A nitrogen concentration detection device for food storage warehouse

Abstract

The present invention discloses a nitrogen concentration detection device for a food storage warehouse, comprising a plurality of vacuum pumps and vacuum pipes placed at different positions of the food storage warehouse, the vacuum pumps being connected to the vacuum pipes, the other end of the vacuum pipes being provided with a nitrogen concentration detector connected thereto, a plurality of detachable air bags being provided inside the vacuum pipes, the air bags being connected to each other, a baffle being provided inside the vacuum pipes, one of the air bags being connected to the baffle, a through groove being provided on the vacuum pipes, a shielding mechanism for shielding the air bags and the through groove being provided on the surface of the vacuum pipes, a plurality of fixing mechanisms being provided on the inner wall of the vacuum pipes and the shielding mechanism, the device can detect the nitrogen concentration in the food storage warehouse and collect the nitrogen concentration at different positions of the food storage warehouse as required, thereby improving the detection accuracy.

Description

Technical Field

[0001] The invention relates to a nitrogen detection device, in particular to a nitrogen concentration detection device used in a food storage warehouse. Background Art

[0002] When storing food for a long time, the food storage warehouse needs to maintain a high nitrogen concentration in the food storage warehouse at all times, so as to effectively reduce the deterioration of food under the oxidation of oxygen, thereby effectively ensuring the freshness of the food, effectively reducing the loss rate of food, and avoiding excessively high operating costs of the food storage warehouse. It is necessary to detect the nitrogen concentration in the food storage warehouse at different time periods. The existing technology often uses multiple nitrogen collection barrels for separate collection. Not only does it require a larger nitrogen collection barrel, but it is also heavy and difficult to transfer. In order to facilitate the batch transfer and detection of the nitrogen collected in each time period, it is necessary to use a lightweight nitrogen collection container for collection. However, during the collection process, the lightweight nitrogen collection container is prone to shaking back and forth due to the impact of the airflow, which can easily cause damage to the nitrogen collection container. Summary of the invention

[0003] In view of the above-mentioned existing problems, the technical problem to be solved by the present invention is to provide a nitrogen concentration detection device for food storage warehouses that can effectively detect the nitrogen concentration in a food storage warehouse and collect the nitrogen concentration at different locations of the food storage warehouse according to actual needs, while also being able to collect and subsequently detect nitrogen in different time periods, and easily disassemble and transport the nitrogen collection container, thereby reducing the damage rate of the nitrogen collection container.

[0004] The present invention provides a nitrogen concentration detection device for a food storage warehouse, comprising a plurality of vacuum pumps and vacuum pipes placed at different positions in the food storage warehouse, the vacuum pumps being connected to the vacuum pipes, the other end of the vacuum pipes being provided with a nitrogen concentration detector connected thereto, a plurality of detachable air bags being provided inside the vacuum pipes, the air bags being connected to each other, a baffle being provided inside the vacuum pipes, one of the air bags being connected to the baffle, a through groove being provided on the vacuum pipes, a shielding mechanism for shielding the air bags and the through groove being provided on the surface of the vacuum pipes, a plurality of fixing mechanisms being provided on the inner wall of the vacuum pipes and the shielding mechanism, the fixing mechanisms comprising a first annular magnet, a spring, a second annular magnet, a first suction cup and a top seal A hollow tube, the first annular magnet is connected to the shielding mechanism, one end of the spring passes through the first annular magnet and is connected to the shielding mechanism, the first suction cup is connected to the bottom of the hollow tube, the other end of the spring passes through the second annular magnet and is connected to the top of the hollow tube, a second suction cup is provided in the first suction cup, a first telescopic mechanism is provided on the top of the first suction cup, a fixed end of the first telescopic mechanism is fixedly connected to the inner wall of the hollow tube, a third suction cup is provided in the second suction cup, a second telescopic mechanism is provided on the top of the third suction cup, the second telescopic mechanism is located in the first telescopic mechanism, the second telescopic mechanism is fixedly connected to the first telescopic mechanism, and the first telescopic mechanism, the second telescopic mechanism, the vacuum pump and the nitrogen concentration detector are all electrically connected to an external power supply.

[0005] Furthermore, a pressure gauge is provided on the air extraction pipeline.

[0006] Furthermore, a filter is provided on the air extraction pipeline.

[0007] Furthermore, it also includes a box body for containing desiccant, and the box body is arranged on the exhaust pipe.

