Overflow box seal cap structure with pressure relief channel

Abstract

The utility model provides a sealed cover structure of overflow tank with pressure relief channel, it includes the tank top, the top end swing joint of tank top has two opposite setting tank door, be connected with the pressure relief mechanism on the door body of tank door, the pressure relief mechanism includes the pressure relief pipe connected on the door body of tank door, the one -way air -admitting subassembly connected in the bottom of pressure relief pipe, and the exhaust pipe connected with a plurality of pressure relief pipes on tank door. The utility model effectively controls the pressure relief pressure, prevents the sealed cover damage caused by excessively high pressure, avoids the liquid back flow and reverse air leakage simultaneously, guarantees the stability of the tank environment.

Description

Technical Field

[0001] This utility model mainly relates to the technical field of overflow boxes, specifically to an overflow box sealing cover structure with a pressure relief channel. Background Technology

[0002] In industrial production, liquid storage, and transportation, overflow tanks are common container equipment, and the reliability of their sealing cap structure directly affects their safety and efficiency. Traditional overflow tanks often use a single mechanical seal, achieving a seal solely through a tight fit between the cap and the tank body. When the liquid inside the tank experiences pressure changes due to temperature variations, level fluctuations, or external impacts, leaks and incomplete seals can easily occur.

[0003] Although some overflow boxes are equipped with pressure relief structures, they have obvious defects: First, the pressure relief channel is poorly designed, often a single channel, resulting in low pressure relief efficiency and difficulty in controlling the pressure relief, which can easily cause the cover to deform due to a sudden increase in pressure; Second, the pressure relief function and the locking function of the sealing cover are independent of each other. When the pressure inside the box is too high and the pressure relief is completed, the sealing cover may be accidentally opened due to external force or vibration, which cannot guarantee the sealing performance for subsequent use; Third, the sealing performance of the one-way ventilation component is insufficient, often resulting in reverse leakage or liquid backflow, which affects the stability of the environment inside the box. Summary of the Invention

[0004] This utility model mainly provides an overflow box sealing cover structure with a pressure relief channel to solve the technical problems mentioned in the background art.

[0005] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows:

[0006] The overflow tank sealing cover structure with pressure relief channel includes a tank top, and two oppositely arranged tank doors are movably connected to the top of the tank top. Pressure relief mechanisms are connected to the door bodies of the tank doors.

[0007] The pressure relief mechanism includes a pressure relief pipe connected to the door body of the enclosure, a one-way ventilation assembly connected to the bottom end of the pressure relief pipe, and an exhaust pipe connected to multiple pressure relief pipes on the enclosure door.

[0008] Furthermore, the two sides of the door are connected to a resistance-increasing mechanism, which is connected to the output end of the pressure relief mechanism.

[0009] Furthermore, the one-way ventilation assembly includes a spring connected to the body of the pressure relief pipe, and a sealing ball is connected to the bottom end of the spring.

[0010] Furthermore, a connecting mechanism is provided between the resistance increasing mechanism and the pressure relief mechanism. The connecting mechanism includes a first delivery pipe connected to the input end of the resistance increasing mechanism and a second delivery pipe connected to the input end of the first delivery pipe. The second delivery pipe is connected to the output end of the pressure relief mechanism.

[0011] Furthermore, the exhaust pipe is connected to the second delivery pipe.

[0012] Furthermore, a handle is attached to the outer surface of the door.

[0013] Furthermore, the bottom end of the pressure relief pipe is connected to a convex ring, and the top end of the convex ring can contact the sealing ball.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] Firstly, the pressure relief mechanism of this utility model has multiple pressure relief pipes that cooperate with the exhaust pipe, increasing the flow area of ​​the pressure relief channel and improving the pressure relief efficiency. The spring and sealing ball in the one-way ventilation component can accurately open the pressure relief channel when the pressure inside the box reaches the set value, and close it in time after the pressure returns to normal, effectively controlling the pressure relief pressure, preventing the sealing cover from being damaged due to excessive pressure, and avoiding liquid backflow and reverse air leakage, thus ensuring the stability of the environment inside the box.

