CN219249009U - Low-oxygen insect-killing system - Google Patents

Abstract

The utility model relates to a low-oxygen insect-killing system, which comprises: the nitrogen generation device comprises a first nitrogen generation device, a second nitrogen generation device, a gas regulating station and a plurality of airtight spaces, wherein the highest nitrogen purity output by the second nitrogen generation device is higher than that output by the first nitrogen generation device, and the first nitrogen generation device and the second nitrogen generation device are in airtight connection with the plurality of airtight spaces through the gas regulating station; the plurality of airtight spaces are divided into one or more groups, each group comprises N airtight spaces, N is more than or equal to 1, adjacent airtight spaces in each group are connected in an airtight manner through pipelines, and each pipeline is provided with a valve; the gas conditioning station includes: the nitrogen generation device comprises a first branch, a second branch and a plurality of valves, wherein an air inlet of the first branch is connected with an air outlet of a first nitrogen generation device in an airtight manner; the air inlet of the second branch is connected with the air outlet of the second nitrogen making device in an airtight manner. According to the scheme, oxygen reduction is performed, the oxygen reduction time can be shortened, and the oxygen reduction efficiency is improved.

Description

Low-oxygen insect-killing system

Technical Field

The utility model relates to the technical field of air-conditioning insecticidal, in particular to a low-oxygen-content air-conditioning insecticidal system.

Background

The main insecticidal method in the current insecticidal field comprises the following steps: the traditional air-conditioned insecticidal, frozen insecticidal and aluminum phosphide fumigated insecticidal methods. The aluminum phosphide fumigation can kill most pests, but the aluminum phosphide encounters moisture in the air to generate phosphine gas, so that the phosphine is easy to burn to cause fire; and phosphine is also prone to poisoning by personnel. The frozen insecticidal equipment needs to be started all the year round, and has the defects of high energy consumption and the like; and the water drops are easy to condense after the stored articles are taken out, so that the stored articles absorb water, become soft and even decay.

The traditional gas-regulating disinsection is used for carrying out oxygen reduction disinsection on stored articles by using an oxygen removal bag, but the time for reducing oxygen by the traditional gas-regulating disinsection is about 45 days, and the adaptability of pests to oxygen is gradually enhanced due to overlong time for reducing oxygen; the pests can be kept in the low-oxygen environment for about 3 months, so that the purpose of thoroughly killing the pests can be achieved. The traditional passive oxygen reduction mode usually releases a large amount of water vapor, which is easy to cause the stored articles to mildew.

Disclosure of Invention

Aiming at the technical problems in the prior art, the utility model provides a low oxygen pest control and killing system, which is characterized in that the system comprises: the nitrogen generation device comprises a first nitrogen generation device, a second nitrogen generation device, a gas regulating station and a plurality of airtight spaces, wherein the highest nitrogen purity output by the second nitrogen generation device is higher than that output by the first nitrogen generation device, and the first nitrogen generation device and the second nitrogen generation device are in airtight connection with the plurality of airtight spaces through the gas regulating station; the airtight spaces are divided into one or more groups, each group comprises N airtight spaces, N is more than or equal to 1, adjacent airtight spaces in each group are connected in an airtight manner through pipelines, and a valve is arranged on each pipeline; the gas conditioning station includes: the nitrogen generation device comprises a first branch, a second branch and a plurality of valves, wherein an air inlet of the first branch is in airtight connection with an air outlet of the first nitrogen generation device, the first branch comprises one or more air outlets, the one or more air outlets are in airtight connection with N airtight spaces in each group through pipelines respectively, and each pipeline is provided with a valve; the air inlet of the second branch is connected with the air outlet of the second nitrogen generation device in an airtight manner, the second branch comprises one or more air outlets, the one or more air outlets are respectively connected with N airtight spaces in each group in an airtight manner through pipelines, and a valve is arranged on each pipeline.

The low-oxygen insect-killing system is characterized in that the first branch and the second branch are respectively provided with the air outlets of the first nitrogen-producing device and the second nitrogen-producing device, and the air outlets are used for exhausting the nitrogen to the atmosphere when the nitrogen produced by the first nitrogen-producing device and/or the second nitrogen-producing device does not meet the concentration requirement.

