CN111418565A - Combined air-conditioning insecticidal system - Google Patents
Combined air-conditioning insecticidal system Download PDFInfo
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- CN111418565A CN111418565A CN202010376798.5A CN202010376798A CN111418565A CN 111418565 A CN111418565 A CN 111418565A CN 202010376798 A CN202010376798 A CN 202010376798A CN 111418565 A CN111418565 A CN 111418565A
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Abstract
The invention relates to a combined air-conditioning insecticidal system, which comprises: carrying out airtight enclosure; a hypoxic device; a carbon dioxide supply device; and a gas distribution device; wherein, the oxygen content in the airtight enclosure is configured to be 0.1-10%, and the carbon dioxide content is configured to be 1.0-20.0%. The combined air-conditioned insecticidal system provided by the invention improves insecticidal efficiency by using low-oxygen air-conditioned auxiliary carbon dioxide, overcomes the technical defects of difficulty in maintaining a low-oxygen environment and the like, and provides an environment-friendly, convenient and efficient insecticidal method.
Description
Technical Field
The invention relates to the field of controlled atmosphere disinsection, in particular to a combined controlled atmosphere disinsection system.
Background
The problem of worm damage of the traditional Chinese medicinal materials in the storage process is common, the cost for fumigating and disinfecting the traditional Chinese medicinal materials by entrusting part of medicine enterprises to a third party organization is high, and the risk of overproof residues is easy to occur; the prescription of Chinese medicinal material warehousing management (SB/T11094-2014) is as follows: the traditional Chinese medicinal materials are not required to be fumigated by aluminum phosphide or sulfur, and the traditional Chinese medicinal materials stored for more than 30 days are cured by controlled atmosphere storage and the like to achieve the aim of killing insects.
At present, the common controlled-atmosphere insecticidal methods include a low-oxygen insecticidal method, a carbon dioxide insecticidal method and the like. By reducing the oxygen content in the environment, the pests are stimulated to breathe, the opening time of the air valve is prolonged, and the pests are dehydrated and killed. Since the concentration of carbon dioxide is usually controlled to be about 50% when the carbon dioxide is used for killing insects, and the content of carbon dioxide in the air is only about 0.03%, a large amount of carbon dioxide needs to be stored, the use and the operation are inconvenient, the cost is relatively high, and the greenhouse effect is aggravated by the carbon dioxide released after the insect killing.
The low-oxygen modified atmosphere disinsection is an effective method for disinsection by regulating and controlling the oxygen concentration in the storage environment of the traditional Chinese medicinal materials. The principle of air-conditioned disinsection is that pests are suffocated and die due to oxygen deficiency by creating a low-oxygen environment; but has the disadvantages of relatively long insecticidal time and low insecticidal efficiency.
Tests show that the proper temperature rise of the larvae or adults can accelerate the activity of the larvae or adults, accelerate the respiration of the larvae or adults, promote the opening of air valves, accelerate the evaporation of water in the larvae and promote the death of pests. However, for the traditional Chinese medicine material hypoxia air-conditioning insecticidal system, the repeated regulation and control of the temperature control system easily causes the change of the pressure in the storage space, which affects the long-term maintenance of the hypoxia environment; for the traditional Chinese medicinal materials which are sensitive to temperature or are volatile, the effective components are easy to volatilize or be oxidized and deteriorated along with the rise of the temperature.
Disclosure of Invention
Aiming at the technical problems in the prior art, the invention provides a combined air-conditioning insecticidal system, which comprises: carrying out airtight enclosure; a low oxygen device configured to provide a low oxygen content gas to the gas tight enclosure; a carbon dioxide providing device configured to provide carbon dioxide gas to the airtight enclosure; and a gas distribution device configured to adjust the amount of nitrogen gas from the hypoxia device and carbon dioxide gas from the carbon dioxide supply device; wherein, the oxygen content in the airtight enclosure is configured to be 0.1-10%, and the carbon dioxide content is configured to be 1.0-20.0%.
The combined air-conditioning insecticidal system comprises an airtight enclosure, wherein the oxygen concentration in the airtight enclosure is set to be 0.1-3%, and the carbon dioxide concentration in the airtight enclosure is set to be 3.0-5.0%.
