CN112858409A - Harmful gas detection method in printing process - Google Patents
Harmful gas detection method in printing process Download PDFInfo
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- CN112858409A CN112858409A CN202110074184.6A CN202110074184A CN112858409A CN 112858409 A CN112858409 A CN 112858409A CN 202110074184 A CN202110074184 A CN 202110074184A CN 112858409 A CN112858409 A CN 112858409A
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- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
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Abstract
The invention discloses a method for detecting harmful gas in a printing process, which belongs to the technical field of gas detection, and comprises the following steps: s1, standardized setting is carried out on the waste gas detector by using the gas with standard concentration; s2, performing startup calibration on the waste gas detector, and performing startup operation on the waste gas detector in clean air; s3, setting an exhaust gas detection alarm value by an operator according to different requirements of enterprises; s4, aligning the waste gas detector to the exhaust port for gas detection; s5, after the detection is finished, checking a detection report, a processing method and a record playback function; s6, harmful gas is purified, the scheme can accurately detect generated gas, and the gas can be purified according to the detected gas types, so that the discharged gas is clean gas meeting the standard, and the environment and the human health are protected.
Description
Technical Field
The invention relates to the technical field of gas detection, in particular to a harmful gas detection method in a printing process.
Background
With the development of science and technology and the increase of personalized demands of products, printing equipment is developing towards the direction of intelligent control and green environmental protection, but a large amount of harmful gas is inevitably generated in the production process. At present, the discharge amount of VOCs in the printing industry is second to the petrochemical industry, and is one of important reasons for causing environmental pollution. The VOCs in the printing industry have very complex components, and main pollution components of different printing modes are different, wherein the main components comprise toluene, dimethylbenzene, isopropanol, butanone and the like. Many existing air quality detection devices in the market at present are mainly designed for PM2.5, PM10, humiture, carbon dioxide and the like, detection indexes of the air quality detection devices are completely different from detection indexes of waste gas of printing enterprises, and the existing detection devices of VOCs waste gas in the printing industry are completely absent. In order to promote enterprises to reduce the emission of Volatile Organic Compounds (VOCs), improve VOCs pollution control technology and improve quality of life and ecological environment, the special printing VOCs waste gas detection device is designed, which has great significance for environmental protection and obviously improves the production benefits of the enterprises.
For example, chinese patent publication No. CN108956740A discloses "a portable detector and detection method for VOCs waste gas in the printing industry", which comprises a housing, wherein a main controller, a sensor unit, a battery, a built-in fan, a liquid crystal display control module, a main power key control module, a vibrator, and an alarm unit control module are arranged in the housing, and the sensor unit, the battery, the built-in fan, the liquid crystal display control module, the main power key control module, the vibrator, and the alarm unit control module; the main controller is provided with a memory card; the surface of the shell is provided with an alarm control unit, a liquid crystal display screen, a function key and a main power key; the alarm unit is connected with the alarm unit control module; the liquid crystal display screen is connected with the liquid crystal display control module; the main power key is connected with the key input module; the function keys are connected with the key input module; air inlet and outlet holes are also arranged on the front and rear side walls of the shell. The detector can quickly detect the discharge components and the discharge concentration of VOCs generated in the printing and packaging production process. The invention also discloses a method for detecting VOCs waste gas by using the VOCs waste gas detector in the portable printing industry.
However, in the technical scheme, the gas is simply detected and is not treated, and some harmful gases polluting the air are directly discharged into the air, so that certain threat is brought to the air quality, and the personal health of workers is harmed.
Disclosure of Invention
1. Technical problem to be solved
Aiming at the problems in the prior art, the invention aims to provide a harmful gas detection method in a printing process, which not only can accurately detect the generated gas, but also can respectively purify the gas according to the detected gas types, so that the discharged gas is clean gas meeting the standard, and the environment and the human health are protected.
2. Technical scheme
In order to solve the above problems, the present invention adopts the following technical solutions.
