CN106525702B - A granary equipment fumigation resistance test device and method - Google Patents

Abstract

The invention discloses a fumigation resistance test device and method for granary equipment. The device comprises a test box body and a cover sealingly matched with the box body; The inside of the box is provided with a placement box corresponding to the delivery hole for placing fumigation reagents. The box wall of the placement box is provided with a gas diffusion hole, and the delivery hole is equipped with a hole cover that is sealed and matched with it; the device also includes a monitoring device. A test monitoring system that describes the test environment information in the box. The granary equipment fumigation resistance test device of the present invention simulates the fumigation and insecticidal operating environment in the actual granary, and performs a fumigation test on the tested equipment in the device. The test results caused by leakage are inaccurate, the test process is completely controllable, the data is true and reliable, saving manpower and material resources, and has good economic benefits.

Description

A granary equipment fumigation resistance test device and method

technical field

The invention belongs to the field of granary equipment testing, and in particular relates to a granary equipment fumigation resistance test device and method.

Background technique

In the process of grain storage, due to the influence of various factors, the phenomenon of stored grain insect pests often occurs, and the annual losses due to grain mildew and insect pests account for a large proportion. If these stored pests are not effectively controlled and killed, it will not only cause A large loss of stored grain will also seriously affect the quality of stored grain, which is very harmful. Therefore, in the process of grain storage, it is necessary to effectively control and kill stored grain pests.

At present, the main means of preventing and controlling insect pests in stored grains is to use chemical fumigation to fumigate and kill insects. Chemical fumigation is a technology that uses chemical fumigants to kill stored grain pests and germs in closed grain storage warehouses. Exterminate pests on a large scale. At present, the main chemical fumigant used in the field of grain storage in the world is phosphine. Phosphine is a colorless, highly toxic and flammable gas. It has good diffusivity, good volatility, and is easy to penetrate into the lower layer of grain pile , is a fumigant with good performance, and is widely used in the daily insecticide operations of grain storage enterprises in my country. Phosphine is generally produced by using aluminum phosphide, zinc phosphide, calcium phosphide, etc. to react with water molecules in the air, and the most commonly used one is aluminum phosphide.

Phosphine is corrosive to a certain extent, and it is easy to react with metals such as copper or copper alloys to cause metal corrosion. As one of the main materials of electronic equipment and devices, metal copper is widely used, so phosphine is highly corrosive to electronic equipment. With the continuous development of grain storage intelligence and informatization, the granary equipment is also increasing. The granary equipment mainly refers to the electronic equipment and devices in the granary. Some equipment cannot withstand the fumigation of phosphine gas due to poor air tightness. After the phosphine insecticide fumigation operation is carried out in the granary, it will fail or be damaged, which will bring difficulties to monitoring and increase the cost.

Based on the above reasons, it is necessary for the electronic equipment and devices used in grain storage to undergo a fumigation resistance test before use to ensure that the electronic equipment meets the fumigant resistance requirements before entering the warehouse, so as to avoid the fumigant during use. Failure or damage caused by grain fumigation operation. In addition, for manufacturers of electronic equipment and devices, such test devices are also needed to test products to determine whether the products are resistant to fumigation, so as to determine the research direction of product fumigation resistance.

Contents of the invention

The purpose of the present invention is to address the above-mentioned deficiencies in the prior art, and provide a granary equipment fumigation resistance test device to solve the failure or damage of the electronic equipment and devices used in the existing grain storage monitoring due to chemical fumigation, and provide a A test method using the device.

In order to solve the above technical problems, a technical solution adopted by the present invention is: a granary equipment fumigation resistance test device, which includes a test box, the test box includes a box body and a cover that is sealingly fitted with the box body, the The box and the cover form a closed space for placing the equipment under test and the fumigation reagent; the test box is provided with a drop-in hole for putting in the fumigant reagent, and the inside of the test box is provided with a hole corresponding to the drop-in hole. A placement box for storing fumigant reagents, the box wall of the placement box is provided with a gas diffusion hole for the fumigant gas obtained by the reaction of the fumigant reagent to diffuse into the box, and the delivery hole is equipped with a The hole cover; the test device also includes a test monitoring system for monitoring the test environment information in the box.

In another embodiment of the present invention, the test device further includes a blocking mechanism for blocking and opening the gas diffusion hole.

