Pressure relief impact-protected tank cap

Abstract

This utility model discloses a can lid with pressure relief and impact protection, including a partial structure of the can body. A mounting base and a linkage assembly are provided on the partial structure of the can body. A connecting beam is rotatably connected to the mounting base. A crossbeam and a mounting beam are connected to the linkage assembly. A water-blocking cover is installed at one end of the mounting beam. A can lid assembly is installed on the crossbeam. The linkage assembly allows the water-blocking cover and the can lid assembly to rotate synchronously. This utility model, through the linkage assembly, water-blocking cover, can lid assembly, pressure relief structure, and air replenishment structure, allows the water-blocking cover to block splashing liquid during transport, preventing direct impact from the liquid on the can lid assembly, ensuring the can lid assembly is sealed and preventing liquid leakage. Simultaneously, the pressure relief structure and air replenishment structure work together to achieve dynamic pressure balance inside the can, avoiding damage to the can body due to overpressure and deformation of the can body or difficulty in opening the can lid assembly due to negative pressure, thus ensuring safe storage and transportation of the can.

Description

Technical Field

[0001] This utility model mainly relates to the field of liquid tank technology, specifically a tank cover with pressure relief and impact protection. Background Technology

[0002] Liquid tanks, as core equipment for the storage and transportation of liquid materials, are widely used in many industries such as chemical, food, pharmaceutical, and logistics. The sealing performance and protective effect of the tank cover assembly are directly related to the safety of material storage, the reliability of transportation, and the long service life of the equipment.

[0003] Currently, traditional liquid tank lid assemblies mostly adopt a flat or simple arc-shaped structure design. Sealing is achieved through seals (such as rubber gaskets or sealing rings) between the lid assembly and the short cylindrical section of the tank. During transportation, the liquid inside the tank may slosh and splash due to road bumps and starting / stopping inertia, resulting in direct and continuous impact on the bottom of the lid assembly. Long-term impact can easily cause displacement and deformation of the sealing surface between the lid assembly and the short cylindrical section, disrupting the tight seal between the seal and the sealing surface. Furthermore, liquid impact accelerates the wear of the seals, shortens their service life, and ultimately leads to lid assembly seal failure, causing liquid leakage. This leakage results in material loss, and if the tank stores corrosive, flammable, explosive, or toxic liquids, it can also cause serious consequences such as environmental pollution and safety accidents, posing a significant threat to personnel safety and the surrounding environment. Utility Model Content

[0004] This utility model addresses the problem of overly simplistic solutions in existing technologies by providing a significantly different approach. It primarily offers a pressure-relief and impact-resistant tank cover. This addresses the issue raised in the background section where traditional liquid tank cover assemblies are mostly planar or simple arc-shaped structures. During transport, due to road bumps and start-stop inertia, the liquid inside the tank easily sloshes and splashes, directly and continuously impacting the bottom of the cover assembly. Prolonged impact causes displacement and deformation of the sealing surface between the cover assembly and the short cylindrical section, disrupting the sealing fit and accelerating wear and aging of the seals, shortening their lifespan. This leads to sealing failure and liquid leakage. Leakage not only causes material loss but, if the liquid inside the tank is corrosive, flammable, explosive, or toxic, can also cause environmental pollution and safety accidents, seriously threatening personnel safety and the surrounding environment.

[0005] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: A tank lid with pressure relief and impact protection includes a partial structure of the tank body. The partial structure of the tank body is provided with a mounting base and a linkage assembly. The mounting base is provided with a fixing rod. The linkage assembly is connected to a crossbeam and a mounting beam. A water baffle is installed at one end of the mounting beam. A tank lid assembly is installed on the crossbeam. The linkage assembly enables the water baffle and the tank lid assembly to rotate synchronously. A connecting beam is rotatably connected to the crossbeam, and one end of the connecting beam is provided with a hook for hooking with the fixing rod on the mounting base.

[0006] More preferably, the can lid assembly includes a lid with two vent holes, each vent hole having a first spring, and each of the two first springs having a vent block. The vent block is slidably engaged with the vent hole, and the vent block and the first spring are set as a group, with the two groups of first springs and vent blocks installed in opposite directions.