A harmful gas detection method in a printing process comprises the following steps:
s1, standardized setting is carried out on the waste gas detector by using the gas with standard concentration;
s2, performing startup calibration on the waste gas detector, and performing startup operation on the waste gas detector in clean air;
s3, setting an exhaust gas detection alarm value by an operator according to different requirements of enterprises;
s4, aligning the waste gas detector to the exhaust port for gas detection;
s5, after the detection is finished, checking a detection report, a processing method and a record playback function;
and S6, purifying the harmful gas.
This scheme not only can detect the gas accuracy of production, can carry out purification treatment to gas respectively according to the gaseous kind that detects moreover for the gaseous clean gas that accords with the standard of emission, environmental protection and health.
Further, waste gas detector includes the detector casing, detector casing upper end is connected with the upper cover, detector casing side is opened and is dug there is a pair of through-hole, and is a pair of peg graft respectively in the through-hole and have outlet duct and intake pipe, the one end that the detector casing was kept away from to outlet duct and intake pipe all is filled up with sealed lid, detector casing inside wall is opened and is dug there are a plurality of hemisphere type grooves, be connected with chemical sensor in the hemisphere type groove, it is a plurality of chemical sensor constitutes sensor unit, detector casing bottom is connected with gas purifier and main control unit, the upper cover upper end is connected with a plurality of alarm unit, the upper cover side is connected with liquid crystal display, alarm unit, gas purifier, liquid crystal display and main control unit electric connection.
Furthermore, the upper cover is connected to the upper end of the detector shell in a clamped mode, a sealing ring is connected between the detector shell and the upper cover, the sealing effect is good, and accidental air leakage is not prone to occurring.
Furthermore, the air outlet pipe and the air inlet pipe are connected in the through hole in a sliding mode, and the parts, located at the through hole, of the air outlet pipe and the air inlet pipe are fixedly sleeved with the soft silica gel sleeve in a sleeved mode, so that the sealing effect is good, and the phenomenon of accidental air leakage is not prone to occurring.
Further, a terminal surface of the sealing cover close to the detector shell is connected with a magnet, the detector shell is made of stainless steel, when the detector shell is idle, the sealing cover can be covered, the air outlet pipe and the air inlet pipe are pushed inwards, and the magnet on the sealing cover is tightly attracted with the detector shell made of stainless steel, so that the air outlet pipe and the air inlet pipe are not prone to shaking.
Further, detector casing surface coating has anticorrosive coating, and anticorrosive coating is red, and when anticorrosive coating drops partially, the contrast of colour is more obvious, and the staff of being convenient for in time discovers.
Furthermore, the surface of the shell of the detector is coated with the fluorescent coating, and the fluorescent coating is positioned on the inner side of the anticorrosive coating, so that when the anticorrosive coating is locally peeled off, a worker can conveniently find the anticorrosive coating in time, and the anticorrosive coating can be easily found even under the condition of insufficient light.
Furthermore, the alarm unit is provided with triple alarms, namely a light alarm, a buzzing alarm and a vibration alarm, and the alarm effect is enhanced by combining the multiple alarms.
Further, triple warning includes low alarm value, high alarm value, limit concentration alarm value and safe concentration alarm value, and light warning corresponds yellow, orange, red and blue respectively, and the staff of being convenient for judges the inside relevant gas concentration condition through warning light.
Furthermore, the waste gas detector can be remotely controlled by using a special remote controller, so that remote control is facilitated.
3. Advantageous effects
Compared with the prior art, the invention has the advantages that:
(1) this scheme not only can detect the gas accuracy of production, can carry out purification treatment to gas respectively according to the gaseous kind that detects moreover for the gaseous clean gas that accords with the standard of emission, environmental protection and health.
(2) The upper cover joint is connected in detector casing upper end, and is connected with the sealing washer between detector casing and the upper cover, and is sealed effectual, is difficult for taking place unexpected gas leakage phenomenon.
(3) The air outlet pipe and the air inlet pipe are both connected in the through hole in a sliding mode, and the parts, located at the through hole, of the air outlet pipe and the air inlet pipe are fixedly sleeved with the soft silica gel sleeve in a sleeved mode, so that the sealing effect is good, and the phenomenon of accidental air leakage is not prone to occurring.
