Visualizing liquid sealed breather valve

Abstract

The utility model discloses a kind of visual liquid seal breathing valves, including valve body, the main pipe being set to the lower end of valve body and extending into the inside of valve body, the breathing pipe being set to the upper end of valve body and extending into the inside of valve body and the liquid separation bucket being set to the inside of valve body and being hollow and lower end opening, the main pipe upper end height is higher than the height of liquid separation bucket lower end;It further includes visual liquid level meter, the position of visual liquid level meter side portion close to upper and lower ends is respectively equipped with first upper connecting pipe and first lower connecting pipe, the position of valve body side portion close to upper and lower ends is respectively equipped with second upper connecting pipe and second lower connecting pipe, first upper connecting pipe and first lower connecting pipe are respectively connected with second upper connecting pipe and second lower connecting pipe.The utility model can be directly read liquid level height by setting visual liquid level meter, ensure that liquid level height and setting pressure match, avoid pressure deviation problem of exceeding standard.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, and in particular to a visual liquid seal breather valve. Background Technology

[0002] A liquid-sealed breather valve is a specially designed breather valve that reduces media discharge by utilizing the pressure-bearing capacity of the storage tank itself. It controls the positive pressure of exhaust and the negative pressure of intake by the weight of the positive and negative pressure valve discs. It has excellent features such as good sealing performance, high safety, environmental performance and easy maintenance. Therefore, it is widely used in atmospheric or low-pressure storage tanks, mainly to maintain the gas pressure balance in the storage tank and prevent the storage tank from being damaged due to overpressure or vacuum.

[0003] Liquid-sealed breather valves are used in different scenarios and require different pressure designs. For example, in the safety management of storage tank pressure, as a safety accessory for atmospheric / micro-internal pressure vertical storage tanks, they rely on the hydrostatic pressure of the liquid seal column to precisely control the positive pressure expulsion and negative pressure intake within the tank, preventing overpressure bulging or negative pressure collapse, thus ensuring the structural safety of the storage tank. Different pressures need to be designed for different storage tanks to achieve closed pressure control and ultra-low VOC emissions. However, traditional liquid-sealed breather valves require opening the cap to add or remove the sealing fluid to adapt to different operating conditions such as tank feeding, discharging, settling, and temperature changes. This operation is not only time-consuming and labor-intensive but also cannot quickly and accurately determine the sealing fluid level, easily leading to excessive pressure deviations. Utility Model Content

[0004] The purpose of this invention is to provide a visual liquid seal breather valve. This invention, by setting a visual liquid level gauge, can intuitively judge the liquid level in real time without opening the cover or stopping the machine. The liquid level height can be directly read from the outside, ensuring that the liquid level height matches the set pressure and avoiding the problem of excessive pressure deviation.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a visual liquid seal breather valve, comprising a valve body, a main pipe disposed at the lower end of the valve body and extending into the valve body, a breather pipe disposed at the upper end of the valve body and extending into the valve body, and a hollow, open-bottomed liquid-separating tank disposed inside the valve body, wherein the upper end of the main pipe is higher than the lower end of the liquid-separating tank; it also includes a visual liquid level gauge, wherein a first upper connecting pipe and a first lower connecting pipe are respectively disposed on the side of the visual liquid level gauge near the upper and lower ends, and a second upper connecting pipe and a second lower connecting pipe are respectively disposed on the side of the valve body near the upper and lower ends, wherein the first upper connecting pipe and the first lower connecting pipe are respectively connected to the second upper connecting pipe and the second lower connecting pipe.

[0006] By adopting the above technical solution, the upper end of the visual level gauge is connected to the sealing fluid part inside the valve body, and the lower end is connected to the atmospheric end inside the valve body. The liquid level can be judged in real time and intuitively. The operation of adding or removing sealing fluid does not require opening the cover or stopping the machine. During operation, the liquid level height can be directly read from the outside to ensure that the liquid level height matches the set pressure and avoid the problem of excessive pressure deviation.

