An electronic nose device based on food detection

Abstract

The utility model discloses a kind of electronic nose equipment based on food detection, including electronic nose body, the right side of the electronic nose body is equipped with air inlet, the right side of the air inlet is provided with annular frame, the inside fixed connection of the annular frame has filter screen.The utility model is cooperated with limiting block and limiting frame, combined with the plug-in structure of insertion rod and through mouth, the quick installation and disassembly of filter screen are realized.Compared with traditional bolt fixing mode, without operating bolt one by one, greatly simplify the process of filter screen cleaning or replacement, reduce manpower and time consumption, avoid the interruption of detection work due to dismounting cumbersome, ensure that electronic nose can continuously and efficiently carry out food detection, while stable cooperation structure can also ensure that filter screen is position stable during working process, do not affect gas filtration effect, the device has the advantages of filter screen quick dismounting, convenient timely cleaning and high detection efficiency.

Description

Technical Field

[0001] This utility model relates to the field of food testing technology, specifically to an electronic nose device based on food testing. Background Technology

[0002] As an intelligent detection instrument that simulates the olfactory system of animals, the electronic nose senses and analyzes volatile odor substances through a sensor array. It can quickly and accurately identify the odor characteristics of food and is widely used in food quality testing, authenticity identification, and shelf-life assessment. In food processing enterprises, it can monitor the odor changes of products in real time during the production process to ensure stable quality. In food safety regulatory departments, it can conduct random inspections of food in the market to screen for food with quality problems.

[0003] However, existing electronic noses have obvious defects in actual operation: impurities carried by external gas easily adhere to the filter screen used for filtration. Currently, the filter screen is generally fixed in the gas channel with multiple bolts. When the filter screen needs to be frequently disassembled for cleaning or replacement, the staff has to remove the bolts one by one, which not only consumes a lot of manpower and time, but also interrupts the normal operation of the detection work. At the same time, if the filter screen is not cleaned in time, it will reduce the detection efficiency of the electronic nose.

[0004] Therefore, it is necessary to redesign and modify electronic nose devices based on food testing to effectively prevent problems such as cumbersome filter disassembly and low testing efficiency. Utility Model Content

[0005] To address the problems mentioned in the background art, the purpose of this utility model is to provide an electronic nose device for food detection, which has the advantages of quick filter removal and installation, easy and timely cleaning, and high detection efficiency.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an electronic nose device for food detection, comprising an electronic nose body, an air inlet on the right side of the electronic nose body, an annular frame on the right side of the air inlet, a filter screen fixedly connected inside the annular frame, three evenly distributed ring-shaped limiting frames fixedly connected to the right side of the electronic nose body, three evenly distributed ring-shaped limiting blocks fixedly connected to the surface of the annular frame, the limiting blocks cooperating with the limiting frames, and openings on the surfaces of the limiting blocks and the limiting frames, an air intake hood on the right side of the electronic nose body, and three evenly distributed ring-shaped insert rods fixedly connected to the inner wall of the air intake hood, the insert rods being inserted into the openings.

[0007] As a preferred embodiment of this invention, a sealing ring is fixedly connected to the left side of the annular frame, and the left side of the sealing ring is fitted with the right side of the electronic nose body.

[0008] As a preferred embodiment of this utility model, a positioning frame is fixedly connected to the right side of the electronic nose body, and the number of the positioning frames is four, and the positioning frames are fitted to the air intake hood.

[0009] As a preferred embodiment of the present invention, the front and rear sides of the right side of the electronic nose body are provided with sliding grooves, and a locking frame is slidably connected inside the sliding groove. The locking frame fits into the air intake cover. The front and rear sides of the right side of the electronic nose body are fixedly connected with a first magnet, and the two locking frames that are far apart from each other are fixedly connected with a second magnet. The magnetic poles of the first magnet and the second magnet are the same on the adjacent side.

[0010] As a preferred embodiment of this invention, both the first magnet and the second magnet have an anti-rust coating on their surfaces, and a handle is fixedly connected to the surface of the locking frame.

