Strongly sealed milk storage tank

Abstract

The utility model relates to the technical field of storage tank, specifically relates to a strong sealing property milk storage tank, including the jar body and setting at the top of jar body's sealing cover, is equipped with the sealing ring between sealing cover and jar body, and the both sides of sealing ring are equipped with magnetic attraction locking assembly, and the magnetic attraction locking assembly includes the first magnetic piece fixed in sealing cover and the second magnetic piece fixed in jar body, and the first magnetic piece and the second magnetic piece attract each other to compress the sealing ring, the utility model can guarantee high -efficient sealing, and have excellent cleanability, no health dead angle.

Description

Technical Field

[0001] This utility model relates to the field of storage tank technology, specifically to a highly airtight milk storage tank. Background Technology

[0002] Milk storage tanks are key equipment used in the dairy industry for storing fresh milk, and their sealing performance directly affects the hygiene, safety, and shelf life of the milk.

[0003] In the prior art, various improved sealing structures have emerged to enhance sealing performance. For example, Chinese utility model patent CN218369689U discloses a "strongly sealed milk storage tank," which uses a sealing cap on the top of the tank and a mechanical latching assembly consisting of a fixing rod, fixing block, sliding plate, locking rod, and spring to lock and seal the cap. While this structure improves the sealing effect, its locking mechanism has significant shortcomings: the fixing block, sliding plate, and spring together create multiple narrow gaps and dead angles. During daily use of the milk storage tank, these dead angles easily accumulate milk, making them difficult to thoroughly clean and disinfect, thus providing a breeding ground for microorganisms and posing a hygiene hazard of contaminating the milk inside the tank.

[0004] Therefore, there is an urgent need in the existing technology for a milk storage tank sealing solution that can ensure efficient sealing while also having excellent cleanability and no unsanitary dead corners. Utility Model Content

[0005] In view of this, the purpose of this utility model is to provide a milk storage tank with strong sealing to solve the problems mentioned in the background art, such as the complex sealing structure, the existence of sanitary dead corners, and the easy occurrence of microbial contamination.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A tightly sealed milk storage tank includes a tank body and a sealing cap disposed on the top of the tank body. A sealing ring is provided between the sealing cap and the tank body. Magnetic locking components are provided on both sides of the sealing ring. The magnetic locking components include a first magnetic element fixed to the sealing cap and a second magnetic element fixed to the tank body. The first magnetic element and the second magnetic element attract each other to press the sealing ring tightly.

[0008] As a further embodiment of this utility model, both the first magnetic element and the second magnetic element are ring-shaped multipole magnet arrays. The ring-shaped multipole magnet array is composed of multiple small magnets with alternating magnetic polarities, and the magnetic poles of the small magnets corresponding to the top and bottom of the first magnetic element and the second magnetic element are opposite.

[0009] As a further embodiment of this utility model, a flange is provided on the top of the tank, and the second magnetic component is fixed to the flange.

[0010] As a further embodiment of this utility model, the sealing cover is rotatably connected to one side of the flange, and a safety buckle is fixedly connected to the other side of the flange and is detachably connected to the other end of the sealing cover through the safety buckle.

[0011] As a further improvement of this utility model, the sealing ring is a food-grade silicone sealing ring, which is embedded in the bottom of the sealing cover.

[0012] As a further improvement of this utility model, a clamp cap is provided on the feeding pipe at the top of the tank.

[0013] By adopting the above technical solution, this utility model will have the following beneficial effects:

[0014] This invention fundamentally changes the way a seal is achieved by incorporating a magnetic locking component between the can and the sealing cap. This component replaces the complex mechanical latches composed of fixing blocks, sliding plates, and springs in the prior art with non-contact magnetic force. This replacement directly eliminates those hard-to-clean narrow gaps and hygiene dead spots, structurally preventing milk residue and the breeding ground for microorganisms, thus solving the most critical hygiene problem. Simultaneously, because the mutual attraction between the first and second magnetic components directly acts on the sealing ring, it not only achieves a reliable sealing effect but also, due to its simple planar contact structure, makes the entire sealed area easy to clean thoroughly. Therefore, this solution perfectly resolves the contradiction of prior art sacrificing cleanliness in pursuit of sealing while ensuring efficient sealing. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a front view structural diagram of the highly airtight milk storage tank described in an embodiment of the present utility model;

[0017] Figure 2 for Figure 1 A side view of the sealing cap of the milk storage tank described in the embodiment.