[0007] More preferably, a screw is fixedly installed on the cover, and a round hole matching the size of the screw is opened on the crossbeam; after the cover passes through the round hole of the crossbeam through its own screw, the screw and the nut are used to achieve a detachable fixed connection with the crossbeam, and a second spring is provided between the cover and the crossbeam.

[0008] More preferably, a pin seat is provided at one end of the crossbeam near the connecting beam, and a hole is provided on the connecting beam that matches the position and size of the pin seat; and a insertion hole is provided on the pin seat for inserting a pin, so as to realize the detachable locking of the connecting beam and the mounting base.

[0009] More preferably, the linkage component includes a shell that is installed through a part of the tank structure, a cover plate is installed at the open end of the shell, and a first connecting rod and a second connecting rod are rotatably connected inside the shell. A first gear is provided on the first connecting rod, and a second gear is provided on the second connecting rod, and the first gear and the second gear are meshed and connected for transmission.

[0010] More preferably, the water-blocking cover is configured as a frustum-shaped structure, with a rubber ring circumferentially arranged on the top end face of the water-blocking cover, and a plurality of evenly distributed circular holes on the bottom end face of the water-blocking cover.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: The system utilizes a linkage assembly, a water-blocking cover, and a tank lid assembly. The water-blocking cover features a frustum-shaped structure combined with an elastic rubber ring circumferentially positioned at the top. After the tank lid assembly is closed with the short cylindrical section, the rubber ring adheres to the inner wall of the tank, forming a protective structure. When liquid inside the tank splashes and impacts due to transportation shaking or other reasons, the water-blocking cover can deflect the liquid, preventing it from directly impacting the tank lid assembly. Compared to traditional filling caps, this system prevents problems such as displacement, deformation, and wear of the sealing surface between the tank lid assembly and the short cylindrical section caused by liquid impact, ensuring the sealing effect of the tank lid assembly and preventing the risk of liquid leakage due to seal failure. This provides a guarantee for the safe storage or transportation of the tank. Furthermore, through the pressure relief and air replenishment structures, when the tank is overpressurized, the pressure pushes the corresponding vent block upwards, stretching the first spring, and gas is discharged through the vent block's holes to relieve pressure. After the pressure returns to normal, the spring force causes the vent block to reset and seal the vent hole. When the tank is underpressurized, external air pressure pushes the corresponding vent block downwards, stretching the first spring, and external gas enters through the vent block's holes to replenish air. After the pressure recovers, the spring pulls the vent block back to reset and seal the vent hole. The pressure relief and air replenishment structures work together to achieve dynamic balance of air pressure inside the tank. This avoids safety hazards such as tank structural damage and material leakage caused by overpressure, and also prevents problems such as tank deformation or difficulty in opening the tank cover assembly caused by negative pressure, ensuring that the tank is in a stable and safe operating state.

[0012] The present invention will be explained in detail below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a front view structural diagram of the present invention; Figure 3 This is a schematic diagram of the structure of this utility model from below; Figure 4 This is a schematic diagram of the full cross-sectional structure of the linkage component of this utility model; Figure 5 This is a fully enlarged cross-sectional structural diagram of the can lid assembly of this utility model; Figure 6 In this utility model Figure 5 Enlarged structural diagram at point A in the diagram; Figure 7 This is an enlarged schematic diagram of the connecting beam and crossbeam structure in this utility model.

[0014] Numbering on the map: 1. Tank body partial structure; 2. Mounting base; 3. Linkage assembly; 301. Shell; 302. Cover plate; 303. First connecting rod; 304. Second connecting rod; 305. First gear; 306. Second gear; 4. Connecting beam; 5. Crossbeam; 6. Mounting beam; 7. Water baffle; 8. Pin seat; 9. Tank cover assembly; 901. Cover; 902. Vent hole; 903. First spring; 904. Vent block; 10. Second spring. Detailed Implementation

[0015] 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.

[0016] 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.

