A food sample pretreatment device for food safety detection

Abstract

The application discloses a food sample pretreatment device for food safety detection, and belongs to the technical field of sample treatment. The device is used for solving the problems of inconvenient installation and dismounting, poor sealing and drainage and exhaust of existing devices. The container of the device is made of transparent acrylic plate, the top end is threadedly connected with a top cover, and the top cover is provided with a communicating pipe. First and second porous support plates are arranged in the container to form a sample containing gap, and a limiting ring, a positioning ring and a pressing ring are cooperatively fixed. The container is provided with a communicating groove and a sealing assembly, and a threaded ring can be rotated to control opening and closing of the communicating groove. The device can stably place the sample, is convenient to install and dismount, can flexibly adjust a use state, is convenient for drainage and exhaust, prevents foreign matters from entering, guarantees reliable detection results, and is suitable for food sample pretreatment for food safety detection.

Description

Technical Field

[0001] This utility model relates to the field of sample processing technology, and in particular to a food sample pretreatment device for food safety testing. Background Technology

[0002] In the field of food safety testing, the pretreatment of food samples is a crucial step, and its effectiveness directly affects the accuracy and reliability of the test results.

[0003] The installation and disassembly processes of existing devices are relatively complex, making it inconvenient to clean and maintain the internal components. Some devices employ complex connection structures or fixing methods, requiring operators to spend a significant amount of time and effort on disassembly and reassembly when cleaning or replacing parts is needed. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies that require operators to spend a lot of time and effort on disassembly and assembly when cleaning or replacing parts, and to propose a food sample pretreatment device for food safety testing.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A food sample pretreatment device for food safety testing includes a container, the top of which is threadedly connected to a top cover for sealing the container, and a connecting pipe for supplying water or hot air into the container is fixedly connected inside the top cover.

[0007] The container is provided with a first porous support plate and a second porous support plate, and a receiving gap is formed between the first porous support plate and the second porous support plate for accommodating the food sample to be tested. A set of extrusion positioning components is provided between the container and the top cover. The extrusion positioning components are used to extrude and position the first porous support plate and the second porous support plate after the container and the top cover are connected and sealed.

[0008] The container has a water storage gap for holding cleaned water. A connecting groove is formed inside the container, which is used for draining or venting air. A sealing assembly is provided inside the container to control the opening and closing of the connecting groove, thereby adjusting the container's operating state. The sealing assembly includes a threaded groove at the bottom end that connects to the connecting groove. A threaded ring slides within the threaded groove, and a sealing cap matching the connecting groove is fixed to the top of the threaded ring. The sealing cap seals the connecting groove. Two semi-circular grooves are formed on the surface of the sealing cap, which are used for water or air discharge.

[0009] In one possible design, the extrusion positioning assembly includes an extrusion ring fixed inside the top cover, a positioning ring fixed at the top of the first porous support plate, a second porous support plate placed on the positioning ring, the positioning ring fitting against the inner wall of the container, a limit ring fixed inside the container, the first porous support plate placed on the limit ring, an extrusion gap formed between the limit ring and the extrusion ring, and the first porous support plate, the positioning ring, and the second porous support plate being extruded and fixed by the extrusion ring and the limit ring within the extrusion gap;

[0010] The process involves placing the first porous support plate on the limiting ring with the positioning ring facing upwards, then placing the second porous support plate on the positioning ring. Subsequently, the top cover is screwed on, and as the top cover and container are tightly connected, the compression ring inside the top cover moves downwards and, in conjunction with the limiting ring, compresses and fixes the first porous support plate, the positioning ring, and the second porous support plate, making installation and disassembly convenient.

[0011] In one possible design, the extrusion ring fits into the inner wall of the container.

[0012] In one possible design, a sealing gap is formed between the compression ring and the top cover, and the top of the container is provided within the sealing gap.

[0013] In one possible design, a rubber sealing ring is fixed within the sealing gap, and the rubber sealing ring is in compression contact with the top of the container.

