Multifunctional manhole cover

Abstract

A multifunctional manhole cover comprises a cover body corresponding to a manhole of an oil tank, a breathing hole and an oil inlet hole are formed in the cover body, a corresponding breathing valve is installed at the position of the breathing hole, and a corresponding oil cover is installed at the position of the oil inlet hole. The manhole comprises a short pipe which is arranged on the side wall of the oil tank and communicated with an inner cavity of the oil tank, the side wall of the top face of the short pipe extends towards an outer ring in the circumferential direction to form a corresponding flange, a cover body of the manhole cover comprises a cover top plate which is arranged above the flange and corresponds to the flange, and a hollow cylindrical cover bottom ring with the upper end and the lower end opened is arranged below the cover top plate. The cover bottom ring corresponds to a short pipe of a manhole, the cover bottom ring extends into an inner cavity of the short pipe during installation and use, the top end of the side wall at an upper opening of the cover bottom ring is connected to the bottom face of the cover top plate, and the breathing hole and the oil inlet hole are both formed in the cover top plate. The oil tank has more diversified functions, is additionally provided with multiple safety protections, is better in stability, improves the balance of pressure inside and outside the oil tank, and is better in environmental adaptability.

Description

Technical Field

[0001] This utility model belongs to the field of manhole cover technology, and in particular relates to a multifunctional manhole cover for oil tanks. Background Technology

[0002] Manhole covers are an important component of oil tanks, typically installed at the manhole on the top of the tank. They are made of metal or alloy and allow personnel to easily access the tank for maintenance. However, traditional manhole covers are mostly single-function, only allowing personnel to enter and exit the tank. With the development of modern transportation, oil tankers can reach more and more distant places. In this process, oil tankers may encounter various uncontrollable factors, such as pressure changes caused by temperature and altitude variations. When the pressure inside the tank rises or falls due to changes in the external environment, if the balance of air pressure inside and outside the tank is not adjusted in time, it will affect the stability of the tank and thus endanger the transportation of oil. The single function of manhole covers can no longer meet the safety and reliability requirements of modern oil tank transportation. Utility Model Content

[0003] The purpose of this utility model is to provide a multifunctional manhole cover to solve the technical problem that the traditional manhole cover has a relatively simple function and can no longer meet the needs of modern oil tank transportation.

[0004] To achieve the above objectives, the specific technical solution of this utility model is as follows:

[0005] A multifunctional manhole cover includes a cover body corresponding to the manhole of an oil tank, the cover body being provided with a breather hole and an oil inlet hole, wherein a corresponding breather valve is installed at the breather hole and a corresponding oil cap is installed at the oil inlet hole.

[0006] The manhole includes a short pipe connected to the inner cavity of the oil tank sidewall. The top sidewall of the short pipe extends outward in a circumferential direction to form a corresponding flange. The manhole cover includes a top plate located above the flange and corresponding to it. Below the top plate is a cylindrical bottom ring with a hollow interior and openings at both the top and bottom. The bottom ring corresponds to the short pipe of the manhole. When installed and used, it extends into the inner cavity of the short pipe. The top of the sidewall at the upper opening of the bottom ring is connected to the bottom surface of the top plate. The breather hole and the oil inlet hole are both located on the top plate.

[0007] Furthermore, the breather hole and the oil inlet hole are both through holes that run vertically through the top plate corresponding to the inner cavity of the bottom ring. The oil inlet hole is equipped with a corresponding oil inlet pipe, and the side wall of the oil inlet hole is connected to the outer side wall of the oil inlet pipe. The two are fixedly and sealed together. The upper opening of the oil inlet pipe is its oil inlet, and the lower opening of the oil inlet pipe is its oil outlet. The oil cap is installed on the oil inlet pipe.

[0008] Furthermore, the top end of the oil inlet pipe extends upwards towards the top of the cover plate, and the oil cap is installed at the oil inlet at the upper end of the oil inlet pipe.

[0009] Furthermore, the bottom end of the oil inlet pipe extends downwards from the top cover plate, and a corresponding primary filter screen is installed at the oil outlet at its bottom end.

