A temperature-controllable walnut milk production food safety detection sampling box

Abstract

The utility model relates to walnut milk production technical field discloses a controllable temperature's walnut milk production food safety detection is with sampling box, including box, the inside of box is equipped with the inner bag, is equipped with the heat preservation layer between the inner bag and the box, the outside of inner bag is equipped with the interlayer cavity, pours liquid phase change material in the inside of interlayer cavity, the inside of inner bag is equipped with the sampling placing rack, the bottom of sampling placing rack is equipped with a plurality of placing seat, the top of box is equipped with the box cover, the middle part of box cover is equipped with the convection part, the side surface of box top is equipped with the positioning part, the utility model discloses pouring in the interlayer cavity of specific phase change temperature's inorganic hydrated salt phase change material, and this material can absorb or release latent heat in phase change process (2-4 DEG C) in large quantities, thereby like an efficient 'energy pool', can long time maintain the temperature in the box in 2-4 DEG C low temperature interval required by walnut milk sample preservation.

Description

Technical Field

[0001] This utility model relates to the field of walnut milk production technology, specifically a temperature-controlled sampling box for food safety testing in walnut milk production. Background Technology

[0002] In the production of liquid foods such as walnut milk, food safety testing is a crucial step in ensuring product quality and compliance. Sampling, as the first step in testing, directly impacts the accuracy of the final test results due to the standardization of its operation and the stability of sample preservation. This is especially true for perishable dairy products; if samples are not transported to the laboratory promptly and at a constant temperature after sampling, they may deteriorate due to temperature fluctuations, leading to microbial proliferation and changes in physicochemical indicators, thus causing test deviations. Currently, most common sampling boxes use ordinary insulated boxes or simple ice packs combined with foam boxes to achieve low-temperature preservation. The above methods have the following problems: First, the ice packs have a limited cooling time and cannot maintain a stable low-temperature environment for a long time. Second, uneven distribution of ice packs can easily lead to inconsistent temperature distribution inside the box, with local temperatures being too high or too low. Active temperature control methods such as semiconductor refrigeration or compressor refrigeration are also used. Although the temperature control accuracy has been improved, their structure is complex, the cost is high, and they rely on external power, which limits their use in places without stable power supply, such as in the field or production workshops. Utility Model Content

[0003] The purpose of this invention is to provide a temperature-controlled sampling box for food safety testing in walnut milk production, which has the effect of uniform and stable temperature inside the box.

[0004] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a temperature-controlled walnut milk production food safety testing sampling box, comprising a box body, an inner liner inside the box body, a heat insulation layer between the inner liner and the box body, a double-layer cavity outside the inner liner, a liquid phase change material being filled into the double-layer cavity, a sampling rack being fitted inside the inner liner, a plurality of placement seats being provided at the bottom of the sampling rack, a box cover being fitted at the top of the box body, a convection component being provided in the middle of the box cover, and a positioning component being provided on the side of the top of the box body.

[0005] A further feature of this invention is that: a support foot is fixedly provided at the bottom of the box body, an anti-slip pad is fixedly provided at the bottom of the support foot, a sealing ring is embedded at the bottom of the box cover, and a handle is provided on the upper surface of the box cover.

[0006] A further feature of this invention is that a feeding pipe is provided on the top of one side of the interlayer cavity, penetrating the insulation layer and the top of the box body, and a sealing cap is fitted onto the top of the feeding pipe, and a groove corresponding to the sealing cap is provided on one side of the top of the box body.

[0007] A further feature of this invention is that an annular support plate is fixedly provided on the inner wall of the inner liner near the bottom, the surface of the support plate is provided with a slot and a through groove, and the bottom end of the sampling rack is fixedly provided with a block corresponding to the slot.

[0008] A further feature of this invention is that the sampling rack has multiple ventilation holes on its side, a handle is fixedly provided on the top of the inner side of the sampling rack, and a through hole is provided in the middle of the sampling rack.

[0009] A further feature of this invention is that the convection component includes a rotating shaft, the bottom end of which is rotatably connected to the bottom of the inner liner, and the rotating shaft passes through the through hole of the sampling placement rack. A mounting plate is fixedly provided on the surface of the rotating shaft and below the sampling placement rack, and stirring blades are fixedly provided on the side of the mounting plate.