[0014] In one possible design, the container is made of a transparent acrylic sheet.

[0015] In one possible design, a rubber plate is fixed to the top of the sealing cap, the rubber plate being used to seal the connecting groove when the sealing cap is in a sealed state.

[0016] In one possible design, four support bases are fixed to the bottom of the container, and a communicating gap is formed between the four support bases and the container to facilitate the discharge of gas.

[0017] In this application, the operator first places the first porous support plate with the positioning ring facing upwards, and then steadily places it on the pre-fixed limiting ring inside the container. The limiting ring provides stable bottom support for the first porous support plate, ensuring its fixed position inside the container. Next, the food sample to be tested is placed on the first porous support plate, and then the second porous support plate is placed on the positioning ring. The positioning ring accurately positions the second porous support plate, creating a stable accommodating gap between the first and second porous support plates, thus accommodating the food sample to be tested in the middle.

[0018] After the sample is placed, the operator screws the top cap onto the top of the container using the screw threads. As the top cap is gradually tightened, the compression ring fixed inside the top cap begins to move downwards;

[0019] The compression ring fits tightly against the inner wall of the container, and as it moves downwards, the compression gap between it and the limiting ring gradually narrows. When the top cover is fully tightened, achieving a seal with the container, the compression ring, in conjunction with the limiting ring, applies uniform compressive force to the first porous support plate, the positioning ring, and the second porous support plate within the compression gap, firmly pressing and fixing them together. This compression fixing method not only ensures the stability of the sample during processing but also makes installation and disassembly simple and quick, facilitating cleaning and maintenance of the device.

[0020] By rotating the threaded ring, the threaded ring causes the sealing cover to move up and down. This up-and-down movement of the sealing cover connects the semi-circular groove and the receiving gap, allowing water or gas in the receiving gap to drain out through the two semi-circular grooves.

[0021] Beneficial effects: In this utility model, the food sample pretreatment device for food safety testing, by setting a first porous support plate and a second porous support plate and forming an accommodating gap between them, can stably place the food sample to be tested, prevent the sample from falling off, and ensure the pretreatment effect.

[0022] In this utility model, the food sample pretreatment device for food safety testing adopts a compression positioning component. Through the cooperation of the compression ring and the limiting ring, the first porous support plate, the positioning ring and the second porous support plate are compressed and fixed. The device is easy to install and disassemble, and it is convenient to clean and maintain the inside of the device.

[0023] In this invention, the sealing assembly allows for flexible adjustment of the container's usage status. Rotating the threaded ring moves the sealing cap, controlling the opening and closing of the connecting groove. When drainage or venting is required, the sealing cap is opened, allowing treated water or gas to drain through the connecting groove and the semi-circular groove. When drainage or venting is not needed, the sealing cap and rubber plate reliably seal the connecting groove, preventing external impurities from entering the container, avoiding sample contamination, and ensuring the reliability of test results. Attached Figure Description

[0024] Figure 1 This is a front perspective three-dimensional schematic diagram of a food sample pretreatment device for food safety testing proposed in this utility model;

[0025] Figure 2 This is a bottom-view perspective view of a food sample pretreatment device for food safety testing proposed in this utility model.

[0026] Figure 3This is a cross-sectional schematic diagram of a food sample pretreatment device for food safety testing proposed in this utility model.

[0027] Figure 4 This is a cross-sectional schematic diagram of a food sample pretreatment device for food safety testing proposed in this utility model.

[0028] In the diagram: 1. Container; 2. Top cover; 3. Connecting pipe; 4. Connecting groove; 5. Limiting ring; 6. Positioning ring; 7. First porous support plate; 8. Second porous support plate; 9. Rubber sealing ring; 10. Extrusion ring; 11. Threaded groove; 12. Threaded ring; 13. Sealing cap; 14. Semicircular groove; 15. Rubber plate; 16. Support base. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0030] In one embodiment: Refer to Figures 1-4 A food sample pretreatment device for food safety testing, applied in the field of sample processing technology, includes a container 1 made of transparent acrylic sheet, which facilitates observation of the interior of the container 1. The top of the container 1 has an external thread, and a top cover 2 has an internal thread that matches the external thread on the top of the container 1, achieving a seal between the top cover 2 and the container 1 through the threaded connection. A connecting pipe 3 is fixedly connected inside the top cover 2, penetrating the top cover 2, and can be used to deliver water or hot air into the container 1 to meet different testing needs.