[0018] The correspondence between the labels and component names in the attached figures is as follows:

[0019] 1. Tank body; 11. Flange; 2. Feeding pipe; 3. Clamp cover; 4. Sealing cover; 5. Sealing ring; 61. First magnetic component; 62. Second magnetic component; 7. Safety buckle. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figure 1 and Figure 2 This embodiment provides a highly airtight milk storage tank, including a tank body 1. The top of the tank body 1 is connected to a feeding pipe 2. The feeding pipe 2 is covered with a movable cover. A sealing cover 4 is provided on the outside of the movable cover and placed on the tank body 1. Both the movable cover and the sealing cover 4 are provided with handles. A sealing gasket is provided at the bottom of the movable cover at the opening of the feeding pipe 2. A sealing ring 5 is provided between the sealing cover 4 and the tank body 1. The above belongs to the existing structural design.

[0022] The core improvement of this embodiment lies in the magnetic locking assembly provided on both sides of the sealing ring 5. This magnetic locking assembly includes a first magnetic element 61 fixed to the sealing cap 4 and a second magnetic element 62 fixed to the tank body 1. The first magnetic element 61 and the second magnetic element 62 attract each other to press the sealing ring 5 tightly. By replacing the traditional mechanical buckle with magnetic locking, a balance between high sealing performance and no unsanitary corners is achieved.

[0023] Specifically, the top of the tank 1 is machined into a flat flange 11. The surface of the flange 11 is machined with high precision to ensure its flatness and tight fit with the sealing cap 4. The aforementioned second magnetic component 62 is fixedly connected to the flange 11. In this embodiment, the second magnetic component 62 is a ring-shaped multipole magnet array composed of multiple small magnets arranged in alternating N-S-N polarities. The second magnetic component 62 is completely encapsulated within a ring-shaped shell made of food-grade 316L stainless steel, completely isolating it from the external environment and the materials inside the tank. The top surface of this encapsulation shell is flush with the upper surface of the flange 11, forming a seamless whole.

[0024] It should be noted that the core advantage of the aforementioned annular multipole magnet array design lies in its optimized magnetic circuit. Since magnetic field lines always tend to follow the path of least magnetic resistance, in this array, the shortest path with the lowest magnetic resistance for magnetic field lines emanating from any N pole is directly into the adjacent S pole, thus forming countless short and efficient micro-magnetic loops within the magnet. This significantly reduces magnetic field leakage into the air, concentrating the magnetic flux highly on the magnet's working surface, generating a much stronger attraction force than a single magnet. Simultaneously, decomposing a single magnetic pole into multiple alternating pole pairs ensures an extremely uniform magnetic field distribution throughout the annular region, guaranteeing that the sealing ring 5 receives consistent, dead-angle-free clamping force, thereby achieving excellent sealing reliability.

[0025] Specifically, the main body of the sealing cap 4 is also made of food-grade 316L stainless steel. An annular groove is formed at the bottom of the sealing cap 4, within which the aforementioned sealing ring 5 is integrally molded. This sealing ring 5 is made of food-grade antibacterial silicone material, such as silicone with added silver ion antibacterial agents, to inhibit microbial growth at the material level. The sealing ring 5 is designed with a compression rate of 30% to ensure a reliable seal under pressure.

[0026] Specifically, within the aforementioned annular groove, corresponding to the position of the second magnetic element 62 on the flange 11, a first magnetic element 61 is embedded. To address the challenge of material corrosion, the first magnetic element 61 is also completely encapsulated within an annular shell made of food-grade 316L stainless steel, with its bottom surface flush with the upper surface of the sealing ring 5. This first magnetic element 61 is also an annular multipole magnet array composed of multiple small magnets arranged in alternating N-S-N polarities. When installed, its polarity is completely opposite to that of the corresponding small magnets above and below the second magnetic element 62; that is, the N pole of the first magnetic element 61 is directly opposite the S pole of the second magnetic element 62. This "dual multipole" pairing design ensures that the magnetic lines of force form the shortest and most efficient closed loop between the two arrays, thereby generating a strong and uniform attractive force without any repulsive torque, ensuring that the sealing ring 5 is subjected to perfectly consistent clamping force.

[0027] More specifically, to address the issue of magnetic force attenuation, the small magnets in the second magnetic component 62, which makes up the first magnetic component 61, are all made of high-performance N38SH neodymium magnets, which have a maximum operating temperature of 150°C and can fully withstand the high temperatures of the milk storage tank during the CIP (clean-in-place) process.

[0028] Furthermore, to prevent accidental opening under equipment vibration or unexpected impact, this embodiment adds a rotating safety buckle 7 to the side of the flange 11. This safety buckle 7 is connected to the flange 11 via a hinge and can rotate 90°. Once the sealing cover 4 is magnetically attracted into place, rotating the safety buckle 7 above the edge of the sealing cover 4 restricts its vertical upward movement. This safety buckle 7 has a simple structure, a smooth surface, and almost no gaps, making it difficult to create new unsanitary corners.

