporating 502 glue;

and 4) independently vacuumizing the fuming chamber for 1-2 min every time, and repeating the step for 2-3 times.

It should be noted that the above-mentioned "vacuuming" does not strictly limit the fuming chamber to have no air residue at all, but means that after multiple times of independent vacuuming, the fuming chamber has very little air residue, and the concentration and content purity of 502 steam are higher, which greatly facilitates the polymerization reaction between the fingerprint substance and 502 steam, thereby obtaining better 502 fuming effect.

The invention has the following beneficial effects: 1) according to the fuming cabinet, the fuming chamber is filled with 502 steam for multiple times and then is independently vacuumized, so that the air content in fuming gas is gradually reduced, the concentration and the purity of the 502 steam in the fuming chamber are improved, and the fuming effect of fingerprints is more ideal; 2) according to the fuming and displaying cabinet, the PLC and the touch screen are arranged, information is transmitted in a two-way mode, the working state of the fuming and displaying cabinet is clear at a glance, the heating, humidifying, pressurizing, vacuumizing, air purifying and other operations of a fuming and displaying space can be automatically or manually realized according to set requirements, and the multiple systems are orderly matched, so that the fuming and displaying cabinet is simple and convenient, and is more automatic and humanized.

Drawings

FIG. 1 is a schematic diagram of a front view of a 502 fuming cabinet with full-automatic evaporation and fuming isolation according to an embodiment of the invention;

FIG. 2 is a schematic diagram of a reverse structure of a 502 fuming cabinet with full-automatic evaporation and fuming isolation according to an embodiment of the invention;

FIG. 3 is a schematic block diagram of a connection of a 502 fuming cabinet with full-automatic evaporation and fuming isolation according to an embodiment of the invention.

Wherein, 1 is a cabinet body, 2 is a fuming chamber, 3 is an observation window, 4 is a door lock, 5 is a lighting lamp, 6 is a temperature and humidity sensor, 7 is an evaporation chamber, 8 is a heating system, 9 is a touch screen, 10 is a power switch, 11 is an indicator lamp, 12 is a humidifier, 13 is a vacuum pump, 14 is a PLC, and 15 is an air purifier.

Detailed Description

So that the manner in which the features and aspects of the present invention can be understood in detail, a more particular description of the invention, briefly summarized above, may be had by reference to embodiments, some of which are illustrated in the appended drawings.

Fig. 1 and fig. 2 are schematic diagrams of front and back structures of a 502 fuming cabinet with full-automatic evaporation and fuming isolation according to an embodiment of the present invention, respectively, as shown in fig. 1 and fig. 2, a 502 fuming cabinet with full-automatic evaporation and fuming isolation comprises a cabinet body 1, a PLC14, a heating system 8, a humidifier 12, a vacuum pump 13 and an air purifier 15;

the cabinet body 1 comprises a cabinet shell and two hollow cavities, the cabinet shell is made of stainless steel, the two hollow cavities are arranged up and down, the fumigation chamber 2 is arranged above the cabinet shell, and the evaporation chamber 7 is arranged below the cabinet shell; the fuming chamber 2 is communicated with the evaporation chamber 7, and a stop valve is arranged at the communication position; the heating system 8 is positioned at the bottom of the evaporation chamber 7;

the fuming chamber 2 and the evaporating chamber 7 are respectively provided with a temperature and humidity sensor 6, a pressure sensor, a lighting lamp 5 and an openable observation door, the observation door is respectively provided with a transparent observation window 3 and a door lock 4, the diameter of the observation window is 250cm, the evaporation condition of 502 glue in the evaporating chamber 7 and the fuming condition in the fuming chamber 2 can be conveniently observed, and the door lock 4 is used for fixing the observation door and a cabinet shell so as to facilitate the vacuumizing and fuming work of a sealed cavity; the illuminating lamps 5 are circular illuminating sight glasses with the diameter of 100cm, are respectively arranged above, below and on the rear side of the interior of the two cavities, and illuminate the fuming shell in all directions.

