Multifunctional fire-resistant low-leakage tank breather valve

Abstract

This utility model discloses a multifunctional flame-arresting low-leakage storage tank breather valve, relating to the field of breather valve technology. It includes a breather valve body, a pressure valve body installed at the top inside the breather valve body, a vacuum valve body installed on one side inside the breather valve body, an air intake port on one side of the bottom of the breather valve body, an installation plate installed on the bottom surface of the air intake port, a filter screen installed at the center of the installation plate, an annular box engaged with the bottom of the installation plate, multiple oblique nozzles equidistantly installed on the inner wall of the annular box, and an air injection pump installed on one side wall of the annular box. This multifunctional flame-arresting low-leakage storage tank breather valve, by setting an annular box installed at the bottom of the filter screen, and an air injection pump on one side wall, in conjunction with multiple oblique nozzles on the inner wall and a timer switch, can perform air jet cleaning of the filter screen within a predetermined time and frequency, enabling the breather valve body to have a periodic self-cleaning function and reducing the probability of filter screen clogging.

Description

Technical Field

[0001] This utility model relates to the field of breather valve technology, and in particular to a multifunctional flame-arresting low-leakage breather valve for storage tanks. Background Technology

[0002] A breather valve is a type of valve that ensures the storage tank space is isolated from the atmosphere within a certain pressure range, while also allowing it to communicate with the atmosphere (breathing) when the pressure exceeds or falls below this range. Its function is to prevent the storage tank from being damaged due to overpressure or vacuum, and at the same time, to reduce the evaporation loss of the stored liquid.

[0003] Currently, the function of breather valves is relatively simple, serving only as a safe and energy-saving product to maintain the pressure balance of the storage tank and reduce the volatilization of the medium. Their structure is similar to a filter screen, which may become clogged by dust or other particulate matter during long-term use of filtering air intake. However, they do not have a cleaning function, making regular manual cleaning quite troublesome. In addition, the valve body is equipped with a rain cover structure, but it has no self-defense function when there is a small amount of rain splashing in heavy rain. In extreme weather, there is a risk of water ingress. Utility Model Content

[0004] The purpose of this invention is to provide a multifunctional flame-arresting, low-leakage breather valve for storage tanks to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a multifunctional flame-retardant low-leakage storage tank breather valve, comprising a breather valve body, a pressure valve body installed at the top inside the breather valve body, a vacuum valve body installed on one side inside the breather valve body, an air intake port opened on one side of the bottom of the breather valve body, an installation plate installed on the bottom surface of the air intake port, a filter screen installed at the center of the installation plate, an annular box engaged with the bottom of the installation plate, multiple oblique nozzles equidistantly installed on the inner wall of the annular box, an air injection pump installed on one side wall of the annular box, a fixing ring provided at the bottom of the annular box, a cleaning cotton tube provided at the center of the fixing ring, and electromagnets fixedly embedded on both sides of the bottom end of the fixing ring; A protective cover is installed on the top of the main body of the breathing valve. A rubber cover is fixedly connected to the middle of the inner wall of the protective cover. A water-swellable rubber ring is fixedly embedded between the protective cover and the rubber cover at the included angle.

[0006] As a preferred embodiment of this utility model, the air outlet of the air pump is embedded inside the annular box, and the air pump is connected to the inside of the annular box.

[0007] Through the above technical solution, the air pump injects gas into the interior of the annular box, and the gas is ejected through multiple oblique nozzles to achieve multi-directional oblique airflow for air jet cleaning of the filter screen.

[0008] In a preferred embodiment of this invention, the top end of the fixing ring is fixedly connected to the bottom end of the annular box.

[0009] With the above technical solution, the fixing ring is integrated with the annular box, and its position and height do not change.

[0010] As a preferred embodiment of this utility model, a lifting ring is fixedly connected to the bottom end of the cleaning cotton tube, and the side wall of the lifting ring is slidably connected to the inner wall of the fixed ring.

[0011] As a preferred embodiment of this utility model, a magnetic ring is fixedly connected to the bottom end of the lifting ring, and the magnetic properties of the magnetic ring are the same as those of the electromagnet.

[0012] Through the above technical solution, the lifting ring will change position and height relative to the fixed ring, and the repulsive force between the magnetic ring and the electromagnet is the driving force for the height change.

[0013] As a preferred embodiment of this utility model, a plurality of elastic pull ropes are fixedly connected between the top of the cleaning cotton tube and the mounting plate.

[0014] With the above technical solution, when magnetic repulsion occurs, the elastic cord is stretched, and when the repulsive force is lost, the cleaning cotton tube returns to its original position under the elastic pull of the elastic cord.

[0015] As a preferred embodiment of this utility model, a battery box is installed on the other side wall of the annular box, and a storage battery is installed inside the battery box.

[0016] As a preferred embodiment of this utility model, a timer switch is installed on the side wall of the battery box, and the air pump and electromagnet are both electrically connected to the battery through the timer switch.

[0017] Through the above technical solution, the storage battery supplies power to the air pump and electromagnet, and their opening and closing are controlled by a timer switch.