[0016] Secondly, the resistance-increasing mechanism and the pressure-relief mechanism of this utility model are connected by a connecting mechanism. When the pressure-relief mechanism is working, some gas enters the resistance-increasing mechanism through the delivery pipe, causing the resistance-increasing mechanism to generate resistance that hinders the opening of the box door. This realizes the linkage control of pressure relief and resistance increase, preventing the sealing cover from opening accidentally after pressure relief, and further enhancing the sealing reliability of the sealing cover.

[0017] The present invention will be explained in detail below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the internal structure of the pressure relief pipe of this utility model;

[0020] Figure 3 This is a schematic diagram of the drag-increasing mechanism of this utility model.

[0021] In the diagram: 10, top of the enclosure; 20, door of the enclosure; 21, handle; 30, pressure relief mechanism; 31, pressure relief pipe; 32, one-way ventilation assembly; 321, spring; 322, sealing ball; 323, convex ring; 33, exhaust pipe; 40, resistance increasing mechanism; 41, groove; 411, convex strip; 42, airbag; 421, high-pressure relief valve; 422, exhaust port; 50, connecting mechanism; 51, first delivery pipe; 52, second delivery pipe. Detailed Implementation

[0022] To facilitate understanding of this utility model, a more comprehensive description of the utility model will be given below with reference to the accompanying drawings, which show several embodiments of the utility model. However, the utility model can be implemented in different forms and is not limited to the embodiments described in the text. On the contrary, these embodiments are provided to make the disclosure of the utility model more thorough and comprehensive.

[0023] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of this invention is for the purpose of describing particular embodiments only and is not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0025] This application provides an overflow tank sealing cover structure with a pressure relief channel, as shown in the schematic diagram below. Figure 1-3 As shown. The overflow tank sealing cover structure with pressure relief channel includes a tank door 20, and resistance increasing mechanism 40 is connected to both sides of the tank door 20. The resistance increasing mechanism 40 is connected to the output end of the pressure relief mechanism 30.

[0026] In this embodiment, when the pressure inside the enclosure increases, the pressure relief mechanism 30 opens and releases gas. The released gas enters the resistance-increasing mechanism 40 through the connecting passage, causing the resistance-increasing mechanism 40 to generate resistance that prevents the enclosure door 20 from opening. The gas can cause the elastic component in the resistance-increasing mechanism to expand, creating friction or engagement with the enclosure top 10 or other components. By using the gas released by the pressure relief mechanism to drive the resistance-increasing mechanism 40, the difficulty of opening the enclosure door is increased when the internal pressure of the enclosure is high, preventing the enclosure door from opening accidentally due to sudden release of internal pressure, thus improving safety. At the same time, it achieves linkage between pressure release and door protection, requiring no additional power source and resulting in a more compact structure.

[0027] Optionally, such as Figure 2 and Figure 3 As shown, the one-way ventilation assembly 32 includes a spring 321 connected to the body of the pressure relief pipe 31, and a sealing ball 322 is connected to the bottom end of the spring 321.

[0028] In this embodiment, when the pressure inside the chamber is within the normal range, the elastic force of the spring 321 pushes the sealing ball 322 to tightly adhere to the sealing part of the pressure relief pipe 31, preventing gas flow. When the pressure inside the chamber rises to a set threshold, the gas pressure overcomes the elastic force of the spring 321, pushing the sealing ball 322 upwards, and the gas is discharged through the pressure relief pipe 31. After the pressure decreases, the spring 321 returns to its original position, and the sealing ball 322 re-seals, achieving one-way ventilation. Through the cooperation of the spring and the sealing ball, the pressure relief pressure is precisely controlled, ensuring that the chamber remains sealed under normal pressure and automatically relieves pressure when overpressure occurs, protecting the chamber structure. The one-way design prevents external gas or impurities from entering the chamber in reverse, maintaining a stable internal environment, and is simple in structure and highly responsive.

