CN111838094B - Low-oxygen controlled-atmosphere insecticidal system and low-oxygen controlled-atmosphere insecticidal method - Google Patents
Low-oxygen controlled-atmosphere insecticidal system and low-oxygen controlled-atmosphere insecticidal method Download PDFInfo
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- CN111838094B CN111838094B CN202010828270.7A CN202010828270A CN111838094B CN 111838094 B CN111838094 B CN 111838094B CN 202010828270 A CN202010828270 A CN 202010828270A CN 111838094 B CN111838094 B CN 111838094B
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01M—CATCHING, TRAPPING OR SCARING OF ANIMALS; APPARATUS FOR THE DESTRUCTION OF NOXIOUS ANIMALS OR NOXIOUS PLANTS
- A01M1/00—Stationary means for catching or killing insects
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/30—Against vector-borne diseases, e.g. mosquito-borne, fly-borne, tick-borne or waterborne diseases whose impact is exacerbated by climate change
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- Pest Control & Pesticides (AREA)
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- Insects & Arthropods (AREA)
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Abstract
The invention relates to a low-oxygen controlled atmosphere insecticidal system, which comprises: carrying out airtight enclosure; a nitrogen gas source connected to the gas tight enclosure; an oxygen scavenger disposed in the airtight enclosure configured to transition from a closed state to a vented state; wherein, the nitrogen gas source is in an active oxygen reduction mode, so that the oxygen content in the airtight enclosure is rapidly reduced to 1-5%. Based on the above, the oxygen scavenger is configured to continue to deoxidize the airtight enclosure by switching from the closed state to the ventilation state in a passive deoxidization mode, so that the oxygen content is further reduced to about zero. The invention also relates to a low-oxygen controlled atmosphere insecticidal method.
Description
Technical Field
The invention relates to an insecticidal system, in particular to a low-oxygen controlled atmosphere insecticidal system.
Background
With the increasing maturity of hypoxia controlled-atmosphere insecticidal technology, the hypoxia controlled-atmosphere technology is widely applied to the fields of Chinese herbal medicine protection, cultural relic protection, private collection and the like. With the corresponding laws and regulations issued by the nation, in some fields, such as the traditional Chinese medicine and cultural relic protection industry, the low-oxygen gas-regulating insecticidal technology gradually replaces chemical agent fumigation, physical radiation and the like. The low-oxygen modified atmosphere disinsection is used for disinsection and long-term storage of Chinese herbal medicines, cultural relics, books and the like, and has the characteristics of no toxicity, environmental protection, no residue, simple operation, no drug resistance of pests and the like. However, the hypoxic insecticidal solutions in the prior art are high in energy consumption, long in time, and low in efficiency. This makes the application of modified atmosphere hypoxic insect killing not widespread enough.
Disclosure of Invention
Aiming at the technical problems in the prior art, the invention provides a low-oxygen modified atmosphere insecticidal system, which comprises: carrying out airtight enclosure; a nitrogen gas source connected to the gas tight enclosure; an oxygen scavenger disposed in the airtight enclosure configured to transition from a closed state to a vented state; wherein the nitrogen gas source is in an active oxygen reduction mode, so that the oxygen content in the airtight enclosure is rapidly reduced to 1-5%; on the basis, the oxygen scavenger is configured to continuously reduce oxygen in the airtight enclosure from a closed state to a ventilation state in a passive oxygen reduction mode, so that the oxygen content is further reduced to be below 3%, and preferably, the oxygen content is reduced to 0.1% -1%.
In particular, the hypoxic controlled atmosphere insecticidal system, wherein the oxygen scavenger is placed in a storage box/bag, wherein the storage box/bag is capable of being transformed from a closed state to a ventilated state.
In particular, the oxygen scavenger is configured in an amount such that the oxygen content in the air-tight enclosure is below 3% for a insecticidal cycle.
In particular, the hypoxic controlled atmosphere insecticidal system, wherein the humidity control agent is placed in a storage box/bag, wherein the storage box/bag is capable of being transformed from a closed state to an aerated state.
Further, a humidity control device configured to maintain a humidity in the airtight enclosure at a preset range.
In particular, the oxygen scavenger, the humidity controller and the like can also be jointly placed in the same storage box which can be switched from a closed state to a ventilating state.
In particular, the low-oxygen controlled atmosphere insecticidal system is characterized in that the airtight enclosure is a rigid airtight enclosure or/and a flexible airtight tent or the like.