(4) One end face of the sealing cover, which is close to the detector shell, is connected with a magnet, the detector shell is made of stainless steel, when the detector shell is idle, the sealing cover can be covered, the air outlet pipe and the air inlet pipe are pushed inwards, and the magnet on the sealing cover is tightly attracted with the detector shell made of stainless steel, so that the air outlet pipe and the air inlet pipe are not easy to shake.
(5) The detector shell surface coats and has the anticorrosive coating, and anticorrosive coating is red, and when anticorrosive coating drops partially, the contrast of colour is more obvious, and detector shell surface coats and has the fluorescent coating, and the fluorescent coating is located anticorrosive coating inboard, and when anticorrosive coating drops partially, the staff of being convenient for in time discovers, even can also discover easily under the condition of light is not enough.
(6) The alarm unit is provided with triple alarms, namely a light alarm, a buzzing alarm and a vibration alarm, the multiple alarms are combined to enhance the alarm effect, the triple alarms comprise a low alarm value, a high alarm value, a limit concentration alarm value and a safety concentration alarm value, the light alarms correspond to yellow, orange, red and blue respectively, and a worker can judge the concentration condition of the related gas inside through alarm light conveniently.
Drawings
FIG. 1 is a flow chart of the steps of the detection method of the present invention;
FIG. 2 is a perspective view of the exhaust gas detector of the present invention;
FIG. 3 is a perspective view of the exhaust gas detecting apparatus of the present invention with the upper cover opened;
fig. 4 is a schematic top view of the exhaust gas detecting apparatus according to the present invention in a state where the upper cover is opened.
The reference numbers in the figures illustrate:
the device comprises a detector shell 1, an upper cover 2, an alarm unit 3, an air outlet pipe 4, an air inlet pipe 5, a sealing cover 6, a hemispherical groove 7, a chemical sensor 8, a gas purifier 9, a liquid crystal display screen 10 and a main controller 11.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention; it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are to be construed broadly, e.g., "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example 1:
a harmful gas detection method in a printing process comprises the following steps:
s1, the waste gas detector is set in a standardized manner by using gas with standard concentration, the detector is connected with the gas with known concentration standard in a sealed state, the main controller 11 starts to operate after the detector is started, analog current signals generated by a plurality of independent electrochemical sensors in the sensor unit are used as baselines in the process, the signals are transmitted to the main controller 11 through a circuit, the signals are finally displayed on the liquid crystal display screen 10 after being processed and transmitted on the main controller 11, and after the real-time concentration of the detector is stable and is the same as the known concentration, instruction recording data are sent to the main controller 11, and a standard curve is obtained and stored in a storage module of the waste gas detector;
s2, performing start-up calibration on the waste gas detector, performing start-up operation on the waste gas detector in clean air, in the process, sending an instruction to the main controller 11 by using a special remote controller, continuously introducing gas, starting to acquire a current signal output by the sensor unit by using a single chip microcomputer on the main controller 11, calling a corresponding program by the main controller 11 for processing, starting an automatic zero-resetting function, and outputting a result to the liquid crystal display screen 10 under the control of the main controller 11 after the calibration is finished;
s3, according to different requirements of enterprises, setting an alarm value for waste gas detection, inputting by an operator through a special remote controller, sending an instruction to a single chip microcomputer on a main controller 11 through a signal processing circuit in the waste gas detector, entering a control alarm unit 3 of the waste gas detector, and having triple alarms: the single chip microcomputer respectively calls different programs for processing under the requirement of a control instruction, selects a low alarm value, a high alarm value, a limit concentration alarm value and a safety concentration alarm value, sets the alarm value, controls an indicator lamp to display green through a circuit when the detected concentration is less than the set alarm concentration, controls the indicator lamp to display red and high-decibel buzzing alarm when the detected concentration is higher than the set concentration, and starts a vibration alarm to complete the setting of the corresponding alarm value;
s4, aligning the waste gas detector to the exhaust port for detection, detecting waste gas by the sensor unit, detecting different gases by the sensor unit after the gas to be detected enters the waste gas detector, wherein a plurality of independent electrochemical sensors are ionized to generate analog current output signals, the generated analog current output signals are collected by the singlechip through the signal processing circuit, the collected signals are processed and transmitted by the singlechip, and the obtained signals are stored after the storage module receives the signals sent by the main controller 11;
s5, after the detection is finished, using a special remote controller to check the detection report, the processing method and the record playback function, in the process, converting the current analog signal into a digital signal by an A/D conversion channel arranged in the main controller 11, sending the processed data to the liquid crystal display screen 10 by the singlechip, and controlling the liquid crystal display screen 10 to display the processed data on a screen according to a certain format, wherein the display content in the liquid crystal display screen 10 comprises: the concentration and the pollution degree grade of various detection gases;
and S6, controlling the gas purifier 9 to purify the harmful gas by using a special remote controller.