In another embodiment of the present invention, the placement box is a cylindrical structure with one end open and one end closed, and its open end corresponds to the delivery hole, and the placement box is fixedly connected to the test box; the hole cover It is sealingly matched with the blocking mechanism, and the blocking mechanism includes a ring for rotating operation and a ring set on the ring that extends toward the inside of the box and is rotated and matched with the side wall of the placement box. Blocking piece, the ring is in sealing fit with the hole cover; the blocking piece includes a continuous cylindrical part and an extension part used to cover and block the gas diffusion hole when it is rotated to a set position, the circular ring The barrel part is integrally set with the ring.

In another embodiment of the present invention, the test monitoring system includes a detection sensor for monitoring the test environment information in the box, a data acquisition module connected to the output end of the detection sensor, and a data acquisition module connected to the output end of the data acquisition module. A transmission module, the output end of the data transmission module is used for communication and interconnection with the monitoring terminal; the detection sensor includes a gas sensor arranged inside the box to detect the concentration value of the fumigant gas.

In another embodiment of the present invention, the detection sensor further includes a temperature sensor arranged inside the box to detect the temperature inside the box and/or a humidity sensor to detect the relative humidity inside the box, The output end of the temperature sensor and/or the humidity sensor is connected with the data acquisition module; the test monitoring system also includes an electrical connection with the data acquisition module for the fumigant gas concentration value, the temperature value and/or Or a monitoring display module for real-time display of relative humidity values.

In another embodiment of the present invention, the test device further includes a temperature control mechanism for regulating the internal temperature of the test box and/or a dry-humidity control mechanism for regulating the humidity inside the test box.

In another embodiment of the present invention, the fumigant gas is phosphine gas, and the concentration of phosphine gas in the confined space is greater than or equal to 500mL/m ³ .

According to another aspect of the present invention, the present invention also provides a granary equipment fumigation resistance test method, said method comprising the following steps:

Put the equipment under test into the box of the test box, put the fumigation reagent into the box from the delivery hole, and seal the box;

Start the test, and monitor the test environment information in the box in real time through the test monitoring system;

After the set test time is reached, open the cover of the test box to ventilate and disperse air;

After the fumigant gas concentration drops to the safe concentration range, take out the device under test for testing to check whether its performance parameters meet the requirements of the set indicators.

In another embodiment of the present invention, the fumigant reagent is aluminum phosphide, the fumigant gas is phosphine gas, and the test requirement for the concentration of phosphine gas during the test is greater than or equal to 500mL/m ³ , the The set test time is 5 to 15 days; when the concentration of phosphine gas does not meet the test requirements during the test and aluminum phosphide needs to be added, first operate the blocking mechanism to isolate the storage box from the box by air flow, and then Put the set dose of aluminum phosphide to be added into the placement box from the delivery hole, and then seal the hole cover with the delivery hole, and then operate the sealing mechanism to realize airflow communication between the placement box and the box body, and complete Addition of aluminum phosphide.

In another embodiment of the present invention, the test environment information in the box is detected by a detection sensor, and the output end of the detection sensor is connected to the monitoring terminal through a data acquisition module and a data transmission module. The real-time monitoring process is as follows:

The monitoring terminal sends a signal collection instruction to the data transmission module, and then the data transmission module transmits the signal collection instruction to the data collection module;

After the data acquisition module receives the signal acquisition instruction, it collects the test environment signal sensed by the detection sensor, and then the data acquisition module transmits the collected test environment signal to the monitoring terminal through the data transmission module ;

The monitoring terminal analyzes the collected test environment signals to obtain corresponding test environment data.

The beneficial effects of the present invention are: the granary equipment fumigation resistance test device of the present invention constructs a partially sealed fumigation gas environment, which simulates the fumigation and insecticidal operating environment in the actual granary, and performs fumigation tests on the tested equipment in the device, The fumigant gas concentration in the fumigant gas environment is greater than the fumigant gas concentration in the actual fumigation and insecticidal operation environment, and the tested equipment is placed in a high-concentration environment for a long enough test time, and the performance parameters are tested after taking it out to determine its performance. Fumigation resistance ensures the reliability of the test.