In particular, the low-oxygen controlled atmosphere insecticidal system is characterized in that the nitrogen gas source is nitrogen making equipment or a nitrogen cylinder.
The invention also relates to a low-oxygen controlled atmosphere insecticidal method, which comprises the following steps: reducing the oxygen content in the airtight enclosure to about 1-5% by using a nitrogen source; opening the oxygen scavenger in the airtight enclosure; and reducing the oxygen content in the airtight enclosure to below 3%, preferably to 0.1-1%.
In particular, the method further comprises: and maintaining an insecticidal cycle under the condition that the oxygen content in the airtight enclosure is less than or equal to 3 percent.
In particular, the method further comprises: monitoring oxygen content and/or humidity in the air tight enclosure; an alarm is issued in response to the oxygen content and/or the rate of change of humidity in the air tight enclosure exceeding a threshold.
In particular, the method further comprises: the nitrogen gas source comprises a humidity control device for adjusting the humidity of the input airtight enclosure nitrogen.
The low-oxygen modified atmosphere insecticidal system adopts active and passive combined oxygen reduction, oxygen content in the airtight enclosure structure is rapidly reduced through active nitrogen filling and oxygen reduction, then an oxygen scavenger is used for passive oxygen reduction, and the low-oxygen state of the airtight enclosure space is maintained for a long time, so that the purpose of low-oxygen insecticidal is achieved. The method is economical and efficient, and is particularly suitable for low-oxygen modified atmosphere insecticidal treatment of batch articles.
Drawings
Preferred embodiments of the present invention will now be described in further detail with reference to the accompanying drawings, in which:
FIG. 1 is a schematic view of a low oxygen controlled atmosphere insecticidal system according to an embodiment of the present invention; and
FIG. 2 is a schematic flow chart of a method for killing insects by modified atmosphere with low oxygen according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
In the following detailed description, reference is made to the accompanying drawings that form a part hereof and in which is shown by way of illustration specific embodiments of the application. In the drawings, like numerals describe substantially similar components throughout the different views. Various specific embodiments of the present application are described in sufficient detail to enable those skilled in the art, having the benefit of this disclosure, to practice the subject application. It is to be understood that other embodiments may be utilized and structural, logical or electrical changes may be made to the embodiments of the present application.
Aiming at the problems in the prior art, the invention provides a technical scheme combining active oxygen reduction by using nitrogen making equipment or a nitrogen cylinder and passive oxygen reduction by using an oxygen scavenger, and solves the problems that the oxygen content is difficult to reduce to below 5% in an active oxygen reduction mode and the oxygen reduction rate is slow; the oxygen content can be quickly reduced to below 3 percent, even 0.1 percent or below by utilizing the oxygen scavenger, and the insecticidal efficiency is greatly improved. The insecticidal cycle of the invention is not limited by time, and can be properly changed according to actual requirements, such as insect species.
The invention provides a low-oxygen controlled atmosphere insecticidal system. Fig. 1 is a schematic structural diagram of a low-oxygen controlled-atmosphere insecticidal system according to an embodiment of the invention. As shown in fig. 1, the insecticidal system comprises: the device comprises an airtight enclosure 101, a nitrogen gas source 102, a detector 103, a deoxygenation device 104 and a humidity control device 105.
The air tight enclosure 101 is a storage device with good air tightness. The air-tight enclosure 101 has at least an air inlet and an air outlet. And a storage box is also arranged in the airtight enclosure 101 and is used for storing deoxidant or humidity control agent and the like. The storage box has good air permeability, and the air inside and outside the storage box can be freely replaced. The airtight enclosure 101 has a cavity with a certain volume inside, and can be used for placing articles needing to be killed. The airtight enclosure 101 may be an airtight rigid structure (e.g., airtight cabinet) or a flexible structure (e.g., airtight bag, airtight tent, etc.). When the flexible structure is selected as the airtight enclosure 101, the material of the airtight tent is polyethylene or PVC high barrier material, if a door is arranged, the airtight tent can be well sealed after being closed, the sealing mode is not limited, an air inlet hole, an air outlet hole and a detection hole are reserved in the airtight tent and are in sealed connection with a pipeline, a valve is arranged on the pipeline, and the holes can be sealed by closing the valve.