A combination modified atmosphere insecticidal system as described above wherein said airtight enclosure is a sealed bag, or an insecticidal cabinet, or an airtight store, or an airtight flexible tent.
The combined controlled atmosphere insecticidal system as described above, further comprising a monitoring device configured to monitor oxygen and carbon dioxide concentrations within the airtight enclosure.
The combined controlled-atmosphere pesticidal system as described above, further comprising an oxygen control component configured to control the hypoxic gas from the hypoxic device; and an oxygen reduction assembly configured to reduce the oxygen content of the gas flowing therethrough.
The system as described above, the carbon dioxide supply device comprising: a carbon dioxide gas source configured to provide carbon dioxide gas; and a flow control assembly configured to control the volume, flow rate of gas provided by the carbon dioxide gas source.
The combined air-conditioning insecticidal system comprises the following air distribution devices: a gas distribution assembly configured to receive gas provided by the hypoxia device and the carbon dioxide providing device and provide the gas to the gas tight enclosure; and a detection control component configured to detect the contents of oxygen and carbon dioxide in the received gas, and to adjust the contents of oxygen and carbon dioxide to be within a set range.
The combined controlled atmosphere insecticidal system comprises the following components in parts by weight: a gas production component configured to collect a gas sample within the gas-tight enclosure; and a detection component configured to detect a component of the collected gas sample and send a detection result to the gas distribution apparatus.
The combined controlled atmosphere insecticidal system has the insecticidal time within 2 days, or within 7 days, or within 15 days.
A modified atmosphere insecticidal method combining hypoxia and carbon dioxide comprises the steps of filling low-oxygen gas into an airtight enclosure, and enabling the oxygen content in the airtight enclosure to be 0.1% -10%; when the oxygen concentration in the airtight enclosure approaches to a set range, filling carbon dioxide into the airtight enclosure, so that the content of the carbon dioxide in the airtight enclosure is configured to be 1.0-20.0%; and stopping when the concentrations of oxygen and carbon dioxide in the airtight enclosure both accord with the set range.
A modified atmosphere insecticidal method combining hypoxia and carbon dioxide comprises filling a low-oxygen gas into an airtight enclosure; when the oxygen concentration in the airtight enclosure is slightly lower than a set range, low-oxygen gas and carbon dioxide are filled into the airtight enclosure simultaneously, so that the oxygen content in the airtight enclosure is configured to be 0.1-10%, and the carbon dioxide content is configured to be 1.0-20.0%; and stopping when the concentrations of oxygen and carbon dioxide in the airtight enclosure both accord with the set range.
The combined air-conditioned insecticidal system provided by the invention improves the insecticidal efficiency by using the low-oxygen air-conditioned auxiliary carbon dioxide, overcomes the technical defects of relatively long time for killing insects, difficulty in maintaining a low-oxygen environment and the like by only using a low-oxygen method, provides an environment-friendly, convenient and efficient insecticidal method, has the advantages of safety, batch treatment and the like, and is an insecticidal system with high system automation degree and convenience in operation.
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 diagram of the internal structure of a combined controlled atmosphere insecticidal system according to one embodiment of the 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 derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within 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 below to enable those skilled in the art to practice the teachings of the present 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.
The multi-component low-oxygen modified atmosphere insecticidal system disclosed by the invention is assisted to fill carbon dioxide gas with appropriate concentration on the basis of low-oxygen modified atmosphere, can stimulate the breath of pests, prolong the opening time of the air valves of the pests, accelerate the water consumption of the pests and achieve the effect of killing the pests in a short time.
In addition to killing pests, the term "killing" as used herein refers to inhibiting the physiological activity of pests so that the pests are slow to develop and cannot harm the quality of goods to be killed, such as Chinese medicinal herbs.