[0010] A further feature of this invention is that the convection component includes a drive shaft, which is rotatably connected to the middle of the cover via a sealed bearing. A second locking block is fixedly provided at the bottom of the drive shaft, and a second locking groove corresponding to the second locking block is provided at the top of the drive shaft. After the cover is closed, the second locking block engages with the inside of the second locking groove, thereby linking the drive shaft with the rotating shaft. A rotating wheel is fixedly provided at the top of the drive shaft.

[0011] A further feature of this invention is that the positioning component includes a positioning hole, a mounting bracket, and a positioning rod. The positioning hole is located on the side of the box cover. The mounting bracket is L-shaped and fixedly mounted on the top of the side of the box body. The positioning rod is slidably connected to the top of the mounting bracket. A pull button is fixedly provided at the outer end of the positioning rod. A connecting plate is fixedly provided on the surface of the positioning rod. A positioning spring sleeved on the outside of the positioning rod is installed between the connecting plate and the inner side of the mounting bracket.

[0012] A further feature of this invention is that a mounting base is fixedly provided on the outer side of the housing, a temperature detector is fixedly provided on one side of the mounting base, and the detection probe of the temperature detector is installed on the inner side of the inner liner.

[0013] In summary, this utility model has the following beneficial effects: 1. Achieved long-term, passive constant temperature control: Utilizing inorganic hydrated salt phase change material with a specific phase change temperature injected into the interlayer cavity, this material can absorb or release a large amount of latent heat during the phase change process (2-4℃), thus acting as a highly efficient "energy pool" to maintain the temperature inside the chamber stably at the low temperature range of 2-4℃ required for the preservation of samples such as walnut milk for a long time. The entire process does not rely on an external power source, making it particularly suitable for use in production workshops, during transportation, or in the field where there is no stable power supply, thus solving the problems of short insulation time and large temperature fluctuations of traditional ice packs. 2. Ensures uniformity and stability of temperature field within the chamber: Through the synergistic effect of multiple design features, temperature uniformity is greatly improved. The inner liner and sampling rack are made of metal materials with good thermal conductivity, allowing cold air to be quickly and evenly conducted to all locations within the chamber and to each sampling bottle, avoiding localized overheating or overcooling. The unique convection component design, by manually driving the stirring blades to rotate after the chamber lid is closed, effectively agitates the air inside the chamber, forces cold air circulation, breaks up thermal stratification, and further ensures the consistency of temperature at each sampling point, thereby guaranteeing the same preservation quality of all samples and improving the reliability of test results. 3. Improved ease of operation and sample handling efficiency: The sampling rack adopts a modular design that can be removed as a whole, and achieves precise positioning and fixation through the cooperation of the blocks and slots. Staff only need to lift the handle to take out or put in the entire rack along with all the samples, avoiding the tediousness of taking out samples one by one, significantly improving sampling efficiency, and reducing temperature fluctuations inside the box caused by prolonged opening of the box during the handling process. 4. Enhanced safety and monitorability: The integrated temperature detector can monitor the actual temperature inside the liner in real time, allowing operators to keep track of the sample preservation status at any time. Any abnormal temperature can be dealt with promptly, providing data support and assurance for the authenticity, accuracy and integrity of the samples, and effectively meeting the strict traceability requirements of food safety testing. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural schematic diagram of the present invention; Figure 2 This is one of the structural diagrams of the box lid and box body after separation; Figure 3 This is the second schematic diagram of the structure of the box lid after it is separated from the box body. Figure 4 This is a cross-sectional structural diagram of the box body of this utility model; Figure 5 This is a cross-sectional structural diagram of the inner liner of this utility model; Figure 6 This is a schematic diagram of the sampling placement rack of this utility model; Figure 7 This utility model Figure 4 A magnified structural diagram at point A.

[0015] In the diagram: 1. Box body; 101. Support leg; 102. Insulation layer; 103. Inner liner; 104. Interlayer cavity; 105. Feeding pipe; 106. Sealing cover; 107. Support plate; 108. Slot 1; 109. Through slot; 2. Sampling rack; 201. Vent hole; 202. Through hole; 203. Block 1; 204. Placement seat; 205. Handle; 3. Rotating shaft; 301. Slot 2; 302. Mounting plate; 303. Stirring blade; 4. Box cover; 401. Sealing ring; 402. Drive shaft; 403. Block 2; 404. Rotary wheel; 405. Positioning hole; 406. Mounting frame; 407. Positioning rod; 408. Pull button; 409. Connecting plate; 4010. Positioning spring; 5. Mounting seat; 501. Temperature detector. Detailed Implementation

[0016] The present invention will be further described below with reference to the accompanying drawings of the embodiments thereof.

