A food grade carbon dioxide filling port protection device

Abstract

The utility model discloses a food grade carbon dioxide filling mouth protection device, including filling mouth joint, plug, padlock subassembly and lock head, the filling mouth joint is fixed in the end of material conveying pipe, the plug is detachable type sealed connection with filling mouth joint, a part of padlock subassembly is fixed on filling mouth joint, and the other part of padlock subassembly is fixed on the plug, and the lock head is set at the coincidence of padlock subassembly two parts. The food grade carbon dioxide filling mouth protection device provided by the utility model can completely solve the problems of filling mouth pollution and artificial damage through double protection (physical plugging + padlock management).

Description

Technical Field

[0001] This utility model relates to the field of food-grade material filling technology in the chemical industry, and in particular to a protective device for a food-grade carbon dioxide filling port. Background Technology

[0002] Food-grade carbon dioxide requires a fully enclosed pipeline transportation system from production to end-use. The core process is as follows: first, it undergoes distillation purification to achieve food-grade standards (purity ≥99.99%); then, 304 stainless steel pipelines are used, completely isolating it from the outside environment to prevent contamination; finally, a dedicated filling port connects to tank trucks for filling and transportation. The filling port is the only point of contact with the outside environment and requires special protection. Existing filling ports pose risks including: dust contamination (specifically, particulate matter deposition in the air), rainwater intrusion (specifically, corrosion or microbial growth at the filling port), and human sabotage (specifically, poisoning or introduction of foreign objects). The first two risks can reduce carbon dioxide purity, leading to food safety hazards, while the latter can cause large-scale food safety incidents. Traditional valve closures cannot provide physical isolation and access control. Therefore, solving the problems of contamination and human sabotage at food-grade carbon dioxide filling ports is a technical issue that urgently needs to be addressed by those skilled in the art. Utility Model Content

[0003] To solve the above-mentioned technical problems, this utility model provides a food-grade carbon dioxide filling port protection device, which can completely solve the problems of filling port contamination and human damage through dual protection (physical sealing + padlock management); The technical solution provided by this utility model is as follows: A food-grade carbon dioxide filling port protective device includes a filling port connector, a plug, a padlock assembly, and a lock. The filling port connector is fixed to the end of the material conveying pipe, and the plug is detachably and sealingly connected to the filling port connector. One part of the padlock assembly is fixed to the filling port connector, and the other part of the padlock assembly is fixed to the plug. The lock head is located at the overlap of the two parts of the padlock assembly.

[0004] Preferably, the filling port connector is provided with a mounting hole, and the mounting hole has an internal thread. The plug is provided with an external thread that matches the internal thread.

[0005] Preferably, the pitch of the internal thread in the mounting hole and the external thread on the plug are both fine-pitch threads.

[0006] Preferably, the padlock assembly includes a Z-shaped fixing plate connected to the plug and a fixing ring connected to the filling port connector. One end of the Z-shaped fixing plate is connected and fixed to the bottom surface of the plug, and the other end of the Z-shaped fixing plate is provided with a through hole for cooperating with the fixing ring so that the lock head can pass through and lock.

[0007] Preferably, one end of the Z-shaped fixing plate is connected to the bottom surface of the plug by a self-tapping screw.

[0008] Preferably, the retaining ring is fixed to the outer wall of the filling port connector by welding or integral molding.

[0009] Preferably, the bending angles of the two points of the fixing plate are both within the range of 90° to 120°.

[0010] Preferably, the filling port connector is sealed to the material conveying pipe by welding.

[0011] Preferably, a sealing ring is provided at the connection between the plug and the filling port connector.

[0012] Preferably, the top of the plug is provided with an anti-slip structure that facilitates tool clamping or manual screwing, and the anti-slip structure is one of knurling, polygonal prism or screwing blade.

[0013] This invention has the following advantages over the prior art: This invention relates to a food-grade carbon dioxide filling port protection device. Through the design of the filling port connector, plug, padlock assembly, and lock, it ensures that the filling port at the end of the material conveying pipe is sealed, preventing contamination from dust, rainwater, etc., significantly reducing the filling port contamination rate. Furthermore, the padlock allows for effective management, preventing incidents such as intentional poisoning or foreign object introduction. Simultaneously, this food-grade carbon dioxide filling port protection device has a simple structure, low manufacturing cost, and reduced maintenance cost, requiring no frequent cleaning, making it suitable for widespread application. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the structure of the food-grade carbon dioxide filling port protection device in the embodiments of this utility model; Figure 2 for Figure 1 Sectional view along the middle AA.

[0016] Figure label: 1. Filling port connector; 2. Plug; 3. Padlock assembly; 31. Fixing plate; 32. Fixing ring; 4. Lock head; 5. Material conveying pipe. Detailed Implementation

[0017] To enable those skilled in the art to better understand the technical solutions of this utility model, the technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0018] like Figure 1 , 2 As shown, this utility model embodiment provides a food-grade carbon dioxide filling port protection device, including a filling port connector 1, a plug 2, a padlock assembly 3, and a lock head 4. The filling port connector 1 is fixed to the end of the material conveying pipe 5. The plug 2 is detachably and sealed to the filling port connector 1. One part of the padlock assembly 3 is fixed to the filling port connector 1, and the other part of the padlock assembly 3 is fixed to the plug 2. The lock head 4 is located at the overlapping part of the two parts of the padlock assembly 3. By locking with the lock head 4, the disassembly prevention management of the filling port can be achieved.

[0019] In this embodiment, the filling port connector 1 is provided with an installation hole, and the installation hole is provided with an internal thread. The plug 2 is provided with an external thread that matches the internal thread. The internal and external threads are matched. After the plug 2 is tightened, the sealing performance is ensured. The pitch of the internal thread in the installation hole and the external thread on the plug 2 are both fine threads.