The device can test the fumigation resistance of the equipment in the warehouse of the grain storage industry, so as to confirm the availability of the tested equipment in the grain warehouse, and avoid the damage and economic loss caused by the blind installation and use of the equipment in the grain warehouse. During the test, the concentration in the box is monitored in real time to avoid abnormal test results caused by the decrease in the concentration during the test due to insufficient airtightness of the box; at the same time, the online real-time monitoring of the fumigant gas concentration can prevent the experiment caused by the leakage of phosphine gas. Room safety accidents, to ensure that the test process is completely controllable, the data is true and reliable, save manpower and material resources, and have good economic benefits.

Description of drawings

Fig. 1 is a structural schematic diagram of an embodiment of a granary equipment fumigation resistance test device of the present invention;

Fig. 2 is a structural schematic diagram of an embodiment of the blocking mechanism in the embodiment of the fumigation resistance test device for granary equipment of the present invention;

Fig. 3 is the flow chart of the embodiment of the fumigation test method of granary equipment of the present invention;

Fig. 4 is a flow chart of real-time monitoring of test environment information in the embodiment of the fumigation resistance test method for granary equipment of the present invention.

Detailed ways

In order to facilitate the understanding of the present invention, the present invention will be described in more detail below in conjunction with the accompanying drawings and specific embodiments. Preferred embodiments of the invention are shown in the accompanying drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described in this specification. On the contrary, these embodiments are provided to make the understanding of the disclosure of the present invention more thorough and comprehensive.

It should be noted that, unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by those skilled in the technical field of the present invention. Terms used in the description of the present invention are only for the purpose of describing specific embodiments, and are not used to limit the present invention. The term "and/or" used in this specification includes any and all combinations of one or more of the associated listed items.

As shown in FIG. 1 , the test device in this embodiment includes a test box, which includes a box body 1 with one end open, and a cover body 2 sealingly fitted with the box body at the opening. During the test, the device under test and the fumigation reagent should be put into the box 1 first, and then the box 1 and the cover 2 are sealed and assembled to form a closed space for testing to maintain the concentration required for the test. Here The confined space can avoid the leakage of fumigant gas due to the poor airtightness of the box during the test, resulting in insufficient fumigant gas concentration in the box and the need to replenish fumigation reagents into the box during the test. Of course, the device also includes a test monitoring system for monitoring the test environment information in the box. The test monitoring system can at least monitor the concentration of fumigant gas, so as to monitor in real time whether there is leakage of fumigant gas during the test. If the fumigant gas leaks, causing the concentration of the fumigant gas in the box to fail to meet the test requirements, it is necessary to replenish the fumigant reagent in the box in time.

In this embodiment, the most commonly used phosphine gas in the granary fumigation method is selected to carry out the fumigation resistance test on the equipment under test. The concentration of phosphine gas in the confined space is greater than or equal to 500mL/m ³ . The tested equipment here includes cameras, grain condition system collectors, humidity sensors, gas sensors, pest sensors, etc. Since phosphine gas is highly corrosive to electronic equipment, this test has practical significance and is more practical.

Since phosphine gas is mainly generated and obtained by reacting with water molecules in the air by using aluminum phosphide, zinc phosphide, calcium phosphide, etc. in practical applications, the fumigating agent of this embodiment is preferably aluminum phosphide, and phosphorus Aluminum phosphide is generally a solid powder or tablet, and will leave a residue after the reaction is completed. For the convenience of handling, the aluminum phosphide can be separated from the equipment under test, and the aluminum phosphide can be placed in a small independent space. Inside. Therefore, in the present embodiment, a delivery hole 14 dedicated to putting in aluminum phosphide is set on the test box, and this delivery hole will be far smaller than the size of the opening of the box body, and a dedicated delivery hole corresponding to the delivery hole is set inside the test box. For the placement box 5 where aluminum phosphide is placed, gas diffusion holes 6 are provided on the box wall of the placement box. The gas diffusion hole 6 here can be at least one large hole with a larger diameter, or a plurality of small holes in gauze shape, and its specific structure is not limited by the description, as long as the phosphine gas can be diffused to the entire Just the box. Of course, in order to maintain the airtightness of the inner space of the box body, a hole cover 4 sealingly fitted with the delivery hole is also equipped. Because phosphine is highly toxic, when the concentration inside the box is reduced to the point where aluminum phosphide needs to be supplemented, the amount of phosphine gas leakage caused by the operation through this injection hole is much smaller than that of opening the lid of the test box. , then the relative harm to people will be smaller, ensuring the safety of operators.