[0007] The present invention is further configured such that the visible level gauge is a glass tube level gauge or a magnetic float level gauge.

[0008] By adopting the above technical solutions, the glass tube level gauge has a simple and transparent structure, low cost, and direct readings, allowing for intuitive observation of the real-time liquid level of the sealing fluid inside the valve body. Installation and maintenance are convenient. The magnetic float level gauge relies on the principle of communicating vessels and magnetic coupling to indicate the liquid level. The display panel uses red and white flip-up columns to indicate the liquid level height, providing a wide and clearly visible viewing angle. The display components are completely isolated from the internal sealing fluid, ensuring strong sealing and eliminating the risk of leakage. Both are commercially available and readily available products.

[0009] The present invention is further configured such that the first upper connecting pipe and the first lower connecting pipe are connected to the second upper connecting pipe and the second lower connecting pipe respectively by means of flange connection.

[0010] By adopting the above technical solution, the connection structure is simple and reliable, and its disassembly, assembly, and maintenance are convenient and efficient.

[0011] The present invention is further provided that a quick-release ball valve is installed at the bottom of the visual level gauge.

[0012] By adopting the above technical solution, excess sealing fluid can be discharged directly through the quick-release ball valve without the need for pouring or pumping. The operation is simple, the sealing fluid discharge can be completed quickly, the maintenance process is simplified, and the operation is convenient and efficient, which can be completed by a single person.

[0013] The present invention is further configured such that the top of the liquid separator is an arc shape with a high center and a low outer perimeter, and the top of the liquid separator is provided with a first annular baffle and a second annular baffle. The upper end of the second annular baffle is higher than the first annular baffle. The first annular baffle and the second annular baffle are respectively arranged in a circumferential array with a plurality of first flow holes and second flow holes. The upper end of the valve body is provided with a third annular baffle. The first annular baffle, the second annular baffle and the third annular baffle are arranged concentrically, and the lower end of the third annular baffle is lower than the upper end of the first annular baffle.

[0014] By adopting the above technical solution, the staggered flow holes have the function of preventing splashing. They can significantly reduce the kinetic energy of droplets and prevent the sealing liquid from being directly carried out of the valve body by the airflow. At the same time, the arc-shaped flow guide design at the top of the liquid separator, together with the staggered flow holes, can make the sealing liquid automatically flow back to the sealing cavity at the bottom of the valve body, and will not form liquid residue at the top of the liquid separator.

[0015] The present invention is further configured such that the upper end of the main pipe is fixedly connected to the upper end of the liquid separator, and the upper end of the main pipe is provided with a vent that connects the inside of the main pipe with the inside of the liquid separator.

[0016] By adopting the above technical solution, the liquid separator can be fixedly installed at the upper end of the main pipe, and the installation structure is firm and reliable.

[0017] The present invention is further configured such that multiple guide holes are distributed in a circumferential array at the lower edge of the liquid separator.

[0018] By adopting the above technical solution and setting uniformly distributed guide holes, the local velocity difference and eddy zone of the liquid seal layer can be broken, allowing the fluid flowing through the liquid seal to flow synchronously and uniformly in the circumferential direction, avoiding liquid surface turbulence and surging caused by sudden changes in local velocity, and reducing the probability of bubble generation and splashing.

[0019] The present invention is further configured to include a rain cap, the rain cap being an arc shape with the center convex upwards, and having multiple mounting holes arranged in a circumferential array on the rain cap. The upper end of the valve body is provided with multiple connecting posts corresponding to the position around the breathing tube, and the upper end of each connecting post is provided with a screw portion, the screw portion passing through the corresponding mounting hole, and a locking nut for pressing the rain cap tightly onto the upper end of the connecting post is connected to the screw portion.

[0020] By adopting the above technical solution, it can prevent rain and foreign objects from entering, ensuring the cleanliness of the internal flow channel. At the same time, it is very convenient to disassemble and assemble, which is conducive to daily maintenance. In addition, oil can be added by removing the rain cap.