The nitrogen gas source 102 is connected with the air inlet of the airtight enclosure 101 in an airtight way. The nitrogen source 102 is configured to introduce nitrogen into the air-tight enclosure 101 to reduce the oxygen content of the air-tight enclosure 101 to about 1% -5%, which is an active oxygen reduction mode. The nitrogen source can be a nitrogen generator or a nitrogen cylinder. The specific amount of oxygen content reduced during the active oxygen reduction process by the nitrogen source depends on the nitrogen source equipment and the specific requirements, in some embodiments, the nitrogen source is sufficient or the nitrogen production purity is high, and the active oxygen reduction process can reduce the oxygen content by a little, for example, 1% to 2%. In some embodiments, the nitrogen production equipment has low nitrogen production purity or insufficient gas quantity, and the oxygen content of the active oxygen reduction process can be higher, for example, 3% to 5%. In some embodiments, the nitrogen source 102 further comprises a humidity control device, which can control the relative humidity of the gas filled into the gas-tight enclosure 101 within a certain range.
The oxygen content detector 103 is configured to detect the oxygen content inside the airtight enclosure, and includes gas production type or diffusion type, in which the gas production type can be inserted into the detection port through a pipeline and extended to the central portion of the airtight enclosure 101, and in which the probe is placed at the center of the airtight enclosure 101. In some embodiments, a temperature and humidity tester is further provided for detecting the temperature and humidity inside the airtight enclosure. Preferably, the oxygen content detector and the temperature and humidity tester have data recording and remote monitoring functions.
The oxygen removal device 104 is disposed within the air tight enclosure 101. The deoxygenator device 104 includes a deoxygenating agent and a storage bin. The oxygen scavenger within the oxygen scavenger device 104 is configured to absorb oxygen to reduce the oxygen content within the air tight enclosure 101 to below 3%, even 0.1% and below, which is a passive oxygen reduction. The storage compartment within the oxygen scavenging device 104 is configured to receive a control signal and to be configured to be in an open or closed state in response to the control signal. In some embodiments, the oxygen scavenger means 104 is turned on when the oxygen content inside the air tight enclosure 101 reaches 5%, and is turned on continuously when the oxygen content is less than 5%. The material of the oxygen scavenger in the oxygen removal device 104 comprises at least an iron-based or vitamin-based type oxygen scavenger. The amount of oxygen scavenger is configured to maintain an oxygen content in the air tight enclosure below 3% for a pesticidal cycle. Preferably, the oxygen content is 0.1-1% for a pesticidal period.
A humidity control device 105 is disposed within the air tight enclosure 101. The humidity control device 105 includes a humidity control agent and a storage box. The humidity control agent within the humidity control device 105 is configured to maintain the humidity within the air-tight enclosure 101 at a particular value. The storage compartment in the humidity control device 105 is configured to receive the control signal in a wired or wireless manner, and is configured to be in an open or closed state in cooperation with the control signal. In some embodiments, the storage compartment of the humidity control device is opened along with the storage compartment of the oxygen removal device. The humidity control agent in the humidity control device 105 is a humidity control agent and/or a desiccant having functions of absorbing moisture and humidifying humidity. The amount of moisture control agent is configured to maintain the humidity in the air tight enclosure at a particular value for at least one insecticidal cycle.
The working process of the low oxygen modified atmosphere insecticidal system of the present invention is further illustrated with reference to fig. 1. In the initial stage, the materials to be stored in the airtight enclosure 101 are placed, and the gas environment inside the airtight enclosure 101 is communicated with the outside. And then, closing the airtight enclosure to isolate the internal gas environment from the outside. And (3) starting the nitrogen gas source 102, introducing nitrogen, observing the oxygen content percentage on the oxygen content detector 103, and closing the nitrogen gas source 102 when the oxygen content reaches 1-5%. And then by remote control, for example: the oxygen removal device 104 and the moisture control device 105 are turned on by remote control. In some embodiments, the oxygen removal device 104 and the humidity control device 105 may be connected to the oxygen content detector 103, and the oxygen removal device 104 and the humidity control device 105 are automatically turned on when the oxygen content reaches 1% to 5%. The oxygen removal device 104 after being turned on will reduce the oxygen content to below 3%. The humidity control device 105 is turned on to maintain the humidity inside the airtight enclosure 101 within a predetermined range.