Here, the injection hole 14 and the supporting hole cover 4 and the placement box can be arranged on the casing 1 or the cover body 2, and the position of the arrangement does not affect the airtightness of the test space. In addition, the structure of the placement box for placing aluminum phosphide is also various, and square structure, circle or other irregular shapes are all available.

The test device of the present invention is filled with the phosphine gas required for the test in a closed space (in this embodiment, the phosphine gas is produced by the reaction of aluminum phosphide and moisture in the air), and the tested equipment is Place it in the confined space for a period of time. This time can be determined according to the test content and the actual situation. After the test time is reached, the device under test is taken out for testing to determine whether its performance parameters meet the standards. During the test process, the test environment information in the box must be monitored in real time. Here is mainly the concentration information of phosphine gas, so that it is always kept within the range required by the test. Once the concentration drops and does not meet the concentration requirements required for the test, the It must be replenished immediately to maintain the reliability of the test. The device can well simulate the actual environment (mainly concentration environment) of the granary during fumigation and insecticide, and conduct fumigation resistance tests on some equipment (including sensors, collectors, etc.) that are easily corroded by phosphine gas, and in the test The concentration of phosphine gas at the time is higher than the concentration of the actual granary environment, the test reliability is high, and the test results are highly credible.

Further, in order to further avoid the outward diffusion of phosphine gas when adding aluminum phosphide, the device is also provided with a blocking mechanism for blocking and opening the gas diffusion hole. When adding aluminum phosphide to the box, avoid the leakage of phosphine gas in the box to the outside of the box.

The insertion hole 14 of the aluminum phosphide of the present embodiment and the hole cover 4 that is sealingly matched with it are arranged on the casing 1; Corresponding to the hole 14 , the placement box 5 is fixedly connected with the test box 1 . As shown in Figure 2, it is a structural diagram (enlarged view) of the embodiment of the blocking mechanism. As can be seen from this figure, the blocking mechanism of the present embodiment includes a circular ring 15 for rotating operation and a facing box set on the circular ring. The inside of the body 1 is extended and rotated to coincide with the side wall of the storage box 5. There is a round hole 18 in the center of the ring. This round hole corresponds to the injection hole 14 of aluminum phosphide. The ring is sealed with the hole cover 4. To ensure the airtightness of the box; the blocking piece includes a continuous cylindrical portion 16 and an extension portion 17 for covering and blocking the gas diffusion hole 6 when it is rotated to the set position, and one end of the cylindrical portion 16 is connected to the ring 15 It is integrally arranged, and the other end is integrally arranged with the extension part 17 . On the one hand, the blocking mechanism can prevent the leakage of phosphine gas when adding; on the other hand, the ring 15 and the cylindrical part 16 of the blocking mechanism cooperate with each other to further increase the sealing effect when sealing the box.

The blocking piece of this embodiment can be a structure that is rotated and assembled with the inner wall of the storage box 5, and can also be a structure that is rotated and assembled with the outer wall of the storage box 5. Both structures can cover the diffusion of blocking gas during rotation. The role of hole 6.

In addition, the placement box 5 is fixedly connected to the test box, and there are many ways to connect it. For example, the placement box 5 and the box body 1 of the test box can be fixedly connected by two connecting rods, and one end of the connecting rod is fixed on the box body. 1, the other end is fixedly connected with the side wall of the placement box 5 bottom (need to avoid the position of the blocking sheet).

When adopting the blocking mechanism of the above-mentioned structure, in order to achieve the purpose of blocking, the gas diffusion hole 6 set on the side wall of the storage box 5 must also be designed in accordance with each other, that is, the gas diffusion hole cannot completely cover the side wall of the storage box, and it needs to When the blocking mechanism rotates to a certain position, it can completely cover the blocking gas diffusion hole.

The working principle of the plugging mechanism: Once the concentration of phosphine gas in the box is monitored to drop and cannot meet the test requirements during the test, when the operator adds aluminum phosphide to the box 1, first operate the ring to rotate it To a certain position, utilize the blocking sheet to block the gas diffusion hole 6, and place the box 5 to isolate the inner space of the casing 1, and open the hole cover 4 to add corresponding doses of aluminum phosphide. Hydrogen hydride will not diffuse outwards through the placement box 5, so the leaked gas is very little, and such a structure further ensures the personal safety of operators.