[0017] Please see Figures 1-7 In this embodiment of the present invention, a temperature-controlled sampling box for food safety testing in walnut milk production includes a box body 1. The box body 1 has an inner liner 103 inside, made of a metal material with good thermal conductivity, such as stainless steel or aluminum alloy. An insulation layer 102 is provided between the inner liner 103 and the box body 1. The insulation layer 102 is formed by filling the space between the inner liner 103 and the box body 1 with a high-efficiency insulation material such as polyurethane foam during the foaming process. An interlayer cavity 104 is provided on the outside of the inner liner 103. A liquid phase change material is injected into the interlayer cavity 104. The phase change material is an inorganic hydrated salt material with a phase change temperature within 2-4℃. A sampling rack 2 is fitted inside the inner liner 103. The sample placement rack 2 is made of a metal material with good thermal conductivity, such as aluminum alloy. The bottom of the sample placement rack 2 is provided with multiple placement seats 204. The placement seats 204 are provided with placement holes that match the size of the sampling bottles or sampling tubes. The top of the box body 1 is fitted with a box cover 4. The middle of the box cover 4 is provided with a convection component to agitate the air inside the box body 1. The side of the top of the box body 1 is provided with a positioning component to lock the position of the box cover 4. The outer side of the box body 1 is fixedly provided with a mounting base 5. A temperature detector 501 is fixedly provided on one side of the mounting base 5. The detection probe of the temperature detector 501 is installed inside the inner liner 103. The temperature detector 501 can detect the temperature in the inner liner 103 in real time.

[0018] In this embodiment, preferably, the bottom end of the box body 1 is fixedly provided with a support leg 101, and the bottom end of the support leg 101 is fixedly provided with an anti-slip pad to provide stable support for the box body 1. The bottom end of the box cover 4 is embedded with a sealing ring 401, which plays a sealing role after the box cover 4 is closed. The upper surface of the box cover 4 is provided with a handle to facilitate the handling of the box cover 4 and the box body 1. In this embodiment, preferably, a feeding pipe 105 is provided on the top of one side of the interlayer cavity 104, penetrating the insulation layer 102 and the top of the box body 1. A sealing cover 106 is snapped onto the top of the feeding pipe 105, which facilitates the addition and replacement of phase change material inside the interlayer cavity 104. A groove corresponding to the sealing cover 106 is provided on one side of the top of the box body 1, which facilitates the disassembly and assembly of the sealing cover 106. In this embodiment, preferably, an annular support plate 107 is fixedly provided on the inner wall of the inner liner 103 near the lower part. The surface of the support plate 107 is provided with a slot 108 and a through groove 109. The through groove 109 does not interfere with the flow of air. The bottom end of the sampling rack 2 is fixedly provided with a locking block 203 corresponding to the slot 108. The position of the sampling rack 2 is limited by the locking cooperation between the slot 108 and the locking block 203. The side of the sampling rack 2 is provided with multiple ventilation holes 201, so that the air inside the inner liner 103 can flow into the interior of the sampling rack 2. The top of the inner side of the sampling rack 2 is fixedly provided with a handle 205, which facilitates the assembly and disassembly of the sampling rack 2. The middle part of the sampling rack 2 is provided with a through hole 202, so that the rotating shaft 3 can pass through, which does not interfere with the rotation of the rotating shaft 3, nor with the assembly and disassembly of the sampling rack 2. In this embodiment, preferably, the convection component includes a rotating shaft 3. The bottom end of the rotating shaft 3 is rotatably connected to the bottom of the inner liner 103, and the rotating shaft 3 passes through the through hole 202 of the sampling placement rack 2. A mounting plate 302 is fixedly provided on the surface of the rotating shaft 3 and below the sampling placement rack 2. A stirring blade 303 is fixedly provided on the side of the mounting plate 302. The rotation of the rotating shaft 3 can drive the stirring blade 303 below to rotate, thereby agitating the air inside the box 1 and accelerating the airflow. The convection component also includes a drive shaft 402. The drive shaft 402 is rotatably connected to the middle of the cover 4 via a sealed bearing. The bottom end of the drive shaft 402 is fixedly provided with a second locking block 403, and the top of the drive shaft 402 is provided with a second locking groove 301 corresponding to the second locking block 403. After the cover 4 is closed, the second locking block 403 engages with the inside of the second locking groove 301, so that the drive shaft 402 is linked with the rotating shaft 3. The top end of the drive shaft 402 is fixedly provided with a rotating wheel 404. By manually rotating the rotating wheel 404, the drive shaft 402 can be rotated, thereby driving the rotating shaft 3 below to rotate. In this embodiment, preferably, the positioning component includes a positioning hole 405, a mounting bracket 406, and a positioning rod 407. The positioning hole 405 is located on the side of the cover 4. The mounting bracket 406 is L-shaped and fixedly mounted on the top of the side of the box body 1. The positioning rod 407 is slidably connected to the top of the mounting bracket 406. A pull button 408 is fixedly provided at the outer end of the positioning rod 407. A connecting plate 409 is fixedly provided on the surface of the positioning rod 407. A positioning device sleeved on the outside of the positioning rod 407 is installed between the connecting plate 409 and the inner side of the mounting bracket 406. When installing the cover 4, the positioning spring 4010 uses the pull button 408 to pull the positioning rod 407 outward, overcoming the elastic force of the positioning spring 4010, causing the end of the positioning rod 407 to move outward. Then, the cover 4 is installed on the top of the box body 1, so that the positioning hole 405 corresponds to the position of the positioning rod 407. The second locking block 403 of the drive shaft 402 is engaged in the second locking groove 301 of the rotating shaft 3. When the pull button 408 is released, under the elastic action of the positioning spring 4010, the end of the positioning rod 407 is engaged in the positioning hole 405, thereby limiting the position of the cover 4.