[0011] As a preferred embodiment of this invention, the limiting frame includes an inlet, a slide, and a tail end.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] 1. This utility model utilizes a combination of a limiting block and a limiting frame, along with an insertion structure for the rod and the port, to achieve rapid installation and removal of the filter screen. Compared to traditional bolt fixing methods, it eliminates the need to operate each bolt individually, significantly simplifying the filter screen cleaning or replacement process, reducing manpower and time consumption, and preventing interruptions in testing work due to cumbersome disassembly and assembly. This ensures that the electronic nose can continuously and efficiently perform food testing. Simultaneously, the stable fit structure guarantees that the filter screen remains in a stable position during operation, without affecting the gas filtration effect. This device boasts the advantages of rapid filter screen installation and removal, convenient and timely cleaning, and high testing efficiency.

[0014] 2. This invention effectively enhances the sealing of the air inlet by having the sealing ring on the left side of the annular frame fit snugly against the right side of the electronic nose body. This prevents unfiltered external gas from directly entering the device through the gap between the annular frame and the electronic nose body. This design ensures that all gas entering the electronic nose body is filtered by the filter screen, preventing impurities from adhering to internal components around the filter screen. This guarantees the accuracy of the detection data, reduces the impact of impurities on the device's performance, and extends the stable operating time of the device. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a front sectional view of the air intake hood structure of this utility model;

[0017] Figure 3 This is an exploded view of the annular frame and limiting frame structure of this utility model;

[0018] Figure 4 This is a schematic diagram of the air intake cover and insert rod structure of this utility model;

[0019] Figure 5 This is a schematic diagram of the right side of the limiting frame structure of this utility model;

[0020] Figure 6 This utility model Figure 2 Enlarged schematic diagram of the structure at point A in the middle.

[0021] In the diagram: 1. Electronic nose body; 2. Circular frame; 3. Filter screen; 4. Limiting block; 5. Limiting frame; 6. Inlet; 7. Air intake cover; 8. Insert rod; 9. Locking frame; 10. First magnet; 11. Second magnet; 12. Inlet; 13. Slide rail; 14. Tail end; 15. Sealing ring; 16. Positioning frame; 17. Handle. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] like Figures 1 to 6As shown, an electronic nose device for food detection includes an electronic nose body 1. An air inlet is located on the right side of the electronic nose body 1, and an annular frame 2 is located to the right of the air inlet. A filter screen 3 is fixedly connected inside the annular frame 2. Three evenly distributed ring-shaped limiting frames 5 are fixedly connected to the right side of the electronic nose body 1. Three evenly distributed ring-shaped limiting blocks 4 are fixedly connected to the surface of the annular frame 2. The limiting blocks 4 cooperate with the limiting frames 5. Both the limiting blocks 4 and the limiting frames 5 have openings 6 on their surfaces. An air intake hood 7 is located on the right side of the electronic nose body 1. Three evenly distributed ring-shaped inserts 8 are fixedly connected to the inner wall of the air intake hood 7. The inserts 8 are inserted into the openings 6. The electronic nose body 1 includes a shell, a gas sampling assembly, and a gas-sensitive sensor array. The electronic nose body 1 comprises a series of components, including a signal conditioning module, a data acquisition module, a display module, and a control system. The aforementioned electronic nose body 1 represents existing common technology and is common knowledge to those skilled in the art; therefore, it will not be described in detail here. Standard parts used in this utility model can be purchased from the market, and irregularly shaped parts can be customized according to the description and drawings. The specific connection methods for each part all employ conventional methods such as bolts, rivets, and welding, which are mature technologies in the prior art. The machinery, parts, and equipment all adopt conventional models in the prior art, and the circuit connections also employ conventional connection methods in the prior art; therefore, they will not be described in detail here. Content not described in detail in this specification belongs to existing technology known to those skilled in the art, and will not be described in detail here.

[0024] refer to Figure 3 A sealing ring 15 is fixedly connected to the left side of the annular frame 2, and the left side of the sealing ring 15 is in contact with the right side of the electronic nose body 1.

[0025] As a technical optimization of this utility model, the sealing ring 15 on the left side of the annular frame 2 is fitted to the right side of the electronic nose body 1, which effectively enhances the sealing performance at the air inlet and prevents unfiltered external gas from directly entering the device through the gap between the annular frame 2 and the electronic nose body 1. This design ensures that all gas entering the electronic nose body 1 is filtered by the filter screen 3, preventing impurities from adhering to internal components around the filter screen 3, thereby ensuring the accuracy of the detection data, reducing the impact of impurities on the device performance, and extending the stable working time of the device.