[0031] The container 1 contains a first porous support plate 7 and a second porous support plate 8, forming an accommodating gap for placing the food sample to be tested. A positioning ring 6 is fixed to the top of the first porous support plate 7, the outer diameter of which matches the inner diameter of the container 1, and the positioning ring 6 fits snugly against the inner wall of the container 1. A limiting ring 5 is also fixed inside the container 1, located below the first porous support plate 7, with the first porous support plate 7 resting on the limiting ring 5.

[0032] A compression ring 10 is fixed inside the top cover 2. The compression ring 10 fits against the inner wall of the container 1, and a sealing gap is formed between the compression ring 10 and the top cover 2. The top of the container 1 is located within the sealing gap, and a rubber sealing ring 9 is fixed within the sealing gap. When the top cover 2 is connected to the container 1, the rubber sealing ring 9 and the top of the container 1 are pressed together, enhancing the sealing effect. A compression gap is formed between the limiting ring 5 and the compression ring 10. The first porous support plate 7, the positioning ring 6, and the second porous support plate 8 are located within the compression gap.

[0033] During installation, place the first porous support plate 7 on the limiting ring 5 with the positioning ring 6 facing upwards, and then place the second porous support plate 8 on the positioning ring 6. Then, turn the top cover 2. As the top cover 2 and the container 1 are tightly connected, the compression ring 10 inside the top cover 2 moves downwards and, together with the limiting ring 5, compresses and fixes the first porous support plate 7, the positioning ring 6, and the second porous support plate 8. Installation and disassembly are convenient.

[0034] A water storage gap is provided inside the container 1, and a connecting groove 4 is formed inside the container 1, which is used for drainage or venting. A sealing assembly is provided inside the container 1, including a threaded groove 11 at the bottom of the container 1 and connected to the connecting groove 4. A threaded ring 12 is slidably disposed in the threaded groove 11, and a sealing cap 13 matching the connecting groove 4 is fixed to the top of the threaded ring 12. The sealing cap 13 is used to seal the connecting groove 4, and two semi-circular grooves 14 are formed on the surface of the sealing cap 13 for water or air discharge. A rubber plate 15 is fixed to the top of the sealing cap 13. When the sealing cap 13 is sealed, the rubber plate 15 fits against the connecting groove 4 for sealing. Four support seats 16 are fixed to the bottom of the container 1, forming a connecting gap between the four support seats 16 and the container 1 to facilitate gas discharge.

[0035] In another embodiment: Reference Figures 1-4 An improvement based on Example 1: After the connecting groove 4 is sealed, water can be stored in the container 1, and the sample cup to be tested is immersed in the liquid. At this time, the shaking device can be used for soaking and washing.

[0036] First, place the sample to be cleaned onto the first porous support plate 7, with the positioning ring 6 facing upwards, and place the first porous support plate 7 onto the limiting ring 5. Then, place the second porous support plate 8 onto the positioning ring 6. Next, screw the top cover 2. As the top cover 2 and container 1 are tightly connected, the compression ring 10 inside the top cover 2 moves downwards and, together with the limiting ring 5, compresses and fixes the first porous support plate 7, the positioning ring 6, and the second porous support plate 8. Water is injected into container 1 through the connecting pipe 3. After cleaning, the water is discharged through the connecting groove 4. Then, the connecting pipe 3 is connected to the heat source pipe. The heat source can be produced by a heat pump.