[0019] When in use, first, open the box cover 4, and pour the selected inorganic hydrated salt phase change material with a phase change temperature of 2-4℃ into the jacket cavity 104 through the feeding pipe 105. Then, tighten the sealing cover 106 and place the entire sampling box in a cold environment for pre-cooling. During the pre-cooling process, the phase change material gradually solidifies from liquid to solid, while storing a large amount of cold energy (latent heat of phase change), which provides energy reserves for subsequent heat preservation work. Next, the sample is placed in and the chamber 1 is sealed. After pre-cooling, the sampling bottles or test tubes containing the sample are inserted into the respective placement seats 204 of the sampling rack 2 in sequence. The fully loaded sampling rack 2 is then smoothly placed into the inner liner 103 using the handle 205, ensuring that the bottom locking block 203 is accurately engaged in the slot 108 of the support plate 107 for fixation. Subsequently, the lid 4 is closed. During this process, the sealing ring 401 at the bottom of the lid 4 is pressed against the top of the chamber 1 to form a sealed environment, effectively blocking heat exchange between the inside and outside of the chamber. At the same time, the drive shaft 402 on the lid 4 moves down, and the locking block 403 at its bottom is precisely inserted into the slot 301 at the top of the rotating shaft 3 to achieve power connection. After the lid 4 is closed in place, the pull button 408 is released, and the rebound force of the positioning spring 4010 pushes the positioning rod 407 to move inward, with its end inserted into the positioning hole 405 on the side of the lid 4, thus firmly locking the lid 4. Subsequently, after closing the lid 4, if it is necessary to quickly equalize the temperature inside the box, the wheel 404 at the top of the drive shaft 402 can be manually rotated clockwise. The rotational power of the wheel 404 is transmitted to the locking block 403 at its bottom through the drive shaft 402, which in turn drives the rotating shaft 3 that is engaged with it to rotate synchronously. The rotating shaft 3 drives the mounting plate 302 and the stirring blade 303 at its bottom to rotate together at the bottom of the inner liner 103. The rotation of the stirring blade 303 agitates the air at the bottom of the inner liner 103, forcing the cold air to circulate. The cold air flows through the vent 201 and the through groove 109 on the sampling rack 2, so that the cold energy is evenly distributed to every corner of the box, ensuring that all sampling bottles are in the same stable low temperature environment and avoiding local overheating. Finally, throughout the entire sampling, transportation, and temporary storage process, the detection probe of the temperature detector 501 installed inside the inner liner 103 continuously monitors the actual temperature inside the chamber and displays the data on its dial. Operators can observe the readings at any time to confirm whether the temperature is always maintained within the 2-4℃ safe range set by the phase change material, thereby ensuring that the sample will not deteriorate due to temperature fluctuations before testing.

