Sample storage device for food detection

Abstract

The invention relates to a sample storage device for food detection, and belongs to the technical field of food detection. The sample storage device for food detection comprises a heat preservation box; the heat insulation box cover is hinged to the top of the heat preservation box, and placing and taking openings which are evenly distributed are formed in the top of the heat insulation box cover; the heat preservation frame is fixedly connected to the interior of the heat preservation box; on the basis that the function of placing and taking the test tubes in batches is reserved, the design that the sealing mechanisms with the same number as the placing cavities are adopted to correspondingly seal the placing cavities is adopted, and a detector only needs to adjust the corresponding sealing mechanisms to freely and easily place and take the test tubes on the premise that other test tubes are not touched; the problem that an existing sample storage device for food detection with the self-adaptive clamping and auxiliary sample taking-out functions is prone to interfering with other stored food samples during repeated storage and taking operation, and consequently follow-up detection is interfered is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of food detection, and in particular to a sample storage device for food detection. Background Art

[0002] Food testing refers to the process of analyzing and evaluating the physical, chemical, biological and other characteristics of food using various scientific and technological means. At present, some food samples need to be stored and transported after sampling, and then transported to the testing agency for testing. Insulated boxes are currently the most common sample storage devices for food testing.

[0003] At present, a Chinese patent discloses a food testing sample preservation device (authorization announcement number is CN118545370B), which cooperates with the use of a synchronous push-and-take component, so that when a person needs to take a sample, he can push the test tube to move by opening the box cover, and remove the test tube part from the inside of the preservation box, which is convenient for the person to take the test tube from the inside of the preservation box. The person does not need to take it from the inside of the preservation box, which improves the convenience of taking the test tube. At the same time, when the person takes the test tube, the push plate moves in the opposite direction, so that the push plate is reset, which is convenient for the next sample to be taken out, thereby improving the convenience of using the sample preservation device.

[0004] According to the above reference cases, the above device adopts a structure that automatically pushes the test tube when opening the box to reduce the difficulty for the inspector to take out the test tube. In order to improve the accuracy of food testing, the inspector needs to extract multiple food samples, and put them into the incubator as soon as possible after the extraction to avoid food spoilage. However, when the inspector extracts food samples in batches, the food sample test tubes first placed in the incubator will rise and fall with the subsequent opening and closing of the incubator, which will inevitably cause the food samples to move. This may not only destroy the integrity of the food samples, but also increase the probability of the food sample test tubes contacting the outside world, increasing the adverse effects on temperature-sensitive food samples. Summary of the invention

[0005] Based on this, it is necessary to provide a sample storage device for food testing to address the problem that the existing sample storage device for food testing with adaptive clamping and auxiliary sample retrieval functions is prone to interfere with other stored food samples during multiple storage and retrieval operations, thereby interfering with subsequent testing.

[0006] A sample storage device for food testing, comprising:

[0007] Incubator;

[0008] A heat-insulating box cover, the heat-insulating box cover is hinged to the top of the heat-insulating box, and the top of the heat-insulating box cover is provided with evenly distributed access openings;

[0009] An insulation frame, the insulation frame is fixedly connected to the interior of the insulation box, and the top of the insulation frame is provided with placement cavities that are evenly distributed and aligned with the adjacent placement and removal ports;

[0010] An evenly distributed elastic positioning mechanism, the elastic positioning mechanism is installed inside the placement cavity; the elastic positioning mechanism includes a lateral positioning component, a horizontal positioning component and a locking component;

[0011] Uniformly distributed sealing mechanisms, the sealing mechanisms are installed inside the access opening, and the bottom of the sealing mechanisms is in contact with the adjacent elastic positioning mechanisms;

[0012] Furthermore, the sealing mechanism includes a sealing plate rotatably connected to the inside of the release port, the bottom of the sealing plate is in contact with the adjacent elastic positioning mechanism, the top of the sealing plate is provided with an adjustment cavity, the inside of the adjustment cavity is slidably connected with an L-shaped positioning plate, both ends of the L-shaped positioning plate pass through the adjustment cavity, and one end of the L-shaped positioning plate is clamped with the release port.