[0029] Optionally, such as Figure 2 and Figure 3 As shown, a connecting mechanism 50 is connected between the resistance increasing mechanism 40 and the pressure relief mechanism 30. The connecting mechanism 50 includes a first conveying pipe 51 connected to the input end of the resistance increasing mechanism 40 and a second conveying pipe 52 connected to the input end of the first conveying pipe 51. The second conveying pipe 52 is connected to the output end of the pressure relief mechanism 30.

[0030] In this embodiment, the gas discharged from the pressure relief mechanism 30 is sequentially transported to the resistance-increasing mechanism 40 through the second delivery pipe 52 and the first delivery pipe 51. The connecting mechanism 50 serves as the gas transmission path, forming a closed-loop linkage between the pressure relief mechanism and the resistance-increasing mechanism. The diameter and length of the first delivery pipe 51 and the second delivery pipe 52 can be designed according to the gas flow requirements to ensure stable gas transmission. The connecting mechanism provides a reliable gas transmission channel for the pressure relief mechanism and the resistance-increasing mechanism, ensuring the stability and timeliness of their linkage. The modular pipeline design facilitates installation, disassembly, and maintenance, and the pipeline layout can be adjusted according to actual needs to adapt to different housing structures, improving the overall flexibility of the device.

[0031] Optionally, such as Figure 2 and Figure 3 As shown, the exhaust pipe 33 is connected to the second delivery pipe 52.

[0032] In this embodiment, part of the gas discharged by the pressure relief mechanism 30 is directly discharged to the external environment through the exhaust pipe 33, while the other part is diverted through the exhaust pipe 33 to the second delivery pipe 52, thereby driving the drag-increasing mechanism 40. The exhaust pipe 33 simultaneously serves the dual function of direct exhaust and supplying gas to the drag-increasing mechanism, and gas diversion is achieved through the internal structure or pipe diameter design. This allows for the graded utilization of gas, ensuring timely pressure relief of the housing while providing power to the drag-increasing mechanism, thus improving energy utilization efficiency. It eliminates the need for additional gas supply pipes, simplifying the overall structure, reducing the number of components, lowering costs, and ensuring that the exhaust and drag-increasing functions do not interfere with each other.

[0033] Optionally, such as Figure 2 and Figure 3 As shown, a handle 21 is attached to the outer surface of the door 20.

[0034] In this embodiment, the handle 21 is connected to the outer surface of the door 20 via a fixing structure such as screws or welding. The user can open and close the door by applying pulling or pushing force by gripping the handle. The handle's shape is ergonomically designed for easy force application. It provides a convenient point of force application for door operation, reducing the difficulty of opening and closing the door and improving the user experience. Especially when the resistance-increasing mechanism is in operation, the handle can increase the lever arm, making it easier for the user to overcome resistance and open the door, while avoiding wear or contamination that may be caused by direct contact with the door surface.

[0035] Optionally, such as Figure 2 and Figure 3 As shown, the bottom end of the pressure relief pipe 31 is connected to a convex ring 323, and the top end of the convex ring 323 can contact the sealing ball 322.

[0036] In this embodiment, the convex ring 323 forms an annular sealing surface at the bottom end of the pressure relief pipe 31. When the sealing ball 322 moves downward under the action of the spring 321, it fits tightly against the top of the convex ring 323, achieving a seal through the contact between the spherical surface and the annular surface, preventing gas leakage. When the gas pressure pushes the sealing ball 322 upward, the sealing ball separates from the convex ring, and the gas flows through the gap between them. The convex ring increases the sealing area between the sealing ball and the pressure relief pipe, improving sealing reliability and reducing gas leakage under normal pressure. The annular sealing surface design ensures that the sealing ball is subjected to uniform force, extending the service life of the component, while ensuring smooth gas flow during pressure relief and avoiding airflow turbulence caused by irregular sealing surfaces.

