Storage tank breather valve adsorption device

Abstract

The utility model discloses a storage tank breather valve adsorption device, which relates to the technical field of breather valves and comprises an outer pipe, the lower end of the outer pipe is communicated with a connecting pipe, the connecting pipe is communicated with the inside of a storage tank through a connecting channel on the storage tank, the outer pipe is connected with a breathing rod in a penetrating manner through a top cover at the top, and the inner wall of the outer pipe is provided with a limiting groove. A switch arm matched with the limiting groove is vertically welded to the side face of the breathing rod, and a telescopic air cylinder is fixed into the limiting groove. By arranging the air pressure balance structure capable of reducing the air pressure in the storage tank, the air pressure in the storage tank can be reduced when the air pressure in the storage tank is too large, by arranging the starting switch capable of moving along with the breathing rod, the telescopic air cylinder can be started, and by means of the length change of the telescopic rod at the lower end of the telescopic air cylinder, the breathing rod can be adjusted. The balance between the air pressure in the storage tank and the air pressure in the external environment is kept, the air pressure in the storage tank does not need to be calibrated by detaching an airflow channel after a fault occurs, and operation is easy.

Description

Technical Field

[0001] The utility model relates to the technical field of breathing valves, in particular to an adsorption device for a breathing valve of a storage tank. Background Art

[0002] A breathing valve is an essential device for achieving pressure balance in storage tanks. It's the general term for the combined inhalation and exhalation valves. It primarily consists of a valve body, disc, seat, stem, and guide sleeve. As materials flow in and out of a storage tank, the liquid level continuously rises and falls, and the pressure in the gaseous space above the liquid fluctuates. When the pressure exceeds the tank's design pressure, the tank top risks rupture, and in severe cases, explosion. When the pressure drops to a certain negative pressure, the tank's outer wall collapses under atmospheric pressure. To mitigate the negative effects of these pressure fluctuations, a breathing valve is typically installed on the tank top to regulate pressure fluctuations and maintain the gaseous pressure within the tank within a consistent dynamic range. The breathing valve also minimizes the loss of volatile media by maintaining pressure balance within the tank.

[0003] Although the adsorption structure of the existing tank breathing valve can release air when the internal air pressure of the tank is higher than the ambient pressure, reduce the air pressure in the tank to equal the ambient pressure, and make the air pressure in the tank drop back to equal the ambient pressure, it is difficult to adjust the air pressure in the tank under fault conditions, such as when the air pressure in the tank continues to drop to less than the ambient pressure. After a fault occurs, it is necessary to disassemble the air flow channel to calibrate the air pressure in the tank, which is cumbersome. For this reason, we propose a tank breathing valve adsorption device that can adjust the air pressure in the tank under fault conditions. Utility Model Content

[0004] The purpose of the utility model is to provide a storage tank breathing valve adsorption device to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a storage tank breathing valve adsorption device, comprising an outer tube, the outer tube is a protective pipe, the lower end of the outer tube is connected to a connecting pipe, the connecting pipe is connected to the inside of the storage tank through a connecting channel on the storage tank, the outer tube is connected to a breathing rod through the top cover on the top, the inner wall of the outer tube is provided with a limiting groove, the side of the breathing rod is vertically welded with a switch arm adapted to the limiting groove, a telescopic cylinder is fixed inside the limiting groove, the top of the telescopic cylinder is connected to a starting switch, the lower end of the telescopic cylinder is fixed with a plug through the telescopic rod, the inside of the limiting groove is provided with a first air hole, the side arm of the outer tube is provided with a second air hole, one side of the breathing rod is connected to an air pressure balance structure, the air pressure balance structure can release air pressure to the outside, and the breathing rod A pressure-bearing cover is welded to the bottom. When the air pressure in the storage tank is too high, the high pressure pushes the pressure-bearing cover to further pull the breathing rod upward. During the upward movement, the breathing rod synchronously pulls the air pressure balance structure upward. At this time, the air flow cutoff portion in the air pressure balance structure leaves the second air hole, and the gas inside the outer tube is discharged through the second air hole, which plays a role in balancing the gas pressure in the storage tank. When the gas pressure in the storage tank continues to decrease, the pressure-bearing cover pulls the breathing rod downward in the vertical direction. At this time, the breathing rod synchronously pulls the switch arm to move, and the switch arm moves down to the start switch. The start switch activates the telescopic cylinder, and the lower end of the telescopic cylinder pulls the plug away from the first air hole through the telescopic rod, allowing the airflow from the external environment to enter the storage tank, thereby balancing the gas pressure in the storage tank.

[0006] As a further solution of the present invention: the connecting pipe is symmetrical about the central axis of the outer pipe, the connecting pipe is a hollow cylindrical tube, one end of the connecting pipe is welded with a hexagonal connector, and the connecting pipe is connected to the connecting channel of the storage tank through the hexagonal connector.