The equipment for actively reducing oxygen in a specific area by introducing nitrogen to achieve the purpose of killing insects needs a long time to reduce the oxygen content to 3 percent or below. Both the time cost and the material cost are very high. After the oxygen content reaches 1% -5%, the oxygen content in the airtight enclosure is reduced to be below 3%, even 0.1% through the oxygen scavenger, and finally approaches to zero. The deoxidant can quickly play a role in airtight enclosure, and the oxygen reduction time is shortened. And the cost of the deoxidant is lower than that of the nitrogen gas introduced for a longer time or a highly-configured nitrogen making device is selected. According to the scheme disclosed by the invention, the oxygen content of the deoxidant can quickly reach below 3 percent, even below 0.1 percent, the same insecticidal effect can be achieved only for about 2-7 days, and the insecticidal period is greatly shortened. The technology disclosed by the invention can be applied to long-term storage of articles which are easy to damage by worms, such as Chinese herbal medicines, cultural relics, books and the like. The pesticide has the characteristics of no toxicity, environmental protection, no residue, simple operation, no pesticide resistance of pests and the like.
The invention also provides a method for killing insects by modified atmosphere with low oxygen, fig. 2 is a schematic flow chart of the method for killing insects by modified atmosphere with low oxygen according to an embodiment of the invention, as shown in fig. 2, the method comprises:
in step 001, the oxygen content in the airtight enclosure is reduced to 1% -5% by using a nitrogen gas source. And introducing nitrogen into the airtight enclosure to reduce the oxygen content of the airtight enclosure to 1-5%.
At step 002, the oxygen scavenger in the airtight enclosure is opened. The air-tight enclosure contains an oxygen scavenger that can be turned on under certain conditions, such as: and when the oxygen content in the airtight enclosure reaches 1-5% or a remote opening instruction is received. The oxygen scavenger which is opened is contacted with the gas environment in the airtight enclosure and can absorb oxygen in the airtight enclosure.
In step 003, the oxygen content in the air tight enclosure is reduced to less than 3%. Wherein the oxygen content in the air tight enclosure is below 3% for at least one insecticidal cycle. Preferably, the oxygen content in the airtight enclosure is 0.1-1% for at least one insecticidal cycle. The oxygen scavenger is continuously opened, so that the oxygen content in the airtight enclosure can be reduced to be below 3 percent, even close to zero, and the oxygen content can be kept for a long time. In some embodiments, the oxygen scavenger may maintain an oxygen content within the air tight enclosure of zero for about 7 days.
The insecticidal method further comprises the step of maintaining the humidity in the airtight enclosure within a preset range by using an oxygen scavenger. In some embodiments, the oxygen scavenger further comprises a consumable material with a humidity control function, and the oxygen scavenger is started and the humidity in the airtight enclosure can be kept at a specific value.
The insecticidal method of the present invention further comprises monitoring the oxygen content and/or humidity in the air-tight enclosure and issuing an alarm in response to the rate of change of the oxygen content and/or humidity in the air-tight enclosure exceeding a threshold. In some embodiments, the insecticidal method further comprises monitoring the oxygen content and/or humidity in the airtight enclosure, so that the environment inside the airtight enclosure can be known at any time, for example, an oxygen content and temperature and humidity detector can be additionally arranged on the airtight enclosure. In some embodiments, the method of killing insects further comprises issuing an alert when the oxygen content and/or the rate of change of humidity in the air-tight enclosure exceeds a threshold. An alarm device, for example, may be added for use with the aforementioned detector. When the oxygen content or the humidity in the airtight enclosure exceeds a threshold value, the alarm equipment gives an alarm to remind related personnel to process in time.
The invention relates to a low-oxygen modified atmosphere insecticidal method which can quickly reduce the oxygen content in an airtight enclosure from 1-5% to below 3%, even to 0.1% or below. Compared with the traditional method, the insecticidal cycle is greatly reduced. The method can also monitor the gas environment condition in the airtight enclosure in real time and can control the environment in the airtight enclosure in real time. The method of the invention has simple operation and low cost. The technology disclosed by the invention can be applied to long-term storage of articles which are easy to be damaged by worms, such as Chinese herbal medicines, cultural relics, books and the like. The pesticide has the characteristics of no toxicity, environmental protection, no residue, simple operation, no pesticide resistance of pests and the like.
The above embodiments are provided only for illustrating the present invention and not for limiting the present invention, and those skilled in the art can make various changes and modifications without departing from the scope of the present invention, and therefore, all equivalent technical solutions should fall within the scope of the present invention.