[0021] The present invention is further provided that a bird net is provided between the rain cap and the valve body, and the bird net is located on the outer periphery of the breathing tube.

[0022] By adopting the above technical solutions, birds, rodents and other small animals can be effectively prevented from entering the pipes, thus avoiding them from nesting inside the pipes and leaving behind debris that blocks the ventilation channels.

[0023] The present invention is further provided that the rain cap is provided with an oil filling hole, and a plug is detachably installed on the oil filling hole.

[0024] By adopting the above technical solution, sealing fluid can be conveniently added without opening the cap, making the operation very convenient. Attached Figure Description

[0025] Figure 1 This is a perspective view of the entire utility model; Figure 2 This is a front view of the entire utility model; Figure 3 This is a cross-sectional view of the entire utility model.

[0026] In the diagram: 1. Valve body; 2. Main pipe; 3. Breathing pipe; 4. Liquid separator; 5. Visual level gauge; 6. First upper connecting pipe; 7. First lower connecting pipe; 8. Second upper connecting pipe; 9. Second lower connecting pipe; 10. Quick-release ball valve; 11. First annular baffle; 12. Second annular baffle; 13. First flow passage; 14. Second flow passage; 15. Third annular baffle; 16. Vent; 17. Guide hole; 18. Rain cap; 19. Mounting hole; 20. Connecting post; 21. Screw section; 22. Locking nut; 23. Bird net; 24. Oil filling hole; 25. Plug. Detailed Implementation

[0027] 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.

[0028] Example: As attached Figures 1-3 The illustrated visual liquid-sealed breather valve includes a valve body 1, a main pipe 2 located at the lower end of the valve body 1 and extending into the valve body 1, a breather pipe 3 located at the upper end of the valve body 1 and extending into the valve body 1, and a hollow, open-bottomed liquid-separating tank 4 located inside the valve body 1. The main pipe 2 is welded and fixed to the valve body 1, and the breather pipe 3 is also welded and fixed to the valve body 1. The upper end of the main pipe 2 is higher than the lower end of the liquid-separating tank 4. The sealing liquid is placed inside the valve body 1, and the liquid level is higher than the lower end of the liquid-separating tank 4. The liquid level is set according to the actual working conditions. The sealing liquid can be hydraulic oil, which has the advantages of antifreeze, low volatility, and immiscibility with the medium. The breather valve also includes a visual level gauge 5. The visual level gauge 5 has a first upper connecting pipe 6 and a first lower connecting pipe 7 located near the upper and lower ends on its side. The valve body 1 has a second upper connecting pipe 8 and a second lower connecting pipe 9 located near the upper and lower ends on its side. The first upper connecting pipe 6 and the first lower connecting pipe 7 are connected to the second upper connecting pipe 8 and the second lower connecting pipe 9, respectively. The upper end of the visual level gauge 5 is connected to the sealing fluid part inside the valve body 1, and the lower end is connected to the atmospheric end inside the valve body 1. The liquid level can be judged in real time and intuitively. The operation of adding or removing sealing fluid does not require opening the cover or stopping the machine. During operation, the liquid level height can be directly read from the outside to ensure that the liquid level height matches the set pressure and avoid the problem of excessive pressure deviation.

[0029] This liquid-sealed breather valve has no springs or moving seals; its core pressure element is a liquid column, which is free from wear and fatigue, ensuring long-term pressure stability and a long maintenance-free cycle.

[0030] More specifically, the visual level gauge 5 is either a glass tube level gauge or a magnetic float level gauge. Glass tube level gauges are simple and transparent in structure, inexpensive, and provide direct readings, allowing for intuitive observation of the real-time level of the sealing fluid inside the valve body 1. They are also easy to install and maintain. Magnetic float level gauges rely on the principle of communicating vessels and magnetic coupling to indicate the level. The display panel uses red and white flip-up bars to indicate the liquid level height, providing a wide and clearly visible viewing angle. The display components are completely isolated from the internal sealing fluid, ensuring strong sealing and eliminating the risk of leakage. Both are commercially available and readily available products.