In addition, the blocking mechanism here is not limited to the structure given above, and other forms can also be adopted, such as setting the gas diffusion hole in the lower area of the side wall of the storage box, and setting a channel valve at the upper part, during the fumigation test process Close the channel valve to prevent the phosphine gas from overflowing, but when aluminum phosphide is added from the delivery hole and the airtight cover is set, the channel valve can be opened so that the aluminum phosphide falls to the bottom of the storage box, and then closed . The use of a plugging structure similar to the above mechanism can prevent the leakage of phosphine gas in the box when aluminum phosphide is added, and will not be listed here.

Further, the test monitoring system of this embodiment includes a detection sensor for monitoring the test environment information in the cabinet, a data acquisition module 11 connected to the output end of the detection sensor, and a data transmission module 10 connected to the output end of the data acquisition module 11, The output end of the data transmission module 10 is used for communication and interconnection with the monitoring terminal. The detection sensor here at least includes the gas sensor 8 that is arranged inside the box to detect the phosphine gas concentration value, the data acquisition module 11 collects the phosphine gas concentration value induced by the gas sensor, and the data transmission module 10 collects the phosphine gas concentration value by the data acquisition module 11. The phosphine gas concentration data communication is transmitted to the monitoring terminal.

In addition to the gas sensor, the detection sensor of the test monitoring system also includes a temperature sensor installed inside the box to detect the temperature inside the box and a humidity sensor to detect the relative humidity inside the box, so as to observe the test environment in real time during the test. temperature and humidity values. The output terminals of the temperature sensor and the humidity sensor are all connected with the data acquisition module 11; the data acquisition module 11 further collects the temperature value sensed by the temperature sensor and the relative humidity value sensed by the humidity sensor, and the data transmission module 10 communicates the temperature value and the relative humidity value transmitted to the monitoring terminal.

For the convenience of installation and sealing of the box body, the temperature sensor and the humidity sensor of this embodiment adopt the integrated temperature and humidity sensor 7 which has two functions at the same time. Of course, the temperature sensor and the humidity sensor here can be selected according to actual needs, both can be selected, or one can be selected. The detection heads of the gas sensor 8 and the temperature and humidity sensor 7 are all fixed on the inner wall of the box body 1, and the output ends are connected with the signal acquisition module 11 set on the outer wall of the box through the perforation provided on the side wall.

The output interface of the data acquisition module 11 here is an RS232 serial port; the data transmission module 10 adopts a serial port server, and the serial port server has the function of converting a serial port signal to a network signal, and can convert the RS232 serial port of the signal acquisition module into a TCP/IP network interface to realize RS232 The two-way transparent transmission of data between the serial port and the TCP/IP network interface enables the signal acquisition module to immediately have the TCP/IP network interface function, connect the network and the monitoring terminal for data communication, and greatly expand the transmission distance of the gas sensor acquisition signal. The monitoring terminal can be a host computer, or a mobile terminal such as a mobile phone or an IPAD. The monitoring terminal of this embodiment is preferably a host computer, and the host computer here refers to a monitoring computer that can directly issue control commands, and various signal changes are displayed on the screen. (such as concentration, temperature, relative humidity).

Further, the test device may also include a temperature control mechanism for regulating the internal temperature of the test box, and a dry-humidity control mechanism for regulating the humidity inside the test box. Using the above-mentioned mechanism can change the environmental conditions of the test more conveniently, such as Test temperature and relative humidity in order to more realistically simulate the actual use environment, increase the reliability of the test, and also make the application range of the test device wider. There are many ways to realize the temperature control mechanism and dry-humidity control mechanism here. For example, the temperature regulation mechanism can adopt the method of water pipe temperature adjustment, and a water pipe is penetrated through the box body, and the junction of the water pipe and the box body is sealed, or in the box. The bottom plate of the body is equipped with a water pipe assembly, and the temperature is adjusted by passing hot water or cold water into the water pipe; the humidity adjustment mechanism adopts the configuration that an atomizing nozzle is installed inside the box, and a pressurizing device connected with the atomizing nozzle is installed outside the box structure, when the humidity needs to be increased, the water is passed into the pressurizing device, and then the pressurized water is sprayed into the box through the atomizing nozzle to increase the air humidity in the box. Of course, it can also be used similar to a household humidifier. The structure of the class, the specific structure will not be repeated here.