[0026] refer to Figure 1 The right side of the electronic nose body 1 is fixedly connected to a positioning frame 16. There are four positioning frames 16, and the positioning frames 16 are fitted to the air intake hood 7.

[0027] As a technical optimization of this utility model, the positioning bracket 16 on the right side of the electronic nose body 1 fits against the air intake hood 7, providing precise positioning guidance for the installation of the air intake hood 7. During installation, the positioning bracket 16 quickly assists the air intake hood 7 in finding the correct position, ensuring that the insertion rod 8 is accurately aligned and inserted into the opening 6 of the limiting block 4 and the limiting bracket 5, avoiding problems such as the insertion rod 8 failing to be smoothly inserted or not being securely fixed due to installation position deviation. This design improves the installation efficiency of the air intake hood 7, ensures the assembly accuracy of the overall structure, and enhances the stability of the equipment during operation. The surface of the air intake hood 7 is sprayed with markings, with the marked side facing upwards, thus ensuring that the insertion rod 8 accurately inserts into the opening 6 during installation. (The markings are not shown.)

[0028] refer to Figure 6 The front and rear sides of the right side of the electronic nose body 1 are provided with sliding grooves, and the locking frame 9 is slidably connected inside the sliding groove. The locking frame 9 fits against the air intake cover 7. The front and rear sides of the right side of the electronic nose body 1 are fixedly connected with a first magnet 10, and the two locking frames 9 are fixedly connected with a second magnet 11 on the side that is far away from each other. The magnetic poles of the first magnet 10 and the second magnet 11 on the adjacent side are the same.

[0029] As a technical optimization of this utility model, the locking frame 9 in the slide groove fits snugly against the air intake hood 7, and with the repulsive force of the first magnet 10 and the second magnet 11, a stable lock can be formed on the air intake hood 7. During the operation of the equipment, it can effectively prevent the air intake hood 7 from loosening due to vibration or external force, ensuring that the insertion rod 8 is always firmly inserted into the opening 6, thereby ensuring the stability of the position of the limiting block 4 and the filter screen 3. During disassembly, the fixing can be released simply by moving the locking frame 9, which is simple to operate, improves the reliability of the equipment structure, and further simplifies the operation steps of filter screen disassembly and assembly.

[0030] refer to Figure 6 The surfaces of the first magnet 10 and the second magnet 11 are both coated with an anti-rust coating, and the surface of the locking frame 9 is fixedly connected with a handle 17.

[0031] As a technical optimization of this utility model, the anti-rust coating on the surfaces of the first magnet 10 and the second magnet 11 effectively resists the corrosion of the magnets by moisture and impurities in the external environment, extends the service life of the magnets, ensures the long-term stability of their repulsive force performance, and ensures the long-lasting and reliable fixing effect of the locking frame 9. The handle 17 on the surface of the locking frame 9 provides a convenient force application point for operating the locking frame 9, making it easier and more efficient for workers to move the locking frame 9, reducing the time consumed in the operation process, and improving the overall ease of use of the equipment.

[0032] refer to Figure 3 The limiting frame 5 includes an inlet 12, a slide 13, and a tail end 14.

[0033] As a technical optimization of this utility model, the clearly designed installation process enables workers to quickly master the assembly methods of the annular frame 2, filter screen 3, and air intake hood 7. Through the sliding engagement of the limiting block 4 and the limiting frame 5, the insertion and fixing of the insertion rod 8, and the auxiliary fixing of the locking frame 9, the entire installation process is clear, simple, and can be completed without specialized tools. This not only reduces the operational difficulty for workers but also significantly shortens the time required for filter screen assembly and disassembly, reduces the interruption time of testing work, ensures that the electronic nose can quickly resume its working state, and improves overall testing efficiency.