[0031] As attached Figure 1 As shown, the first upper connecting pipe 6 and the first lower connecting pipe 7 are connected to the second upper connecting pipe 8 and the second lower connecting pipe 9 respectively via flange connections. This connection structure is simple and reliable, and easy and efficient to disassemble, assemble, and maintain.

[0032] As attached Figure 3 As shown, a quick-release ball valve 10 is installed at the bottom of the visual level gauge 5. The quick-release ball valve 10 is a commercially available mass-produced component that is readily available on the market. Excess sealing fluid can be discharged directly through the quick-release ball valve 10 without the need for pouring or pumping. The operation is simple, the sealing fluid is discharged quickly, the maintenance process is simplified, and the operation is convenient and efficient, requiring only one person to complete the task.

[0033] As attached Figure 3 As shown, the top of the liquid separator 4 has an arc shape with a higher center and a lower outer perimeter. A first annular baffle 11 and a second annular baffle 12 are welded and fixed to the top of the liquid separator 4. The upper end of the second annular baffle 12 is higher than the first annular baffle 11. Multiple first flow holes 13 and second flow holes 14 are respectively arranged in a circular array on the first annular baffle 11 and the second annular baffle 12. A third annular baffle 15 is welded and fixed to the upper end of the valve body 1. The first annular baffle 11, the second annular baffle 12 and the third annular baffle 15 are arranged concentrically. The lower end of the third annular baffle 15 is lower than the upper end of the first annular baffle 11. The staggered flow holes have a splash-proof function, which can significantly reduce the kinetic energy of the droplets and prevent the sealing liquid from being directly carried out of the valve body 1 by the airflow. At the same time, the arc-shaped flow guiding design at the top of the liquid separator 4, combined with the staggered flow holes, allows the sealing liquid to automatically flow back to the sealing cavity at the bottom of the valve body 1, preventing liquid residue from accumulating at the top of the liquid separator 4.

[0034] As attached Figure 3As shown, the upper end of the main pipe 2 is welded and fixed to the upper end of the liquid separator 4, and a vent 16 is provided at the upper end of the main pipe 2 to connect the inside of the main pipe 2 with the inside of the liquid separator 4. This design allows for the fixed installation of the liquid separator 4 at the upper end of the main pipe 2, and the installation structure is firm and reliable.

[0035] As attached Figure 3 As shown, multiple guide holes 17 are arranged in a circular array at the lower edge of the liquid seal 4. The uniformly distributed guide holes 17 can break the local velocity difference and eddy zone of the liquid seal layer, allowing the fluid flowing through the liquid seal to flow synchronously and uniformly in the circumferential direction, avoiding liquid surface turbulence and surging caused by sudden changes in local flow velocity, and reducing the probability of bubble generation and splashing.

[0036] As attached Figure 3 As shown, the breathing valve also includes a rain cap 18, which is an arc shape with a central upward convexity. Multiple mounting holes 19 are arranged in a circumferential array on the rain cap 18. Multiple connecting posts 20 are provided on the upper end of the valve body 1 corresponding to the area around the breathing tube 3. A screw portion 21 is provided at the upper end of each connecting post 20, passing through the corresponding mounting hole 19. A locking nut 22 is connected to the screw portion 21 to press the rain cap 18 tightly against the upper end of the connecting post 20. This design provides rain and foreign object protection, ensuring the cleanliness of the internal flow channel. Furthermore, it is easy to assemble and disassemble, facilitating daily maintenance. Additionally, oil can be added by removing the rain cap 18.

[0037] As attached Figure 3 As shown, a bird net 23 is provided between the rain cap 18 and the valve body 1, and the bird net 23 is located on the outer periphery of the breathing tube 3. The outer periphery of the bird net 23 can abut against the inner side of multiple connecting posts 20, or it can be fixed by welding the lower end to the upper end of the valve body 1. This is specifically designed to prevent birds, rodents and other small animals from entering, avoiding them from nesting in the tube or leaving debris that blocks the ventilation channel 25.