[0010] Furthermore, the bottom end of the oil inlet pipe is higher than the bottom end of the cover ring, and a corresponding secondary filter screen is installed at the lower opening of the cover ring.

[0011] Furthermore, the connections between all components on the manhole cover, including the breather valve, breather hole, oil cap, and oil inlet, are all sealed connections, and the corresponding installation between the top plate of the cover and the flange of the manhole is also a sealed connection.

[0012] This utility model's multifunctional manhole cover adds a breather valve and an oil inlet, improving the oil tank's adaptability to diverse changes in the external environment and enhancing the balance of gas pressure inside and outside the tank. Its more diversified functions reduce the number of additional openings in the tank body, increase the overall strength of the tank, and provide multiple safety protections for the internal environment, making the tank more stable during transportation, reducing the probability of accidents during transportation, and making it better meet the safety and reliability requirements of modern transportation. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 This is a top view of the present invention;

[0015] Figure 3 This utility model Figure 2 A cross-sectional view along the AA direction;

[0016] The markings in the diagram are as follows: 1. Cover body; 11. Top cover plate; 12. Bottom cover ring; 13. Oil inlet pipe; 14. Secondary filter screen; 2. Breather valve; 3. Oil cap; 31. Primary filter screen; 4. Oil tank; 41. Manhole; 42. Flange; 43. Short pipe. Detailed Implementation

[0017] To better understand the purpose, structure, and function of this utility model, the following description, in conjunction with the accompanying drawings, provides a more detailed account of a multi-protection manhole cover for oil tanks.

[0018] like Figure 1-3As shown, the multifunctional manhole cover 41 of this utility model includes a cover body 1 corresponding to the manhole 41 of the oil tank 4. The cover body 1 is provided with a breather hole and an oil inlet hole. A corresponding breather valve 2 is installed at the breather hole, and a corresponding oil cap 3 is installed at the oil inlet hole. In use, the manhole cover 41 is installed at the manhole 41 of the oil tank 4 through the cover body 1. The cover body 1 and the manhole 41 of the oil tank are detachably sealed. The manhole cover 41 is in a closed state under normal conditions. When a worker needs to enter the oil tank 4 for work, the manhole cover 41 is opened through the cover body 1, and the worker can enter the oil tank 4 through the manhole 41 to carry out the work. After the work is completed, the cover body 1 is closed. Under normal conditions, the breather valve 2 and the oil cap 3 are also in a closed state. When it is necessary to input oil into the oil tank 4, the oil cap 3 is opened, and oil can be input into the oil tank 4 through the oil inlet hole. After the oil is input, the oil cap 3 is closed.