Fig. 1 is a schematic diagram of the internal structure of a combined controlled atmosphere insecticidal system according to an embodiment of the invention. As shown in the figure, the hypoxic controlled atmosphere insecticidal system comprises a hypoxic device 100, a carbon dioxide providing device 200 and an air distribution device 300. The low oxygen apparatus 100 provides a low oxygen content gas to the gas tight enclosure 400 and the carbon dioxide providing apparatus 200 provides a carbon dioxide gas to the gas tight enclosure 400. In the present invention, the hypoxia device 100 and the carbon dioxide providing device 200 transmit the gas to the gas distribution device 300, and the gas distribution device 300 detects and controls the concentration of the received gas and transmits the gas to the airtight enclosure 400, so that the oxygen content and the carbon dioxide content in the airtight enclosure 400 are controlled within a set range. According to an embodiment of the present application, the multi-component low-oxygen controlled-atmosphere insecticidal system further comprises a monitoring device 500, wherein the monitoring device 500 monitors the concentration of each component gas inside the airtight enclosure 400 and transmits the monitoring result to the gas distribution device 300. According to an embodiment of the present application, the gas distribution device 300 receives the result sent by the detection device 500, and further regulates and controls the concentration of each component gas inside the airtight enclosure 400.
The hypoxic apparatus 100 includes an oxygen control assembly 101 and an oxygen reduction assembly 102. When the source gas flows through the oxygen reduction assembly 102, the oxygen reduction assembly 102 separates oxygen from the source gas to reduce the oxygen content therein, thereby forming a low oxygen content gas. According to one embodiment of the present application, the source gas may be air. According to one embodiment of the present application, the oxygen in the low oxygen content gas is no more than 5% by volume. According to a preferred embodiment of the present application, the low oxygen content gas has no more than 2% oxygen by volume. According to one embodiment of the present application, the source gas may also be separated nitrogen. According to one embodiment of the present application, the oxygen reduction assembly 102 provides a low oxygen content gas to the gas tight enclosure 400. According to one embodiment of the present application, the source gas is delivered to the oxygen reduction assembly 102, and the oxygen reduction assembly 102 further partially or completely removes oxygen mixed in with the source gas flowing therethrough to provide a low oxygen content gas to the outside, for example, to provide a low oxygen content gas to the gas tight enclosure. According to an embodiment of the present application, when the source gas is nitrogen, the nitrogen may be directly supplied to the outside without flowing through the oxygen reduction assembly 102, for example, the nitrogen may be supplied to the airtight enclosure.
The oxygen control module 101 can regulate the oxygen reduction module 102, and control the oxygen reduction module 102 to output a low oxygen content gas containing a range of oxygen. For example, the oxygen control assembly 101 sets the oxygen content between 3% -5% and sends the set value to the oxygen reduction assembly 102. The oxygen reduction assembly 102 receives a setting to perform an oxygen reduction process on the source gas flowing therethrough and outputs a low oxygen content gas having an oxygen content of 3-5% by volume. It will be appreciated by those skilled in the art that the low oxygen content gas comprises primarily nitrogen.
Carbon dioxide supply 200 includes a carbon dioxide gas source 201 and a flow control assembly 202. Carbon dioxide gas source 202 provides carbon dioxide to insecticidal device 400. According to one embodiment of the present application, carbon dioxide gas source 202 may be one or more of a carbon dioxide producing assembly, a carbon dioxide cylinder, dry ice. According to one embodiment of the present application, the carbon dioxide gas source 201 delivers carbon dioxide gas to the flow control assembly 202, and the flow control assembly 202 detects and controls the amount of carbon dioxide in the gas delivered to the gas distribution apparatus 300.
The gas distribution apparatus 300 includes a gas distribution assembly 302 and a detection control assembly 303. According to one embodiment of the present application, the gas distribution apparatus 300 further comprises a display assembly 301. The gas distribution assembly 302 receives the low oxygen content gas, such as nitrogen, transmitted by the oxygen reduction assembly 102 and the carbon dioxide transmitted by the flow control assembly 202 and delivers the received gas to the gas-tight enclosure 300. According to an embodiment of the present application, the gas distribution assembly 302 may further regulate the flow rates of the carbon dioxide and the hypoxic gas.
According to one embodiment of the present application, a set value may be set at the detection control component 303. According to one embodiment of the application, the detection control component 303 may set settings for both the gas-tight enclosure 400 and the hypoxic apparatus 100 and carbon dioxide providing apparatus 200. According to one embodiment of the present application, the set point includes, but is not limited to, temperature, humidity, oxygen content, low oxygen gas flow rate, carbon dioxide content, carbon dioxide flow rate.
