Unfreezing device based on net content detection of water-frozen commodities
By designing a thawing device for frozen goods with a lower mesh screen at a 17° angle and a magnetic limiter, the problems of cumbersome operation and instability were solved, achieving uniform thawing and stable water control of frozen goods and improving detection accuracy.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 苏州市食品检验检测中心(苏州市食品安全快检中心)
- Filing Date
- 2025-04-11
- Publication Date
- 2026-05-15
AI Technical Summary
Existing equipment for testing the net content of frozen goods is cumbersome to operate and unstable, making it difficult to meet the requirements of the JJF1070-2023 standard. The water control operation after thawing is inconvenient and affects the accuracy of the test.
A defrosting device comprising an upper mesh screen and a lower mesh screen was designed. The lower mesh screen is at a 17° angle to the divider plate. The lower mesh screen supports the product and allows it to be placed at an angle. Combined with a magnetic limiting structure and a hanging ear design, stability and ease of operation are ensured.
It achieves uniform thawing and stable water control of frozen products, improves testing accuracy, simplifies operation procedures, and meets standard requirements.
Smart Images
Figure CN224247417U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a thawing device, and more specifically, to a thawing device based on the detection of the net content of frozen goods. Background Technology
[0002] In recent years, with the continuous improvement of people's living standards, pre-packaged frozen products have become the main daily consumer goods for the general public. The net content of frozen products is determined in accordance with JJF1070-2023 "Rules for Metrological Inspection of Net Content of Pre-packaged Products".
[0003] Existing measurement methods involve thawing frozen goods or using large, specialized equipment, which is too cumbersome for general third-party testing laboratories and has some aspects that do not meet the requirements of the JJF1070-2023 standard. Alternatively, the frozen goods are placed directly into a mesh screen and then into a water tank for thawing. This method cannot accurately control the standard requirement that the thawing container's volume be "not less than four times the volume of the goods being thawed" and the bottom-inlet, top-outlet structure. Furthermore, after thawing, the mesh screen is directly removed and tilted for water drainage, requiring 2 minutes of settling. This requires manual tilting or the use of a tool rack, which is inconvenient and results in unstable placement.
[0004] Therefore, a new solution is needed to address this problem. Utility Model Content
[0005] To solve the above-mentioned technical problems, this utility model provides a thawing device based on the detection of net content of frozen goods. Through its structural design, it is easy to use and easy to clean.
[0006] The technical solution of this utility model is:
[0007] A thawing device for detecting the net content of frozen goods includes a water tank and a mesh screen structure placed inside the water tank for placing the goods. The mesh screen structure includes an upper mesh screen and a lower mesh screen, which are separated by a partition mesh plate. The top of the upper mesh screen is open for placing the product, and the lower mesh screen has a triangular cross-section. A water inlet is provided at the bottom of the side wall of the water tank, and a water outlet is provided at the top of the side wall of the water tank. The water outlet is located above the partition mesh plate, and the upper mesh screen has hanging ears on both sides for hanging at the opening of the water tank.
[0008] The present invention is further configured such that the included angle between the long side of the lower mesh screen and the partition plate is between 17° and 20°.
[0009] The present invention is further configured such that the separating mesh plate is rotatably connected to the inner wall of the upper mesh screen, and the side of the separating mesh plate opposite to the rotating part is provided with a limiting structure for restricting its rotation.
[0010] The present invention is further configured such that the limiting structure includes two limiting members symmetrically arranged on the side of the separating mesh plate and arranged symmetrically with each other, the limiting members are magnets, there is a gap between adjacent limiting members, and there is a gap between the side of the separating mesh plate away from the rotating part and the inner sidewall of the upper screen.
[0011] The present invention is further configured such that the cross-section of the limiting member is triangular, and the mating member has a guide surface on the side facing the partition mesh plate, and the limiting member is in contact with the guide surface.
[0012] The present invention is further configured such that a mesh cover is fastened to the open top portion of the upper mesh screen, and there is a gap between the lower mesh screen and the bottom wall of the water tank.
[0013] The present invention is further configured such that the hanging ear has a hanging part that fits against the top surface of the water tank, the hanging part is located above the mesh cover, and the water outlet is located above the mesh cover.
[0014] The present invention is further provided that the top of the dividing mesh plate opposite to the rotating part is provided with a handle.
[0015] The beneficial technical effects of this utility model are:
[0016] By setting up an upper and lower mesh screen, with the lower mesh screen providing support, and the angle between the long side of the lower mesh screen and the partition plate being 17°, the entire mesh screen structure is placed on a horizontal surface. The lower mesh screen provides support, allowing the goods placed on top of the partition plate to be tilted relative to the surface, making it easier to control water content without manual tilting or the use of tools. This makes operation more convenient. Furthermore, the long side support of the lower mesh screen ensures greater stability and guarantees consistent water control, thus ensuring detection accuracy. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the structure of this utility model;
[0018] Figure 2 This is a schematic diagram of the mesh screen structure of this utility model;
[0019] Figure 3 This is an exploded view of the mesh screen structure of this utility model;
[0020] Figure 4 This is a cross-sectional view of the mesh screen structure of this utility model;
[0021] Figure 5 for Figure 4 Enlarged view of point A in the middle.