[0007] As a further solution of the present invention: a pressure gauge is installed on the top of the breathing rod, and the pressure gauge can indicate the air pressure in the storage tank, providing a reference basis for the adjustment result of the air pressure in the storage tank.

[0008] As a further solution of the present invention: the air pressure balance structure includes a positioning pile, a telescopic spring is welded on one side of the positioning pile, the internal movable adapter of the positioning pile is connected to a retaining rod, and an airflow cutoff part is welded on one end of the retaining rod. The airflow cutoff part can block the opening of the second air hole, thereby closing the airflow inlet and outlet channel in the storage tank.

[0009] As a further solution of the present invention: the retaining rods are arranged in an equidistant circular array about the center line of the positioning pile, the retaining rods are tangent to the outer wall of the telescopic spring, and several retaining rods can enhance the connection stability with the positioning pile.

[0010] As a further solution of the present invention: the pressure-bearing cover is a trumpet-shaped elastic curved plate with an opening facing downward, the outer wall of the pressure-bearing cover is in tangential contact with the inner wall of the outer tube, and the pressure-bearing cover transmits the air pressure of the storage tank.

[0011] As a further solution of the present invention: the first pore and the second pore are respectively conical through holes, the cross-sectional diameter of the airflow interruption portion is larger than the radius of the minimum cross-sectional area of ​​the second pore, and the opening of the second pore can be blocked.

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

[0013] 1. The utility model is provided with an air pressure balance structure capable of reducing the gas pressure in the storage tank. When the air pressure in the storage tank is too high, the gas pressure in the storage tank can be reduced. By providing a starting switch that can move with the breathing rod, the telescopic cylinder can be started. By changing the length of the telescopic rod at the lower end of the telescopic cylinder, the balance between the air pressure in the storage tank and the external environment is maintained. There is no need to disassemble the air flow channel to calibrate the air pressure in the storage tank after a fault occurs, and the operation is simple.

[0014] 2. The utility model installs a pressure gauge on the top of the breathing rod. The pressure gauge can indicate the air pressure in the storage tank, providing a reference basis for the adjustment result of the air pressure in the storage tank. By providing an airflow cutoff portion, the opening of the second air hole can be blocked, thereby closing the airflow inlet and outlet channel in the storage tank, which is convenient for improving the accuracy of the air pressure adjustment in the storage tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional structural diagram of the utility model;

[0016] Figure 2 This is a diagram of the outer tube connection structure of the utility model;

[0017] Figure 3 This is a front view of the limit groove connection structure of the utility model;

[0018] Figure 4 This is a diagram of the connection structure of the pressure-bearing cover of the utility model;

[0019] Figure 5 For this utility model Figure 4 A magnified view of middle A;

[0020] Figure 6 This is an implementation structure diagram of the utility model.

[0021] In the figure: 1. Outer tube; 2. Connecting tube; 3. Top cover; 4. Breathing rod; 5. Switch arm; 6. First air hole; 7. Second air hole; 8. Telescopic cylinder; 9. Start switch; 10. Telescopic rod; 11. Plug; 12. Pressure gauge; 13. Positioning pile; 14. Retaining rod; 15. Telescopic spring; 16. Pressure bearing cover; 17. Limiting groove; 18. Air flow cutoff part; 19. Connecting channel; 20. Storage tank. DETAILED DESCRIPTION

[0022] 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.

[0023] See also Figures 1-6 The utility model provides a technical solution: a storage tank breathing valve adsorption device, including an outer tube 1, the outer tube 1 is a protective pipe, the lower end of the outer tube 1 is connected with a connecting tube 2, the connecting tube 2 is connected to the inside of the storage tank 20 through a connecting channel 19 on the storage tank 20, the outer tube 1 is connected with a breathing rod 4 through a top cover 3 on the top, the inner wall of the outer tube 1 is provided with a limiting groove 17, the side of the breathing rod 4 is vertically welded with a switch arm 5 that adapts to the limiting groove 17, a telescopic cylinder 8 is fixed inside the limiting groove 17, the top of the telescopic cylinder 8 is connected to a starting switch 9, the lower end of the telescopic cylinder 8 is fixed with a plug 11 through a telescopic rod 10, and a first air hole 6 is opened inside the limiting groove 17.

[0024] A second air hole 7 is provided on the side arm of the outer tube 1, and an air pressure balance structure is connected to one side of the breathing rod 4. The air pressure balance structure includes a positioning pile 13, and a telescopic spring 15 is welded to one side of the positioning pile 13. The internal movable adapter of the positioning pile 13 is connected to a retaining rod 14, and an air flow cutoff portion 18 is welded to one end of the retaining rod 14. The air flow cutoff portion 18 can block the opening of the second air hole 7, thereby closing the air flow inlet and outlet channel in the storage tank 20. The air pressure balance structure can release air pressure to the outside, and a pressure-bearing cover 16 is welded to the bottom of the breathing rod 4.