[0013] Furthermore, the lateral positioning assembly includes two first springs symmetrically fixedly connected to two relatively vertical inner walls of the placement cavity, the opposite ends of the two first springs are fixedly connected to a sliding frame slidably connected to the placement cavity, and the opposite ends of the two sliding frames are fixedly connected to an arc-shaped clamping plate;

[0014] Furthermore, the horizontal positioning assembly includes a second spring fixedly connected to the bottom wall of the placement cavity, the top of the second spring is fixedly connected to a push plate slidably connected to the placement cavity, and the surface of the push plate is fixedly connected to a vertical bar slidably connected to the placement cavity and the slide frame;

[0015] Furthermore, the locking assembly includes a first positioning block slidably connected to the inside of the placement cavity, one end of the first positioning block is fixedly connected to a second positioning block arranged on the inner side of the sliding frame, one end of the first positioning block and the second positioning block are respectively tightly attached to the sliding frame and the vertical bar, a side end of the first positioning block is provided with an oblique opening, an inner bottom wall of the oblique opening gradually rises from the first positioning block toward the second positioning block, an adjustment frame is slidably connected to the inside of the oblique opening, a cross rod slidably connected to the placement cavity is fixedly connected to the top of the adjustment frame, the top of the cross rod passes through the placement cavity and contacts with the sealing plate, and a third spring fixedly connected to the placement cavity is provided on the surface of the cross rod.

[0016] Furthermore, the interior of the heat-insulating box cover is provided with evenly distributed snap-in grooves respectively connected with the adjacent loading and unloading ports, and one end of the L-shaped positioning plate is snap-connected with the snap-in groove.

[0017] Furthermore, a fourth spring is fixedly connected between the L-shaped positioning plate and the adjustment cavity, and the fourth spring is arranged on a side of the L-shaped positioning plate facing away from the clamping groove.

[0018] Furthermore, one of the vertical inner walls of the regulating cavity is fixedly connected to a guide rod, and the fourth spring is sleeved on the surface of the guide rod.

[0019] Furthermore, a guide groove is provided on the surface of the L-shaped positioning plate, and one end of the guide rod penetrates into the interior of the guide groove.

[0020] Furthermore, the corners of the top and side ends of the arc-shaped clamping plate are rounded, and the radius of the rounded corners is smaller than the thickness of the arc-shaped clamping plate.

[0021] Furthermore, first protection pads are bonded to opposite ends of the two arc-shaped clamping plates, and the first protection pads are rubber material components.

[0022] Furthermore, a second protection pad is bonded to the top of the push plate, and the second protection pad is a rubber material component.

[0023] Furthermore, the cross-sectional shape of the top of the cross rod is an arc shape, and the surface of the cross rod is smooth.

[0024] The above-mentioned sample storage device for food testing, on the basis of retaining the function of batch placing and taking out test tubes, adopts the same number of sealing mechanisms as the placement chamber to correspond to the design of the closed placement chamber. The test personnel only need to adjust the corresponding sealing mechanism to freely and easily place and take out the test tube without touching other test tubes, so as to solve the problem that the existing sample storage device for food testing with adaptive clamping and auxiliary sample taking out functions is easy to interfere with other stored food samples during multiple storage and retrieval operations, thereby interfering with subsequent testing;

[0025] The split elastic positioning mechanism is designed. No matter whether the tester places a single test tube or a batch of test tubes, or places test tubes of different specifications, the split elastic positioning structure can lock the corresponding test tube in the placement cavity, effectively expanding the application range of the device. In addition, it can lock its own moving parts after completing the elastic locking in cooperation with the sealing mechanism, so that the test tube can be locked in the placement cavity more stably.

[0026] The optimized design of independent test tube placement and elastic sealing placement chamber is adopted. Before the test tube is placed in the placement chamber and after the placement chamber is sealed by the sealing mechanism, it can block the outside air and temperature, so that the internal temperature and environment of the incubator are in the preset state, so that temperature-sensitive food samples can be stored in a stable environment, thereby reducing the variables of food sample storage. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the present invention or the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0028] Figure 1 It is a structural schematic diagram of the overall structure of the present invention;

[0029] Figure 2 A schematic diagram of a state where one of the sealing mechanisms in the present invention is unlocked;

[0030] Figure 3 This is a schematic diagram of the state after the heat insulation box cover is unlocked in the present invention;

[0031] Figure 4 It is a schematic diagram of a partial structure of the present invention;

[0032] Figure 5 It is a structural schematic diagram of the elastic positioning mechanism in the present invention;

[0033] Figure 6 for Figure 4 Schematic cross-sectional view along the AA direction;

[0034] Figure 7 for Figure 4 A cross-sectional schematic diagram along the BB direction;

[0035] Figure 8 for Figure 7 The enlarged view of point D in the middle;

[0036] Fig. 9 for Figure 4 Schematic cross-sectional view along CC direction;

[0037] Fig.10 Fig. 9 Enlarged view of point E in the middle.