Further, the test monitoring system of this embodiment may also include a monitoring and display module for real-time display of the phosphine concentration value, temperature value and/or relative humidity value, the monitoring and display module is electrically connected with the data acquisition module, and can be set at On the outside of the test box, the phosphine concentration, temperature and/or relative humidity values collected by the data acquisition module are dynamically displayed in real time, which increases the intuitiveness of data display and monitoring during the test.

In addition, the test device also includes a power supply 12 and a power indicator light 9 for indicating whether the power supply module is powered on, and a plug 13 connected to the power supply is placed on the power supply module. The power supply module of this embodiment is preferably a switching power supply, which can convert 220V alternating current into direct current, and supply power to electrical equipment in the device such as gas sensors, signal acquisition modules, serial port servers, etc., and has small size, light weight and high conversion efficiency. high merit. Of course, in order to visually observe whether the power supply is energized, a corresponding power indicator light can be set, and the work indicator light will light up when the AC power is connected.

In addition, a handle 3 is provided on the cover, which makes the operation of the cover more convenient. The box body of the test box is made of transparent plexiglass material, which is light in weight and can visually check the internal situation. There are rubber sealing rings (not shown in the figure) in the opening of the box body 1, the injection hole 14 of the fumigation reagent, the perforation set on the side wall, the central hole of the ring of the sealing mechanism, etc., to ensure that the device is in good condition. air tightness. Of course, in order to expand other functions, corresponding functional modules can also be added as required.

Based on the same idea, the present invention also provides a test method using the above-mentioned fumigation test device for granary equipment. As shown in Figure 3, it is a flow chart of an embodiment of the granary equipment fumigation resistance test method provided by the present invention. As can be seen from Figure 3, the method includes the following steps:

Step S1: Test preparation, perform performance inspection on the equipment under test, confirm that the performance parameters of the equipment under test meet the set index requirements of the equipment, and the equipment can operate normally, put the tested equipment whose performance parameters meet the set index requirements into the test box In the casing 1, put the fumigation reagent of the corresponding dose into the placement box, and seal the casing to ensure the airtightness of the casing.

The fumigation gas in the present embodiment is preferably phosphine gas, and the fumigant reagent is preferably aluminum phosphide, and aluminum phosphide generates phosphine gas by reacting with moisture in the air in the box, and the concentration of phosphine in this test The test requirement is greater than or equal to 500mL/m ³ . The specific dose of aluminum phosphide here is calculated according to the actual space size of the box and the concentration requirements of the test. In addition, the test performed in this embodiment is a test without power on the device under test.

Before the test starts, at first the power plug 13 of the device is connected to the 220V AC power supply. After power-on, the power indicator light 9 normally displays, and the test monitoring system works normally. The concentration of phosphine gas is within the safe concentration range, and the safe concentration range of this embodiment is 0～0.2mL/m;

Then, put the device under test into the test box 1, close the lid 2 tightly, read the phosphine gas concentration data and temperature and humidity data in the box 1, and record the initial data;

Afterwards, open the lid 4 of the injection hole, according to the calculated concentration requirement (not less than 500mL/m), drop into the corresponding dose of aluminum phosphide, cover the lid 4 quickly, and seal the injection hole 14 with the casing 1.

Step S2: start the test after the test preparation is completed, and monitor the test environment information in the box 1 in real time through the test monitoring system, especially the concentration information of phosphine gas, so as to ensure that the environment information in the box during the test meets the test requirements, and Store and record related measurement data.

In the actual granary environment, the duration of fumigation and insecticide is generally one month, but when conducting experimental tests, due to the high concentration requirements of the test, it does not need such a long time, generally 5 to 15 days of testing is enough Guaranteed the accuracy of the test.

The temperature range tested in this embodiment is -10°C-40°C, and the humidity range is 20-80RH.