The low-oxygen gas regulating and insect killing system is characterized by further comprising a control unit, wherein the control unit is used for controlling the opening and closing states of the valves communicated with the first nitrogen making device, the second nitrogen making device and the valves communicated with the airtight spaces so as to enable the gas regulating parameters in the airtight spaces in the system to reach preset standards.

The low-oxygen gas-content insect disinfestation system is characterized by further comprising gas regulation parameter monitoring equipment, wherein the gas regulation parameter monitoring equipment is used for monitoring gas regulation parameters in a plurality of airtight spaces in the system and sending monitoring results to the control unit, and the gas regulation parameter monitoring equipment comprises at least one of the following components: oxygen content monitoring equipment, temperature monitoring equipment and humidity monitoring equipment.

The low-oxygen-content insect-killing system is characterized by further comprising a communication module, wherein the communication module is used for acquiring working state parameters and air conditioning parameters of the system from the control unit and sending the working state parameters and the air conditioning parameters to the service platform of the Internet of things.

The low-oxygen insect control system is characterized in that the first nitrogen production device comprises a membrane nitrogen production device, and the purity of the output nitrogen is in the range of 95% -99%.

The low-oxygen insect-killing system is characterized in that the second nitrogen-producing device comprises a molecular sieve nitrogen-producing device, and the purity of the output nitrogen is 98% -99.9%.

The low oxygen modified atmosphere insecticidal system as described above, wherein when the oxygen content in the airtight space is reduced to a preset threshold value, a deoxidizer and a desiccant are placed in the airtight space to satisfy the long-term maintenance of low oxygen, the preset threshold value being 0.1% -0.5%.

The low-oxygen-content insect-killing system is characterized in that the number of airtight spaces in the low-oxygen-content insect-killing system is 6-12.

The low oxygen pest control system as described above, wherein the valve comprises an automatic valve and a manual valve.

According to the method, the first-class nitrogen making device and the second-class nitrogen making device are used for sequentially carrying out nitrogen charging and oxygen reduction on the same group of airtight space, so that the oxygen reduction time can be shortened. Further, a plurality of airtight tents in the same group are connected in series, nitrogen is fully utilized, the method is suitable for rapidly reducing oxygen in a plurality of airtight spaces, and the oxygen reduction efficiency is greatly improved.

Drawings

Preferred embodiments of the present utility model will be described in further detail below with reference to the attached drawing figures, wherein:

fig. 1 is a schematic diagram of a low oxygen regulated insecticidal system according to one embodiment of the present application;

FIG. 2 is a schematic diagram of a gas conditioning station configuration according to one embodiment of the present application;

FIG. 3 is a schematic illustration of an oxygen content monitoring device status interface according to one embodiment of the present application; and

FIG. 4 is a schematic diagram of an air conditioning parameter display interface according to one embodiment of the present application.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the following detailed description, reference is made to the accompanying drawings, which form a part hereof, and in which is shown by way of illustration specific embodiments in which the application may be practiced. In the drawings, like reference 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 or structural, logical, or electrical changes may be made to the embodiments of the present application.

To the above-mentioned problem that proposes, this application provides a low oxygen transfers insecticidal system, includes: the nitrogen generation device comprises a first nitrogen generation device, a second nitrogen generation device, a gas regulating station and a plurality of airtight spaces, wherein the highest nitrogen purity output by the second nitrogen generation device is higher than that output by the first nitrogen generation device, and the first nitrogen generation device and the second nitrogen generation device are in airtight connection with the plurality of airtight spaces through the gas regulating station; wherein the airtight spaces are divided into one or more groups, each group comprises N airtight spaces, N is more than or equal to 1, adjacent airtight spaces in each group are connected in an airtight manner through pipelines, and each pipeline is provided with a valve; the gas conditioning station includes: the nitrogen generation device comprises a first branch, a second branch and a plurality of valves, wherein an air inlet of the first branch is in airtight connection with an air outlet of the first nitrogen generation device, the first branch comprises one or a plurality of air outlets, the one or a plurality of air outlets are respectively in airtight connection with N airtight spaces in each group through pipelines, and each pipeline is provided with a valve; the air inlet of the second branch is connected with the air outlet of the second nitrogen generating device in an airtight manner, the second branch comprises one or more air outlets, the one or more air outlets are respectively connected with N airtight spaces in each group in an airtight manner through pipelines, and a valve is arranged on each pipeline.