[0017] Please refer to the appendix carefully. Figure 1-7 The tank cover with pressure relief and impact protection includes a partial structure 1 of the tank body. The partial structure 1 of the tank body is provided with a mounting base 2 and a linkage component 3. The mounting base 2 is provided with a fixing rod. The linkage component 3 is connected to a crossbeam 5 and a mounting beam 6. A water baffle 7 is installed at one end of the mounting beam 6. The tank cover assembly 9 is installed on the crossbeam 5. The water baffle 7 and the tank cover assembly 9 can be rotated synchronously through the linkage component 3. A connecting beam 4 is rotatably connected to the crossbeam 5, and one end of the connecting beam 4 is provided with a hook for hooking with the fixing rod on the mounting base 2.

[0018] In this embodiment, as Figure 1 , Figure 5 and Figure 6 As shown, the can lid assembly 9 includes a lid 901, which has two vent holes 902. Each vent hole 902 is provided with a first spring 903, and each of the two first springs 903 is provided with a vent block 904. The vent block 904 is slidably engaged with the vent hole 902, and the vent block 904 and the first spring 903 are set as a group. The two groups of first springs 903 and vent blocks 904 are installed in opposite directions. Several holes are provided on the periphery of the vent block 904.

[0019] When the pressure inside the tank exceeds the preset threshold, the pressure will push the corresponding vent block 904 to move upward, the first spring 903 will be stretched, and the high-pressure gas inside the tank will be discharged through several holes on the vent block 904 to complete the pressure relief; after the pressure drops to a safe range, the elastic tension of the first spring 903 will cause the vent block 904 to block the vent hole 902, ensuring the normal sealing state of the tank.

[0020] When the pressure inside the tank is lower than the preset working threshold, the external air pressure will push the corresponding vent block 904 downward, the first spring 903 will be stretched, and the external gas will be discharged along several holes on the vent block 904 to realize the gas replenishment function. After the pressure inside the tank returns to the safe range, the first spring 903 pulls the vent block 904 to block the vent hole 902 to ensure the normal sealing state of the tank. The pressure relief threshold and the gas replenishment threshold are different, which can be achieved by the pre-tightening force of the first spring 903 or by replacing the first spring 903 with a different elastic coefficient. A dustproof net can be installed on the vent hole 902 for gas replenishment.

[0021] In this embodiment, as Figure 1 , Figure 2 and Figure 5 As shown, a screw is fixedly installed on the cover 901, and a round hole matching the size of the screw is opened on the crossbeam 5. After the cover 901 passes through the round hole of the crossbeam 5 through its own screw, it is detachably fixed to the crossbeam 5 by the thread engagement of the nut and the screw. A second spring 10 is provided between the cover 901 and the crossbeam 5. During assembly, the can cover assembly 9 passes through the round hole of the crossbeam 5 through its own screw, and is detachably fixed to the crossbeam 5 by the thread engagement of the nut and the screw. This ensures connection stability and facilitates later maintenance and disassembly. When the can cover assembly 9 is closed with the short cylindrical section, the can cover assembly 9 is subjected to the elastic force of the second spring 10, which can improve the sealing performance of the second spring 10 after it is closed with the short cylindrical section.

[0022] In this embodiment, as Figure 1 , Figure 2 , Figure 3 and Figure 7 As shown, a pin seat 8 is provided on one end of the crossbeam 5 near the connecting beam 4. The connecting beam 4 has a hole that matches the position and size of the pin seat 8. The pin seat 8 also has a insertion hole for inserting a pin, so as to realize the detachable locking of the connecting beam 4 and the mounting base 2. When the can lid assembly 9 is closed with the short cylindrical section, the connecting beam 4 is hooked to the fixing rod on the mounting base 2. Subsequently, the pin only needs to be inserted into the hole on the pin seat 8, so that the can lid assembly 9 can be quickly closed with the short cylindrical section, improving the convenience of using the can lid.