[0038] Reference numerals:

[0039] 100, thermal insulation box; 200, thermal insulation box cover; 210, loading and unloading port; 220, snap-in groove; 300, thermal insulation frame; 310, placement cavity; 400, elastic positioning mechanism; 410, lateral positioning assembly; 411, first spring; 412, sliding frame; 413, arc-shaped clamping plate; 414, first protection pad; 420, horizontal positioning assembly; 421, second spring; 422, push plate; 423, vertical bar; 424, second protection pad; 430, locking assembly; 431, first positioning block; 4311, oblique opening; 432, second positioning block; 433, adjustment frame; 434, cross rod; 435, third spring; 500, sealing mechanism; 510, sealing plate; 511, adjustment cavity; 520, L-shaped positioning plate; 521, guide groove; 530, fourth spring; 540, guide rod. DETAILED DESCRIPTION

[0040] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] It should be noted that when a component is referred to as being "fixed to" or "disposed on" another component, it may be directly on the other component or there may be a central component. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may be a central component at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in the specification of the present invention are for illustrative purposes only and do not represent the only implementation method.

[0042] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0043] In the present invention, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first feature is directly in contact with the second feature, or the first feature and the second feature are indirectly in contact through an intermediate medium. Moreover, a first feature being “above”, “above” or “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below” or “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0044] Unless otherwise defined, all technical and scientific terms used in the specification of the present invention have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used in the specification of the present invention includes any and all combinations of one or more related listed items.

[0045] Combine the following Figure 1 - Fig.10 The sample storage device for food testing of the present invention is described.

[0046] In one embodiment, a sample storage device for food testing includes: an insulation box 100, an insulation box cover 200 and an insulation frame 300. The side end of the insulation box 100 is provided with a socket, and a placement box is inserted into the socket. The user can put a refrigerant such as an ice bag or a dry ice bag into the placement box so that the refrigerant reduces the temperature inside the insulation box 100. The placement box is fixed in the insulation box 100 by a twist lock. The insulation box cover 200 is hinged to the top of the insulation box 100. The insulation box cover 200 is fixed to the top of the insulation box 100 by a lock. The top of the insulation box cover 200 is provided with evenly distributed release ports 210; the insulation frame 300 is fixedly connected to the inside of the insulation box 100, and the top of the insulation frame 300 is provided with evenly distributed placement cavities 310 aligned with adjacent release ports 210. The inside of the placement cavities 310 A transparent elastic silicone membrane petal is fixedly connected and distributed in an annular shape and is always arranged above the arc-shaped clamping plate 413. The transparent elastic silicone membrane petal is fan-shaped, and two adjacent elastic membrane petals are in contact with each other. The transparent elastic silicone membrane petals inside the same placement cavity 310 together form a cone cylinder. The transparent elastic silicone membrane petals can form a heat-insulating sealing structure to prevent the cold air inside the insulation box 100 from escaping from the unused placement cavity 310, thereby improving the insulation effect inside the insulation box 100. The bottom of the insulation frame 300 is provided with evenly distributed vents that are respectively connected to the adjacent placement cavities 310; evenly distributed elastic positioning mechanisms 400, the elastic positioning mechanisms 400 are installed inside the placement cavity 310; the elastic positioning mechanisms 400 include a lateral positioning component 410, a horizontal positioning component 420 and a locking component 430;

[0047] like Figure 5 , Figure 6 , Figure 7 and Fig.10 As shown, the lateral positioning assembly 410 includes two first springs 411 symmetrically fixedly connected to two relatively vertical inner walls of the placement cavity 310, the opposite ends of the two first springs 411 are fixedly connected to a sliding frame 412 slidably connected to the placement cavity 310, and the opposite ends of the two sliding frames 412 are fixedly connected to an arc-shaped clamping plate 413; the corners of the top and side ends of the arc-shaped clamping plate 413 are rounded, and the radius of the rounded corners is smaller than the thickness of the arc-shaped clamping plate 413. The test tube can be easily pushed against the movable arc-shaped clamping plate 413 to ensure that the test tube can be effectively stuck between the two arc-shaped clamping plates 413; the opposite ends of the two arc-shaped clamping plates 413 are bonded with first protective pads 414, and the first protective pads 414 are made of rubber material, which can not only reduce the probability of the arc-shaped clamping plates 413 scratching and damaging the test tube, but also increase the friction of the test tube movement, thereby locking the test tube more stably in the placement cavity 310.

