Ventilation well lid of valve well

Abstract

The utility model belongs to the technical field of airport apron valve well maintenance, and particularly relates to a valve well ventilation well lid which comprises a lid body, the lid body is provided with multiple sets of ventilation openings and a groove, the multiple sets of ventilation openings are circumferentially distributed in the outer wall of the lid body, reinforcing ribs are arranged on the inner wall of the lid body, a dustproof net is arranged in the lid body, and the groove is formed in the outer wall of the lid body. The rotating block penetrates through the cover body and is rotationally connected with the cover body, and a hexagonal groove is formed in the top end of the rotating block. According to the ventilation well lid of the valve well, the multiple sets of ventilation openings distributed in the circumference are formed in the lid body, natural circulation of air in the valve well can be efficiently achieved, the good ventilation effect is ensured, meanwhile, the conical dustproof net is arranged in the lid body, dust and impurities can be effectively prevented from entering the valve well through the ventilation openings, and the ventilation effect is improved. The unique conical shape can prevent impurities from being accumulated on the outer wall of the dustproof net, dual protection of ventilation and dust prevention is provided for the valve well, and the stability of the internal environment of the valve well is maintained.

Description

Technical Field

[0001] This utility model relates to the field of maintenance technology for apron valve wells, specifically a valve well ventilation cover. Background Technology

[0002] The valve wells on the apron contain valves that control the flow of oil within the apron pipeline network. The integrity of the valve wells is crucial to the operational safety of the apron pipeline network. According to civil aviation standards and regulations, as well as the relevant provisions of the aviation fuel company's equipment and facility compliance acceptance management, at least two seasonal maintenance operations must be carried out each year. When entering the valve wells to perform maintenance work on valves and other equipment and facilities, since the apron valve wells are confined spaces, any work performed inside them is considered confined space work. Before the work begins, the valve wells must be naturally or forcibly ventilated in strict accordance with the requirements of GB30871 "Safety Specifications for Special Operations in Hazardous Chemical Enterprises" to ensure that the gas environment meets the requirements for the work.

[0003] Currently, before performing confined space operations, when ventilating valve wells naturally or by force, the well cover needs to be opened and placed next to the well opening, with reflective cones and other warning devices placed around it. Personnel must be present on-site to supervise the operation, and the airport command center must be notified. If the valve well is located near an aircraft stand, the ventilation process must not obstruct normal aircraft support operations. If an aircraft needs to land and support a nearby aircraft stand during the ventilation process, the well cover must be returned to its original position and personnel evacuated. Ventilation can only be resumed after the support operation is completed. This method has limited ventilation effect, is time-consuming, and requires personnel to remain on-site during the ventilation process. In view of this, we propose a valve well ventilation cover. Utility Model Content

[0004] The main objective of this invention is to provide a valve well ventilation cover that can solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model proposes a valve well ventilation cover, including a cover body, the cover body having ventilation openings and grooves, the ventilation openings being provided in multiple sets, the multiple sets of ventilation openings being circumferentially distributed on the outer wall of the cover body, the ventilation openings being designed to achieve the purpose of ventilation inside the valve well, the inner wall of the cover body being provided with reinforcing ribs, and the inside of the cover body being provided with a dustproof net.

[0006] Preferably, the cover is penetrated by a rotating block and rotatably connected to the rotating block. The top of the rotating block is provided with a hexagonal groove. By cooperating with a hexagonal wrench, the rotating shaft can drive the scraper to clean the outer wall of the dustproof net. Dust and impurities accumulate on the outer wall of the dustproof net, thereby affecting its ventilation effect.

[0007] Preferably, the rotating block has a square groove, a sliding block is slidably connected to the square groove, a spring is fixedly connected to the outer wall of the sliding block, the end of the spring away from the sliding block is fixedly connected to the inner wall of the square groove, and a cross block is fixedly connected to the outer wall of the end of the sliding block away from the spring.

[0008] Preferably, the outer wall of the dustproof net is fixedly connected with protrusions, and multiple sets of protrusions are provided, with the multiple sets of protrusions circumferentially distributed on the side wall of the dustproof net.