[0019] Furthermore, the manhole 41 includes a flange 42 and a short pipe 43, wherein the bottom end of the short pipe 43 is fixedly connected to the side wall of the oil tank 4, and the manhole 41 is connected to the inner cavity of the oil tank 4 through the short pipe 43. The flange 42 is located at the top of the short pipe 43, and its inner ring is correspondingly connected to the short pipe 43. In this embodiment, the oil tank 4, the short pipe 43, and the flange 42 are integrally formed and fixedly connected together by welding. The cover body 1 of the manhole 41 includes a top cover plate 11 and a bottom cover ring 12, wherein the top cover plate 11 corresponds to the flange 42 and is located above the flange 42. Near the outer ring of both, multiple pairs of threaded holes that penetrate vertically are evenly distributed around the circumference. The two are detachably and fixedly connected together by corresponding bolts connected to the threaded holes. The bottom ring 12 is located below the top plate 11. It is a hollow cylindrical shape with openings at both the top and bottom. The top of its side wall at the top opening is connected to the bottom surface of the top plate 11. In this embodiment, the two are coaxially aligned. The outer diameter of the bottom ring 12 is not greater than the inner diameter of the short pipe 43, and its bottom end is not lower than the bottom end of the short pipe 43. During installation and use, the cover body 1 extends into the short pipe 43 of the manhole 41 through the bottom ring 12, providing positioning guidance for the corresponding installation of the top plate 11 and the flange 42, making the installation between the two more convenient and quick. Breathing hole and oil inlet hole All are located on the top plate 11 corresponding to the inner cavity of the bottom ring 12. Both are through holes running vertically through the bottom. In this embodiment, there is one breather hole and two oil inlets. The breather valve 2 is detachably and fixedly installed at the breather hole. It provides pressure regulation when the pressure inside the oil tank 4 changes, preventing the oil tank 4 from being dangerous due to excessive pressure changes. Each oil inlet hole is equipped with a corresponding oil inlet pipe 13. In this embodiment, the oil inlet pipe 13 is set vertically, with its upper and lower ends extending to the upper and lower sides of the top plate 11, respectively. The side wall of the oil inlet hole is connected to the lower outer side wall of the oil inlet pipe 13. The two are fixed and sealed by welding. The oil inlet pipe 13 is connected together. The upper end of the oil inlet pipe 13 is its oil inlet, and the oil inlet pipe 13 is connected to an external refueling device through its upper end. The lower end of the oil inlet pipe 13 is its oil outlet. The oil flows into the oil tank 4 from the oil outlet. This makes it easier to introduce the oil into the oil tank 4, prevents splashing, and can also minimize the contamination of the oil by external debris during the oil transportation process. The oil cap 3 is installed at the oil inlet at the upper end of the oil inlet pipe 13. The two are detachably fixed. In this embodiment, the two are tightened together by corresponding thread engagement. The setting of the breather hole and the oil inlet hole increases the versatility of the manhole 41 cover function.

[0020] Furthermore, a corresponding primary filter screen 31 is provided at the oil outlet at the bottom end of the oil inlet pipe 13. The outer ring of the top surface of the primary filter screen 31 is connected to the bottom surface of the oil inlet pipe 13. In this embodiment, multiple pairs of corresponding threaded holes are provided between the two. The two are detachably sealed and fixedly connected by corresponding bolts connected to the threaded holes. The primary filter screen 31 provides primary filtration for the oil entering the oil tank 4 through the oil inlet pipe 13. It performs initial filtration of impurities in the oil, preventing external impurities from entering the oil tank 4 and causing pollution inside the oil tank 4. At the same time, it can also reduce the impact of impurities on the oil during transportation, and prevent excessive impurities from rubbing against the oil during transportation and causing danger.

[0021] Furthermore, the oil outlet at the bottom of the oil inlet pipe 13 is higher than the lower opening of the bottom of the cover ring 12. A secondary filter screen 14 is provided below the cover body 1. The secondary filter screen 14 is installed at the lower opening of the cover ring 12, and its outer diameter corresponds to the outer diameter at the lower opening of the cover ring 12. The outer ring of the top surface of the secondary filter screen 14 is connected to the bottom surface of the cover ring 12. In this embodiment, multiple pairs of corresponding threaded holes are provided between the two. The two are detachably sealed and fixedly connected by corresponding bolts connected to the threaded holes. The secondary filter screen 14 performs secondary filtration on the oil entering the oil tank 4, making the oil cleaner and the oil tank 4 safer during transportation.

[0022] Furthermore, the breather valve 2 and the breather hole are also detachably sealed and fixedly connected, and the oil cap 3 and the oil inlet pipe 13 are also detachably sealed and fixedly connected. With these two working together, it is easier to prevent foreign objects from entering the inner cavity of the oil tank 4 during transportation. At the same time, the internal pressure is more stable under the regulation of the breather valve 2.

[0023] In use, firstly, the manhole 41 is installed on the oil tank 4 by cooperating with the cover 1 and the manhole 41. Under normal circumstances, the breather valve 2 and the oil cover 3 are both closed. When it is necessary to input oil into the oil tank 4, the oil cover 3 is opened, and an external refueling device is connected to the oil inlet at the upper end of the oil inlet pipe 13. At this time, the external refueling device can input oil into the inner cavity of the oil tank 4 through the oil inlet pipe 13. During the oil input process, the primary filter 31 and the secondary filter 14 work simultaneously to perform two-stage filtration on the input oil, preventing external impurities from entering the oil tank 4 and also making the oil entering the oil tank 4 cleaner. After the oil input is completed, the oil cover 3 is closed. At this time, the oil tank 4 can transport the oil inside. During the transportation process, the breather valve 2 adjusts the pressure inside the oil tank 4 at any time to keep it consistent with the external environment.