According to one embodiment of the present application, the detection control module 303 detects whether the concentration, flow rate, etc. of the gas received by the gas distribution module 302 meet a set value according to the set value. When the received gas does not meet the set point, for example, according to one embodiment of the present application, when the carbon dioxide content is low, the gas distribution assembly 302 is controlled to adjust the flow rates of the carbon dioxide and the hypoxic gas, and thus the carbon dioxide content; if the oxygen content is higher, the information is sent to the oxygen control assembly 101, and the oxygen control assembly 101 sets a proper program to enable the oxygen reduction assembly to deliver the gas with the further reduced oxygen content to enable the gas to meet the set value.
The storage environment and the insecticidal condition required by different traditional Chinese medicinal materials are different, and the gas components are distributed according to the types of the medicinal materials stored in the airtight enclosure 300, so that the gas components in the airtight enclosure have the most effective insecticidal proportion. In some embodiments, the gas distribution device 300 further comprises a humidity control device configured to adjust the humidity of the insecticidal gas to improve the insecticidal efficiency and prevent the object to be treated from being damaged due to humidity changes. In some embodiments, the gas distribution device 300 further comprises a temperature control device capable of adjusting the temperature of the gas entering the airtight enclosure, thereby stabilizing the temperature inside the airtight enclosure, protecting the articles inside the airtight enclosure, and improving the insect killing efficiency. According to one embodiment of the application, the detection control component 303 may also set the temperature, humidity, etc. of the environment within the airtight enclosure 400. For example, a temperature of 25 ℃, a humidity of 50%, etc. may be set to control the environment inside the airtight enclosure 400 for the preservation of the contents.
According to one embodiment of the application, different compositions of gases are used for killing insects for different specifications of the airtight enclosure 400 and different articles to be killed. According to an embodiment of the present application, the detection control module 303 is set according to different gas compositions required, and the detection control module 303 automatically adjusts the gas distribution ratio by regulating the gas distribution module 302 to configure multi-component gases with different ratios.
According to an embodiment of the present application, the gas distribution assembly 302 can automatically receive the gases transmitted by the low oxygen device 100 and the carbon dioxide providing device 200 according to the set value, so as to facilitate the control of the gas composition in the airtight enclosure 400 by setting the gas composition concentration range, i.e. the set value, of the detection control assembly 303 according to the type and the specification of the airtight enclosure 400 and the difference of the medicinal materials in the airtight enclosure 400. For example, a set of settings may be 1% oxygen concentration, 5% carbon dioxide concentration, 50% humidity, 25 ℃ temperature; or another set of settings may be 2% oxygen concentration, 3% carbon dioxide concentration, 45% humidity, 30 ℃ temperature, etc. Different set values are set according to the difference of the types, the quantity, the airtight enclosure, the external environment and the like of medicinal materials needing to be killed, all attributes of each set value are mutually independent, namely the set carbon dioxide concentration value, the set temperature and the set humidity are not influenced by the set oxygen concentration value.
According to one embodiment of the application, the oxygen content setting is a concentration of not more than 10% and the carbon dioxide content setting is a concentration of not less than 3%, i.e. the oxygen concentration in the gas-tight enclosure is not more than 10% and the carbon dioxide concentration is not less than 3%. According to one embodiment of the application, the oxygen concentration in the air tight enclosure is 0.1% -10.0% and the carbon dioxide concentration is 3% -20%.
According to one embodiment of the present application, the display device may display a certain gas composition concentration range set by the detection control assembly 303 so that the staff member can know the gas composition required for the airtight enclosure 400. According to one embodiment of the present application, the display assembly 301 may display the types of gases received by the gas distribution assembly 302 and the composition ratios of the various gases. According to one embodiment of the present application, the display assembly 301 may also display the gas species and the composition ratios of the various gases that are ultimately delivered into the gas-tight enclosure. According to one embodiment of the present application, the display assembly 301 may also display the real-time gas types and the composition ratios of the various gases in the airtight enclosure.