[0008] Furthermore, it also includes a touch screen and a controller, a solenoid valve is provided on the air exhaust pipe, the controller is connected to the touch screen signal, the controller is connected to the solenoid valve signal, the nitrogen concentration detector is connected to the touch screen signal, the first telescopic mechanism and the second telescopic mechanism are both connected to the controller signal, the touch screen and the controller are both electrically connected to an external power supply, and also includes a mobile terminal and a communication module, the communication module is connected to the controller signal, and the mobile terminal is connected to the communication module signal.

[0009] Further, the first telescopic mechanism includes a first electric telescopic rod and a hollow tube, the first electric telescopic rod is fixedly connected to the hollow tube, the hollow tube passes through the first suction cup and is fixedly connected to the second suction cup, the second telescopic mechanism includes a second electric telescopic rod, the fixed end of the second electric telescopic rod is fixedly connected to the inner wall of the hollow tube, the telescopic end of the second electric telescopic rod passes through the second suction cup and is fixedly connected to the third suction cup, and air pressure sensors are provided inside the first suction cup, the second suction cup and the third suction cup, the air pressure sensor, the first electric telescopic rod and the second electric telescopic rod are all electrically connected to an external power supply, and the air pressure sensor, the first electric telescopic rod and the second electric telescopic rod are all connected to the controller signal.

[0010] Furthermore, the shielding mechanism includes a cover plate with a convex cross-section, the cover plate is fixedly connected to the spring and the first annular magnet respectively, the air inlet end of the airbag is provided with a one-way valve for preventing gas backflow, the air outlet end of the airbag is provided with a control valve, and adjacent airbags are interconnected.

[0011] The beneficial effects of the present invention are:

[0012] The nitrogen concentration detection device for food storage warehouse of the present invention can collect and detect the gas at different positions of the warehouse through the cooperation between the vacuum pump, the vacuum pipeline and the nitrogen concentration detector when the nitrogen concentration needs to be detected. When the nitrogen needs to be sampled in different time periods, the nitrogen is collected by the air bag in the second pipeline. When the air bag is inflated, the air bag will gradually become larger under the action of inflation. When the air bag is inflated to a certain extent, the surface of the air bag will be attached to and adsorbed to the first suction cup, thereby avoiding the air bag from being inflated. During the process, the airbag is impacted by the airflow and shakes back and forth, thereby reducing the problem that the airbag is easy to rupture under the back and forth shaking. Since the surface of the airbag will be stretched in the process of gradually inflating and becoming larger, and the curvature of the airbag surface will also change as the airbag is inflated, the first suction cup is separated from the airbag. Since the airbag will squeeze the first suction cup after expansion, the first suction cup and the hollow tube will compress the spring together, so that the first annular magnet and the second annular magnet are attracted to each other, thereby making the first suction cup away from the airbag, and through the extension of the first telescopic mechanism. , the second suction cup can be made to absorb the airbag. Since the second suction cup is smaller than the first suction cup, the airbag can be effectively fixed. When the airbag continues to inflate, the surface of the airbag is further expanded, so that the second suction cup is separated from the airbag. Then the first telescopic mechanism can be contracted, and the third suction cup can be made to absorb the airbag through the extension of the second telescopic mechanism, so that the airbag can be effectively fixed. By using this device, nitrogen of different time periods can be flushed into different airbags, and then the shielding mechanism can be opened. The airbag is then taken out through the through groove to facilitate subsequent selection and corresponding testing. In addition, the alternating adsorption of the airbag by the first suction cup, the second suction cup and the third suction cup can not only prevent the airbag from shaking back and forth and being damaged, but also the first suction cup, the second suction cup or the third suction cup can alternately adsorb the airbag with a gradually increasing volume, thereby preventing the airbag from rupturing and leaking due to relative movement between the airbag and the first suction cup, the second suction cup or the third suction cup and friction with the surface of the airbag. The adsorption effect is good, and the airbag is easy to disassemble and transport, thereby reducing the damage rate of the airbag. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only preferred embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0014] Figure 1 This is an overall structural diagram of a nitrogen concentration detection device for a food storage warehouse according to the present invention;

[0015] Figure 2 It is a cross-sectional view of a partial structure of a nitrogen concentration detection device for a food storage warehouse according to the present invention;

[0016] Figure 3 A partial cross-sectional view of a hollow tube of a nitrogen concentration detection device for a food storage warehouse according to the present invention;

[0017] Figure 4 The present invention is a partial cross-sectional view of a hollow tube of a nitrogen concentration detection device for a food storage warehouse.