When the oxygen is reduced, the first-type nitrogen making device and the second-type nitrogen making device are used for working together, and the nitrogen purity of the second-type nitrogen making device is higher than that of the nitrogen output by the first-type nitrogen making device. The first-type nitrogen making device and the second-type nitrogen making device are distributed to airtight spaces with different oxygen contents, so that the oxygen reduction time can be shortened, and the oxygen reduction efficiency can be improved. The first nitrogen making device and the second nitrogen making device are respectively communicated with a plurality of airtight spaces through pipelines by the gas regulating station, and each pipeline is provided with a valve. The nitrogen gas input into the first nitrogen making device and the second nitrogen making device can be automatically switched by controlling the opening and closing of the valve, so that the switching time is shortened. Further, the airtight spaces are divided into one or more groups, each group comprises N airtight spaces, and the airtight spaces in each group can be connected in series, so that nitrogen can be effectively utilized, the purpose of rapid oxygen reduction is achieved, and the oxygen reduction time is shortened.

According to the embodiment of the application, optionally, on the first branch and the second branch, an air outlet is respectively provided at the air outlets of the first nitrogen generation device and the second nitrogen generation device, so that when the nitrogen gas prepared by the first nitrogen generation device and/or the second nitrogen generation device does not meet the concentration requirement, the nitrogen gas is discharged to the atmosphere through the air outlet. The nitrogen concentration detection devices are arranged at the air outlets of the first nitrogen production device and the first nitrogen production device, when the nitrogen concentration does not meet the requirement, the air outlet is communicated with the air outlet, and the nitrogen which does not meet the concentration requirement is discharged into the atmosphere, so that the purity of the nitrogen can be ensured, and the delay of oxygen reduction time is avoided.

According to an embodiment of the present application, optionally, the system further includes a control unit, configured to control the on-off states of the valves of the first type nitrogen generating device, the second type nitrogen generating device, and the valves of the second type nitrogen generating device, so that the air conditioning parameters in the plurality of airtight spaces in the system reach a predetermined standard. The control unit is used for controlling the working states of the first-class nitrogen making device, the second-class nitrogen making device and the valve communicated with the airtight space, so that the first-class nitrogen making device or the second-class nitrogen making device can be timely switched to reduce manpower switching, improve working efficiency and reduce insecticidal time.

According to an embodiment of the present application, optionally, the air-conditioning parameter monitoring device is further configured to monitor air-conditioning parameters in a plurality of airtight spaces in the system and send monitoring results to the control unit, where the air-conditioning parameter monitoring device includes at least one of the following: oxygen content monitoring equipment, temperature monitoring equipment and humidity monitoring equipment. The air-conditioning parameter monitoring equipment is arranged in the airtight spaces respectively, so that the air-conditioning parameters in the airtight spaces can be timely obtained, the control unit can switch the pipeline for reference, and the insecticidal efficiency is improved.

According to an embodiment of the application, optionally, the system further comprises a communication module, wherein the communication module is used for acquiring working state parameters and air conditioning parameters of the system from the control unit and sending the working state parameters and the air conditioning parameters to the service platform of the internet of things. And the working state parameters and the air conditioning parameters are sent to the service platform of the Internet of things through the communication module, so that different people can also check the data, and the death condition of pests can be judged according to the change of the data.

According to an embodiment of the present application, optionally, the first type of nitrogen producing device includes a membrane nitrogen producing device, and the purity of the output nitrogen is in a range of 95% -99%. The gas outlet amount of the membrane nitrogen making device is large, the oxygen content in the airtight space can be rapidly reduced to the target value, and the oxygen reduction time is shortened.

According to an embodiment of the present application, optionally, the second type of nitrogen producing device includes a molecular sieve nitrogen producing device, and the purity of the output nitrogen is in a range of 98% -99.9%. The nitrogen output by the molecular sieve nitrogen making device has high purity, and can reduce the oxygen content in the airtight space to an oxygen content value which can kill most pests and insect eggs and cannot survive.

According to an embodiment of the present application, optionally, when the oxygen content in the airtight space is reduced to a preset threshold value, which is 0.1% -0.5%, a deoxidizer and a desiccant are placed in the airtight space to satisfy the maintenance of hypoxia for a long time. The deoxidizer and the drying agent are matched for use, so that the oxygen content in the airtight space can be maintained within a preset threshold range, the humidity in the airtight space can not be increased, and the safety of stored articles is ensured.