The fuming chamber 2 is also provided with a movable sample rack, a material to be fuming is placed on the sample rack, so that the material can contact 502 steam to the maximum extent to fully generate polymerization reaction, and the position of the sample rack can be adjusted according to actual conditions so as to clearly observe the fuming process; here, a movable hanger is also applicable.

The surface of the cabinet body 1 is also provided with a touch screen 9, a power switch 10 and an indicator light 11.

Further, in this embodiment, the size of the fuming cabinet body is 900 × 860 × 1320(cm), the input power supply is 220V, and the vacuum pressure is-0.093 MPa;

the PLC14 is arranged in the cabinet shell and also comprises an input module and an output module, wherein the model is DVP-ES, the number of input points is 8 (the module can be increased), the number of output points is 8 (the module can be increased), the power supply is 24V, and the interface 232;

the heating system 8 is an electric heating wire, a power supply 220V, a model HSJRG and a heating power 600w are input, a heating dish is arranged above the electric heating wire, and 502 glue liquid is contained in the heating dish;

the humidifier 12 is LG-03A in model and has the power of 400W;

the vacuum pump 13 is XD-40 in model, and the input power supply is 220V;

the air cleaner 15 is tubular, (5 inches Φ 102 x 38mm, chuck 50.5 mm);

the model of the touch screen is KGT07, and the parameters are as follows: 7 inches, resolution 800 × 600, memory 256+256(M), interface USB +232, power supply 24V. The USB interface can record working conditions and fuming parameters through the USB flash disk, and can be connected with a computer through the network communication interface to control fuming and adjust the fuming parameters.

Further, the heating system 8, the humidifier 12, the vacuum pump 13 and the air purifier 15 are respectively electrically connected with the PLC 14; the temperature and humidity sensor and the pressure sensor are electrically connected with the input module; the heating system 8, the humidifier 12, the vacuum pump 13 and the air purifier 15 are electrically connected with the output module; the touch screen 9, the power switch 10 and the indicator light 11 are arranged on the surface of the cabinet shell and electrically connected with the PLC 14.

Here, the touch panel 9 is electrically connected to the PLC14 to transmit information bidirectionally. On one hand, the touch screen 9 is provided with a corresponding induction control area for inching the PLC14, so that the heating system 8, the humidifier 12, the vacuum pump 13 and the air purifier 15 are regulated and controlled, and the heating, humidifying, pressurizing, vacuumizing, air purifying and other operations of the fuming space are automatically or manually realized, so that multiple systems are orderly matched, cooperatively operated, simple and convenient, and more automatic and humanized; on the other hand, the PLC14 collects feedback signals of the temperature and humidity sensor and the pressure sensor, determines the temperature, humidity and pressure state in the fumigation cabinet and displays the temperature, humidity and pressure state on the touch screen 9 in real time, and when the temperature, humidity and air pressure are abnormal, the touch screen prompts an error.

Here, the temperature and humidity sensor model is DHT22, and the pressure sensor model is SLDYB-2088.

In addition, if the PLC is electrically connected with an alarm device such as a buzzer, the touch screen prompts errors and controls the alarm device to alarm. Here, the buzzer is of the type SFM-27.

FIG. 3 is a schematic block diagram of a connection of a 502 fuming cabinet with full-automatic evaporation and fuming isolation according to an embodiment of the present invention, as shown in FIG. 3, the fuming chamber is communicated with an evaporation chamber pipeline, a stop valve is arranged in the middle, and the fuming chamber and the evaporation chamber are communicated or isolated by opening and closing the stop valve;

the humidifier is communicated with the fuming chamber through a pipeline so as to realize the humidifying function of the fuming space;

the vacuum pump is communicated with the fuming chamber, a stop valve is arranged on a pipeline on one side of the vacuum pump, and an air compensating valve is arranged on a pipeline on one side of the fuming chamber;

when the fumigation chamber is vacuumized, the two stop valves can be completely opened, the aeration valve is closed, and the fumigation chamber and the evaporation chamber are simultaneously vacuumized; also can close the stop valve between fuming chamber and the evaporating chamber, close the gulp valve, open the stop valve of one side of the vacuum pump, to fuming the independent evacuation of room.

