Dustproof self-cleaning breather valve for petrochemical storage tank

Abstract

The utility model discloses a dustproof self-cleaning breather valve for a petrochemical storage tank, and belongs to the field of breather valves. The dustproof self-cleaning breather valve for the petrochemical storage tank comprises a first conveying pipe, a dustproof cover is arranged at the upper end of the exterior of the first conveying pipe, a second conveying pipe is arranged on one side of the exterior of the first conveying pipe, and a first sealing piece is arranged at the lower end of the interior of the dustproof cover; a rubbing ring is arranged at the lower end of the first sealing piece. According to the environment-friendly fire-retardant breather valve, the problem that the sensitivity of gas exhaust is affected due to the fact that foreign matter can be adhered to the edge of an exhaust position of equipment along with flowing of gas in an existing environment-friendly fire-retardant breather valve is solved; and in the horizontal position adjusting process, the rubbing ring will rub the edge position of the upper end of the outer portion of the first conveying pipe, and the gas will clean the rubbing position of the rubbing area after penetrating through the upper support.

Description

Technical Field

[0001] The utility model relates to the field of breathing valves, in particular to a dust-proof and self-cleaning breathing valve for petrochemical storage tanks. Background Art

[0002] The breathing valve for petrochemical storage tanks is a safety device used in petrochemical storage tanks. Its main function is to maintain the pressure balance between the internal and external environments of the storage tank, ensuring that the storage tank will not cause safety problems due to excessively high or low internal pressure during storage, transportation, and use. When the internal pressure of the storage tank increases due to temperature changes, liquid evaporation, etc., the breathing valve will automatically open to release excess gas to prevent the internal pressure of the storage tank from being too high. When the internal pressure of the storage tank decreases, the breathing valve will automatically close to prevent external air or other impurities from entering the storage tank, thereby maintaining the stability of the internal environment of the tank.

[0003] The Chinese patent publication number CN220378967U discloses an environmentally friendly fire-retardant breathing valve, including a pull plate, and a plug rod is symmetrically fixedly connected to the lower surface of the pull plate. The plug rod cooperates with the position of the card slot. When the first filter and the second filter need to be maintained or replaced, the pull plate can be pulled upward to pull the plug block out of the fixed seat to clean or replace the first filter and the second filter. The disassembly and maintenance operations of the first filter and the second filter are relatively convenient and quick, which solves the problem in the background technology that the bolts are exposed to the outside for a long time and will rust and slip.

[0004] During the use of the above-mentioned patented environmentally friendly fire-retardant breathing valve, when the gas inside the connecting pipe is discharged, foreign matter will be mixed in the gas. As the gas flows, the foreign matter will adhere to the edge of the equipment's exhaust position. Foreign matter adhering to the equipment's exhaust position needs to be cleaned regularly. Failure to clean regularly will make it more difficult to exhaust the equipment, affecting the sensitivity of gas discharge. Utility Model Content

[0005] The purpose of the present utility model is to provide a dust-proof and self-cleaning breathing valve for petrochemical storage tanks. By pushing the scratch ring, the scratch ring can be driven to adjust the longitudinal horizontal position. During the horizontal position adjustment process, the scratch ring will scratch the outer upper end edge of the first transmission pipe. After the gas passes through the upper bracket, the scratch area and the scratch position will be cleaned, thereby solving the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a dustproof and self-cleaning breathing valve for petrochemical storage tanks, comprising a first transmission pipe, a dust cover is provided at the upper end of the outside of the first transmission pipe, a second transmission pipe is provided on one side of the outside of the first transmission pipe, a first sealing sheet is provided at the lower end of the inside of the dust cover, a scratch ring is provided at the lower end of the first sealing sheet, and a scratch area is provided around the upper end of the outside of the scratch ring close to the first transmission pipe.

[0007] Preferably, the first sealing sheet is attached to the upper end of the first transmission pipe, and the scratch ring and the first sealing sheet are welded and fixed around each other through an upper bracket, and the gas discharged through the upper bracket will directly contact the scratch area.

[0008] Preferably, an air activity chamber is provided in the middle position inside the scratch ring, a guide rod is provided at the lower end of the air activity chamber, and a lower bracket is provided outside the guide rod.

[0009] Preferably, a through hole is provided on one side of the lower end of the air activity chamber, and the through hole passes through the guide rod and extends to one side of the interior of the lower bracket.

[0010] Preferably, a second grid is provided at the lower end of the second transmission pipe, a second sealing sheet is provided at the upper end of the second grid, and a scratch rod array is provided on one side of the second sealing sheet facing the second grid.