[0009] Preferably, the dustproof net is penetrated by a rotating shaft and slidably connected to the rotating shaft, the upper end of the rotating shaft is provided with a cross groove, and a scraper is fixedly connected to the side wall of the rotating shaft.

[0010] Preferably, the dustproof net has a through groove, and a dirt collection box is inserted into the through groove to collect impurities on the outer wall of the dustproof net.

[0011] This utility model provides a valve well ventilation cover. It has the following beneficial effects:

[0012] (1) The valve well ventilation cover can efficiently realize the natural air circulation in the valve well by opening multiple sets of circumferentially distributed ventilation openings in the cover body, ensuring good ventilation effect. At the same time, the conical dustproof net inside the cover body can not only effectively prevent dust and impurities from entering the valve well through the ventilation openings, but its unique conical shape can also prevent impurities from accumulating on the outer wall of the dustproof net, providing dual protection of ventilation and dust prevention for the valve well, and maintaining the stability of the internal environment of the valve well.

[0013] (2) The valve well ventilation well cover is designed with an anti-clogging cleaning structure. The rotating block and the rotating shaft are engaged by the cooperation of the cross block and the cross groove. The operator only needs to use a hex wrench to rotate the rotating block periodically to drive the scraper to rotate and push the impurities attached to the outer wall of the dustproof net into the sludge collection box. This cleaning design effectively prevents impurities from attaching and affecting the ventilation effect. Moreover, when cleaning, only the sludge collection box needs to be taken out periodically for cleaning. The operation is simple and convenient, which greatly reduces the maintenance cost and workload. 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 of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0015] Figure 1 This is a three-dimensional structural diagram of the front of the cover of this utility model;

[0016] Figure 2 This is a three-dimensional structural diagram of the back of the cover of this utility model;

[0017] Figure 3 This is a schematic diagram of the overall three-dimensional structure of the present invention;

[0018] Figure 4 This is a partial three-dimensional structural diagram of the present invention;

[0019] Figure 5 This is a schematic diagram of the three-dimensional structure of the dustproof net of this utility model;

[0020] Figure 6 This is a schematic diagram of the three-dimensional cross-sectional structure of the rotating block of this utility model;

[0021] Figure 7 This utility model Figure 2 Schematic diagram of structure A in the middle.

[0022] Explanation of icon numbers:

[0023] 1. Cover; 11. Reinforcing rib; 12. Groove; 13. Rotating block; 14. Square groove; 15. Sliding block; 16. Spring; 17. Cross block; 2. Ventilation opening; 3. Dustproof net; 30. Protrusion; 31. Through groove; 32. Sludge collection box; 33. Rotating shaft; 34. Cross groove; 35. Scraper.

[0024] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0025] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Please see Figures 1-7 This utility model proposes a valve well ventilation cover, including a cover body 1. The cover body 1 has ventilation openings 2 and grooves 12. Multiple sets of ventilation openings 2 are distributed circumferentially on the outer wall of the cover body 1. The design of the ventilation openings 2 can realize the air circulation in the valve well and achieve the effect of natural ventilation. The inner wall of the cover body 1 is provided with reinforcing ribs 11. The cover body 1 is provided with a dustproof net 3 inside to prevent dust and impurities from entering the interior of the valve well through the ventilation openings 2. At the same time, the dustproof net 3 is designed in a conical shape to prevent impurities from accumulating on the outer wall of the dustproof net 3. It also cooperates with the scraper 35 to push impurities into the interior of the dirt collection box 32. The outer wall of the dustproof net 3 is fixedly connected with protrusions 30. Multiple sets of protrusions 30 are distributed circumferentially on the side wall of the dustproof net 3.