[0020] The above description is only a preferred embodiment of the present utility model. Therefore, all equivalent changes or modifications made to the structure, features and principles described in the claims of the present utility model patent application are included in the scope of the present utility model patent application.

Claims

1. A temperature-controlled sampling box for food safety testing in walnut milk production, comprising a box body (1), characterized in that, The box (1) is provided with an inner liner (103) inside. An insulation layer (102) is provided between the inner liner (103) and the box (1). An interlayer cavity (104) is provided on the outside of the inner liner (103). Liquid phase change material is poured into the interlayer cavity (104). A sampling rack (2) is fitted inside the inner liner (103). Multiple placement seats (204) are provided at the bottom of the sampling rack (2). A box cover (4) is fitted at the top of the box (1). A convection component is provided in the middle of the box cover (4). A positioning component is provided on the side of the top of the box (1).

2. The temperature-controlled walnut milk production food safety testing sampling box according to claim 1, characterized in that: The bottom of the box body (1) is fixedly provided with a support foot (101), the bottom of the support foot (101) is fixedly provided with an anti-slip pad, the bottom of the box cover (4) is embedded with a sealing ring (401), and the upper surface of the box cover (4) is provided with a handle.

3. The temperature-controlled walnut milk production food safety testing sampling box according to claim 1, characterized in that: The top of one side of the interlayer cavity (104) is provided with a feeding pipe (105) that penetrates the insulation layer (102) and the top of the box body (1). The top of the feeding pipe (105) is fitted with a sealing cap (106). The top of the box body (1) is provided with a groove corresponding to the sealing cap (106).

4. The temperature-controlled walnut milk production food safety testing sampling box according to claim 1, characterized in that: The inner wall of the inner liner (103) is fixedly provided with an annular support plate (107) near the bottom. The surface of the support plate (107) is provided with a slot (108) and a through groove (109). The bottom end of the sampling placement rack (2) is fixedly provided with a block (203) corresponding to the slot (108).

5. The temperature-controlled walnut milk production food safety testing sampling box according to claim 1, characterized in that: The sampling rack (2) has multiple ventilation holes (201) on its side, a handle (205) is fixedly provided on the top of the inner side of the sampling rack (2), and a through hole (202) is provided in the middle of the sampling rack (2).

6. The temperature-controlled walnut milk production food safety testing sampling box according to claim 5, characterized in that: The convection component includes a rotating shaft (3), the bottom end of which is rotatably connected to the bottom of the inner liner (103), and the rotating shaft (3) passes through the through hole (202) of the sampling placement rack (2). A mounting plate (302) is fixedly provided on the surface of the rotating shaft (3) and below the sampling placement rack (2). A stirring blade (303) is fixedly provided on the side of the mounting plate (302).

7. The temperature-controlled walnut milk production food safety testing sampling box according to claim 6, characterized in that: The convection component also includes a drive shaft (402), which is rotatably connected to the middle of the cover (4) through a sealed bearing. The bottom end of the drive shaft (402) is fixedly provided with a second locking block (403), and the top of the drive shaft (402) is provided with a second locking groove (301) corresponding to the second locking block (403). After the cover (4) is closed, the second locking block (403) engages with the inside of the second locking groove (301), so that the drive shaft (402) is linked with the rotating shaft (3). The top end of the drive shaft (402) is fixedly provided with a rotating wheel (404).

8. The temperature-controlled walnut milk production food safety testing sampling box according to claim 1, characterized in that: The positioning component includes a positioning hole (405), a mounting bracket (406), and a positioning rod (407). The positioning hole (405) is located on the side of the cover (4). The mounting bracket (406) is L-shaped and fixedly located on the top of the side of the box body (1). The positioning rod (407) is slidably connected to the top of the mounting bracket (406). A pull button (408) is fixedly provided at the outer end of the positioning rod (407). A connecting plate (409) is fixedly provided on the surface of the positioning rod (407). A positioning spring (4010) sleeved on the outside of the positioning rod (407) is installed between the connecting plate (409) and the inner side of the mounting bracket (406).

9. The temperature-controlled walnut milk production food safety testing sampling box according to claim 1, characterized in that: An installation base (5) is fixedly provided on the outside of the box (1), and a temperature detector (501) is fixedly provided on one side of the installation base (5). The detection probe of the temperature detector (501) is installed on the inside of the inner liner (103).

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