[0024] This utility model's multifunctional manhole cover 41 uses a breather valve 2 to achieve a more balanced internal and external air pressure during the transport of the oil tank 4, thereby improving the stability of the pressure environment within its cavity. The oil inlet pipe 13 further diversifies the function of the manhole cover. Combined with the primary filter 31 and secondary filter 14, the manhole cover 41 provides multiple layers of protection, effectively preventing external debris from entering the oil tank 4's cavity while also improving the cleanliness of the oil entering the tank 4. This prevents external impurities from entering the tank 4 and causing pollution and damage to its internal environment, providing multiple layers of protection for the internal environment of the oil tank 4. Furthermore, since both the breather hole and the oil inlet hole are located on the manhole cover 41, the oil tank 4 no longer needs two separate holes, making it easier for staff to perform protective maintenance on these holes. This also reduces the number of weak points on the surface of the oil tank 4 caused by the openings, resulting in better overall strength, higher pressure resistance, and greater safety and reliability for the oil tank 4.

[0025] It is understood that this utility model has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this utility model.

Claims

1. A multifunctional manhole (41) cover, characterized in that, It includes a cover (1) corresponding to the manhole (41) of the oil tank (4), and the cover (1) is provided with a breather hole and an oil inlet hole, wherein a corresponding breather valve (2) is installed at the breather hole and a corresponding oil cap (3) is installed at the oil inlet hole; The manhole (41) includes a short pipe (43) on the side wall of the oil tank (4) that communicates with its inner cavity. The top side wall of the short pipe (43) extends outward in a circumferential direction to form a corresponding flange (42). The cover body (1) of the manhole (41) includes a cover plate (11) located above the flange (42) and corresponding to it. Below the cover plate (11) is a cylindrical cover bottom ring (12) that is hollow inside and open at both ends. The cover bottom ring (12) corresponds to the short pipe (43) of the manhole (41). When installed and used, it extends into the inner cavity of the short pipe (43). The top of the side wall of the cover bottom ring (12) is connected to the bottom surface of the cover plate (11). The vent hole and the oil inlet hole are both located on the cover plate (11).

2. The multifunctional manhole (41) cover according to claim 1, characterized in that, The breathing hole and the oil inlet hole are both through holes provided on the top plate (11) corresponding to the inner cavity of the bottom ring (12). The oil inlet hole is provided with a corresponding oil inlet pipe (13). The side wall of the oil inlet hole is connected to the outer side wall of the oil inlet pipe (13). The two are fixedly and sealed together. The upper opening of the oil inlet pipe (13) is its oil inlet, and the lower opening of the oil inlet pipe (13) is its oil outlet. The oil cap (3) is installed on the oil inlet pipe (13).

3. The multifunctional manhole (41) cover according to claim 2, characterized in that, The top end of the oil inlet pipe (13) extends above the top cover plate (11), and the oil cap (3) is installed at the oil inlet at the upper end of the oil inlet pipe (13).

4. The multifunctional manhole (41) cover according to claim 2, characterized in that, The bottom end of the oil inlet pipe (13) extends downwards toward the top cover plate (11), and a corresponding primary filter screen (31) is installed at the oil outlet at its bottom end.

5. The multifunctional manhole (41) cover according to claim 2, characterized in that, The bottom end of the oil inlet pipe (13) is higher than the bottom end of the cover ring (12), and a corresponding secondary filter screen (14) is installed at the lower opening of the cover ring (12).

6. The multifunctional manhole (41) cover according to claim 2, characterized in that, The connections between the various components on the manhole (41) cover, including the breather valve (2), the breather hole, the oil cap (3), and the oil inlet hole, are all sealed connections. The installation between the top plate (11) and the flange (42) of the manhole (41) is also a sealed connection.

Images