During the tonifying qi, close the stop valve of vacuum pump one side, open the stop valve in the middle of fuming room and evaporating chamber, open the gulp valve and supply the air, make the interior atmospheric pressure of fuming cabinet cavity keep unanimous with external atmospheric pressure, conveniently carry out air purification at the back, also make things convenient for to open the observation door smoothly after air purification and take out and examine the material.

The air purifier is respectively communicated with the fuming chamber and the evaporating chamber through pipelines; the air purifier is also provided with a filter element and an axial flow fan, wherein the axial flow fan is positioned in the evaporation chamber and has the model of HZ-150; residual gas in the axial fan suction cavity is purified by the filter element to remove residual 502 steam and then discharged out of the fumigation cabinet, so that the health and safety of operators are guaranteed, and the environment is protected.

The pipeline in the above embodiment is made of stainless steel, and the pipe diameter is 20/32/57(mm), which can be replaced and adjusted according to the actual use condition.

The illuminating lamps are respectively arranged in the fuming chamber and the evaporating chamber in multiple angles, so that sufficient illumination is realized; the observation doors are respectively arranged on the front sides of the fuming chamber and the evaporating chamber, and the observation windows are made of transparent organic glass or toughened glass or quartz glass; the observation door is connected with the cabinet shell through the opening and closing of the door lock, and when the door lock is locked, the cavity is sealed.

The application method of the 502 fuming cabinet with the full-automatic evaporation and fuming isolation in the embodiment is as follows:

1) preparation work: switching on a fumigation cabinet power supply, setting fumigation temperature, humidity and pressure values through a touch screen 9, adding 5-10 g of 502 glue into a heating dish, and putting a detection material into a fumigation chamber 2;

the fumigation program can be preset by using a touch screen and stored, and for the materials to be detected with the same temperature, humidity and pressure conditions required by fumigation, the corresponding prestored program is selected to be operated, and the following steps are directly executed; the addition amount of the 502 glue depends on the size of the fuming cabinet, the 502 steam amount required by fuming fingerprints of fuming cabinets with different sizes is different, and the required heating time is naturally different.

2) Simultaneously vacuumizing: opening a stop valve, communicating the evaporation chamber 7 with the fuming chamber 2, vacuumizing the two hollow cavities for 5-10 min at the same time, properly prolonging or shortening vacuumizing time according to real-time pressure displayed on the touch screen 9 until the vacuum degree meets the requirement, and closing the stop valve;

3) and (3) evaporation: starting a heating system of the evaporation chamber 7 for 85-10 min, evaporating 502 glue, observing 502 evaporation conditions through the observation window 3 while heating, and observing an air pressure value through the display screen 9;

4) and (3) independently vacuumizing: observe the evaporation chamber 7 internal pressure through touch-sensitive screen 9 and reach the default, open the stop valve between evaporation chamber 7 and the fuming chamber 2, let 502 steam in the evaporation chamber 7 get into the fuming chamber 2, close the stop valve between evaporation chamber 7 and the fuming chamber 2, to 2 independent evacuation 1 ~ 2min of fuming chamber, repeat this step 2 to 3 times, if 502 steam purity requirement is higher when showing fuming, can suitably increase independent evacuation number of times in this step.

Here, before opening the stop valve, there is a certain amount of air residue in the fuming chamber 2, after opening the stop valve, 502 steam gets into fuming chamber 2 and remains the air homogeneous mixing, after the independent evacuation, residual gas is air and 502 steam mixture in the fuming chamber 2, after the evacuation once more, the mixed gas is taken out (wherein contains partial air), so on, after replenishing 502 steam and the independent evacuation to fuming chamber 2 at every turn, the air in the fuming chamber 2 will reduce some, so after the evacuation many times, remaining in the fuming chamber 2 is comparatively pure 502 steam, just can obtain better fuming result during the fuming.