[0048] When the inspector needs to put the test tube with the food sample into the placement cavity 310, the inspector only needs to place the bottom of the test tube on the arc surface between the two arc-shaped clamping plates 413, and then press down the test tube. The test tube pushes the two arc-shaped clamping plates 413 towards each other at the same time, and the arc-shaped clamping plates 413 drive the sliding frame 412 to squeeze the first spring 411 until the side walls of the test tube at the corresponding height are tightly attached to the arc surfaces of the arc-shaped clamping plates 413 at the same time. At this time, the first spring 411 presses the arc-shaped clamping plates 413 against the side walls of the test tube through the sliding frame 412, thereby locking the test tube in the placement cavity 310.

[0049] like Figure 5 , Figure 6 , Figure 7 , Fig. 9 and Fig.10 As shown, the horizontal positioning assembly 420 includes a second spring 421 fixedly connected to the inner bottom wall of the placement cavity 310, a top of the second spring 421 is fixedly connected to a push plate 422 that is slidably connected to the placement cavity 310, and a surface of the push plate 422 is fixedly connected to a vertical bar 423 that is slidably connected to the placement cavity 310 and the sliding frame 412; a second protective pad 424 is bonded to the top of the push plate 422, and the second protective pad 424 is a rubber material component, which can avoid the probability of the test tube being damaged due to collision with the push plate 422 during vibration, thereby achieving a good protection effect;

[0050] When the inspector inserts the test tube, the bottom of the test tube contacts the push plate 422 and presses down the push plate 422, and the push plate 422 presses down the second spring 421. When the inspector closes the placement chamber 310 through the sealing mechanism 500, the second spring 421 applies an upward thrust to the test tube through the push plate 422, which can push the test tube to the bottom of the sealing mechanism 500, so that the test tube can be stably locked inside the placement chamber 310.

[0051] When the inspector unlocks the sealing mechanism 500 and separates the sealing mechanism 500 from the test tube, the test tube loses its vertical restriction, and the second spring 421 quickly pushes the test tube upward through the push plate 422, which can push part of the test tube to the outside of the placement cavity 310, so that the inspector can quickly remove the test tube.

[0052] like Figure 5 , Fig. 9 and Fig.10As shown, the locking assembly 430 includes a first positioning block 431 slidably connected to the inside of the placement cavity 310, one end of the first positioning block 431 is fixedly connected to a second positioning block 432 arranged on the inner side of the sliding frame 412, one end of the first positioning block 431 and the second positioning block 432 are respectively tightly attached to the sliding frame 412 and the vertical bar 423, and a side end of the first positioning block 431 is provided with an oblique opening 4311, and the inner bottom wall of the oblique opening 4311 gradually rises from the first positioning block 431 to the direction of the second positioning block 432, and the inner side of the oblique opening 4311 is slidably connected to the second positioning block 432. An adjustment frame 433, the top of which is fixedly connected with a cross rod 434 that is slidably connected to the placement cavity 310, the top of which passes through the placement cavity 310 and contacts the sealing plate 510, and the surface of the cross rod 434 is sleeved with a third spring 435 that is fixedly connected to the placement cavity 310; the cross rod 434 has an arc-shaped cross section, and the surface of the cross rod 434 is smooth, which can reduce the resistance of the sealing mechanism 500 pressing down the cross rod 434, and avoid the probability of the sealing mechanism 500 and the cross rod 434 being stuck together;

[0053] When the inspector closes the access port 210 through the sealing mechanism 500, the sealing mechanism 500 gradually presses down the cross rod 434, and the cross rod 434 drives the adjustment frame 433 to move downward. The adjustment frame 433 drives the first positioning block 431 to slide in the direction of the sliding frame 412 through the oblique opening 4311, and the first positioning block 431 drives the second positioning block 432 to slide in the direction of the vertical bar 423. When the sealing mechanism 500 just seals the access port 210, the first positioning block 431 and the second positioning block 432 are respectively abutted against the sliding frame 412 and the vertical bar 423, which can prevent the arc-shaped clamping plate 413 and the push plate 422 from moving, and further plays the effect of firmly locking the test tube.

