A new mechanical breathing valve

Abstract

The application discloses a novel mechanical breathing valve and relates to the technical field of breathing valves, which comprises a breathing valve body, a partition plate arranged in the middle of the breathing valve body, wherein the partition plate divides the breathing valve body into an upper cavity and a lower cavity, two exhalation holes and inhalation holes for connecting the upper cavity and the lower cavity are arranged on the partition plate, a pressure valve assembly is arranged on the upper side of the partition plate and close to the exhalation holes, a vacuum valve assembly is arranged at the lower end of the partition plate and close to the inhalation holes, and a connection control mechanism for controlling the staggered opening and closing of the exhalation holes and the inhalation holes is arranged on the partition plate. The pressure of the oil tank is ensured to meet the requirements under the pressure balance of the vacuum valve assembly and the pressure valve assembly. When the novel mechanical breathing valve is installed on a large tank, the pressure valve assembly is opened when the pressure in the tank is higher than the safe pressure, and the vacuum valve assembly is opened when the pressure in the tank is lower than the safe pressure, so that the safe operation of the large tank is ensured.

Description

Technical Field

[0001] This invention relates to the field of breathing valve technology, and more specifically to the field of novel mechanical breathing valve technology. Background Technology

[0002] The safe operation of oil storage tanks in the petroleum industry requires mechanical breather valves and the maintenance of a stable pressure inside the tank to ensure tank safety, reduce oil and gas loss, and protect the environment.

[0003] Due to structural defects in existing mechanical breather valves, when the pressure inside the tank exceeds the specified pressure, the pressure valve opens, but the opening degree is insufficient, resulting in insufficient ventilation. When negative pressure is formed inside the tank, the vacuum valve opens, and the valve stem at the top of the vacuum valve is prone to jamming. The occurrence of the above two phenomena poses a hidden danger to the mechanical breather valve in protecting the safe operation of the oil tank. Summary of the Invention

[0004] The purpose of this invention is to provide a novel mechanical breathing valve in order to solve the above-mentioned technical problems.

[0005] To achieve the above objectives, the present invention specifically adopts the following technical solution:

[0006] A novel mechanical breathing valve includes a breathing valve body. A partition is provided in the middle of the breathing valve body, which divides the interior of the breathing valve body into an upper cavity and a lower cavity. The partition is provided with two exhalation holes and an inhalation hole that connect the upper cavity and the lower cavity. A pressure valve assembly is provided on the upper side of the partition near the exhalation hole, and a vacuum valve assembly is provided on the lower end of the partition near the inhalation hole. A connecting control mechanism is provided on the partition to control the alternating opening and closing of the exhalation hole and the inhalation hole.

[0007] Furthermore, the exhalation and inhalation ports are symmetrically arranged on the semi-circular arc plate of the partition.

[0008] Furthermore, the pressure valve assembly includes a pressure valve one and a pressure valve two located below the pressure valve one. The pressure valve two is hinged to the partition via hinge A, and a valve plate rubber seal for sealing the exhalation port is provided below the pressure valve two.

[0009] The vacuum valve assembly includes a vacuum valve disposed below the suction port and a valve plate rubber seal disposed above the vacuum valve for sealing the suction port.

[0010] Furthermore, the connection control mechanism includes a hinge B located in the middle of the upper part of the partition and a valve body connecting rod passing through the hinge B. One end of the valve body connecting rod passes through the air intake hole and is fixedly connected to the vacuum valve, and the other end is connected to the upper surface of the pressure valve through the hinge C.

[0011] Furthermore, the valve body connecting rod is connected to the vacuum valve by welding.

[0012] Furthermore, the top of the breathing valve body is connected to an upper end cap via a flange, and a breathing hole communicating with the interior of the upper cavity is provided on the side wall of the breathing valve body.

[0013] The beneficial effects of this invention are as follows:

[0014] 1. This invention primarily stabilizes the internal pressure of the tank by opening and closing a vacuum valve assembly and a pressure valve assembly. When the internal pressure is within a specified range, the vacuum valve assembly and the pressure valve assembly are tightly fitted to the vent and intake ports on the partition. The weight difference between the pressure valve assembly and the vacuum valve assembly ensures the tank's seal and pressure. When a negative pressure forms inside the tank, the vacuum valve opens to draw in gas, increasing the internal pressure, overcoming the weight difference between the pressure valve and the vacuum valve assembly. When the internal pressure exceeds a specified value, the pressure valve assembly opens the vent to expel gas from the tank, reducing the internal pressure and maintaining a stable internal pressure, thus minimizing oil and gas loss and protecting the environment.

[0015] 2. The opening and closing of the vacuum valve assembly and pressure valve assembly controlled by the connection control mechanism is achieved by lever principle. This mechanical breather valve overcomes the shortcomings of jamming and small air volume. It has a simple and practical structure, is lightweight, and is easy to connect and install.

[0016] 3. This breather valve can ensure that the pressure of the oil tank is stable within the specified range, with an efficiency of 100%. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the cross-section of the present invention;

[0018] Figure 2 yes Figure 1 A partial schematic diagram of the mechanism;

[0019] Figure 3 This is a schematic diagram of the structure of the present invention;

[0020] Figure 4 This is a schematic diagram of the partition structure;

[0021] Figure 5 This is a schematic diagram of the structure of pressure valve two;

[0022] Reference numerals in the attached drawings: 1-Breathing valve body, 2-Vacuum valve, 3-Pressure valve II, 4-Pressure valve I, 5-Valve body connecting rod, 6-Hinge B, 7-Hinge C, 8-Hinge A, 9-Ventilation hole, 10-Rubber seal between valve plates, 11-Baffle plate, 12-Upper end cap. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0024] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0025] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0026] In the description of the embodiments of the present invention, it should be noted that the terms "inner", "outer", "upper", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of the invention is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the present invention.