[0038] As attached Figure 3 As shown, the rain cap 18 is provided with an oil filling hole 24, and a plug 25 is detachably installed on the oil filling hole 24. The plug 25 can be threaded onto the oil filling hole 24 or interference-fitted onto the oil filling hole 24. Sealing fluid can be conveniently added without opening the cap, making the operation very convenient.

Claims

1. A visualized liquid seal breathing valve, comprising a valve body (1), a main pipe (2) arranged at the lower end of the valve body (1) and extending into the interior of the valve body (1), a breathing pipe (3) arranged at the upper end of the valve body (1) and extending into the interior of the valve body (1), and a liquid separation barrel (4) arranged in the interior of the valve body (1) and being hollow and having an open lower end, the upper end of the main pipe (2) being higher than the lower end of the liquid separation barrel (4); characterized in that: It also includes a visual level gauge (5), on the side of the visual level gauge (5) near the upper and lower ends respectively, a first upper connecting pipe (6) and a first lower connecting pipe (7) are provided, and on the side of the valve body (1) near the upper and lower ends respectively, a second upper connecting pipe (8) and a second lower connecting pipe (9) are provided, and the first upper connecting pipe (6) and the first lower connecting pipe (7) are connected to the second upper connecting pipe (8) and the second lower connecting pipe (9) respectively.

2. A visualizing liquid seal breathing valve according to claim 1, characterized in that: The visual level gauge (5) is a glass tube level gauge or a magnetic float level gauge.

3. A visualizing liquid seal breathing valve according to claim 1, characterized in that: The first upper connecting pipe (6) and the first lower connecting pipe (7) are connected to the second upper connecting pipe (8) and the second lower connecting pipe (9) respectively by means of flange connection.

4. The visualizing liquid seal breathing valve of claim 1, wherein: The bottom of the visual level gauge (5) is equipped with a quick-release ball valve (10).

5. The visualizing liquid seal breathing valve of claim 1, wherein: The top of the liquid separator (4) is an arc shape with a high center and a low outer perimeter. The top of the liquid separator (4) is provided with a first annular baffle (11) and a second annular baffle (12). The upper end of the second annular baffle (12) is higher than the first annular baffle (11). The first annular baffle (11) and the second annular baffle (12) are respectively arranged in a circular array with multiple first flow holes (13) and second flow holes (14). The upper end of the valve body (1) is provided with a third annular baffle (15). The first annular baffle (11), the second annular baffle (12) and the third annular baffle (15) are arranged concentrically. The lower end of the third annular baffle (15) is lower than the upper end of the first annular baffle (11).

6. A visualizing liquid seal breathing valve according to claim 1, characterized in that: The upper end of the main pipe (2) is fixedly connected to the upper end of the liquid separator (4), and the upper end of the main pipe (2) is provided with a vent (16) that connects the inside of the main pipe (2) with the inside of the liquid separator (4).

7. A visualizing liquid seal breathing valve according to claim 1, wherein: The liquid separator (4) has multiple guide holes (17) arranged in a circular array at the lower edge.

8. The visualizing liquid seal breathing valve of claim 1, wherein: It also includes a rain cap (18), which is an arc shape with the center convex upward. Multiple mounting holes (19) are distributed in a circular array on the rain cap (18). Multiple connecting posts (20) are provided on the upper end of the valve body (1) corresponding to the position around the breathing tube (3). The upper end of the connecting post (20) is provided with a screw part (21). The screw part (21) passes through the corresponding mounting hole (19), and a locking nut (22) for pressing the rain cap (18) onto the upper end of the connecting post (20) is connected to the screw part (21).

9. A visualizing liquid seal breathing valve according to claim 8, characterized in that: A bird net (23) is provided between the rain cap (18) and the valve body (1), and the bird net (23) is located on the outer periphery of the breathing tube (3).

10. A visualizing liquid seal breathing valve according to claim 8, characterized in that: The rain cap (18) is provided with an oil filling hole (24), and a plug (25) is detachably installed on the oil filling hole (24).

Images