[0011] Preferably, a first grid is provided at the lower end of the exterior of the second grid.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0013] When the pipe connected to the first transmission pipe of the utility model is discharged, the gas will squeeze the scratch ring, causing the scratch ring to scratch the surrounding area of ​​the outer upper end of the first transmission pipe in a longitudinal upward direction. During the exhaust process, the edge position of the outer upper end of the first transmission pipe is frequently scratched and cleaned, and self-cleaning is performed during the exhaust process. On the other hand, when the external gas adsorbs the external gas due to the negative pressure of the pipe connected to the first transmission pipe, the air pressure of the external gas will pass through the first grille and the second grille in turn and flow into the interior of the second transmission pipe, and the scratch rod will be re-embedded in the interior of the second grille when there is no pressure to push the second sealing plate. When the scratch rod is embedded in the interior of the second grille, it will scratch the through hole inside the second grille to achieve cleaning of the interior of the second grille. The second sealing plate and the first sealing plate move with the extrusion of the air pressure, and self-cleaning is achieved during the movement, thereby reducing the cleaning frequency of the breathing valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a three-dimensional diagram of the overall external structure of the utility model;

[0015] Figure 2 This is a cross-sectional view of the internal structure of the first transmission tube of the present invention;

[0016] Figure 3 For the utility model Figure 2 A partial enlarged view of area A in the middle;

[0017] Figure 4 For the utility model Figure 2 A partial enlarged view of area B in the middle;

[0018] Figure 5 This is a schematic diagram of the gas flow trajectory of the present utility model.

[0019] In the figure: 1. First transmission tube; 2. Dust cover; 3. Second transmission tube; 4. First grille; 5. First sealing sheet; 6. Scratch ring; 7. Scratch area; 8. Upper bracket; 9. Lower bracket; 10. Guide rod; 11. Air activity chamber; 12. Second sealing sheet; 13. Scratch rod; 14. Second grille; 15. Through hole. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] In order to solve the problem that when the existing environmentally friendly fire-retardant breathing valve is used to discharge the gas inside the connecting pipe, foreign matter will be mixed in the gas. As the gas flows, the foreign matter will adhere to the edge of the equipment exhaust position. The foreign matter adhering to the equipment exhaust position needs to be cleaned regularly. If it is not cleaned regularly, it will make the equipment exhaust more difficult and affect the sensitivity of gas discharge. This embodiment provides the following technical solutions:

[0022] A dustproof and self-cleaning breathing valve for petrochemical storage tanks, comprising a first transmission pipe 1, a dust cover 2 is provided on the upper end of the first transmission pipe 1, Figure 1As shown, a second transmission pipe 3 is provided on one side of the outside of the first transmission pipe 1. External gas flows into the inside of the first transmission pipe 1 through the second transmission pipe 3, and the gas flows into the pipe connected to the lower end of the first transmission pipe 1 through the first transmission pipe 1 to replenish the gas inside the pipe, thereby preventing the gas from squeezing the pipe and causing damage to the pipe. The gas that needs to be discharged from the pipe connected to the lower end of the first transmission pipe 1 will be discharged from the upper end of the outside of the first transmission pipe 1. The dust cover 2 can wrap the upper end of the outside of the first transmission pipe 1 to prevent external dust from flowing into the inside of the first transmission pipe 1 from the upper end of the outside of the first transmission pipe 1 during the static process.

[0023] In this embodiment, a first sealing sheet 5 is provided at the lower end of the dust cover 2, and the first sealing sheet 5 is attached to the upper end of the first transmission pipe 1. Figure 2 As shown, the gas inside the first transmission tube 1 can be discharged after pushing the first sealing sheet 5. A scratch ring 6 is provided at the lower end of the first sealing sheet 5. The scratch ring 6 and the first sealing sheet 5 are welded and fixed around the upper bracket 8. The lower end of the outer portion of the first transmission tube 1 will pass through the upper bracket 8 and be discharged outside the first transmission tube 1. An air activity chamber 11 is provided in the middle position inside the scratch ring 6. A guide rod 10 is provided at the lower end of the air activity chamber 11. A lower bracket 9 is provided outside the guide rod 10. When the scratch ring 6 moves longitudinally upward and adjusts its horizontal position, the guide rod 10 will move inside the lower bracket 9. The restriction of the guide rod 10 by the lower bracket 9 can improve the stability of the movement of the scratch ring 6.

[0024] In this embodiment, a through hole 15 is provided on one side of the lower end of the air activity chamber 11. Figure 1 and Figure 2 As shown, the through hole 15 passes through the guide rod 10 and extends to one side of the interior of the lower bracket 9. The gas to be discharged from the first transmission pipe 1 will push the scratch ring 6 and be discharged. In the process of pushing the scratch ring 6, the through hole 15 will also move longitudinally upward. When the through hole 15 moves longitudinally upward and the upper end of the through hole 15 is exposed outside the lower bracket 9, the gas will pass through the through hole 15 and flow into the air activity chamber 11. Finally, the gas inside the air activity chamber 11 will pass through the upper bracket 8 and be discharged.