[0027] In an embodiment of this utility model, in order to prevent the dustproof net 3 from becoming clogged, specifically, the cover 1 is penetrated by the rotating block 13 and rotatably connected to the rotating block 13. The top of the rotating block 13 is provided with a hexagonal groove, and the rotating block 13 is provided with a square groove 14. The square groove 14 is slidably connected to a sliding block 15. A spring 16 is fixedly connected to the outer wall of the sliding block 15. The end of the spring 16 away from the sliding block 15 is fixedly connected to the inner wall of the square groove 14. A cross block 17 is fixedly connected to the outer wall of the end of the sliding block 15 away from the spring 16. The dustproof net 3 is penetrated by the rotating shaft 33 and slidably connected to the rotating shaft 33. A cross groove 34 is provided at the upper end of the rotating shaft 33. A scraper 35 is fixedly connected to the side wall of the rotating shaft 33. The dustproof net 3 is provided with a through groove 31. A dirt collection box 32 is inserted into the through groove 31.

[0028] In this utility model, during use, the sludge collection box 32 is first inserted into the through groove 31 on the dustproof net 3, then the protrusion 30 on the dustproof net 3 is aligned with the groove 12 on the cover 1, and then the screws are used to fix the dustproof net 3 to the cover 1. The cover 1 is then placed over the valve well. During the installation of the dustproof net 3, the rotating shaft 33 will press against the cross block 17, causing the sliding block 15 to slide on the inner wall of the square groove 14. Simultaneously, the spring 16 undergoes elastic deformation. After the cover 1 is placed over the valve well, a hexagonal wrench is inserted into the hexagonal hole of the rotating block 13, and then the rotating block 13 is slowly rotated. At this time, the sliding block 15, which is slidably connected to the square groove 14, rotates synchronously. When the cross block 17 and the... When the cross grooves 34 overlap, the cross block 17 will spring into the cross groove 34 under the elastic force of the spring 16. At this time, the rotating block 13 and the rotating shaft 33 are in a snap-fit ​​state. In order to prevent the dust screen 3 from getting clogged, the operator only needs to use a hex wrench to rotate the rotating shaft 33 periodically. When the rotating shaft 33 rotates, the scraper 35, which is fixedly connected to the side wall of the rotating shaft 33, will rotate synchronously with the rotating shaft 33. During the rotation of the scraper 35, the impurities attached to the dust screen 3 are pushed into the interior of the sludge collection box 32 by the scraper 35, thus completing the collection of impurities and preventing impurities from adhering to the outer wall of the dust screen 3, thereby affecting the ventilation effect of the valve well. Finally, the sludge collection box 32 only needs to be removed and cleaned periodically.

[0029] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A valve pit ventilating manhole cover comprising a cover body (1), characterized in that: The cover (1) is provided with ventilation openings (2) and grooves (12), the ventilation openings (2) are provided with multiple groups, multiple groups of the ventilation openings (2) are circumferentially distributed on the outer wall of the cover (1), the inner wall of the cover (1) is provided with reinforcing ribs (11), and the inside of the cover (1) is provided with a dust screen (3).

2. A valve pit access cover according to claim 1, wherein: The cover (1) is penetrated by a rotating block (13) and is rotationally connected with the rotating block (13), and the top end of the rotating block (13) is provided with a hexagonal groove.

3. A valve pit access cover according to claim 2, wherein: The rotating block (13) is provided with a square groove (14), the square groove (14) is slidably connected with a sliding block (15), the outer wall of the sliding block (15) is fixedly connected with a spring (16), one end of the spring (16) away from the sliding block (15) is fixedly connected with the inner wall of the square groove (14), and the outer wall of the other end of the sliding block (15) away from the spring (16) is fixedly connected with a cross block (17).

4. A valve pit access cover according to claim 1, wherein: The outer wall of the dust screen (3) is fixedly connected with a lug (30), the lug (30) is provided with multiple groups, and multiple groups of the lug (30) are circumferentially distributed on the side wall of the dust screen (3).

5. A valve pit access cover according to claim 1, wherein: The dust screen (3) is penetrated by a rotating shaft (33) and is slidably connected with the rotating shaft (33), the upper end of the rotating shaft (33) is provided with a cross groove (34), and the side wall of the rotating shaft (33) is fixedly connected with a scraper (35).

6. A valve pit access cover according to claim 1, wherein: The dust screen (3) is provided with a through groove (31), and the through groove (31) is inserted with a dirt collecting box (32).

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