According to an embodiment of the present application, optionally, the number of airtight spaces in the low oxygen regulated insecticidal system is 6-12. The method can simultaneously perform oxygen reduction insecticidal treatment on 6-12 airtight spaces, and improves insecticidal efficiency.

Optionally, according to an embodiment of the present application, the valve comprises an automatic valve and a manual valve. The automatic valve can receive the command of the control unit to be automatically opened and closed. Manual valves require manual opening or closing. Different types of valves can be adapted to more application scenarios.

Various implementations of the low oxygen regulated insecticidal system of embodiments of the present application are described above by way of various embodiments. The structure and operation of the low oxygen insect control system according to the embodiments of the present application will be described below by way of a number of specific examples.

Fig. 1 is a schematic diagram of a low oxygen regulated insecticidal system according to one embodiment of the present application. As shown, the low oxygen regulated insecticidal system 100 includes a first type of nitrogen generation device 110, a second type of nitrogen generation device 120, a gas regulation station 130, and a plurality of airtight spaces. The purity of the nitrogen gas output by the second type nitrogen generating device 120 is higher than that of the nitrogen gas output by the first type nitrogen generating device 110, and the first type nitrogen generating device 110 and the second type nitrogen generating device 120 are connected with a plurality of airtight spaces in an airtight manner through the gas adjusting station 130.

According to one embodiment of the present application, the first type of nitrogen generation apparatus 110 comprises a membrane nitrogen generation apparatus, and the purity of the output nitrogen is in the range of 95% to 99%. The second type of nitrogen production device comprises a molecular sieve nitrogen production device, and the purity of the output nitrogen is 98-99.9%. The membrane nitrogen making device has high nitrogen making speed, and can quickly reduce the oxygen content in the airtight space to an oxygen content threshold value; the nitrogen output by the molecular sieve nitrogen making device has high purity, and the oxygen content in the airtight space can preset the address to a threshold value so as to meet the insecticidal requirement. Wherein the oxygen content threshold is 1% -5%, and the preset threshold is 0.1% -0.5%. When the oxygen content in the airtight space is 1% -5% of the preset threshold value of the oxygen content, the first type nitrogen making device is difficult to continuously charge nitrogen and reduce oxygen, and the second type nitrogen making device is switched to work at the moment, so that the oxygen content can be quickly reduced below the preset threshold value. When the oxygen content in the airtight space is 0.1% -0.5%, most pests and eggs can be killed, and the safety of the collection in the airtight space is improved. The first nitrogen generation device 110 and the second nitrogen generation device 120 are used for reducing oxygen in the same group of airtight space, so that nitrogen with different purity can be filled in the airtight space, and the purpose of rapid oxygen reduction can be achieved.

The airtight spaces are divided into one or more groups, each group comprises N airtight spaces, N is more than or equal to 1, adjacent airtight spaces in each group are connected in an airtight manner through pipelines, and each pipeline is provided with a valve, so that the airtight spaces in each group are connected in series, and the airtight spaces can be a first airtight space and a second airtight space … … Nth airtight space according to the sequence of introducing nitrogen. Wherein the number of airtight spaces in the low-oxygen insect-killing system is 6-12. Referring to fig. 1, a plurality of airtight spaces are arranged in 3 groups, each group including 3 airtight spaces connected in series, for example, an airtight space 101, an airtight space 102, and an airtight space 103 are a first group, an airtight space 201, an airtight space 202, and an airtight space 203 are a second group, and so on.

According to one embodiment of the present application, the airtight space includes a rigid airtight enclosure, which may be an air-conditioned cabinet, and a flexible airtight enclosure, which may be an airtight tent. The airtight tent is formed by adopting a high-barrier composite film to be manufactured on site, and the on-site manufacturing process can reasonably design the size of the tent according to the size of a warehouse space, so that the space utilization rate is improved. The airtight space has high barrier oxygen transmittance of 0.005cm ³ \(m ³ 24 h.0.1 MPa), effectively avoiding indoor and outdoor gas exchange, reducing the starting frequency of nitrogen making equipment, reducing the use cost and prolonging the service life of the nitrogen making equipment.