[0018] Compared with the prior art, the beneficial effects of this utility model are: 1. This utility model, by setting an annular box installed at the bottom of the filter screen, with an air pump on one side wall, together with multiple oblique nozzles on the inner wall and a timer switch, can perform air cleaning on the filter screen within a predetermined time period and frequency, so that the main body of the breather valve has a periodic self-cleaning function, reducing the probability of filter screen clogging. The electromagnet, lifting ring and magnetic ring, together with the cleaning cotton tube, can shield and protect the multiple oblique nozzles when air cleaning is not performed, avoiding long-term exposure and clogging in the dust collection area, and ensuring the air cleaning effect.

[0019] 2. This utility model, by setting a protective cover on the top of the pressure valve body, can protect the valve body from rainwater entering the interior. The rubber cover on the inner wall, together with the water-swellable rubber ring, can cause the water-swellable rubber ring to increase in volume when the rain is heavy and some rainwater seeps in. This will squeeze the rubber cover on one side, causing the opening of the rubber cover to deform and shrink, reducing the opening area. Thus, when some rainwater seeps in, the exhaust port area of ​​the pressure valve body is reduced, preventing rainwater from continuing to enter the valve body, and playing a self-protection function against the expansion of rain. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the structure of the annular box of this utility model; Figure 3 This is a schematic diagram of the structure of the cleaning cotton tube of this utility model.

[0021] In the diagram: 1. Breathing valve body; 2. Pressure valve body; 3. Vacuum valve body; 4. Inlet; 5. Mounting plate; 6. Ring box; 7. Air pump; 8. Angled nozzle; 9. Battery box; 10. Cleaning cotton tube; 11. Filter screen; 12. Fixing ring; 13. Magnetic ring; 14. Electromagnet; 15. Protective cover; 16. Rubber cover; 17. Water-swellable rubber ring; 18. Elastic pull rope; 19. Timer switch. Detailed Implementation

[0022] 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.

[0023] Please see Figures 1 to 3 This utility model provides a technical solution for a multifunctional flame-arresting, low-leakage breather valve for storage tanks: Example 1: according to Figure 1 , Figure 2 and Figure 3As shown, a multifunctional flame-retardant low-leakage storage tank breather valve includes a breather valve body 1, a pressure valve body 2 installed at the top inside the breather valve body 1, a vacuum valve body 3 installed on one side inside the breather valve body 1, an air intake 4 opened on one side of the bottom of the breather valve body 1, an installation plate 5 installed on the bottom surface of the air intake 4, a filter screen 11 installed at the center of the installation plate 5, an annular box 6 engaged at the bottom of the installation plate 5, multiple oblique nozzles 8 equidistantly installed on the inner wall of the annular box 6, an air injection pump 7 installed on one side wall of the annular box 6, a fixing ring 12 provided at the bottom of the annular box 6, a cleaning cotton tube 10 made of activated carbon fiber felt provided at the center of the fixing ring 12, and electromagnets 14 fixedly embedded on both sides of the bottom end of the fixing ring 12.

[0024] The air outlet of the air pump 7 is embedded inside the annular box 6, and the air pump 7 is connected to the inside of the annular box 6. The top end of the fixing ring 12 is fixedly connected to the bottom end of the annular box 6. The bottom end of the cleaning cotton tube 10 is fixedly connected to a lifting ring. The side wall of the lifting ring is slidably connected to the inner wall of the fixing ring 12. The bottom end of the lifting ring is fixedly connected to a magnetic ring 13. The magnetism of the magnetic ring 13 is the same as that of the electromagnet 14.

[0025] Multiple elastic pull ropes 18 are fixedly connected between the top of the cleaning cotton tube 10 and the mounting plate 5. A battery box 9 is installed on the other side wall of the ring box 6. A storage battery is installed inside the battery box 9. A timer switch 19, model KG316T, is installed on the side wall of the battery box 9. The timer accuracy is ±1 minute and a 24-hour cycle working mode can be set. The air pump 7 and the electromagnet 14 are both electrically connected to the storage battery through the timer switch 19.

[0026] In practical use, this multifunctional flame-retardant low-leakage storage tank breather valve of the present invention, during the use of the breather valve body 1, when the pressure inside the tank reaches the rated positive exhalation pressure, the valve disc inside the pressure valve body 2 opens, and the steam inside the tank is discharged. When the vacuum inside the tank reaches the rated negative inhalation pressure, the valve disc inside the vacuum valve body 3 opens, and air enters through the air inlet 4. Due to the filter screen 11 at the bottom of the air inlet 4, the inhaled air can be filtered before being inhaled. After long-term use, a lot of dust will accumulate on the filter screen 11. The timer switch 19 can be set in advance. After the predetermined time is reached, the timer switch 19 controls the electromagnet 14 and the air pump 7 to turn on. The electromagnet 14 is energized and generates magnetism, which interacts with the magnetic ring. 13. Like charges repel each other, thus pushing the lifting ring downward. At this time, multiple elastic pull ropes 18 are in a stretched state, so the top cleaning cotton cylinder 10 is offset from the multiple angled nozzles 8, exposing the multiple angled nozzles 8. At the same time, the air pump 7 starts to work, spraying air towards the filter screen 11 to clean it, causing small foreign objects such as dust to be blown away from the filter screen 11, realizing the function of periodic cleaning of the filter screen 11. When the cleaning time is over, the timer switch 19 is turned off, and the elastic pull of the multiple elastic pull ropes 18 causes the lifting ring to rise, so that the cleaning cotton cylinder 10 is reset, that is, covering the multiple angled nozzles 8, covering and protecting the angled nozzles 8, preventing them from being exposed and blocked in the dust collection area for a long time, and ensuring the air spray cleaning effect.