[0018] In the figure, 1 is an air pump, 2 is an air extraction pipeline, 3 is a nitrogen concentration detector, 4 is an air bag, 5 is a baffle, 6 is a through groove, 7 is a first annular magnet, 8 is a spring, 9 is a second annular magnet, 10 is a first suction cup, 11 is a hollow tube, 12 is a second suction cup, 13 is a third suction cup, 14 is a pressure gauge, 15 is a filter, 16 is a box body, 17 is a touch screen, 18 is a controller, 19 is a solenoid valve, 20 is a mobile terminal, 21 is a communication module, 22 is a first electric telescopic rod, 23 is a hollow tube, 24 is a second electric telescopic rod, 25 is an air pressure sensor, 26 is a cover plate, 27 is a one-way valve, and 28 is a control valve. DETAILED DESCRIPTION

[0019] In order to better understand the technical content of the present invention, specific embodiments are provided below, and the present invention is further described in conjunction with the accompanying drawings.

[0020] See also Figures 1 to 4The present invention provides a nitrogen concentration detection device for a food storage warehouse, comprising a plurality of vacuum pumps 1 and vacuum pipes 2 placed at different positions in the food storage warehouse, wherein the vacuum pumps 1 are connected to the vacuum pipes 2, and the other end of the vacuum pipes 2 is provided with a nitrogen concentration detector 3 connected thereto, wherein a plurality of detachable air bags 4 are provided inside the vacuum pipes 2, and the air bags 4 are connected to each other, wherein a baffle 5 is provided inside the vacuum pipes 2, wherein one of the air bags 4 is connected to the baffle 5, wherein a through groove 6 is provided on the vacuum pipes 2, and a shielding mechanism for shielding the air bags 4 and the through groove 6 is provided on the surface of the vacuum pipes 2, and a plurality of fixing mechanisms are provided on the inner wall of the vacuum pipes 2 and the shielding mechanism, wherein the nitrogen concentration detection device 3 is provided thereto ... The fixing mechanism includes a first annular magnet 7, a spring 8, a second annular magnet 9, a first suction cup 10 and a hollow tube 11 with a top seal, wherein the first annular magnet 7 is connected to the shielding mechanism, one end of the spring 8 passes through the first annular magnet 7 and is connected to the shielding mechanism, the first suction cup 10 is connected to the bottom of the hollow tube 11, the other end of the spring 8 passes through the second annular magnet 9 and is connected to the top of the hollow tube 11, a second suction cup 12 is provided in the first suction cup 10, a first telescopic mechanism is provided on the top of the first suction cup 10, a fixed end of the first telescopic mechanism is fixedly connected to the inner wall of the hollow tube 11, a third suction cup 13 is provided in the second suction cup 12, a second telescopic mechanism is provided on the top of the third suction cup 13, and the The second telescopic mechanism is located in the first telescopic mechanism, and the second telescopic mechanism is fixedly connected to the first telescopic mechanism. The first telescopic mechanism, the second telescopic mechanism, the vacuum pump 1 and the nitrogen concentration detector 3 are all electrically connected to an external power supply. When it is necessary to detect the nitrogen concentration, the gas at different positions of the warehouse can be collected and detected through the cooperation between the vacuum pump 1, the vacuum pipeline 2 and the nitrogen concentration detector 3. When it is necessary to sample nitrogen at different time periods, the nitrogen is collected through the airbag 4 in the second pipeline. When the airbag 4 is inflated, the airbag 4 will gradually become larger under the action of inflation. When the airbag 4 is inflated to a certain extent, the surface of the airbag 4 will contact with the first suction cup 1. 0 are attached and adsorbed together, so as to avoid the airbag 4 from shaking back and forth due to the impact of airflow during the inflation process, and reduce the problem of the airbag 4 being easy to rupture under the back and forth shaking. Since the surface of the airbag 4 will be stretched in the process of gradually inflating and becoming larger, and the curvature of the surface of the airbag 4 will also change as the airbag 4 is inflated, the first suction cup 10 is separated from the airbag 4. Since the airbag 4 will squeeze the first suction cup 10 after expansion, the first suction cup 10 and the hollow tube 11 will compress the spring 8 together, so that the first annular magnet 7 and the second annular magnet 9 are attracted to each other, and then the first suction cup 10 is away from the airbag 4, and through the extension of the first telescopic mechanism,The second suction cup 12 can be made to absorb the airbag 4. Since the second suction cup 12 is smaller than the first suction cup 10, the airbag 4 can be effectively fixed. When the airbag 4 continues to inflate, the surface of the airbag 4 is further expanded, so that the second suction cup 12 is separated from the airbag 4. Then the first telescopic mechanism can be contracted, and the third suction cup 13 can absorb the airbag 4 through the extension of the second telescopic mechanism, so that the airbag 4 can be effectively fixed. By using this device, nitrogen of different time periods can be flushed into different airbags 4, and then the shielding mechanism is opened, and then the airbag 4 is closed. The airbag 4 is taken out through the through slot 6, which is convenient for subsequent selection and corresponding inspection. In addition, the first suction cup 10, the second suction cup 12 and the third suction cup 13 can alternately adsorb the airbag 4, which can not only prevent the airbag 4 from shaking back and forth and being damaged, but also can alternately adsorb the airbag 4 with gradually increasing volume through the first suction cup 10, the second suction cup 12 or the third suction cup 13, so as to prevent the airbag 4 from rupturing and leaking due to relative movement between the airbag 4 and the first suction cup 10, the second suction cup 12 or the third suction cup 13 and friction with the surface of the airbag 4. The adsorption effect is good, and the airbag 4 is easy to disassemble and transport, thereby reducing the damage rate of the airbag 4.