The monitoring device 500 comprises a gas production assembly 501 and a detection assembly 502. According to one embodiment of the present application, the detection assembly 502 may further include a sensor that senses the gas composition. According to one embodiment of the present application, the gas production assembly 501 collects gas in the gas-tight enclosure 400 and transmits to the detection assembly 502. The detection assembly 502 receives the gas and detects and analyzes the instantaneous gas composition in the airtight enclosure 400 and transmits the detection results to the detection control assembly 303. The detection control assembly 303 controls the gas distribution assembly 302 according to the requirement, so as to regulate and control the components of various gases in the airtight enclosure 300, and the components of various gases in the airtight enclosure have the most effective insecticidal proportion. According to an embodiment of the present application, the detection component 502 may also transmit the detection results to the display component 301, so that the staff can immediately know the gas composition inside the airtight enclosure 400 and the operation status of the multi-component hypoxic controlled atmosphere insecticidal system, while maintaining the stability of the gas composition inside the airtight enclosure 400.
The airtight enclosure 400 includes an insecticidal cabinet, an airtight warehouse, an airtight bag, an airtight tent, and the like. According to one embodiment of the present application, the airtight bag and the airtight tent may be made of flexible materials. According to one embodiment of the application, the disinsection cabinet may be a vacuum disinsection cabinet. According to different specifications of the airtight enclosure 400, the air-tight enclosure can have diversified insecticidal modes, including diversified air-conditioning process flows and insecticidal modes.
According to one embodiment of the application, the insect killing mode comprises vacuum or air suction-inflation insect killing, atmospheric replacement air inflation insect killing and the like. Different airtight enclosures are matched with different insect killing modes. According to an embodiment of the application, when the airtight enclosure 400 is a vacuum insecticidal cabinet or a flexible airtight bag or an airtight tent for insect killing, the set target concentration is quickly reached by adopting a vacuumizing or air pumping-inflating insecticidal mode, and the insect killing period is shortened. According to an embodiment of the present application, when the airtight enclosure 400 is an insecticidal cabinet or an airtight storehouse, an atmospheric replacement inflation method may be used to kill insects.
The method for killing insects by vacuumizing or pumping and inflating comprises the following steps: referring to the schematic diagram of the system shown in fig. 1, the gas composition inside the airtight enclosure 100 is evacuated by vacuum or air evacuation, and then the multi-component gas with appropriate concentration is configured by the low oxygen device 100, the carbon dioxide providing device 200, and the gas distribution device 300 and is delivered to the airtight enclosure 400 to inflate the same, so that the various gas compositions reach the required insecticidal concentration.
The method for killing insects by replacing and inflating under normal pressure comprises the following steps: referring to the system schematic shown in fig. 1, the atmospheric pressure displacement aeration insecticidal can adopt the following modes:
(1) the gas distribution device 200 provides low oxygen content gas and carbon dioxide to the airtight enclosure as set. First, the gas distribution device 200 adjusts the oxygen concentration of the airtight enclosure 400 by adjusting the hypoxia device 100. When the oxygen concentration in the airtight enclosure 400 is close to the set value, the gas distribution device 200 supplements carbon dioxide for the airtight enclosure 400 by adjusting the carbon dioxide supply device 200 until the oxygen concentration and the carbon dioxide concentration in the airtight enclosure are both in the set value range.
(2) The gas distribution device 200 provides low oxygen content gas and carbon dioxide to the airtight enclosure as set. First, the gas distribution device 200 adjusts the oxygen concentration of the airtight enclosure 400 by adjusting the hypoxia device 100. When the oxygen concentration in the airtight enclosure 400 is close to or slightly lower than the set value, the gas distribution device 200 simultaneously adjusts the hypoxia device 100 and the carbon dioxide providing device 200, so as to accurately detect and adjust the gas components in the airtight enclosure 400 until the oxygen concentration and the carbon dioxide concentration in the airtight enclosure are both in the set value range.
(3) The gas distribution device 200 provides low oxygen content gas and carbon dioxide to the airtight enclosure as set. The gas distribution device 200 simultaneously adjusts the oxygen content, the flow rate of the hypoxic gas and the flow rate of the carbon dioxide in the hypoxic device 100 and the carbon dioxide providing device 200, detects the proportion of the oxygen and the carbon dioxide in the mixed gas provided by the hypoxic device 100 and the carbon dioxide providing device 200, and further adjusts the hypoxic device 100 and the carbon dioxide providing device 200 to enable the mixed gas provided by the hypoxic device 100 and the carbon dioxide providing device 200 to always meet the proportion of the oxygen and the carbon dioxide in the set value. The gas mixture meeting the set value is then charged into the gas tight enclosure 400.