[0034] The working principle and usage process of this utility model are as follows: When using this electronic nose device based on food detection, first, a clean filter screen 3 needs to be prepared, ensuring that the filter screen 3 is firmly fixed inside the annular frame 2. Next, align the annular frame 2 with the air inlet on the right side of the electronic nose body 1, locate the inlet 12 on the limiting frame 5, align the limiting block 4 on the surface of the annular frame 2 with the inlet 12, and then slowly move the annular frame 2 closer to the electronic nose body 1 until the sealing ring 15 on the left side of the annular frame 2 is completely in contact with the right side of the electronic nose body 1. At this time, keep the annular frame 2 in place and slowly rotate the annular frame 2 so that the limiting block 4 slides smoothly along the slide rail 13 of the limiting frame 5. Continue rotating until the limiting block 4 slides to the tail end 14 of the limiting frame 5. At this time, stop rotating and observe whether the opening 6 on the surface of the limiting block 4 and the opening 6 on the surface of the limiting frame 5 are completely overlapped. After confirming that they are overlapped, the initial installation of the annular frame 2 and the filter screen 3 is completed. Next, install the air intake cover 7. First, observe the position of the positioning bracket 16 on the right side of the electronic nose body 1. Align the air intake cover 7 with the positioning bracket 16. Then, hold the handle 17 on the surface of the locking bracket 9 and pull the two locking brackets 9 away from each other. Let the locking bracket 9 slide in the groove to a position that does not obstruct the movement of the air intake cover 7. Then, push the air intake cover 7 towards the electronic nose body 1. During the pushing process, pay attention to the insertion rod 8 on the inner wall of the air intake cover 7 to ensure that the insertion rod 8 can be accurately aligned with the previously overlapped opening 6. Continue to push the air intake cover 7 until the insertion rod 8 is fully inserted into the opening 6. At this time, the insertion rod 8 will lock the limiting block 4 to prevent the limiting block 4 from shifting in subsequent use, thereby fixing the filter screen 3.

[0035] After releasing the grip on handle 17, since the first magnet 10 and the second magnet 11 have the same magnetic poles on adjacent sides, the two locking frames 9 will automatically slide towards each other under the action of repulsion until the locking frames 9 are tightly attached to the surface of the air intake hood 7. The fixing of the air intake hood 7 is completed, and the entire device is assembled. After assembly, the electronic nose body 1 is activated. Outside air enters through the air intake hood 7, first passing through the filter screen 3 in the annular frame 2 to remove impurities, and then entering the interior of the electronic nose body 1 through the air inlet. After being processed by the internal gas sampling components, gas-sensitive sensor array, and other structures, the detection results will be displayed on the display module.

[0036] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0037] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An electronic nose device for food detection, comprising an electronic nose body (1), characterized in that: An air inlet is provided on the right side of the electronic nose body (1), and an annular frame (2) is provided on the right side of the air inlet. A filter screen (3) is fixedly connected inside the annular frame (2). Three ring-shaped and evenly distributed limiting frames (5) are fixedly connected on the right side of the electronic nose body (1). Three ring-shaped and evenly distributed limiting blocks (4) are fixedly connected on the surface of the annular frame (2). The limiting blocks (4) are used in conjunction with the limiting frames (5). Both the limiting blocks (4) and the limiting frames (5) have openings (6) on their surfaces. An air intake hood (7) is provided on the right side of the electronic nose body (1). Three ring-shaped and evenly distributed insert rods (8) are fixedly connected to the inner wall of the air intake hood (7). The insert rods (8) are inserted into the openings (6).

2. The electronic nose device for food detection according to claim 1, characterized in that: A sealing ring (15) is fixedly connected to the left side of the annular frame (2), and the left side of the sealing ring (15) is in contact with the right side of the electronic nose body (1).

3. The electronic nose device for food detection according to claim 2, characterized in that: The right side of the electronic nose body (1) is fixedly connected to a positioning frame (16), and there are four positioning frames (16). The positioning frames (16) are in contact with the air intake hood (7).

4. The electronic nose device for food detection according to claim 3, characterized in that: The electronic nose body (1) has a sliding groove on the front and rear sides of the right side, and a locking frame (9) is slidably connected inside the sliding groove. The locking frame (9) fits against the air intake hood (7). The electronic nose body (1) has a first magnet (10) fixedly connected on the front and rear sides of the right side, and a second magnet (11) is fixedly connected on the side of the two locking frames (9) that are far apart from each other. The magnetic poles of the first magnet (10) and the second magnet (11) on the adjacent side are the same.

5. An electronic nose device for food detection according to claim 4, characterized in that: The surfaces of the first magnet (10) and the second magnet (11) are both provided with an anti-rust coating, and the surface of the locking frame (9) is fixedly connected with a handle (17).

6. The electronic nose device for food detection according to claim 5, characterized in that: The limiting frame (5) includes an inlet (12), a slide (13) and a tail end (14), which are used in conjunction with the limiting block (4).

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