[0054] like Figure 4 , Figure 6 , Figure 7 , Figure 8 and Fig. 9As shown, a uniformly distributed sealing mechanism 500 is installed inside the discharge port 210, and the bottom of the sealing mechanism 500 contacts the adjacent elastic positioning mechanism 400; the sealing mechanism 500 includes a sealing plate 510 rotatably connected to the inside of the discharge port 210, the bottom of the sealing plate 510 contacts the adjacent elastic positioning mechanism 400, and an adjusting cavity 511 is provided on the top of the sealing plate 510, and an L-shaped positioning plate 520 is slidably connected inside the adjusting cavity 511, and both ends of the L-shaped positioning plate 520 pass through the adjusting cavity 511, and one end of the L-shaped positioning plate 520 is snap-fitted with the discharge port 210; the interior of the heat insulation box cover 200 is provided with uniformly distributed snap-fitting grooves 220 that are respectively connected to the adjacent discharge port 210, and one end of the L-shaped positioning plate 520 is snap-fitted with the snap-fitting groove 220, which can increase the L-shaped positioning plate 520 and the discharge port 210. The clamping area can lock the sealing plate 510 in the release port 210 more stably; a fourth spring 530 is fixedly connected between the L-shaped positioning plate 520 and the adjusting chamber 511, and the fourth spring 530 is arranged on the side of the L-shaped positioning plate 520 facing away from the clamping groove 220. This can not only reset the L-shaped positioning plate 520 by itself after the L-shaped positioning plate 520 loses its obstruction, but also increase the clamping effect of the L-shaped positioning plate 520 and the clamping groove 220; a guide rod 540 is fixedly connected to one of the vertical inner walls of the adjusting chamber 511, and the fourth spring 530 is sleeved on the surface of the guide rod 540. A guide groove 521 is opened on the surface of the L-shaped positioning plate 520, and one end of the guide rod 540 passes through the interior of the guide groove 521, which can limit the running trajectory of the L-shaped positioning plate 520 and the fourth spring 530 to ensure that the locking and resetting operations can be carried out normally.

[0055] Working principle: When the inspector needs to place a test tube containing a food sample, the inspector only needs to move the L-shaped positioning plate 520 in the corresponding access port 210 out of the clamping groove 220, and then rotate the sealing plate 510 90 degrees. At this time, the corresponding placement cavity 310 is exposed to the outside. The inspector only needs to insert the test tube between the two arc-shaped clamping plates 413 and the push plate 422, and then rotate the sealing plate 510 again. The sealing plate 510 actively drives the test tube to continue to move downward during the rotation process until the sealing plate 510 horizontally closes the access port 210. At this time, the inspector It is only necessary to re-engage the L-shaped positioning plate 520 with the engaging groove 220, and the test tube can be effectively locked inside the placement cavity 310. This not only enables the normal placement and removal of the test tube without moving other test tubes, but also prevents the samples inside other test tubes from being deteriorated or damaged due to movement or contact with the outside world, thereby reducing the impact on subsequent detection. At the same time, it can also reduce the probability of changes in the temperature or environment inside and outside the incubator 100, so that the test tube in the incubator 100 is placed in a constant temperature and stable environment, further reducing the impact on subsequent detection.

[0056] When the inspectors need to place and take out test tubes in batches, they only need to unlock the lock and then rotate the heat-insulating box cover 200 away from the heat-insulating box 100. At this time, all the placement cavities 310 are unobstructed, and the inspectors can place and take out the test tubes in batches.

[0057] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0058] The above-described embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for a person of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the attached claims.