[0022] In the diagram, 1 is the water tank; 11 is the water inlet; 12 is the water outlet; 2 is the upper mesh screen; 21 is the hanging ear; 22 is the mating part; 3 is the lower mesh screen; 4 is the dividing mesh plate; 41 is the handle; 42 is the limiting part; and 5 is the mesh cover. Detailed Implementation
[0023] In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit the scope of this utility model.
[0024] A thawing device based on the detection of net content of frozen goods, such as Figures 1-5 As shown, the device includes a water tank 1 and a mesh screen structure placed inside the water tank 1 for placing goods. The mesh screen structure includes an integrally formed upper mesh screen 2 and a lower mesh screen 3, which are separated by a partition mesh plate 4. Goods are placed above the partition mesh plate 4 and inside the upper mesh screen 2. The upper mesh screen 2, lower mesh screen 3, and partition mesh plate 4 can all be made of stainless steel wire to form mesh holes, and the outer frame is made of relatively thick stainless steel strips, ensuring the overall structural stability while also ensuring the lower mesh screen 3. For support, the partition screen 4 is densely covered with filter mesh holes. The top of the upper screen 2 is open for product placement. The lower screen 3 has a triangular cross-section. The bottom of the side wall of the water tank 1 has an inlet 11 and the top of the side wall of the water tank 1 has an outlet 12. The outlet 12 is located above the partition screen 4, so that the overall screen structure and the water tank 1 can meet the standard of JJF1070-2023 "Rules for Measurement and Inspection of Net Content of Quantitatively Packaged Commodities". The upper screen 2 has hanging ears 21 on both sides for hanging at the opening of the water tank 1.
[0025] The water tank 1 has a rectangular structure, and the water inlet 11 at the bottom of the side wall of the water tank 1 can be connected to a water pipe and connected to clean water. The water outlet 12 is located at the top of the side wall of the water tank 1, which allows water to overflow from the water outlet 12 and maintains the water flow rate, so that the water tank 1 forms flowing water. The water outlet 12 is located above the separator, so that the frozen products can be completely submerged in the water, making the thawing of the frozen products more uniform and preventing the loss of moisture from the products. The separator plate 4 separates the frozen products from the lower screen 3, which can prevent the debris on the frozen products from adhering to the lower screen 3, thereby affecting the subsequent detection accuracy and making cleaning more inconvenient. The hanging ears 21 can be hung on the top surface of the water tank 1, so that the screen structure is suspended in the water tank 1.
[0026] The long side of the lower mesh screen 3 forms an angle of 17° with the partition plate. The entire mesh screen structure is placed on a horizontal surface. With the support of the lower mesh screen 3, the goods placed on top of the partition plate 4 are tilted relative to the placement surface, which makes it easier to control the water in the goods. There is no need to manually tilt or use tools, making the operation more convenient. Moreover, the long side support of the lower mesh screen 3 makes the placement more stable, ensuring the stability of water control and thus ensuring the detection accuracy.
[0027] The separator screen 4 can be bound to the inner wall of the upper screen 2 with steel wire, allowing the separator screen 4 to be rotatably connected to the inner wall of the upper screen 2. This integrates the separator screen 4 with the overall screen structure, making storage and retrieval more convenient. A limiting structure is provided on the side of the separator screen 4 away from the rotating part to restrict its rotation, preventing a large opening between the upper screen 2 and the lower screen 3 from occurring when the separator screen 4 rotates. This would prevent residue from falling into the lower screen 3 after the frozen goods have thawed, making cleaning difficult. The limiting structure includes two limiting members 42 symmetrically arranged on the side of the separator screen 4 away from the rotating part. The two limiting members 42 are magnets, and there is a gap between adjacent limiting members 42. A mating member 22 that cooperates with the limiting member 42 is fixedly connected to the inner wall of the upper screen 2. 2 is elongated, and the limiting member 42 has a triangular cross-section. The mating member 22 has a guide surface on the side facing the separating screen plate 4. The guide surface on the mating member 22 fits closely with the limiting member 42. There is a gap between the side of the separating screen plate 4 away from the rotating part and the inner wall of the upper screen 2, making the rotation of the separating screen plate 4 more convenient. The elongated shape of the mating member 22 can cover the gap between the separating screen plate 4 and the inner wall of the upper screen 2, thus achieving a better isolation effect. The guide surface on the mating member 22 has a good guiding effect, which can better guide the flow and prevent liquid residue from affecting the detection accuracy. Holes can be made in the mating member 22 to further prevent liquid residue. A handle 41 is fixedly connected to the top of the separating screen plate 4, making it more convenient to rotate the separating screen plate 4.