[0025] In this embodiment, a scratch area 7 is provided around the upper end of the outer portion of the scratch ring 6 close to the first transmission tube 1. Figure 2 and Figure 3 As shown, the gas discharged from the upper bracket 8 directly contacts the scratch area 7, and the scratch ring 6 scrapes one side of the outside of the first transmission tube 1 during the process of moving longitudinally upward, so that foreign matter accumulates in the scratch area 7. The gas blows the scratch area 7 and clears the foreign matter in the scratch area 7.

[0026] In this embodiment, a second grid 14 is provided at the lower end of the second transmission pipe 3, a second sealing sheet 12 is provided at the upper end of the second grid 14, and a scratch rod 13 is provided on one side of the second sealing sheet 12 facing the second grid 14. Figure 1 and Figure 4 As shown, in a stationary state, the scratch rod 13 will be stuck inside the second grille 14. After the external gas squeezes the scratch rod 13, the scratch rod 13 will move vertically upward and expose the second grille 14. After the external gas stops pushing the second sealing sheet 12, the second sealing sheet 12 will reset and drive the scratch rod 13 to be inserted into the second grille 14 again. Insertion into the second grille 14 can directly clean large particles stuck inside the second grille 14, so that the particles are pushed out of the lower end outside the second transmission pipe 3, realizing self-cleaning during air flow.

[0027] In this embodiment, the lower end of the second grid 14 is provided with the first grid 4, as shown in FIG. Figure 1 、 Figure 2 and Figure 5 As shown, the second grille mesh 14 and the scratch rod 13 can be wrapped and protected by the first grille mesh 4.

[0028] Working principle: When using the breathing valve and discharging and inhaling the pipeline gas, the internal gas will squeeze the scratch ring 6 when discharging the breathing valve. After being squeezed, the scratch ring 6 will move longitudinally upward, and the through hole 15 inside the guide rod 10 will be exposed to the outside of the lower bracket 9. When the through hole 15 is exposed, the gas inside the first transmission tube 1 will pass through the through hole 15 and flow into the air activity chamber 11. The gas flowing into the air activity chamber 11 will flow toward the scratch area 7 under the support of the upper bracket 8. The scratch ring 6 will move longitudinally upward and scratch the edge of the first transmission tube 1. The air flow will push the foreign matter scratched inside the scratch area 7, so that the foreign matter is directly discharged with the gas. When the external gas enters the second transmission pipe 3, the air pressure will pass through the first grille 4 to squeeze the second sealing piece 12, causing the second sealing piece 12 to move longitudinally upward. When the foreign matter in the external gas passes through the second grille 14, it is stuck in the through hole inside the second grille 14. When the external gas stops squeezing the second sealing piece 12, the second sealing piece 12 is reset and drives the scratch rod 13 to reset. The scratch rod 13 is reset and embedded in the second grille 14. The embedded in the second grille 14 cleans the large particles stuck in the second grille 14, thereby preventing the subsequent air flow from causing the particles stuck in the second grille 14 to flow into the second transmission pipe 3 and the first transmission pipe 1.

[0029] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0030] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A dustproof and self-cleaning breathing valve for a petrochemical storage tank, comprising a first transmission pipe (1), a dust cover (2) being provided at the upper end of the exterior of the first transmission pipe (1), and a second transmission pipe (3) being provided at one side of the exterior of the first transmission pipe (1), characterized in that: A first sealing sheet (5) is provided at the lower end of the interior of the dust cover (2), a scratch ring (6) is provided at the lower end of the first sealing sheet (5), and a scratch area (7) is provided around the upper end of the exterior of the scratch ring (6) close to the first transmission pipe (1).

2. The dustproof and self-cleaning breathing valve for petrochemical storage tanks according to claim 1, characterized in that: The first sealing sheet (5) is attached to the upper end of the first transmission tube (1), and the scratch ring (6) and the first sealing sheet (5) are welded and fixed around the upper bracket (8). The gas discharged through the upper bracket (8) will directly contact the scratch area (7).

3. The dustproof and self-cleaning breathing valve for petrochemical storage tanks according to claim 2, characterized in that: An air activity chamber (11) is provided at a middle position inside the scratch ring (6), a guide rod (10) is provided at the lower end of the air activity chamber (11), and a lower bracket (9) is provided outside the guide rod (10).

4. The dustproof and self-cleaning breathing valve for petrochemical storage tanks according to claim 3 is characterized in that: A through hole (15) is provided on one side of the lower end of the air activity chamber (11), and the through hole (15) passes through the guide rod (10) and extends to one side of the interior of the lower bracket (9).

5. The dustproof and self-cleaning breathing valve for petrochemical storage tanks according to claim 1, characterized in that: A second grid mesh (14) is provided at the lower end inside the second transmission pipe (3), a second sealing sheet (12) is provided at the upper end outside the second grid mesh (14), and a scratch rod (13) is provided in an array on one side of the second sealing sheet (12) facing the second grid mesh (14).

6. The dustproof and self-cleaning breathing valve for petrochemical storage tanks according to claim 5, characterized in that: The lower end of the exterior of the second grid mesh (14) is provided with a first grid mesh (4).

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