Claims (6)
1. A method for killing insects by adjusting the atmosphere at low oxygen, which is based on the system for killing insects by adjusting the atmosphere at low oxygen, the system for killing insects by adjusting the atmosphere at low oxygen comprises:
carrying out airtight enclosure;
a nitrogen gas source connected to the gas tight enclosure;
the deaerator comprises a deaerator and a storage box, wherein the deaerator is arranged in the airtight enclosure, the deaerator is configured to be converted from a closed state to a ventilation state of the deaerator, and the storage box of the deaerator can receive a control signal and is matched with the control signal to be in an opening or closing state;
the humidity control device comprises a dehumidifying agent and a storage box, the humidity control device is arranged in the airtight enclosure, the dehumidifying agent is configured to maintain the humidity in the airtight enclosure within a preset range, and the storage box of the humidity control device can receive a control signal in a wired or wireless mode and is matched with the control signal to be in an opening or closing state;
wherein the nitrogen gas source is in an active oxygen reduction mode, so that the oxygen content in the airtight enclosure is rapidly reduced to 5%; the oxygen scavenger is configured in a passive oxygen reduction mode, the oxygen scavenger is converted from a closed state to a ventilation state, and oxygen is continuously reduced for the airtight enclosure space, so that the oxygen content is reduced to be below 3%;
the hypoxia air-conditioning insecticidal method comprises the following steps: in the initial stage, the material to be subjected to insecticidal storage is placed in an airtight enclosure, and at the moment, the gas environment in the airtight enclosure is communicated with the outside; then closing the airtight enclosure to isolate the internal gas environment from the outside, starting a nitrogen gas source to introduce nitrogen, closing the nitrogen gas source when the oxygen content reaches 5%, and then starting a deoxidization device and a humidity control device through remote control; the oxygen removal device and the humidity control device are connected with the oxygen content detector, and when the oxygen content reaches 5%, the oxygen removal device and the humidity control device are automatically started; the oxygen content of the oxygen removal device after being opened is reduced to be below 3 percent, and the humidity in the airtight enclosure is maintained within a preset range by the moisture control device after being opened.
2. The method of claim 1, wherein the oxygen scavenger is configured to be aerated to maintain an oxygen content of less than 3% in the air-tight enclosure for a insecticidal cycle.
3. The hypoxic gas-conditioned insecticidal method according to claim 1, wherein the airtight enclosure is a rigid airtight enclosure or/and a flexible airtight tent.
4. The method for low-oxygen controlled atmosphere disinfestation of claim 1, wherein the nitrogen gas source is nitrogen making equipment or a nitrogen cylinder.
5. The hypoxic controlled atmosphere insecticidal method of claim 1, further comprising: monitoring oxygen content and/or humidity in the air tight enclosure; an alarm is issued in response to the oxygen content and/or the rate of change of humidity in the air tight enclosure exceeding a threshold.
6. The method for controlled atmosphere disinfestation with low oxygen of claim 1, further comprising: the nitrogen gas source comprises a humidity control device for adjusting the humidity of the input airtight enclosure nitrogen.
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| CN113942981B (en) * | 2021-11-29 | 2023-09-15 | 北京盈丰利泰科贸有限公司 | Combined oxygen removing and regulating device |
| CN114779865B (en) * | 2022-06-22 | 2022-09-13 | 深圳市华图测控系统有限公司 | Control method of low-oxygen gas-conditioning system and low-oxygen gas-conditioning system |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2250887A1 (en) * | 1996-04-03 | 1997-10-09 | Tenneco Packaging Inc. | Modified atmosphere package |
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| CN102871198A (en) * | 2011-07-15 | 2013-01-16 | 湖南华望熏蒸消毒有限公司 | Method for reducing oxygen to kill pests of stored goods |
| CN103287739B (en) * | 2013-06-17 | 2016-01-20 | 王法 | A kind of controlled atmosphere storage procedures |
| CN206043199U (en) * | 2016-08-31 | 2017-03-29 | 天津森罗科技股份有限公司 | A kind of high temperature nitrogen charging controlled atmosphere insecticidal system |
| CN209749544U (en) * | 2018-12-28 | 2019-12-10 | 天津森罗科技股份有限公司 | Vacuum nitrogen-filled insect killing device |
| CN111419021B (en) * | 2020-04-21 | 2023-05-16 | 天津森罗科技股份有限公司 | Low-oxygen constant-humidity storage device and storage method thereof |
| CN111418565A (en) * | 2020-05-07 | 2020-07-17 | 天津森罗科技股份有限公司 | Combined air-conditioning insecticidal system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CA2250887A1 (en) * | 1996-04-03 | 1997-10-09 | Tenneco Packaging Inc. | Modified atmosphere package |
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