(4) Firstly, adjusting the concentration of carbon dioxide: namely, carbon dioxide with proper concentration is introduced into the airtight enclosure 400 through the gas distribution device 300. Then adjusting the oxygen concentration: and after the concentration of the carbon dioxide reaches or approaches to a set value, introducing nitrogen containing oxygen with specific concentration into the airtight enclosure, and further realizing the synchronous regulation of the concentration of the oxygen or the concentration of the oxygen and the concentration of the carbon dioxide.
The expected insecticidal effect can be achieved by the normal-pressure replacement process, the low-oxygen insecticidal is mainly used, the carbon dioxide insecticidal is used as an auxiliary, so that from the viewpoint of energy conservation and environmental protection, under the condition that the insecticidal effect is similar, the carbon dioxide using amount is lower in the insecticidal methods (1) and (2), and the insecticidal processes (1) and (2) are preferentially recommended.
The time to death of the pests in the airtight enclosure 400 is related to the airtight enclosure specifications and the concentration of oxygen and carbon dioxide within the airtight enclosure. According to one embodiment of the application, under the conditions of the same airtight enclosure specification, the same medicinal materials, the same pests and the like, the higher the carbon dioxide concentration is, the shorter the pest death time is. According to one embodiment of the present application, if a complete insecticidal effect is to be achieved by simply increasing the concentration of carbon dioxide, the concentration of carbon dioxide is preferably controlled within a range of 30% -80%, and the concentration range is related to the sensitivity of the article to be insecticidal, such as medicinal materials, to carbon dioxide, to weak acids, and the sensitivity of pests to carbon dioxide and weak acids. For example, when the object to be killed is sensitive to carbon dioxide or weak acid, the concentration of carbon dioxide is reduced and the killing time is prolonged to achieve the killing effect.
The lower the oxygen content in the storage environment, the higher the insecticidal efficiency of the same medicinal materials under the same volume, the same stacking form and the same storage condition. The insecticidal efficiency is measured by the time that the pests can not damage the medicinal materials and is completely controlled, and the shorter the time, the higher the insecticidal efficiency. It will be appreciated by those skilled in the art that, in addition to killing pests, inhibiting the physiological activity of pests so that they develop slowly is also a means of killing pests.
According to one embodiment of the present application, the hypoxic environment has an inhibitory effect on the growth of different species of pests. For example, the oxygen concentration less than or equal to 3% can inhibit the growth and development of the bark beetle, so that the bark beetle does not threaten medicinal materials, archives, ancient books and the like. The hypoxia can be killed by properly prolonging the hypoxia action time. When the oxygen concentration is less than 0.5%, the bagatelle moth can be directly killed; when the oxygen concentration is less than 0.1%, the tribolium castaneum can be killed in a short time.
According to one embodiment of the application, under the condition that other insecticidal parameters are controlled to be unchanged, the lower the oxygen concentration in the airtight enclosure is, the shorter the lethal time of pests is, and the more obvious the killing effect is. For example, the extinction time of tobacco beetles at an oxygen concentration of not more than 0.1% is significantly shorter than the extinction time at an oxygen concentration of not more than 0.5%. The extinction time of the bark beetle at an oxygen concentration of not more than 0.1% is significantly shorter than at an oxygen concentration of not more than 1%.
Example 1, comparison of the controlled atmosphere insecticidal effect of different modes.
The insecticidal efficiency of the air-conditioning insecticidal system is verified through experiments. And selecting one airtight enclosure according to the requirement of the verification experiment, grouping the airtight enclosures, and carrying out the gas component adjustment experiment in the container. E.g. the airtight enclosure is a flexible airtight bag, a number of flexible airtight bags, e.g. 3, are selected, the flexible airtight bags are numbered, e.g. #1, #2, # 3. 3 parts of the same number of pests and medicinal materials, such as the saw grain robber and the angelica dahurica, are respectively placed in flexible airtight bags with different numbers. Wherein #1 is not subjected to the oxygen reduction treatment, but is subjected to only the carbon dioxide concentration increase treatment; #2 is that only the oxygen reduction treatment is carried out without charging carbon dioxide gas; #3 adopts a mixed modified atmosphere mode of low oxygen and carbon dioxide.