[0023] In this embodiment, as Figure 1 , Figure 2 and Figure 3As shown, the linkage component 3 includes a shell 301 that is installed through the partial structure 1 of the tank body. A cover plate 302 is installed at the open end of the shell 301. A first connecting rod 303 and a second connecting rod 304 are rotatably connected inside the shell 301. A first gear 305 is provided on the first connecting rod 303, and a second gear 306 is provided on the second connecting rod 304. The first gear 305 and the second gear 306 are meshed and connected for transmission. A crossbeam 5 is connected to the first connecting rod 303, and a mounting beam 6 is connected to the second connecting rod 304. When the tank cover assembly 9 is opened or closed by the handle on the connecting beam 4, the mounting beam 6 is driven to rotate through the transmission of the first connecting rod 303, the first gear 305, the second gear 306, and the second connecting rod 304, thereby synchronously driving the water baffle 7 to rotate in the opposite direction to the rotation direction of the tank cover assembly 9.

[0024] In this embodiment, as Figure 1 , Figure 2 and Figure 3 As shown, the water baffle 7 is designed as a frustum-shaped structure. A rubber ring is circumferentially arranged on the top end face of the water baffle 7, and several evenly spaced circular holes are opened on the bottom end face of the water baffle 7. The hole diameter is preferably 1-3mm. When the tank cover assembly 9 is closed with the short cylindrical section of the tank body partial structure 1, the rubber ring on the water baffle 7 contacts the inner wall of the tank. When the liquid in the tank splashes due to shaking, impact, etc., the water baffle 7 can form a barrier to block the liquid and prevent the liquid from directly impacting the tank cover assembly 9. This can prevent the liquid impact from causing displacement, deformation, or damage to the sealing surface between the tank cover assembly 9 and the short cylindrical section. This ensures that the tank cover assembly 9 always maintains a reliable sealing effect and prevents liquid leakage caused by sealing failure. The several circular holes on the water baffle 7 allow the gas in the tank to be discharged through the pressure relief structure, and the gas outside the tank can enter the tank through the gas replenishment structure.

[0025] The specific operating procedure of this utility is as follows: First, when the can lid assembly 9 is rotated to the closed position aligned with the short cylindrical section of the tank body partial structure 1, the connecting beam 4 is then rotated by the handle on the connecting beam 4, so that the end hook of the connecting beam 4 is hooked with the fixing rod on the mounting base 2. At the same time, the pin seat 8 on the crossbeam 5 near the end of the connecting beam 4 passes through the pre-set hole on the connecting beam 4. Then, the operator inserts the pin into the insertion hole on the pin seat 8. The pin, together with the crossbeam 5, limits the connection beam 4, thus completing the locking. When it is necessary to open the can lid assembly 9, simply pull out the pin, rotate the connecting beam 4, so that the end hook of the connecting beam 4 is separated from the fixing rod on the mounting base 2. Then, lift one end of the crossbeam 5 by the connecting beam 4, which will drive the can lid assembly 9 and the water baffle 7 to rotate synchronously in opposite directions, thus completing the opening action.

[0026] After the tank cover assembly 9 is closed with the short cylindrical section of the tank body partial structure 1, the water baffle 7 is fitted against the inner wall of the tank. The water baffle 7 adopts a frustum-shaped structure design, with its maximum diameter being larger than the inner diameter of the short cylindrical section. An elastic rubber ring is fixedly installed circumferentially on the top end face. When closed, the rubber ring will fit tightly against the inner wall of the tank. During tank use, if the internal liquid splashes due to transportation shaking or other factors, the baffle 7, with its structure larger than the diameter of the short cylindrical section, directly blocks the splashed liquid, preventing it from directly impacting the upper tank cover assembly 9. The round holes on the baffle 7 also disperse and mitigate the impact of the liquid. This prevents liquid impact from causing displacement or deformation of the sealing surfaces between the tank cover assembly 9 and the short cylindrical section, thus ensuring a good seal between them. The water baffle 7 has several evenly spaced circular holes on its bottom end face, which allow gas in the lower part of the tank to flow smoothly through the holes to the space below the tank cover assembly 9, and then be discharged from the tank through the pressure relief structure on the tank cover assembly 9. Gas outside the tank can also enter the space below the tank cover assembly 9 under the action of the gas replenishment structure, and then flow into the lower part of the tank through the circular holes, providing a smooth gas flow channel for the pressure regulation function of the pressure relief structure and the gas replenishment structure. When the pressure inside the can gradually increases due to chemical reactions, temperature changes, or other reasons, and exceeds the preset safety threshold, the upward thrust generated by the high-pressure gas inside the can on the bottom of the corresponding vent block 904 will continuously increase. When this thrust exceeds the tension of the first spring 903 connected to the corresponding vent block 904, it will push the vent block 904 upward, and the high-pressure gas inside the can will be discharged through the holes on the periphery of the vent block 904 and the vent hole 902, thus completing the pressure relief. After the pressure drops to a safe range, the elastic tension of the first spring 903 will cause the vent block 904 to reset, resealing the vent hole 902. When the pressure inside the tank gradually decreases due to gas leakage, consumption, or temperature drop, and falls below the preset working threshold, the external air pressure will push the vent block 904 in the other direction to move downward, causing the first spring 903 to be stretched. External gas enters the tank through the holes in the vent block 904 and the vent hole 902, thus replenishing the gas. After the pressure inside the tank returns to a safe range, the first spring 903 pushes the vent block 904 to reset and seal the vent hole 902, thus replenishing the gas inside the tank and stabilizing the pressure inside the tank within the normal working range. In summary, this utility model, through the structural design of the water-blocking cover 7, can block liquid impact to ensure the sealing effect of the can lid assembly 9; and by relying on the synergistic effect of the pressure relief structure and the air replenishment structure, the pressure inside the can can be adjusted to keep the pressure within a safe and stable range.