Claims

1. A sample storage device for food testing, characterized in that: include: Insulation box (100); A heat-insulating box cover (200), the heat-insulating box cover (200) being hinged to the top of the heat-insulating box (100), and the top of the heat-insulating box cover (200) is provided with evenly distributed access openings (210); A heat preservation frame (300), the heat preservation frame (300) being fixedly connected to the interior of the heat preservation box (100), and the top of the heat preservation frame (300) being provided with placement cavities (310) which are evenly distributed and aligned with the adjacent placement and removal openings (210); Evenly distributed elastic positioning mechanisms (400), the elastic positioning mechanisms (400) being installed inside the placement cavity (310); Uniformly distributed sealing mechanisms (500), the sealing mechanisms (500) being installed inside the access opening (210), the bottom of the sealing mechanisms (500) being in contact with the adjacent elastic positioning mechanisms (400); The sealing mechanism (500) comprises a sealing plate (510) rotatably connected to the inside of the release port (210), the bottom of the sealing plate (510) contacts the adjacent elastic positioning mechanism (400), the top of the sealing plate (510) is provided with an adjustment cavity (511), the inside of the adjustment cavity (511) is slidably connected with an L-shaped positioning plate (520), both ends of the L-shaped positioning plate (520) pass through the adjustment cavity (511), and one end of the L-shaped positioning plate (520) is clamped with the release port (210).

2. The sample storage device for food testing according to claim 1, characterized in that: The elastic positioning mechanism (400) comprises a lateral positioning component (410), a horizontal positioning component (420) and a locking component (430); The lateral positioning assembly (410) comprises two first springs (411) symmetrically fixedly connected to two relatively vertical inner walls of the placement cavity (310), the opposite ends of the two first springs (411) are fixedly connected to a sliding frame (412) slidably connected to the placement cavity (310), and the opposite ends of the two sliding frames (412) are fixedly connected to an arc-shaped clamping plate (413); The horizontal positioning assembly (420) comprises a second spring (421) fixedly connected to the inner bottom wall of the placement cavity (310); the top of the second spring (421) is fixedly connected to a push plate (422) slidably connected to the placement cavity (310); the surface of the push plate (422) is fixedly connected to a vertical bar (423) slidably connected to the placement cavity (310) and the sliding frame (412); The locking assembly (430) comprises a first positioning block (431) slidably connected to the inside of the placement cavity (310); one end of the first positioning block (431) is fixedly connected to a second positioning block (432) arranged on the inner side of the sliding frame (412); one end of the first positioning block (431) and one end of the second positioning block (432) are respectively tightly attached to the sliding frame (412) and the vertical bar (423); a side end of the first positioning block (431) is provided with an oblique opening (4311); an inner bottom wall of the oblique opening (4311) The inclined opening (4311) gradually rises in the direction from the first positioning block (431) to the second positioning block (432), and an adjusting frame (433) is slidably connected inside. The top of the adjusting frame (433) is fixedly connected to a cross rod (434) slidably connected to the placement cavity (310), and the top of the cross rod (434) passes through the placement cavity (310) and contacts the sealing plate (510), and the surface of the cross rod (434) is sleeved with a third spring (435) fixedly connected to the placement cavity (310).

3. The sample storage device for food testing according to claim 1, characterized in that: The interior of the heat-insulating box cover (200) is provided with evenly distributed snap-in grooves (220) respectively connected to the adjacent access openings (210), and one end of the L-shaped positioning plate (520) is snap-fitted to the snap-in groove (220).

4. The sample storage device for food testing according to claim 3, characterized in that: A fourth spring (530) is fixedly connected between the L-shaped positioning plate (520) and the adjustment cavity (511), and the fourth spring (530) is arranged on a side of the L-shaped positioning plate (520) that is away from the clamping groove (220).

5. The sample storage device for food testing according to claim 4, characterized in that: One of the vertical inner walls of the adjustment cavity (511) is fixedly connected to a guide rod (540), and the fourth spring (530) is sleeved on the surface of the guide rod (540).

6. The sample storage device for food testing according to claim 5, characterized in that: A guide groove (521) is provided on the surface of the L-shaped positioning plate (520), and one end of the guide rod (540) penetrates into the interior of the guide groove (521).

7. The sample storage device for food testing according to claim 2, characterized in that: The corners of the top and side ends of the arc-shaped clamping plate (413) are rounded, and the radius of the rounded corner is smaller than the thickness of the arc-shaped clamping plate (413).

8. The sample storage device for food testing according to claim 2, characterized in that: The opposite ends of the two arc-shaped clamping plates (413) are both bonded with first protection pads (414), and the first protection pads (414) are rubber material components.

9. The sample storage device for food testing according to claim 2, characterized in that: A second protection pad (424) is bonded to the top of the push plate (422), and the second protection pad (424) is a rubber material component.

10. The sample storage device for food testing according to claim 2, characterized in that: The cross-sectional shape of the top of the cross rod (434) is an arc shape, and the surface of the cross rod (434) is smooth.

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