During the test, the phosphine gas concentration in the box 1 is monitored in real time. Once it is found that the gas concentration in the box does not meet the test requirements, it is necessary to add aluminum phosphide in time. The supplementary process is as follows: first operate the blocking mechanism to isolate the storage box 5 from the box body 1 by air flow, then put the aluminum phosphide of the set dose to be added into the storage box 5 from the delivery hole 14, and then place the hole cover 4 It is sealed and matched with the delivery hole 14, and then the blocking mechanism is operated to realize airflow communication between the placement box and the box body, and the addition of aluminum phosphide is completed.

Step S3: After the set test time is reached, the test ends. At this time, the power supply 12 is first cut off, and then the cover 2 of the test box is opened, and the ventilation device in the laboratory is turned on to ventilate and disperse air;

Step S4: After ventilating for a period of time, after the concentration of phosphine gas drops to the safe concentration range, take out the device under test for testing, and check whether its performance parameters meet the requirements of the set indicators. If so, the device under test is considered to be resistant The fumigation test of phosphine, if it is not met, it is considered that the equipment under test is not resistant to the fumigation test of phosphine.

In the above process, the real-time monitoring of the phosphine gas concentration data and temperature and humidity in the box is carried out by corresponding gas sensors 8 and temperature and humidity sensors 7, and the output ends of each sensor are connected with a data acquisition module 11, and the data acquisition module 11 is connected with the upper computer through the data transmission module 10, the data transmission module here is preferably a serial port server, and the monitoring terminal is preferably the upper computer.

As shown in Figure 4 is the flow chart of real-time monitoring of test environment information. It can be seen from the figure that the method realizes real-time monitoring of the test environment of the box through software, and uses the host computer software to connect the test device through the TCP/IP network. First, the connection test is performed. , to determine whether to establish a connection. After the connection is established, the real-time monitoring process is as follows:

The upper computer sends signal acquisition instructions to the serial server, and then the serial server converts the instruction content of the TCP/IP protocol into the content of the RS232 interface protocol, and then transmits it to the data acquisition module 11;

After the data acquisition module 11 receives the signal acquisition instruction, it collects the corresponding signals sensed by the gas sensor 8 and the temperature and humidity sensor 7, and then the data acquisition module transmits the collected test environment signal to the host computer through the serial port server;

The upper computer analyzes the collected signals, obtains the corresponding phosphine gas concentration data and temperature and humidity data, and displays and records the analyzed data.

Determine whether the program exits, if not, continue the above process until the user exits the program.

The granary equipment fumigation resistance test device of the present invention constructs a partially sealed fumigation gas environment through the box body of the test box and the cover body sealingly matched with it. The fumigation test is carried out on the test equipment. The concentration of the fumigant gas in the fumigation gas environment is greater than the actual fumigation and insecticidal operation environment, and the tested equipment is placed in a high-concentration environment for a long enough test time, and the performance parameters are tested after taking it out. Determining its fumigation resistance ensures the reliability of the test. In addition, during the test process, the test environment information in the box is monitored in real time through the test monitoring system. If the concentration drops and the fumigant reagent needs to be replenished, the fumigant reagent is put into the placement box from the delivery hole to reduce the amount of fumigant outside the body during the addition process. At the same time, the use of the placement box also avoids the pollution of the test equipment inside the box by the reaction residue of the fumigation reagent, and also reduces the cleaning process of the test device after the test, which is more convenient to use.

The above is only an embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural transformations made by using the description of the present invention and the contents of the accompanying drawings, or directly or indirectly used in other related technical fields, all include Within the scope of patent protection of the present invention.

Claims (10)

1. The fumigating-resistant testing device for the granary equipment is characterized by comprising a testing box, wherein the testing box comprises a box body with an opening at one end and a cover body in sealing fit with the box body, and the box body and the cover body are enclosed to form a closed space for placing tested equipment and fumigating reagents; the device comprises a test box, a box body, a box wall, a hole cover, a box cover and a cover, wherein the test box is provided with a delivery hole for delivering a fumigation reagent, the delivery hole is far smaller than the size of an opening of the box body, a placing box which corresponds to the delivery hole and is used for containing the fumigation reagent is arranged in the test box, the box wall of the placing box is provided with a gas diffusion hole for diffusing the fumigation gas obtained by the fumigation reagent into the box body, and the hole cover is assembled at the delivery hole and is in sealing fit with the delivery hole; the testing device further comprises a testing monitoring system for monitoring the testing environment information in the box body.