[0037] Optionally, such as Figure 2 and Figure 3As shown, the two sides of the box door 20 are connected to the resistance increasing mechanism 40; the resistance increasing mechanism 40 includes a groove 41 provided at the top of the box top 10, and an airbag 42 that engages with the groove 41. The airbag 42 is connected to the door body of the box door 20.

[0038] In this embodiment, when the pressure inside the box increases, the gas discharged by the pressure relief mechanism 30 enters the airbag 42. After the airbag inflates, it tightly engages with the groove 41 on the box top 10, increasing the resistance to opening the box door 20 by utilizing the friction or mechanical clamping force between the airbag and the groove. When the pressure decreases, the airbag deflates and contracts, separating from the groove, and the resistance disappears. The engagement structure between the airbag and the groove provides uniform and adjustable resistance, automatically adjusting the resistance according to the gas pressure; the higher the pressure, the greater the resistance, effectively preventing the box door from opening accidentally. The airbag material is soft, making it less likely to damage the box top or door when in contact with the groove, while also providing good cushioning to reduce impact noise during opening / closing.

[0039] Optionally, such as Figure 2 and Figure 3 As shown, a pressure relief mechanism 30 is connected to the door body of the box door 20, and the pressure relief mechanism 30 is connected to the resistance increasing mechanism 40.

[0040] In this embodiment, the pressure relief mechanism 30 on the door 20 directly monitors the pressure inside the enclosure. When the pressure exceeds the limit, the discharged gas is directly transmitted to the resistance-increasing mechanism 40, driving the resistance-increasing mechanism to perform actions such as inflating the airbag and pressing the friction plates, thus creating resistance to opening the door. The connection path between the pressure relief mechanism and the resistance-increasing mechanism is short, resulting in a fast response speed. Integrating the pressure relief mechanism onto the door shortens the distance between pressure monitoring and resistance-increasing action, improves the linkage response speed, and ensures that the door is prevented from opening in time when the pressure rises sharply. The direct connection between the two reduces intermediate transmission links, lowers the probability of failure, improves the overall reliability of the device, and simplifies the structural design of other parts such as the top of the enclosure.

[0041] Optionally, such as Figure 2 and Figure 3 As shown, a protrusion 411 is connected to the groove 41, and the protrusion 411 is symmetrically arranged in the groove 41.

[0042] In this embodiment, the protrusion 411 forms a raised structure within the groove 41. When the airbag 42 is inflated, it comes into close contact with the protrusion, which embeds into the surface of the airbag, increasing the friction and mechanical engagement between the airbag and the groove, further enhancing the drag-increasing effect. The symmetrically arranged protrusions ensure even force distribution on the airbag, avoiding skew caused by unilateral force. The protrusions significantly improve the engagement strength between the airbag and the groove, preventing the airbag from slipping under force and ensuring the stability of the drag-increasing mechanism. The symmetrical design ensures uniform resistance distribution, reducing deformation or damage to the door caused by uneven force, and extending the service life of the device.

[0043] Optionally, such as Figure 2 and Figure 3 As shown, the top of the airbag 42 is provided with a high-pressure relief valve 421, which is inserted into the door of the box door 20.

[0044] In this embodiment, when the air pressure inside the airbag 42 exceeds a set safety value, the high-pressure relief valve 421 automatically opens to release excess gas, preventing the airbag from rupturing due to overpressure. The relief valve is plugged into the door 20 for easy installation, replacement, and maintenance, while ensuring that the venting direction points outwards to the door, preventing gas backflow from affecting the internal environment of the enclosure. The high-pressure relief valve provides overpressure protection for the airbag, preventing damage from excessive inflation due to malfunction of the pressure relief mechanism, thus improving the safety of the device. The plug-in design makes the replacement of the relief valve more convenient, reducing maintenance costs, while ensuring that the airbag pressure is always within a safe range, guaranteeing the stability of the drag-increasing effect.

[0045] Optionally, such as Figure 2 and Figure 3 As shown, the input end of the airbag 42 is connected to the first delivery pipe 51.