When 3 groups of airtight spaces are simultaneously subjected to oxygen reduction, the first nitrogen generation device 110 is divided into 3 output gas paths, valves connected with the airtight spaces 101, 201 and 301 are respectively opened, a plurality of valves between adjacent airtight spaces in each group are opened, the gas outlet valves of the airtight spaces 103, 203 and 303 are opened, and other valves are closed, so that the first nitrogen generation device 110 is enabled to introduce nitrogen into the plurality of airtight spaces connected in series in each group; when the oxygen content in the target airtight space of any one of the 3 groups is lower than the oxygen content threshold value and the first time interval, controlling the valve between the air outlet of the first branch and the airtight space of the group to be closed, and controlling the valve between the air outlet of the second branch and the first airtight space of the group to be opened, so that the second nitrogen-making device introduces nitrogen into the plurality of airtight spaces connected in series; and finally, closing all valves in the system when the oxygen content in all the airtight spaces is lower than a preset threshold value and the second time is interval. After nitrogen is filled in a single airtight space, nitrogen is discharged into the air, 3 airtight spaces are connected in series, so that the nitrogen can be effectively utilized, and oxygen can be reduced for 9 airtight spaces each time, thereby shortening the oxygen reduction time and improving the work efficiency of insect killing.

According to one embodiment of the present application, the target airtight space may be the first or last airtight space in each group, or may be the airtight space with the largest volume in each group. When the volumes of the airtight spaces in each group are inconsistent, the airtight space with the largest volume is regarded as the target airtight space, so that the detection accuracy is improved.

According to one embodiment of the present application, the first duration and the second duration are each in the range of 20-60 minutes. When the condition of switching the oxygen content is reached, the detection equipment has possibility of error, so that the switching time is prolonged by 20-60 minutes backwards, the problem of early switching caused by the error of the detection equipment can be avoided, and the oxygen reduction efficiency can be improved.

According to one embodiment of the present application, when the oxygen content in the airtight space is reduced to a preset threshold value, a deoxidizer and a desiccant are placed in the airtight space to satisfy the maintenance of hypoxia for a long period of time. Proper amount of deoxidizer and drying agent are added according to the volume of the airtight space, so that the oxygen content in the airtight space can be maintained at a preset threshold level, and the insecticidal quality is ensured. In addition, the oxygen is reduced in a passive mode by the deoxidizer and the drying agent, so that the working time of the nitrogen making device can be reduced, and the service life of the nitrogen making device can be prolonged. According to another embodiment of the present application, an active oxygen reduction mode and a passive oxygen reduction mode may be combined to achieve the purpose of rapid oxygen reduction.

Fig. 2 is a schematic diagram of a gas conditioning station structure according to one embodiment of the present application. As shown in the figure, the gas conditioning station 130 includes a first branch 131, a second branch 132 and a plurality of valves, where the gas inlet of the first branch 131 is hermetically connected to the gas outlet of the first nitrogen generating device 110, the first branch 131 has one or more gas outlets, and the one or more gas outlets are respectively hermetically connected to N airtight spaces in each group through pipelines, where each pipeline is provided with a valve 1311, 1312, 1313; the air inlet of the second branch 132 is connected with the air outlet of the second nitrogen generating device 120 in an airtight manner, the second branch 132 is provided with one or more air outlets, and the one or more air outlets are respectively connected with N airtight spaces in each group in an airtight manner through pipelines, wherein each pipeline is provided with a valve 1321, 1322 and 1323. When the content in the airtight space is reduced to the oxygen content threshold, the gas regulating station 130 immediately closes the valves 1311, 1312 and 1313, opens the valves 1321, 1322 and 1323, and continuously fills high-purity nitrogen into the airtight space, so that the switching time is shortened, and the nitrogen charging and oxygen reducing efficiency is improved.