[0029] Furthermore, to ensure precise alignment between the sealing cap 4 and the flange 11 and to prevent leakage due to mismatch of the sealing surfaces, this embodiment features two symmetrically arranged locating pins on the flange 11, and corresponding locating holes (not shown in the figure) are provided on the sealing cap 4. During operation, simply align the locating holes of the sealing cap 4 with the locating pins of the flange 11 to achieve perfect alignment, ensuring uniform magnetic attraction and force distribution on the sealing ring 5.

[0030] Furthermore, the aforementioned movable cover can be configured as a quick-release clamp cover 3. This clamp cover 3 is fixed to the outer wall of the feeding pipe 2 by a clamp with a quick-locking handle, replacing the original threaded connection. This design avoids the problem of milk residue in the thread gaps, and disassembly and installation only take one second, greatly facilitating cleaning and operation.

[0031] It should be noted that the greatest resistance during the opening of the sealing cap 4 is the initial breaking force (pressure difference and adsorption force), which is instantaneous. Once the seal is broken, the subsequent sustained pulling force required to overcome the uniformly distributed magnetic force is actually not large. The operator can hold the handle or use a tool to apply a rotating or tilting force upwards, so that one side of the sealing cap 4 is first pried open with a tiny gap, allowing air to enter instantly, the internal and external pressure difference disappears, and the adsorption force drops sharply. Of course, the minimum clamping force required to maintain the seal can also be calculated based on the diameter of the tank 1, the design pressure, and the characteristics of the sealing ring 5. Based on this, a magnet array with a magnetic force of about 1.5 times the minimum clamping force can be selected. This can resist pressure fluctuations caused by equipment vibration and temperature changes without exceeding the normal range of human power, thus ensuring that the sealing cap 4 is both reliably sealed and can be easily opened by normal human power.

[0032] The workflow of this utility model is as follows:

[0033] When closing, align the positioning hole on the sealing cover 4 with the positioning pin on the flange 11 and gently lower it. Guided by the positioning pin, the sealing cover 4 and flange 11 are precisely aligned. When they approach each other, the strong magnetic force between the first magnetic element 61 and the second magnetic element 62 will automatically attract and press the sealing cover 4 onto the flange 11, so that the sealing ring 5 reaches the set compression rate and forms a reliable seal. Finally, rotate the safety buckle 7 90° to lock the edge of the sealing cover 4, completing the locking process. To open, first unscrew the safety buckle 7, then apply a rotating or tilting lifting force to the sealing cover 4 to remove it. The operation is simple and quick.

[0034] Since all sealing components (sealing cover 4, clamp cover 3) are removable and have smooth, flat surfaces without any gaps, grooves, or spring cavities, they can be easily cleaned manually or directly entered into the CIP system for online cleaning, ensuring the hygiene standards of the equipment.

[0035] 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 tightly sealed milk storage tank, comprising a tank body (1) and a sealing cap (4) disposed on the top of the tank body (1), wherein a sealing ring (5) is provided between the sealing cap (4) and the tank body (1), characterized in that, The sealing ring (5) is provided with magnetic locking components on both sides. The magnetic locking components include a first magnetic element (61) fixed to the sealing cover (4) and a second magnetic element (62) fixed to the tank body (1). The first magnetic element (61) and the second magnetic element (62) attract each other to press the sealing ring (5).

2. The milk storage tank with a strong seal according to claim 1, characterized in that, The first magnetic element (61) and the second magnetic element (62) are both ring-shaped multipole magnet arrays. The ring-shaped multipole magnet array is composed of multiple small magnets with alternating magnetic polarities, and the magnetic poles of the small magnets corresponding to the first magnetic element (61) and the second magnetic element (62) are opposite.

3. The highly airtight milk storage tank according to claim 1 or 2, characterized in that, The tank body (1) is provided with a flange (11) on the top, and the second magnetic component (62) is fixed on the flange (11).

4. The milk storage tank with a strong seal according to claim 3, characterized in that, The flange is rotatably connected to the sealing cover (4) on one side, and a safety buckle (7) is fixedly connected to the other side of the flange and is detachably connected to the other end of the sealing cover (4) through the safety buckle (7).

5. The milk storage tank with a strong seal according to claim 1, characterized in that, The sealing ring (5) is a food-grade silicone sealing ring (5) and is embedded in the bottom of the sealing cover (4).

6. The milk storage tank with a strong airtight seal according to claim 1, characterized in that, The feed pipe (2) at the top of the tank (1) is equipped with a clamp cover (3).

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