[0046] In this embodiment, one end of the first delivery pipe 51 is sealed to the air inlet of the airbag 42, and the other end is connected to the pressure relief mechanism 30 through the connecting mechanism 50. The gas discharged by the pressure relief mechanism is stably delivered to the airbag 42 through the first delivery pipe 51, causing the airbag to inflate. The pipe interface adopts a sealed design to prevent gas leakage. The first delivery pipe provides a stable gas source channel for the airbag, ensuring that the gas discharged by the pressure relief mechanism enters the airbag efficiently, ensuring the response speed and effect of the drag-increasing mechanism; the sealed connection design reduces gas loss and improves energy transmission efficiency, while the pipe material can be selected according to the gas properties, such as corrosion resistance, to improve the adaptability of the device.

[0047] Optionally, such as Figure 2 and Figure 3 As shown, the bottom of the airbag 42 is provided with multiple exhaust holes 422.

[0048] In this embodiment, when the pressure inside the chamber decreases, the pressure relief mechanism 30 stops supplying air, and the vent 422 at the bottom of the airbag 42 automatically discharges the internal gas. The airbag contracts and separates from the groove 41 on the top of the chamber 10, relieving resistance to the chamber door 20. The diameter and number of vent holes can be designed according to the volume of the airbag to control the exhaust speed. The vent holes enable automatic air release from the airbag, ensuring that the resistance-increasing mechanism promptly relieves the resistance after the chamber pressure returns to normal, facilitating normal opening of the chamber door by the user. The even distribution of multiple vent holes makes the airbag contract more smoothly, avoiding airbag deformation or jamming caused by excessively rapid local exhaust, thus improving the reliability and service life of the device.

[0049] The present invention has been described above by way of example in conjunction with the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvement made by adopting the inventive concept and technical solution of the present invention, or the direct application of the inventive concept and technical solution of the present invention to other occasions without modification, shall be within the protection scope of the present invention.

Claims

1. An overflow tank sealing cover structure with a pressure relief channel, including a tank top (10), characterized in that, The top of the box top (10) is movably connected to two oppositely arranged box doors (20), and a pressure relief mechanism (30) is connected to the door body of the box door (20). The pressure relief mechanism (30) includes a pressure relief pipe (31) connected to the door body of the box door (20), a one-way ventilation assembly (32) connected to the bottom end of the pressure relief pipe (31), and an exhaust pipe (33) connected to multiple pressure relief pipes (31) on the box door (20). The one-way ventilation assembly (32) includes a spring (321) connected to the body of the pressure relief pipe (31), and a sealing ball (322) is connected to the bottom end of the spring (321).

2. The overflow tank sealing cover structure with pressure relief channel according to claim 1, characterized in that, The two sides of the box door (20) are connected to a resistance increasing mechanism (40). The resistance increasing mechanism (40) is connected to the output end of the pressure relief mechanism (30). The resistance increasing mechanism (40) includes a groove (41) at the top of the box top (10) and an airbag (42) that engages with the groove (41). The airbag (42) is connected to the door body of the box door (20).

3. The overflow tank sealing cover structure with pressure relief channel according to claim 2, characterized in that, A connecting mechanism (50) is connected between the resistance increasing mechanism (40) and the pressure relief mechanism (30). The connecting mechanism (50) includes a first delivery pipe (51) connected to the input end of the resistance increasing mechanism (40) and a second delivery pipe (52) connected to the input end of the first delivery pipe (51). The second delivery pipe (52) is connected to the output end of the pressure relief mechanism (30).

4. The overflow tank sealing cover structure with pressure relief channel according to claim 1, characterized in that, The exhaust pipe (33) is connected to the second delivery pipe (52) through the exhaust pipe (33).

5. The overflow tank sealing cover structure with pressure relief channel according to claim 1, characterized in that, A handle (21) is attached to the outer surface of the box door (20).

6. The overflow tank sealing cover structure with pressure relief channel according to claim 1, characterized in that, The bottom end of the pressure relief pipe (31) is connected to a convex ring (323), and the top end of the convex ring (323) can contact the sealing ball (322).

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