[0021] Specifically, the air extraction pipeline 2 is further provided with a pressure gauge 14 , through which the air pressure can be monitored in real time.

[0022] Specifically, a filter 15 is provided on the air extraction pipeline 2, and impurities drawn in during the air extraction process can be filtered through the filter 15, thereby reducing the occurrence of errors in the detection process.

[0023] Specifically, it also includes a box body 16 for containing a desiccant, and the box body 16 is arranged on the exhaust pipe 2. The desiccant in the box body 16 can filter out water vapor in the gas to be detected, thereby reducing the occurrence of errors in the detection process.

[0024] Specifically, it also includes a touch screen 17 and a controller 18, a solenoid valve 19 is provided on the air extraction pipeline 2, the controller 18 is connected to the touch screen 17 by signal, the controller 18 is connected to the solenoid valve 19 by signal, the nitrogen concentration detector 3 is connected to the touch screen 17 by signal, the first telescopic mechanism and the second telescopic mechanism are both connected to the controller 18 by signal, the touch screen 17 and the controller 18 are both electrically connected to an external power supply, and also includes a mobile terminal 20 and a communication module 21, the communication module 21 is connected to the controller 18 by signal, the mobile terminal 20 is connected to the communication module 21 by signal, through the cooperation of the mobile terminal 20 and the communication module 21, the staff can quickly and remotely obtain nitrogen detection data, and at the same time, it also reduces the situation where the food storage warehouse manager falsely reports the concentration during manual detection, the staff can send the control signal to the communication module 21 according to the mobile terminal 20 or the touch screen 17, and then send the signal to the controller 18 through the communication module 21, and then control the opening or closing of the solenoid valve 19 through the controller 18.

[0025] Specifically, the first telescopic mechanism includes a first electric telescopic rod 22 and a hollow tube 23, the first electric telescopic rod 22 is fixedly connected to the hollow tube 23, the hollow tube 23 passes through the first suction cup 10 and is fixedly connected to the second suction cup 12, the second telescopic mechanism includes a second electric telescopic rod 24, the fixed end of the second electric telescopic rod 24 is fixedly connected to the inner wall of the hollow tube 23, the telescopic end of the second electric telescopic rod 24 passes through the second suction cup 12 and is fixedly connected to the third suction cup 13, the first suction cup 10, the second suction cup 12 and the third suction cup 13 are each provided with an air pressure sensor 25, the air pressure sensor 25, the first electric telescopic rod 22 and the second electric telescopic rod 24 are all electrically connected to an external power supply, and the air pressure sensor 25, the first electric telescopic rod 22 and The second electric telescopic rod 24 is connected to the controller 18 by signal. When the air pressure in the first suction cup 10 changes from a negative pressure state to a normal state, the first electric telescopic rod 22 is extended and the airbag 4 is adsorbed by the first suction cup 10 through the control of the controller 18. When the air pressure in the second suction cup 12 changes from a negative pressure state to a normal state, the first electric telescopic rod 22 is contracted and the second electric telescopic rod 24 is controlled to extend through the controller 18, so that the third suction cup 13 adsorbs the airbag 4. When the air pressure in the third suction cup 13 changes from a negative pressure state to a normal state, the second electric telescopic rod 24 is contracted through the controller 18, thereby realizing the adsorption work of the first suction cup 10, the second suction cup 12 and the third suction cup 13 on the airbag 4 in turn.