[0028] The top opening of the upper mesh screen 2 is rotatably connected to a mesh cover 5, making the upper mesh screen 2 and the mesh cover 5 an integrated structure for easy storage. The hanging ears 21 have a hanging part that fits against the top surface of the water tank 1. The hanging part is located above the mesh cover 5. When the entire mesh screen structure is placed into the water tank 1, because the hanging part of the hanging ears 21 is located above the mesh cover 5, the position where the hanging ears 21 fit against the top surface of the water tank 1 is above the mesh cover 5. This ensures that both the mesh cover 5 and the mesh screen structure are located inside the water tank 1. More preferably, the outlet 12 is located on the mesh cover 5. The design ensures that the cover 5 is submerged in water during thawing, guaranteeing that the frozen goods are completely submerged and thawing efficiency is maintained. Furthermore, a locking structure is installed between the outer wall of the upper mesh sieve 2 (away from the rotating part of the cover 5) and the cover 5. This locking structure is a common hinge lock or duckbill latch, which restricts the rotation of the cover 5. The cover 5 prevents lighter goods from floating out of the mesh structure during thawing and also prevents goods from spilling when the entire mesh structure is tilted during water draining after thawing.
[0029] Working principle: Open the mesh cover 5, attach the limiting piece 42 on the separating mesh plate 4 to the mating piece 22 on the inner side of the upper mesh screen 2, and use magnetic attraction to fix the separating mesh plate 4. After unpacking the frozen goods, place them on the separating mesh plate 4. Use the separating mesh plate 4 to separate the goods from the lower mesh screen 3. After placement, close the mesh cover 5 and fix it with the locking structure. The hanging ear 21 can be hung on the top surface of the water tank 1, so that the mesh screen structure is suspended in the water tank 1. According to the laboratory standard JJF1070-2023 "Measurement and Inspection Rules for Net Content of Quantitatively Packaged Commodities", connect the water pipe to the water inlet 11 of the water tank 1 and connect it to clean water, and let it overflow from the outlet 12, so that the frozen goods can be submerged in the water to complete the thawing of the frozen goods.
[0030] After thawing, remove the entire mesh screen structure from the water tank 1. The angle between the long side of the lower mesh screen 3 and the partition plate is 17°. Place the entire mesh screen structure on a horizontal surface, using the lower mesh screen 3 for support, so that the goods placed on top of the partition plate 4 are tilted relative to the surface. Let it stand for about 2 minutes to drain the water. Then, use the method of laboratory JJF 1070-2023 "Measurement Rules for Net Content Measurement of Quantitatively Packaged Commodities" to complete the measurement work, and the test results are more accurate.
[0031] After the measurement is completed, the mesh cover 5 can be opened and the partition mesh plate 4 can be rotated using the handle 41 to clean the inside of the entire mesh structure. This makes cleaning more convenient and avoids product residue that could affect the measurement results.
[0032] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.
Claims
1. A thawing device based on the detection of net content of frozen goods, characterized in that: The device includes a water tank (1) and a mesh screen structure placed inside the water tank (1) for placing goods. The mesh screen structure includes an upper mesh screen (2) and a lower mesh screen (3). The upper mesh screen (2) and the lower mesh screen (3) are separated by a partition mesh plate (4). The top of the upper mesh screen (2) is open for placing products. The lower mesh screen (3) has a triangular cross-section. The bottom of the side wall of the water tank (1) is provided with a water inlet (11). The top of the side wall of the water tank (1) is provided with a water outlet (12). The water outlet (12) is located above the partition mesh plate (4). The upper mesh screen (2) has hanging ears (21) on both sides for hanging at the opening of the water tank (1).
2. The thawing device for detecting the net content of frozen goods according to claim 1, characterized in that: The angle between the long side of the lower mesh screen (3) and the partition plate is between 17° and 20°.
3. The thawing device for detecting the net content of frozen goods according to claim 1, characterized in that: The separator mesh plate (4) is rotatably connected to the inner wall of the upper mesh screen (2), and the separator mesh plate (4) is provided with a limiting structure on the side away from the rotating part to restrict its rotation.
4. The thawing device for detecting the net content of frozen goods according to claim 3, characterized in that: The limiting structure includes two limiting members (42) symmetrically arranged on the side of the separating mesh plate (4) and symmetrically arranged with each other. The limiting members (42) are magnets. There is a gap between the two adjacent limiting members (42). There is a gap between the side of the separating mesh plate (4) away from the rotating part and the inner wall of the upper mesh screen (2).
5. The thawing device for detecting the net content of frozen goods according to claim 4, characterized in that: The limiting member (42) has a triangular cross section. The inner wall of the upper screen (2) is fixedly connected with a fitting member (22) that cooperates with the limiting member (42). The fitting member (22) has a guide surface on the side facing the partition screen (4). The limiting member (42) is in contact with the guide surface.
6. The thawing device for detecting the net content of frozen goods according to claim 1, characterized in that: The upper mesh screen (2) has a mesh cover (5) fastened to its open top, and there is a gap between the lower mesh screen (3) and the bottom wall of the water tank (1).
7. The thawing device for detecting the net content of frozen goods according to claim 6, characterized in that: The hanging ear (21) has a hanging part that fits against the top surface of the water tank (1). The hanging part is located above the mesh cover (5), and the water outlet (12) is located above the mesh cover (5).
8. The thawing device for detecting the net content of frozen goods according to claim 1, characterized in that: The separator mesh plate (4) has a handle (41) at the top of the end opposite to the rotating part.