[0027] Example 2: Based on Example 1, such as Figure 1 As shown, a protective cover 15 is installed on the top of the breathing valve body 1. A rubber cover 16 is fixedly connected to the middle of the inner wall of the protective cover 15. The rubber cover 16 is made of a relatively soft material. Under the expansion and compression of the water-swellable rubber ring 17, its opening can be deformed and closed. A water-swellable rubber ring 17 is fixedly embedded between the protective cover 15 and the rubber cover 16. The material is bentonite-based water-swellable rubber.

[0028] In practical use, this utility model provides a multifunctional flame-retardant low-leakage storage tank breather valve. The breather valve body 1 is installed outdoors. When it rains, rainwater flows along the protective cover 15, which covers and protects the pressure valve body 2. When the rain is heavy and rainwater splashes into the protective cover 15, the rainwater falls onto the water-swellable rubber ring 17, causing the water-swellable rubber ring 17 to expand in volume. This squeezes the rubber cover 16 on one side, causing the rubber cover 16 to deform and shrink, reducing the opening area. Thus, when some rainwater seeps in, the exhaust port area of ​​the pressure valve body 2 is reduced, preventing rainwater from continuing to enter the valve body.

[0029] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0030] In this invention, unless otherwise expressly specified and limited, the first feature "on" or "below" the second feature may be in direct contact with the first and second features, or indirect contact through an intermediate medium. In the description of this specification, references to terms such as "a solution," "some solutions," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that solution or example is included in at least one solution or example of this invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same solution or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more solutions or examples.

Claims

1. A multifunctional flame-arresting low-leakage storage tank breather valve, comprising a breather valve body (1), characterized in that: A pressure valve body (2) is installed at the top inside the breathing valve body (1). A vacuum valve body (3) is installed on one side inside the breathing valve body (1). An air inlet (4) is opened on one side of the bottom of the breathing valve body (1). An installation plate (5) is installed on the bottom surface of the air inlet (4). A filter screen (11) is installed at the center of the installation plate (5). An annular box (6) is snapped into the bottom of the installation plate (5). Multiple oblique nozzles (8) are installed at equal intervals on the inner wall of the annular box (6). An air pump (7) is installed on one side wall of the annular box (6). A fixing ring (12) is provided at the bottom of the annular box (6). A cleaning cotton tube (10) is provided at the center of the fixing ring (12). Electromagnets (14) are fixedly embedded on both sides of the bottom end of the fixing ring (12). A protective cover (15) is installed on the top of the breathing valve body (1), and a rubber cover (16) is fixedly connected to the middle of the inner wall of the protective cover (15). A water-swellable rubber ring (17) is fixedly embedded between the included angle of the protective cover (15) and the rubber cover (16).

2. The multifunctional flame-arresting low-leakage storage tank breather valve according to claim 1, characterized in that: The air outlet of the air pump (7) is embedded inside the annular box (6), and the air pump (7) is connected to the inside of the annular box (6).

3. A multifunctional flame-arresting low-leakage storage tank breather valve according to claim 1, characterized in that: The top end of the fixing ring (12) is fixedly connected to the bottom end of the annular box (6).

4. A multifunctional flame-arresting low-leakage storage tank breather valve according to claim 1, characterized in that: The bottom end of the cleaning cotton tube (10) is fixedly connected to a lifting ring, and the side wall of the lifting ring is slidably connected to the inner wall of the fixed ring (12).

5. A multifunctional flame-arresting low-leakage storage tank breather valve according to claim 4, characterized in that: A magnetic ring (13) is fixedly connected to the bottom end of the lifting ring, and the magnetic properties of the magnetic ring (13) are the same as those of the electromagnet (14).

6. A multifunctional flame-arresting low-leakage storage tank breather valve according to claim 1, characterized in that: Multiple elastic pull ropes (18) are fixedly connected between the top of the cleaning cotton tube (10) and the mounting plate (5).

7. A multifunctional flame-arresting low-leakage storage tank breather valve according to claim 1, characterized in that: A battery box (9) is installed on the other side wall of the annular box (6), and a storage battery is installed inside the battery box (9).

8. A multifunctional flame-arresting low-leakage storage tank breather valve according to claim 7, characterized in that: A timer switch (19) is installed on the side wall of the battery box (9), and the air pump (7) and the electromagnet (14) are electrically connected to the battery through the timer switch (19).

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