5) Fumigating and displaying: opening a stop valve between the evaporation chamber 7 and the fuming chamber 2, automatically regulating 502 steam temperature, humidity and pressure by the PLC, closing the stop valve for fuming after a preset value is reached, and observing the fuming effect through the observation window 3;

here, the PLC automatically controls the start and stop of the internal devices such as the heating wire and the humidifier according to signals collected by the temperature and humidity sensor and the pressure sensor. For example, the temperature and humidity sensor detects the humidity in the fumigation cabinet cavity and determines whether to start the humidification function, and if the humidity does not accord with the set value, the PLC starts the humidifier to humidify to the set value.

6) Purifying: after fuming is finished, opening a stop valve to communicate the fuming chamber 2 and the evaporating chamber 7, opening an air supply valve to supply air, starting an air purification system 15, and purifying residual 502 steam in the fuming chamber 2 and the evaporating chamber 7; here, the user can set the fumigation cabinet to automatically enter the air-replenishing purification program after the fumigation step is finished.

7) The results are recorded: and opening an observation door of the fuming chamber 2, taking out the material to be detected, and photographing to record the fuming result.

It should be noted that the above-mentioned "vacuuming" does not strictly limit the fuming chamber to have no air residue at all, but means that after multiple times of independent vacuuming, the fuming chamber has very little air residue, and the concentration and content purity of 502 steam are higher, which greatly facilitates the polymerization reaction between the fingerprint substance and 502 steam, thereby obtaining better 502 fuming effect.

The fumigation cabinet fills 502 steam into the fumigation chamber for multiple times and then independently vacuumizes the fumigation chamber, so that the air content in the fumigation chamber is gradually reduced, the concentration and the purity of the 502 steam in the fumigation chamber are improved, and the fumigation effect of the handprints is more ideal; simultaneously, PLC and touch-sensitive screen's application, the orderly cooperation operation of a plurality of systems makes the use of fumigating and showing the cabinet more automatic and humanized.

The specific type of the above-mentioned devices is not limited and detailed, and the deep connection mode of the above-mentioned devices is not detailed, and can be understood by those skilled in the art as the common general knowledge.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, and any modifications, equivalents, improvements, etc. that are within the spirit and principle of the present invention should be included in the present invention.

Claims (10)

1. A502 fuming cabinet with full-automatic evaporation and fuming isolation is characterized by comprising a cabinet body, an electrical control system, a heating system, a humidifying system, a vacuum system and an air purifying system;

the cabinet body comprises a cabinet shell and two hollow cavities, namely a fuming chamber and an evaporating chamber; the fuming chamber is communicated with the evaporation chamber, and a stop valve is arranged at the communication position; the fuming chamber and the evaporating chamber are both provided with an illuminating lamp and an observation door which can be opened and closed, and the observation doors are respectively provided with a transparent observation window; the fuming chamber is also provided with a movable sample rack;

the humidifying system, the vacuum system and the air purifying system are arranged in the cabinet shell; the heating system is positioned at the bottom of the evaporation chamber; the heating system, the humidifying system, the vacuum system and the air purifying system are respectively and electrically connected with the electric control system; the humidifying system and the vacuum system are communicated with the fuming chamber; the air purification system is communicated with the fuming chamber and the evaporation chamber.

2. The isolated 502 fumigation cabinet of claim 1, wherein said electrical control system comprises a PLC, a temperature and humidity sensor, a pressure sensor, a touch screen, a switching power supply, an indicator light; the PLC is arranged in the cabinet shell and also comprises an input module and an output module; the two hollow cavities are provided with temperature and humidity sensors and pressure sensors; the temperature and humidity sensor and the pressure sensor are electrically connected with the input module; the heating system, the humidifying system, the vacuum system and the air purifying system are electrically connected with the output module; the touch screen, the power switch and the indicator lamp are arranged on the surface of the cabinet shell and are electrically connected with the PLC.