When the mixed modified atmosphere mode of low oxygen and carbon dioxide is adopted for killing insects, firstly, the oxygen reduction component is utilized for carrying out oxygen reduction treatment, and when the oxygen content in the gas components is reduced to the required concentration, the gas is filled into the airtight bag. Usually, the oxygen concentration is preferably controlled in the range of 0.1% to 10.0%. Then, a proper amount of carbon dioxide gas is filled into the airtight bag, and the concentration of the carbon dioxide gas is controlled within the range of 1-20 percent. According to one embodiment of the present application, no oxygen reduction treatment was performed on the insecticidal bag in #1 airtight bag, but only the carbon dioxide concentration in the insecticidal bag was increased to the highest level of the experimental group, for example, 15% to 20%, as a reference. The #2 and #3 airtight bags were filled with nitrogen gas to reduce the oxygen content to 2%, and the #3 airtight bag was filled with carbon dioxide to adjust the concentration to 5%.
Table 1 shows the insecticidal efficiency of the acerola beetles in the airtight bags of this example in a combined hypoxic and carbon dioxide modified atmosphere insecticidal system. Comparing the results of the experiments in the group 1 in the table, only the carbon dioxide concentration is increased to 20%, and the three-day mortality rate of the pests in the medicinal materials, namely the sawing, milling and stealing, is only 20%; when the oxygen content is reduced to 2%, the saw grain robbers die in 3 days; meanwhile, the concentration of carbon dioxide is increased to 5 percent, the content of oxygen is reduced to 2 percent, and the saw-grain thieves die in 2 days. Therefore, the combined modified atmosphere insecticidal of the hypoxia and the carbon dioxide can obviously shorten the insecticidal time and improve the insecticidal efficiency of the traditional Chinese medicine. According to an embodiment of the present application, since the carbon dioxide concentration is increased to cause resource waste, which may cause environmental pollution, and the medicinal materials are corroded by weak acid, it is preferable to use carbon dioxide with a concentration of 3% -5%.
TABLE 1 insecticidal efficiency in modified atmosphere mode of low oxygen and carbon dioxide combination in air-tight bags
| Numbering | Oxygen concentration (%) | Carbon dioxide concentration (%) | Death from sawing grain theft |
| #1 | 21 | 20 | The mortality rate is 20 percent in 3 days |
| #2 | 2 | 0 | All died in 3 days |
| #3 | 2 | 5 | All died in 2 days |
The modified atmosphere insecticidal system of hypoxemia and carbon dioxide combination of this application not only can improve the insecticidal efficiency in the container, shortens the insecticidal time, and is wider to the requirement of oxygen content, has reduced the requirement to the nitrogen gas source, has still reduced the use of carbon dioxide to a very big extent, and the environmental protection just protects and needs the insecticidal article to avoid weak acid invasion and attack. Simultaneously, this application use the insecticidal with low oxygen and carbon dioxide combine, reduce the strict control to oxygen content among the simple low oxygen insecticidal process, resources such as saving electric energy, improve equipment's life.
Example 2, hypoxia combined with carbon dioxide can enhance insecticidal effect.
First, an airtight enclosure, such as an airtight bag, is selected. Then the raw material, the archives, the ancient books and the like are put into the airtight bag, and the insecticidal treatment is carried out according to the inflation method. In the embodiment, the temperature of the gas in the airtight enclosure is set to be 25-30 ℃, the humidity is set to be 40-60%, and the killing effect is determined by maintaining different oxygen contents and carbon dioxide contents in different airtight enclosures and observing the killing time or the time of losing physiological activity of pests.
Table 2 shows the insecticidal effect of the gas-tight enclosure after hypoxic treatment and the addition of a suitable amount of carbon dioxide. As shown in Table 2, although the oxygen concentration in group 2 was increased, the insecticidal effect time was substantially the same as that of the insecticidal effect time of 0.5% oxygen concentration after charging carbon dioxide of about 5%, and thus it was found that hypoxia was combined with carbon dioxide to improve the insecticidal effect.