According to an embodiment of the present application, on the first branch 131, at the air outlet of the first type nitrogen generating device 110 and on the first branch 132, an air outlet is further provided at the air outlet of the first type nitrogen generating device 120, so that when the nitrogen gas prepared by the first type nitrogen generating device 110 and/or the second type nitrogen generating device 120 does not meet the concentration requirement, the nitrogen gas is discharged to the atmosphere through the air outlet, and a valve 1314 and a valve 1324 are respectively provided on a pipeline connected with the air outlet, and the nitrogen gas prepared by the first type nitrogen generating device 110 and/or the second type nitrogen generating device 120 can be controlled to be emptied by controlling the opening and closing of the valve 1314 and/or the valve 1324. Through the exhaust port, the nitrogen gas which does not conform to the nitrogen gas concentration can be discharged instead of being input into the airtight space, so as not to delay the oxygen reduction process. The valves 1311, 1312, 1313, 1321, 1322, 1323, 1314, and 1324 may be automatic valves or manual valves. The automatic valve includes an electrically operated ball valve, and those skilled in the art will appreciate that other types of valves may be used in the context of the present application, without limitation.

As shown in fig. 1, the low oxygen gas regulating and disinsection system further includes a control unit 140, where the control unit 140 is electrically connected to the first type nitrogen generating device 110 and the second type nitrogen generating device 120, respectively, and is configured to control the working states of the first type nitrogen generating device 110, the second type nitrogen generating device 120, and a plurality of valves in the system, so that the gas regulating parameters in a plurality of airtight spaces in the system reach predetermined standards. The control unit 140 can rapidly reduce the oxygen content in the airtight space and shorten the oxygen reduction time by switching different nitrogen producing devices to input nitrogen with different concentrations into the same airtight space.

According to one embodiment of the present application, the low oxygen regulated insecticidal system further comprises an air regulating parameter monitoring device (not shown) electrically connected to the control unit for monitoring air regulating parameters in a plurality of airtight spaces in the system and transmitting the monitoring results to the control unit 140, wherein the air regulating parameter monitoring device comprises at least one of the following: oxygen content monitoring equipment, temperature monitoring equipment and humidity monitoring equipment. Wherein the oxygen content monitoring device is arranged in the airtight space, the temperature detecting device and the humidity detecting device are arranged inside and/or outside the airtight space, and the temperature and the humidity inside and/or outside the airtight space are detected. The air-conditioning parameter monitoring device can timely feed back monitoring data to the control unit 140, personnel monitoring is reduced, and labor cost can be saved.

According to one embodiment of the present application, the hypoxia controlled insecticidal system further includes a communication module (not shown) electrically connected to the control unit 140, for obtaining the operating state parameters and the air conditioning parameters of the system from the control unit 140 and sending the parameters to the internet of things service platform. Through the service platform of the Internet of things, a user can view data at any place, judge the death condition of pests according to the change of the data, and connect the insecticidal process. Further, when the low oxygen regulating system fails, the communication module can be used for timely sending the failure information to the user terminal, so that unnecessary loss is avoided.

FIG. 3 is a schematic illustration of an oxygen content monitoring device status interface according to one embodiment of the present application; FIG. 4 is a schematic diagram of an air conditioning parameter display interface according to one embodiment of the present application. The hypoxia controlled insecticidal system further comprises a display module (not shown) electrically connected to the control unit for displaying the air conditioning parameters inside and/or outside the plurality of airtight spaces. FIG. 3 is a schematic view of an oxygen content monitoring device status interface, as shown in FIG. 3, wherein the display module is capable of simultaneously displaying at most 40 operating statuses of the oxygen content monitoring device, wherein the green gauge indicates in operation and the red gauge indicates in non-operation. Furthermore, the display module can also display new information such as oxygen content set values, environmental hypoxia alarm values and the like.

As shown in fig. 4, the display module can simultaneously display the air conditioning parameters including oxygen content, temperature and humidity in a plurality of airtight spaces. Each airtight space corresponds to 1 number, and the user can conveniently review the airtight space. And meanwhile, the air conditioning parameters in a plurality of airtight spaces are displayed, so that the oxygen reduction condition in each airtight space can be rapidly acquired, and the problem can be timely found. In addition, the display module can also display the change trend of the air-conditioning parameters in each airtight space, and when the air-conditioning parameters are changed abnormally, prompt information is sent to a user.