3. The fully automatic evaporation and fuming isolated 502 fuming cabinet as recited in claim 1, wherein said heating system comprises a heating device, said heating device being a heating wire or an electric furnace; the heating device is also provided with an open type heating dish.

4. The isolated 502 fumigation cabinet of claim 1, wherein said humidification system comprises a humidifier and tubing, said humidifier in communication with the fumigation chamber via tubing.

5. The fully automatic evaporation and fuming isolated 502 fuming cabinet as recited in claim 1, wherein said vacuum system comprises a vacuum pump, piping, shut-off valves, and aeration valves; the vacuum pump is communicated with the fuming chamber through a pipeline; a stop valve is arranged on one side of the pipeline connected with the vacuum pump; and an air supply valve is arranged at one side of the pipeline connecting the fuming chamber.

6. The fully automatic evaporation and fuming isolated 502 fuming cabinet as recited in claim 1, wherein said air purification system comprises an air purifier, a pipeline; the air purifier is respectively communicated with the fuming chamber and the evaporating chamber through pipelines; the air purifier is also provided with a filter element and an axial flow fan, and the axial flow fan is positioned in the evaporation chamber.

7. The isolated 502 fumigation cabinet of claim 1, wherein said lighting lamps are disposed inside the fumigation chamber and the evaporation chamber; the observation doors are respectively arranged on the front sides of the fuming chamber and the evaporating chamber, and the observation windows are made of transparent organic glass or toughened glass or quartz glass; the observation door is connected with the cabinet shell through the opening and closing of a door lock; the touch screen, the power switch and the indicator lamp are arranged on the front surface of the cabinet body; the cabinet shell is made of high-strength formed aluminum alloy or stainless steel.

8. The fully automatic evaporation and fumigation isolated 502 fumigation cabinet of claim 1, wherein said two hollow cavities are located one above the other within the cabinet housing.

9. A 502 fumigation method using the fully automatic evaporation and fumigation isolated 502 fumigation cabinet of any one of claims 2 to 8, said method comprising the steps of:

1) preparation work: switching on a fumigation cabinet power supply, setting fumigation temperature, humidity and pressure values through a touch screen, adding 502 glue into an evaporation chamber, and placing a detection material into a fumigation chamber;

2) simultaneously vacuumizing: opening a stop valve to communicate the evaporation chamber with the fuming chamber, simultaneously vacuumizing the two hollow cavities, and closing the stop valve after vacuumizing;

3) and (3) evaporation: starting a heating system of the evaporation chamber, and evaporating 502 glue;

4) and (3) independently vacuumizing: observing that the pressure in the evaporation chamber reaches a preset value through a touch screen, opening a stop valve between the evaporation chamber and the fuming chamber to allow 502 steam in the evaporation chamber to enter the fuming chamber, closing the stop valve between the evaporation chamber and the fuming chamber, independently vacuumizing the fuming chamber, and repeating the step for 2 to 3 times;

5) fumigating and displaying: opening a stop valve between the evaporation chamber and the fuming chamber, automatically regulating and controlling 502 steam temperature, humidity and pressure by the PLC, closing the stop valve for fuming after a preset value is reached, and observing the fuming effect through an observation window;

6) purifying: after fuming is finished, opening a stop valve to communicate the fuming chamber and the evaporating chamber, opening an air supply valve to supply air, starting an air purification system, and purifying residual 502 steam in the fuming chamber and the evaporating chamber;

7) the results are recorded: and opening an observation door of the fuming chamber, taking out the material to be detected, and photographing to record the fuming result.

10. The method of claim 9, wherein the method further comprises:

adding 5-10 g of 502 glue into an evaporation chamber in the step 1);

simultaneously vacuumizing the two hollow cavities in the step 2) for 5-10 min;

step 3), starting a heating system of an evaporation chamber for 5-10 min, and evaporating 502 glue;

and 4) independently vacuumizing the fuming chamber for 1-2 min every time, and repeating the step for 2-3 times.

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