TABLE 2 the low oxygen combined with carbon dioxide can make the insecticidal effect more obvious
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 (11)
1. A combination controlled atmosphere insecticidal system comprising:
carrying out airtight enclosure;
a low oxygen device configured to provide a low oxygen content gas to the gas tight enclosure;
a carbon dioxide providing device configured to provide carbon dioxide gas to the airtight enclosure; and
a gas distribution device configured to regulate the amount of nitrogen gas and carbon dioxide gas from the carbon dioxide providing device of the hypoxic device;
wherein, the oxygen content in the airtight enclosure is configured to be 0.1-10%, and the carbon dioxide content is configured to be 1.0-20.0%.
2. The combination controlled atmosphere insecticidal system of claim 1, wherein the oxygen content within the airtight enclosure is set to a range of 0.1% to 3% oxygen concentration and the carbon dioxide content within the airtight enclosure is set to a range of 3.0% to 5.0% carbon dioxide concentration.
3. The combination modified atmosphere insecticidal system of claim 1, wherein the airtight enclosure is a sealed bag, or an insecticidal cabinet, or an airtight storehouse, or a flexible airtight tent.
4. The combination modified atmosphere insecticidal system of claim 1, further comprising a monitoring device configured to monitor oxygen and carbon dioxide concentrations within the airtight enclosure.
5. The combination modified atmosphere insecticidal system of claim 1, further comprising an oxygen control component configured to regulate a hypoxic gas from the hypoxic device; and
an oxygen reduction assembly configured to reduce the oxygen content of a gas flowing therethrough.
6. The system of claim 1, the carbon dioxide providing device comprising:
a carbon dioxide gas source configured to provide carbon dioxide gas; and
a flow control component configured to control a volume, a flow rate, of gas provided by the carbon dioxide gas source.
7. The combination controlled atmosphere insecticidal system of claim 1, the air distribution device comprising:
a gas distribution assembly configured to receive gas provided by the hypoxia device and the carbon dioxide providing device and provide the gas to the gas tight enclosure; and
the detection control component is configured to detect the content of oxygen and carbon dioxide in the received gas, and to adjust the content of oxygen and carbon dioxide to be within a set range.
8. The combination modified atmosphere insecticidal system of claim 1, the reservoir gas monitoring device comprising:
a gas production component configured to collect a gas sample within the gas-tight enclosure; and
a detection component configured to detect a component of the collected gas sample and send a detection result to the gas distribution apparatus.
9. The combination modified atmosphere insecticidal system of claim 1, wherein the insecticidal time is configured to be within 2 days, or within 7 days, or within 15 days.
10. A modified atmosphere insecticidal method combining hypoxia and carbon dioxide, comprising:
filling low-oxygen gas into the airtight enclosure to ensure that the oxygen content in the airtight enclosure is configured to be 0.1-10%;
when the oxygen concentration in the airtight enclosure approaches to a set range, filling carbon dioxide into the airtight enclosure, so that the content of the carbon dioxide in the airtight enclosure is configured to be 1.0-20.0%;
and stopping when the concentrations of oxygen and carbon dioxide in the airtight enclosure both accord with the set range.
11. A modified atmosphere insecticidal method combining hypoxia and carbon dioxide, comprising:
filling low-oxygen gas into the airtight enclosure;
when the oxygen concentration in the airtight enclosure is slightly lower than a set range, low-oxygen gas and carbon dioxide are filled into the airtight enclosure simultaneously, so that the oxygen content in the airtight enclosure is configured to be 0.1-10%, and the carbon dioxide content is configured to be 1.0-20.0%;
and stopping when the concentrations of oxygen and carbon dioxide in the airtight enclosure both accord with the set range.
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| CN112243994A (en) * | 2020-10-19 | 2021-01-22 | 天津森罗科技股份有限公司 | Air-conditioning insecticidal system and method |
| CN113647367A (en) * | 2021-08-16 | 2021-11-16 | 双工方程(武汉)科技发展有限公司 | Method for improving mechanical nitrogen-filling insect prevention efficiency in whole-bin mode |
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