This scheme not only can detect the gas accuracy of production, can carry out purification treatment to gas respectively according to the gaseous kind that detects moreover for the gaseous clean gas that accords with the standard of emission, environmental protection and health.
The waste gas detector comprises a detector shell 1, an upper cover 2 is connected to the upper end of the detector shell 1, a pair of through holes are formed in the side end of the detector shell 1, an air outlet pipe 4 and an air inlet pipe 5 are respectively inserted into the pair of through holes, a sealing cover 6 is respectively plugged at one end, far away from the detector shell 1, of the air outlet pipe 4 and the air inlet pipe 5, a plurality of hemispherical grooves 7 are formed in the inner side wall of the detector shell 1, chemical sensors 8 are connected into the hemispherical grooves 7, the end faces of the chemical sensors 8 are lower than the inner wall face of the detector shell 1, the inner wall of the detector shell 1 can be conveniently and rapidly cleaned, a sensor unit is formed by the chemical sensors 8, a gas purifier 9 and a main controller 11 are connected to the inner bottom end of the detector shell 1, a plurality of alarm units 3 are connected to, the liquid crystal display screen 10 is electrically connected to the main controller 11.
The upper cover 2 is connected to the upper end of the detector shell 1 in a clamped mode, a sealing ring is connected between the detector shell 1 and the upper cover 2, the sealing effect is good, and accidental air leakage is not prone to occurring.
The air outlet pipe 4 and the air inlet pipe 5 are connected in the through hole in a sliding mode, the air outlet pipe 4 and the air inlet pipe 5 can be pushed into the inner side of the detector shell 1 in an idle state, the occupied area is reduced, the parts, located at the through hole, of the air outlet pipe 4 and the air inlet pipe 5 are fixedly sleeved with the soft silica gel sleeve, the sealing effect is good, and the accidental air leakage phenomenon is not prone to occurring.
A terminal surface that sealed lid 6 is close to detector casing 1 is connected with magnetism and inhales, and detector casing 1 is stainless steel, and when idle, can cover sealed lid 6, inwards promote outlet duct 4 and intake pipe 5, utilizes magnetism on the sealed lid 6 to inhale tightly mutually with stainless steel's detector casing 1 for outlet duct 4 and intake pipe 5 are difficult for rocking.
The surface of the detector shell 1 is coated with the anticorrosive coating which is red, when the anticorrosive coating partially falls off, the contrast of the color is more obvious, and workers can find the anticorrosive coating in time.
The surface of the detector shell 1 is coated with the fluorescent coating, and the fluorescent coating is positioned on the inner side of the anti-corrosion coating, so that when the anti-corrosion coating partially falls off, workers can find the anti-corrosion coating in time, and the anti-corrosion coating can find the anti-corrosion coating easily even under the condition of insufficient light.
The alarm unit 3 is provided with triple alarms, namely a light alarm, a buzzing alarm and a vibration alarm, and the alarm effect is enhanced by combining multiple alarms.
The triple alarms comprise a low alarm value, a high alarm value, a limit concentration alarm value and a safe concentration alarm value, and the light alarms respectively correspond to yellow, orange, red and blue, so that the staff can judge the concentration condition of the related gas inside through the alarm light conveniently.
The waste gas detector can be remotely controlled by using a special remote controller, so that remote control is facilitated.
It should be noted that, this scheme is the improvement made on the basis of comparing the zhuangling, so some the same points are not repeated, and the technical essential in the comparison patent is absolutely not the technical essential in this scheme, and compare in the comparison patent, this scheme not only can accurately detect the gaseous accuracy of production, can carry out purification treatment to gas respectively according to the gaseous kind that detects moreover for the gas that discharges is the clean gas that accords with the standard, environmental protection and human health.