[0026] Specifically, the shielding mechanism includes a cover plate 26 with a convex cross-section, the cover plate 26 is fixedly connected to the spring 8 and the first annular magnet 7 respectively, the air inlet end of the airbag 4 is provided with a one-way valve 27 for preventing gas backflow, and the air outlet end of the airbag 4 is provided with a control valve 28. The adjacent airbags 4 are interconnected, and the through groove 6 on the second pipe can be shielded by the action of the cover plate 26. By the action of the control valve 28, when the airbag 4 away from the baffle 5 is filled with gas, the control valve 28 on the adjacent airbag 4 is controlled by the controller 18 to be closed, so that the airbags 4 are filled one by one, so that nitrogen in different time periods can be collected for subsequent detection, and the backflow of nitrogen can be avoided by the action of the one-way valve 27.

[0027] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A nitrogen concentration detection device for food storage warehouse, characterized in that: The invention comprises a plurality of vacuum pumps and vacuum pipes placed at different positions of a food storage warehouse, wherein the vacuum pumps are connected to the vacuum pipes, the other end of the vacuum pipes is provided with a nitrogen concentration detector connected thereto, a plurality of detachable air bags are provided inside the vacuum pipes, the air bags are connected to each other, a baffle is provided inside the vacuum pipes, one of the air bags is connected to the baffle, a through groove is provided on the vacuum pipes, a shielding mechanism for shielding the air bags and the through groove is provided on the surface of the vacuum pipes, a plurality of fixing mechanisms are provided on the inner wall of the vacuum pipes and the shielding mechanism, the fixing mechanisms comprise a first annular magnet, a spring, a second annular magnet, a first suction cup and a hollow tube sealed at the top, the first annular magnet and The shielding mechanism is connected, one end of the spring passes through the first annular magnet to be connected to the shielding mechanism, the first suction cup is connected to the bottom of the hollow tube, the other end of the spring passes through the second annular magnet to be connected to the top of the hollow tube, a second suction cup is arranged in the first suction cup, a first telescopic mechanism is arranged on the top of the first suction cup, a fixed end of the first telescopic mechanism is fixedly connected to the inner wall of the hollow tube, a third suction cup is arranged in the second suction cup, a second telescopic mechanism is arranged on the top of the third suction cup, the second telescopic mechanism is located in the first telescopic mechanism, the second telescopic mechanism is fixedly connected to the first telescopic mechanism, and the first telescopic mechanism, the second telescopic mechanism, the vacuum pump and the nitrogen concentration detector are all electrically connected to an external power supply.

2. A nitrogen concentration detection device for a food storage warehouse according to claim 1, characterized in that: A pressure gauge is also provided on the air extraction pipeline.

3. A nitrogen concentration detection device for a food storage warehouse according to claim 1, characterized in that: A filter is arranged on the air extraction pipeline.

4. A nitrogen concentration detection device for a food storage warehouse according to claim 1, characterized in that: It also includes a box body for containing desiccant, and the box body is arranged on the air extraction pipeline.

5. A nitrogen concentration detection device for a food storage warehouse according to claim 1, characterized in that: It also includes a touch screen and a controller, a solenoid valve is provided on the air extraction pipeline, the controller is connected to the touch screen signal, the controller is connected to the solenoid valve signal, the nitrogen concentration detector is connected to the touch screen signal, the first telescopic mechanism and the second telescopic mechanism are both connected to the controller signal, the touch screen and the controller are both electrically connected to an external power supply, and also includes a mobile terminal and a communication module, the communication module is connected to the controller signal, and the mobile terminal is connected to the communication module signal.

6. A nitrogen concentration detection device for food storage warehouse according to claim 5, characterized in that: The first telescopic mechanism includes a first electric telescopic rod and a hollow tube, the first electric telescopic rod is fixedly connected to the hollow tube, the hollow tube passes through the first suction cup and is fixedly connected to the second suction cup, the second telescopic mechanism includes a second electric telescopic rod, the fixed end of the second electric telescopic rod is fixedly connected to the inner wall of the hollow tube, the telescopic end of the second electric telescopic rod passes through the second suction cup and is fixedly connected to the third suction cup, the first suction cup, the second suction cup and the third suction cup are each provided with an air pressure sensor inside, the air pressure sensor, the first electric telescopic rod and the second electric telescopic rod are each electrically connected to an external power supply, and the air pressure sensor, the first electric telescopic rod and the second electric telescopic rod are each connected to the controller signal.

7. A nitrogen concentration detection device for a food storage warehouse according to claim 1, characterized in that: The shielding mechanism includes a cover plate with a convex cross-section, which is fixedly connected to the spring and the first annular magnet respectively. The air inlet end of the airbag is provided with a one-way valve for preventing gas backflow, and the air outlet end of the airbag is provided with a control valve. Adjacent airbags are interconnected.

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