2. The fumigating-resistance testing device of claim 1 further comprising a blocking mechanism for blocking and opening the gas diffusion holes.

3. The fumigating-resistant testing device of granary equipment of claim 2, wherein the placement box has a cylindrical structure with one end open and one end closed, the open end of the placement box corresponds to the putting hole, and the placement box is fixedly connected with the test box; the hole cover is in sealing fit with the plugging mechanism, the plugging mechanism comprises a circular ring used for rotating operation and a plugging piece which is arranged on the circular ring, extends towards the inside of the box body and is assembled in a rotary fit with the side wall of the placement box, and the circular ring is in sealing fit with the hole cover; the blocking piece comprises a continuous cylinder part and an extension part, wherein the extension part is used for covering and blocking the gas diffusion holes when the blocking piece rotates to a set position, and the cylinder part and the circular ring are integrally arranged.

4. The fumigating-resistant testing device of granary equipment according to claim 2 or 3, wherein the test monitoring system comprises a detection sensor for monitoring the test environment information in the box body, a data acquisition module connected with the output end of the detection sensor, and a data transmission module connected with the output end of the data acquisition module, and the output end of the data transmission module is used for being communicated and interconnected with a monitoring terminal; the detection sensor comprises a gas sensor which is arranged inside the box body and used for detecting the concentration value of the fumigation gas.

5. The fumigating-resistance testing device of claim 4 wherein the detection sensor further comprises a temperature sensor disposed within the housing to detect a temperature value within the housing and/or a humidity sensor to detect a relative humidity value within the housing, the output of the temperature sensor and/or the humidity sensor being connected to the data acquisition module; the test monitoring system further comprises a monitoring display module which is electrically connected with the data acquisition module and used for displaying the concentration value of the fumigation gas, the temperature value and/or the relative humidity value in real time.

6. The fumigating-resistant testing device of granary equipment of claim 5, further comprising a temperature control mechanism for regulating the temperature inside the test box and/or a humidity control mechanism for regulating the humidity inside the test box.

7. The fumigating-resistance testing device of granary equipment of claim 6, wherein the fumigating gas is phosphine gas, and the concentration of phosphine gas in the closed space is 500mL/m or more ³ 。

8. A method for testing a fumigating-resistant testing device of granary equipment, which is characterized by comprising the following steps:

placing the tested equipment into a box body of the test box, putting fumigation reagent into the placing box from the putting hole, and sealing the box body;

starting a test, and monitoring the test environment information in the box body in real time through a test monitoring system;

after the set test time is reached, opening a cover body of the test box to ventilate and disperse air;

and after the concentration of the fumigation gas is reduced to be within the safe concentration range, the tested equipment is taken out for detection, and whether the performance parameters of the tested equipment meet the set index requirements is checked.

9. The method for testing the fumigation resistance of granary equipment according to claim 8, wherein the fumigation reagent is aluminum phosphide, the fumigation gas is phosphine gas, and the concentration of the phosphine gas in the test process is 500mL/m or more ³ The set test time is 5-15 days; when the concentration of phosphine gas in the test process can not meet the test requirement and aluminum phosphide needs to be added, firstly, the plugging mechanism is operated to isolate the placing box from the box body in an air flow mode, then the aluminum phosphide with the set dosage to be added is put into the placing box from the putting hole, then the hole cover is in sealing fit with the putting hole, and then the plugging mechanism is operated to realize air flow communication between the placing box and the box body, so that the aluminum phosphide is added.

10. The fumigating-resistant test method of granary equipment according to claim 8 or 9, wherein the test environment information in the box body is detected by a detection sensor, the output end of the detection sensor is connected with a monitoring terminal by a data acquisition module and a data transmission module, and the real-time monitoring process is as follows:

the monitoring terminal sends a signal acquisition instruction to the data transmission module, and the data transmission module transmits the signal acquisition instruction to the data acquisition module;

after the data acquisition module receives the signal acquisition instruction, acquiring a test environment signal sensed by the detection sensor, and transmitting the acquired test environment signal to a monitoring terminal through the data transmission module by the data acquisition module;

and the monitoring terminal analyzes the acquired test environment signals to obtain corresponding test environment data.

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