[0020] In this embodiment, the padlock assembly 3 includes a Z-shaped fixing plate 31 connected to the plug 2 and a fixing ring 32 connected to the filling port connector 1. The fixing plate 31 and the fixing ring 32 are made of 304 stainless steel. The 304 stainless steel provides high-strength support and is resistant to impact, vibration and corrosion in the outdoor environment. One end of the Z-shaped fixing plate 31 is connected and fixed to the bottom surface of the plug 2 by a self-tapping screw. The self-tapping screw fixing method can prevent violent removal (the plug body must be damaged to separate the hanger). The self-tapping screw connection does not require pre-embedded nuts, reducing the processing complexity. If damaged, the hanger can be replaced separately without scrapping the entire plug 2, making installation and maintenance convenient. The other end of the Z-shaped fixing plate 31 is provided with a through hole for cooperating with the fixing ring 32 to allow the lock head 4 to pass through and lock.

[0021] In this embodiment, the Z-shaped structure of the fixing plate 31 forms a three-dimensional spatial lock, ensuring that the fixing plate 31 and the fixing ring 32 completely overlap after the plug is tightened. They can only be fixed by the locking head 4 and cannot be pried open or rotated apart with simple tools, thus providing high anti-disassembly security. The Z-shaped bending design of the fixing plate 31 can adapt to the different installation positions of filling port connectors 1 and plugs 2 of different sizes. Precise alignment can be achieved by adjusting the bending angle, resulting in high adaptability and flexibility. The Z-shaped structure of the fixing plate 31 can disperse stress: when locking, external force is dispersed to the plug base through the bending point, avoiding stress concentration that could lead to deformation or breakage. The Z-shaped plate structure of the fixing plate 31 can be mass-produced using stamping and bending processes. The fixing ring uses a standard ring-shaped part, resulting in low processing cost, high consistency, and controllable cost.

[0022] In this embodiment, the open ring structure of the retaining ring 32 allows the locking head to be inserted from multiple angles, facilitating operation. The retaining ring 32 is welded to the outside of the filling port connector, has no moving parts, and its lifespan is synchronized with the piping system.

[0023] In this embodiment, the padlock assembly 3 is fixed to the bottom surface (non-sealing surface) of the plug 2, which does not affect the thread engagement and the sealing ring tightening effect, ensuring that the core sealing function of the filling port is not interfered with and that the sealing compatibility is high.

[0024] In this embodiment, the retaining ring is fixed to the outer wall of the filling port connector by welding or integral molding.

[0025] In this embodiment, the bending angles at both points of the fixing plate are within the range of 90° to 120°. In this embodiment, both the filling port connector 1 and the material conveying pipe 5 are made of stainless steel, which is corrosion-resistant and has high strength. The filling port connector 1 and the material conveying pipe are sealed together by welding, which has high reliability.

[0026] In this embodiment, the plug 2 is made of food-grade PP (polypropylene), which meets FDA standards, is chemically resistant and non-toxic, and has a sealing ring at the connection between the plug 2 and the filling port connector 1, which can further ensure good sealing at the filling port and prevent dust and rainwater from entering.

[0027] In this embodiment, the top of the plug is provided with an anti-slip structure that facilitates tool clamping or manual screwing. The anti-slip structure is one of knurling, polygonal prism, or screwing fin.

[0028] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A food-grade carbon dioxide filling port protective device, characterized in that, Includes filling port connector, plug, padlock assembly and lock cylinder, The filling port connector is fixed to the end of the material conveying pipe, and the plug is detachably and sealingly connected to the filling port connector. One part of the padlock assembly is fixed to the filling port connector, and the other part of the padlock assembly is fixed to the plug. The lock head is located at the overlap of the two parts of the padlock assembly.

2. The food-grade carbon dioxide filling port protection device according to claim 1, characterized in that, The filling port connector is provided with a mounting hole, and the mounting hole is provided with an internal thread. The plug is provided with an external thread that matches the internal thread.

3. The food-grade carbon dioxide filling port protection device according to claim 1, characterized in that, Both the internal thread in the mounting hole and the external thread on the plug have fine-pitch threads.

4. The food-grade carbon dioxide filling port protection device according to claim 1, characterized in that, The padlock assembly includes a Z-shaped fixing plate connected to the plug and a fixing ring connected to the filling port connector. One end of the Z-shaped fixing plate is connected and fixed to the bottom surface of the plug, and the other end of the Z-shaped fixing plate is provided with a through hole for cooperating with the fixing ring so that the lock head can pass through and lock.

5. The food-grade carbon dioxide filling port protection device according to claim 4, characterized in that, One end of the Z-shaped fixing plate is connected to the bottom surface of the plug by a self-tapping screw.

6. The food-grade carbon dioxide filling port protection device according to claim 4, characterized in that, The retaining ring is fixed to the outer wall of the filling port connector by welding or integral molding.

7. The food-grade carbon dioxide filling port protection device according to claim 4, characterized in that, The bending angles of the two points of the fixing plate are both within the range of 90° to 120°.

8. The food-grade carbon dioxide filling port protective device according to any one of claims 1-7, characterized in that, The filling port connector is sealed to the material conveying pipe by welding.

9. The food-grade carbon dioxide filling port protective device according to any one of claims 1-7, characterized in that, A sealing ring is provided at the connection between the plug and the filling port connector.

10. The food-grade carbon dioxide filling port protective device according to any one of claims 1-7, characterized in that, The top of the plug is provided with an anti-slip structure that facilitates tool clamping or manual screwing. The anti-slip structure is one of knurling, polygonal prism, or screwing blade.

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