The foregoing is only a preferred embodiment of the present invention; the scope of the invention is not limited thereto. Any person skilled in the art should be able to cover the technical scope of the present invention by equivalent or modified solutions and modifications within the technical scope of the present invention.
Claims (9)
1. A harmful gas detection method in a printing process is characterized by comprising the following steps: the method comprises the following steps:
s1, standardized setting is carried out on the waste gas detector by using the gas with standard concentration;
s2, performing startup calibration on the waste gas detector, and performing startup operation on the waste gas detector in clean air;
s3, setting an exhaust gas detection alarm value by an operator according to different requirements of enterprises;
s4, aligning the waste gas detector to the exhaust port for gas detection;
s5, after the detection is finished, checking a detection report, a processing method and a record playback function;
and S6, purifying the harmful gas.
The waste gas detector comprises a detector shell (1), an upper cover (2) is connected to the upper end of the detector shell (1), a pair of through holes are formed in the side end of the detector shell (1), an air outlet pipe (4) and an air inlet pipe (5) are inserted into the through holes respectively, a sealing cover (6) is plugged at one end, away from the detector shell (1), of the air outlet pipe (4) and the air inlet pipe (5), a plurality of hemispherical grooves (7) are formed in the inner side wall of the detector shell (1), chemical sensors (8) are connected into the hemispherical grooves (7), the chemical sensors (8) form a sensor unit, a gas purifier (9) and a main controller (11) are connected to the inner bottom end of the detector shell (1), a plurality of alarm units (3) are connected to the upper end of the upper cover (2), and a liquid crystal display (10) is connected to the side end of the, the alarm unit (3), the gas purifier (9), the liquid crystal display screen (10) and the main controller (11) are electrically connected.
2. The method for detecting harmful gases in a printing process according to claim 1, wherein: the upper cover (2) is clamped at the upper end of the detector shell (1), and a sealing ring is connected between the detector shell (1) and the upper cover (2).
3. The method for detecting harmful gases in a printing process according to claim 1, wherein: the air outlet pipe (4) and the air inlet pipe (5) are connected in the through hole in a sliding mode, and the parts, located at the through hole, of the air outlet pipe (4) and the air inlet pipe (5) are fixedly sleeved with soft silica gel sleeves.
4. The method for detecting harmful gases in a printing process according to claim 1, wherein: one end face, close to the detector shell (1), of the sealing cover (6) is connected with a magnet, and the detector shell (1) is made of stainless steel.
5. The method for detecting harmful gases in a printing process according to claim 4, wherein: the surface of the detector shell (1) is coated with an anti-corrosion coating which is red.
6. The method for detecting harmful gases in a printing process according to claim 5, wherein: the surface of the detector shell (1) is coated with a fluorescent coating, and the fluorescent coating is located on the inner side of the anti-corrosion coating.
7. The method for detecting harmful gases in a printing process according to claim 1, wherein: and the alarm (10) is provided with triple alarms, namely a light alarm, a buzzing alarm and a vibration alarm.
8. The method for detecting harmful gases in a printing process according to claim 7, wherein: the triple alarms comprise a low alarm value, a high alarm value, a limit concentration alarm value and a safe concentration alarm value, and the light alarms respectively correspond to yellow, orange, red and blue.
9. The method for detecting harmful gases in a printing process according to claim 1, wherein: the exhaust gas detector may be remotely controlled using a dedicated remote controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110074184.6A CN112858409A (en) | 2021-01-20 | 2021-01-20 | Harmful gas detection method in printing process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110074184.6A CN112858409A (en) | 2021-01-20 | 2021-01-20 | Harmful gas detection method in printing process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112858409A true CN112858409A (en) | 2021-05-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110074184.6A Withdrawn CN112858409A (en) | 2021-01-20 | 2021-01-20 | Harmful gas detection method in printing process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112858409A (en) |
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2021
- 2021-01-20 CN CN202110074184.6A patent/CN112858409A/en not_active Withdrawn
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Application publication date: 20210528 |