[0037] The accompanying drawings in this application are for illustrative purposes only. The dimensions and shapes of the components shown are not actual limitations but are merely schematic representations. In actual implementation, the components can be reasonably configured and adjusted according to specific needs and actual conditions.

[0038] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A food sample pretreatment device for food safety testing, characterized in that, include: The container (1) has a top cover (2) threadedly connected to its top end for sealing the container (1), and a connecting pipe (3) for conveying water or hot air into the container (1) is fixedly connected inside the top cover (2). The container (1) is provided with a first porous support plate (7) and a second porous support plate (8). A accommodating gap for accommodating the food sample to be tested is formed between the first porous support plate (7) and the second porous support plate (8). A set of extrusion positioning components is provided between the container (1) and the top cover (2). The extrusion positioning components are used to extrude and position the first porous support plate (7) and the second porous support plate (8) after the container (1) and the top cover (2) are connected and sealed. The container (1) is provided with a water storage gap for holding clean water. The container (1) is provided with a connecting groove (4) connected to the water storage gap. The connecting groove (4) is used for draining or venting. The container (1) is provided with a set of sealing components. The sealing components are used to control the opening and closing of the connecting groove (4) to adjust the usage state of the container (1). The sealing components include a threaded groove (11) opened at the bottom of the container (1) and connected to the connecting groove (4). A threaded ring (12) slides in the threaded groove (11). A sealing cap (13) matching the connecting groove (4) is fixed at the top of the threaded ring (12). The sealing cap (13) is used to seal the connecting groove (4). Two semi-circular grooves (14) are opened on the surface of the sealing cap (13). The two semi-circular grooves (14) are used for water or air discharge.

2. The food sample pretreatment device for food safety testing according to claim 1, characterized in that, The extrusion positioning assembly includes an extrusion ring (10) fixed inside the top cover (2), a positioning ring (6) fixed at the top of the first porous support plate (7), and a second porous support plate (8) placed on the positioning ring (6). The positioning ring (6) is in contact with the inner wall of the container (1). A limiting ring (5) is fixed inside the container (1). The first porous support plate (7) is placed on the limiting ring (5). An extrusion gap is formed between the limiting ring (5) and the extrusion ring (10). The first porous support plate (7), the positioning ring (6), and the second porous support plate (8) are located in the extrusion gap and are extruded and fixed by the extrusion ring (10) and the limiting ring (5). The first porous support plate (7) is placed on the limiting ring (5) with the positioning ring (6) facing upwards, and the second porous support plate (8) is placed on the positioning ring (6). Then, the top cover (2) is turned. As the top cover (2) and the container (1) are tightly connected, the compression ring (10) inside the top cover (2) moves downwards and, together with the limiting ring (5), compresses and fixes the first porous support plate (7), the positioning ring (6), and the second porous support plate (8). The installation and disassembly are convenient.

3. The food sample pretreatment device for food safety testing according to claim 2, characterized in that, The extrusion ring (10) and the inner wall of the container (1) are in contact.

4. A food sample pretreatment device for food safety testing according to claim 2, characterized in that, A sealing gap is formed between the compression ring (10) and the top cover (2), and the top of the container (1) is located within the sealing gap.

5. A food sample pretreatment device for food safety testing according to claim 4, characterized in that, A rubber sealing ring (9) is fixed inside the sealing gap, and the rubber sealing ring (9) and the top of the container (1) are in contact by compression.

6. A food sample pretreatment device for food safety testing according to claim 1, characterized in that, The container (1) is made of transparent acrylic sheet.

7. A food sample pretreatment device for food safety testing according to claim 1, characterized in that, A rubber plate (15) is fixed to the top of the sealing cover (13), and the rubber plate (15) is used to seal the connecting groove (4) when the sealing cover (13) is in a sealed state.

8. A food sample pretreatment device for food safety testing according to claim 1, characterized in that, The bottom of the container (1) is fixed with four support seats (16), and a communication gap is formed between the four support seats (16) and the container (1), which is used to facilitate the discharge of gas.

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