[0027] 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. A tank cover with pressure relief and impact protection, comprising a partial structure of a tank body (1), characterized in that: The tank body partial structure (1) is provided with a mounting base (2) and a linkage component (3). The mounting base (2) is provided with a fixing rod. The linkage component (3) is connected with a crossbeam (5) and a mounting beam (6). A water baffle (7) is installed at one end of the mounting beam (6). A tank cover assembly (9) is installed on the crossbeam (5). The water baffle (7) and the tank cover assembly (9) can rotate synchronously through the linkage component (3). A connecting beam (4) is rotatably connected to the crossbeam (5), and a hook is provided at one end of the connecting beam (4) for hooking with the fixing rod on the mounting base (2).

2. The pressure-relief impact-attenuating canister cover of claim 1, wherein: The can lid assembly (9) includes a lid (901) with two vent holes (902) and a first spring (903) in each vent hole (902). Each of the two first springs (903) is provided with a vent block (904). The vent block (904) is slidably engaged with the vent hole (902). The vent block (904) and the first spring (903) are set as a group, and the two groups of first springs (903) and vent blocks (904) are installed in opposite directions.

3. The pressure-relief impact-attenuating canister cover of claim 2, wherein: A screw is fixedly installed on the cover (901), and a round hole matching the size of the screw is opened on the crossbeam (5); after the cover (901) passes through the round hole of the crossbeam (5) through its own screw, it is detachably fixed to the crossbeam (5) by using the threaded engagement of the nut and the screw; and a second spring (10) is provided between the cover (901) and the crossbeam (5).

4. The pressure-relief impact-attenuating canister cover of claim 1, wherein: A pin seat (8) is provided on one end of the crossbeam (5) near the connecting beam (4). The connecting beam (4) has a hole that matches the position and size of the pin seat (8). The pin seat (8) has a insertion hole for inserting a pin, so as to achieve detachable locking between the connecting beam (4) and the mounting base (2).

5. The pressure-relief impact-attenuating canister cover of claim 1, wherein: The linkage component (3) includes a shell (301) that is installed through the partial structure (1) of the tank body. A cover plate (302) is installed at the open end of the shell (301). A first connecting rod (303) and a second connecting rod (304) are rotatably connected inside the shell (301). A first gear (305) is provided on the first connecting rod (303), and a second gear (306) is provided on the second connecting rod (304). The first gear (305) and the second gear (306) are meshed and connected for transmission.

6. The pressure-relief impact-attenuating canister cover of claim 5, wherein: The water-blocking cover (7) is designed as a frustum-shaped structure. A rubber ring is provided around the top end face of the water-blocking cover (7), and several evenly spaced circular holes are provided on the bottom end face of the water-blocking cover (7).

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