[0027] Example 1

[0028] like Figures 1 to 5 As shown, this embodiment provides a novel mechanical breathing valve, including a breathing valve body 1. A partition 11 is provided in the middle of the breathing valve body 1, which divides the interior of the breathing valve body 1 into an upper cavity and a lower cavity. Two exhalation holes and an inhalation hole are provided on the partition 11, which connect the upper cavity and the lower cavity. A pressure valve assembly is provided on the upper side of the partition 11 near the exhalation hole, and a vacuum valve assembly is provided on the lower end of the partition 11 near the inhalation hole. A connecting control mechanism is provided on the partition 11 to control the alternating opening and closing of the exhalation hole and the inhalation hole.

[0029] The exhalation and inhalation ports are symmetrically arranged on the semi-circular arc plate of the partition 11.

[0030] In this embodiment, the internal pressure of the tank is stabilized primarily through the opening and closing of a vacuum valve assembly and a pressure valve assembly. When the internal pressure is within a specified range, the vacuum valve assembly and the pressure valve assembly are tightly fitted to the vent and intake ports on the partition. The weight difference between the pressure valve assembly and the vacuum valve assembly ensures the sealing and pressure of the tank. When a negative pressure forms inside the tank, the vacuum valve opens to draw in gas, increasing the internal pressure, overcoming the weight difference between the pressure valve and the vacuum valve assembly. When the internal pressure of the tank exceeds a specified value, the pressure valve assembly opens the vent to expel gas from the tank, reducing the internal pressure and maintaining a stable internal pressure, thus minimizing oil and gas loss and protecting the environment.

[0031] Example 2

[0032] This embodiment is a further optimization based on Embodiment 1, specifically:

[0033] The pressure valve assembly includes a pressure valve 4 and a pressure valve 3 located below the pressure valve 4. The pressure valve 3 is hinged to the partition 11 via a hinge A8. A valve plate rubber seal 10 for sealing the exhalation port is provided below the pressure valve 3.

[0034] The vacuum valve assembly includes a vacuum valve 2 disposed below the suction port and a valve plate rubber seal 10 disposed above the vacuum valve 2 for sealing the suction port.

[0035] The connection control mechanism includes a hinge B6 located in the middle of the upper part of the partition 11 and a valve body connecting rod 5 passing through the hinge B6. One end of the valve body connecting rod 5 passes through the air intake hole and is fixedly connected to the vacuum valve 2, and the other end is connected to the upper surface of the pressure valve 4 through the hinge C7.

[0036] The valve body connecting rod 5 is connected to the vacuum valve 2 by welding.

[0037] The top of the breather valve body 1 is connected to an upper end cap 12 via a flange, and a breather hole 9 communicating with the interior of the upper cavity is provided on the side wall of the breather valve body 1.

[0038] To prevent fire accidents, the entire breather valve is made of aluminum.

[0039] The opening and closing of the vacuum valve assembly and pressure valve assembly controlled by the connection control mechanism is achieved by lever principle. This mechanical breather valve overcomes the shortcomings of jamming and small air volume. It has a simple and practical structure, is lightweight, and is easy to connect and install.

Claims

1. A novel mechanical breathing valve, comprising a breathing valve body (1), characterized in that, A partition (11) is provided in the middle of the breathing valve body (1). The partition (11) divides the interior of the breathing valve body (1) into an upper cavity and a lower cavity. Two exhalation holes and an inhalation hole are provided on the partition (11) to connect the upper cavity and the lower cavity. A pressure valve assembly is provided on the upper side of the partition (11) near the exhalation hole. A vacuum valve assembly is provided on the lower end of the partition (11) near the inhalation hole. A connection control mechanism for controlling the alternating opening and closing of the exhalation hole and the inhalation hole is provided on the partition (11). The pressure valve assembly includes a pressure valve one (4) and a pressure valve two (3) located below the pressure valve one (4). The pressure valve two (3) is hinged to the partition plate (11) via hinge A (8). A valve plate rubber seal (10) for sealing the exhalation port is provided below the pressure valve two (3). The vacuum valve assembly includes a vacuum valve (2) disposed below the suction port and a valve plate rubber seal (10) disposed above the vacuum valve (2) for sealing the suction port. The connection control mechanism includes a hinge B (6) located in the middle of the upper part of the partition (11) and a valve body connecting rod (5) passing through the hinge B (6). One end of the valve body connecting rod (5) passes through the suction hole and is fixedly connected to the vacuum valve (2), and the other end is connected to the upper surface of the pressure valve (4) through the hinge C (7).

2. The novel mechanical breathing valve according to claim 1, characterized in that, The exhalation and inhalation holes are symmetrically arranged on the semi-circular arc plate of the partition (11).

3. A novel mechanical breathing valve according to claim 1, characterized in that, The valve body connecting rod (5) is connected to the vacuum valve (2) by welding.

4. A novel mechanical breathing valve according to claim 1, characterized in that, The top of the breathing valve body (1) is connected to an upper end cap (12) via a flange, and a breathing hole (9) communicating with the interior of the upper cavity is provided on the side wall of the breathing valve body (1).

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