In summary, according to the method and the device, the first-type nitrogen making device and the second-type nitrogen making device are used for sequentially charging nitrogen and reducing oxygen in the same group of airtight space, so that the oxygen reduction time can be shortened. Further, a plurality of airtight tents in the same group are connected in series, nitrogen is fully utilized, the method is suitable for rapidly reducing oxygen in a plurality of airtight spaces, and the oxygen reduction efficiency is greatly improved. The application utilizes the gas regulating station to respectively connect the first nitrogen making device and the second nitrogen making device with one or more groups of airtight spaces in an airtight manner through pipelines, and a valve is arranged on the pipelines. The nitrogen output by the first type nitrogen making device and the second type nitrogen making device can be quickly switched by controlling the opening and closing of the valve, so that the switching time is saved, and the labor cost is reduced.

The above embodiments are provided for illustrating the present utility model and not for limiting the present utility model, and various changes and modifications may be made by one skilled in the relevant art without departing from the scope of the present utility model, therefore, all equivalent technical solutions shall fall within the scope of the present disclosure.

Claims (10)

1. A low oxygen, modified atmosphere insecticidal system comprising: the nitrogen generation device comprises a first nitrogen generation device, a second nitrogen generation device, a gas regulating station and a plurality of airtight spaces, wherein the highest nitrogen purity output by the second nitrogen generation device is higher than that output by the first nitrogen generation device, and the first nitrogen generation device and the second nitrogen generation device are in airtight connection with the plurality of airtight spaces through the gas regulating station; the airtight spaces are divided into one or more groups, each group comprises N airtight spaces, N is more than or equal to 1, adjacent airtight spaces in each group are connected in an airtight manner through pipelines, and a valve is arranged on each pipeline;

the gas conditioning station includes: the nitrogen generation device comprises a first branch, a second branch and a plurality of valves, wherein an air inlet of the first branch is in airtight connection with an air outlet of the first nitrogen generation device, the first branch comprises one or more air outlets, the one or more air outlets are in airtight connection with N airtight spaces in each group through pipelines respectively, and each pipeline is provided with a valve; the air inlet of the second branch is connected with the air outlet of the second nitrogen generation device in an airtight manner, the second branch comprises one or more air outlets, the one or more air outlets are respectively connected with N airtight spaces in each group in an airtight manner through pipelines, and a valve is arranged on each pipeline.

2. The low oxygen gas regulating and insect killing system according to claim 1, wherein an exhaust port is provided on the first branch and the second branch at the air outlets of the first type nitrogen producing device and the second type nitrogen producing device, respectively, for exhausting the nitrogen gas to the atmosphere through the exhaust port when the nitrogen gas produced by the first type nitrogen producing device and/or the second type nitrogen producing device does not meet the concentration requirement.

3. The low oxygen gas regulating and insect killing system according to claim 1, further comprising a control unit for controlling the opening and closing states of the valves of the first type nitrogen producing device, the second type nitrogen producing device and the valves communicated with the airtight spaces so that the air regulating parameters in the airtight spaces in the system reach preset standards.

4. A low oxygen regulated insecticidal system according to claim 3, further comprising an air regulating parameter monitoring device for monitoring air regulating parameters in a plurality of airtight spaces in the system and transmitting the monitoring results to said control unit, wherein said air regulating parameter monitoring device comprises at least one of: oxygen content monitoring equipment, temperature monitoring equipment and humidity monitoring equipment.

5. The low oxygen insecticidal system according to claim 4, further comprising a communication module for obtaining working state parameters and air conditioning parameters of the system from the control unit and sending the working state parameters and air conditioning parameters to an internet of things service platform.

6. The low oxygen insecticidal system of claim 1, wherein the first type of nitrogen generation device comprises a membrane nitrogen generation device, and the purity of the output nitrogen is in the range of 95% -99%.

7. The low oxygen gas regulating and insecticidal system according to claim 1, wherein said second type of nitrogen generation device comprises a molecular sieve nitrogen generation device, and the purity of the output nitrogen is in the range of 98% -99.9%.

8. The hypoxia insecticidal system according to claim 1, wherein deoxidizing agent and drying agent are placed in the airtight space to meet a prolonged hypoxia maintenance when the oxygen content in the airtight space is reduced to a preset threshold value, the preset threshold value being 0.1% -0.5%.

9. The low oxygen regulated insecticidal system according to claim 1, wherein the number of airtight spaces in said low oxygen regulated insecticidal system is 6-12.

10. The low oxygen, modified atmosphere insecticidal system of claim 1, wherein said valves comprise automatic valves and manual valves.

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