[0025] Preferably, Figure 1 As shown, the connecting pipe 2 is symmetrical about the central axis of the outer pipe 1. The connecting pipe 2 is a hollow cylindrical tube. A hexagonal connector is welded to one end of the connecting pipe 2. The connecting pipe 2 is connected to the connecting channel 19 of the storage tank 20 through the hexagonal connector.

[0026] Preferably, Figure 1 As shown, a barometer 12 is installed on the top of the breathing rod 4. The barometer 12 can indicate the air pressure in the storage tank 20 and provide a reference for the adjustment result of the air pressure in the storage tank 20.

[0027] Preferably, Figure 1 As shown, the retaining rods 14 are arranged in an evenly spaced circular array about the center line of the positioning pile 13 . The retaining rods 14 are tangent to the outer wall of the telescopic spring 15 . Several retaining rods 14 can enhance the connection stability with the positioning pile 13 .

[0028] Preferably, Figure 4As shown, the pressure-bearing cover 16 is a trumpet-shaped elastic curved plate with an opening facing downward. The outer wall of the pressure-bearing cover 16 is in tangential contact with the inner wall of the outer tube 1 , and the pressure-bearing cover 16 transmits the air pressure of the storage tank 20 .

[0029] Preferably, Figure 1 As shown, the first air hole 6 and the second air hole 7 are respectively conical through holes, and the cross-sectional diameter of the airflow interruption portion 18 is larger than the radius of the minimum cross-sectional area of ​​the second air hole 7 , and can block the opening of the second air hole 7 .

[0030] Working principle: During use, when the air pressure in the storage tank 20 is too high, the high pressure further pulls the breathing rod 4 upward by pushing the pressure-bearing cover 16. The breathing rod 4 synchronously pulls the air pressure balance structure upward during the upward movement. At this time, the airflow cutoff portion 18 in the air pressure balance structure leaves the second air hole 7, and the gas inside the outer tube 1 is discharged through the second air hole 7, which plays a role in balancing the gas pressure in the storage tank 20. When the gas pressure in the storage tank 20 continues to decrease, the pressure-bearing cover 16 pulls the breathing rod 4 downward in the vertical direction. At this time, the breathing rod 4 synchronously pulls the switch arm 5 to move, and the switch arm 5 moves down to the starting switch 9. The starting switch 9 starts the telescopic cylinder 8. The lower end of the telescopic cylinder 8 pulls the plug 11 away from the first air hole 6 through the telescopic rod 10, so that the airflow from the external environment enters the storage tank 20, thereby balancing the gas pressure in the storage tank 20.

[0031] 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.

[0032] 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 tank breathing valve adsorption device, comprising an outer tube (1), characterized in that: The lower end of the outer tube (1) is connected to a connecting tube (2), and the outer tube (1) is connected to a breathing rod (4) through a top cover (3) at the top. A limit groove (17) is provided on the inner wall of the outer tube (1), and a switch arm (5) adapted to the limit groove (17) is vertically welded to the side of the breathing rod (4). A telescopic cylinder (8) is fixed inside the limit groove (17), and a start switch (9) is connected to the top of the telescopic cylinder (8). A plug (11) is fixed to the lower end of the telescopic cylinder (8) through a telescopic rod (10). A first air hole (6) is provided through the inside of the limit groove (17), and a second air hole (7) is provided on the side arm of the outer tube (1). A pressure balance structure is connected to one side of the breathing rod (4), and the pressure balance structure can release air pressure to the outside. A pressure bearing cover (16) is welded to the bottom of the breathing rod (4).

2. A tank breathing valve adsorption device according to claim 1, characterized in that: The connecting pipe (2) is symmetrical about the central axis of the outer pipe (1); the connecting pipe (2) is a hollow cylindrical pipe; and a hexagonal connector is welded to one end of the connecting pipe (2).

3. The tank breathing valve adsorption device according to claim 1 is characterized in that: A pressure gauge (12) is installed on the top of the breathing rod (4).

4. The tank breathing valve adsorption device according to claim 1 is characterized in that: The air pressure balance structure comprises a positioning pile (13), a telescopic spring (15) is welded to one side of the positioning pile (13), a retaining rod (14) is movably adapted to be connected inside the positioning pile (13), and an airflow cutoff portion (18) is welded to one end of the retaining rod (14).

5. The tank breathing valve adsorption device according to claim 4 is characterized in that: The retaining rods (14) are arranged in a circular array with equal spacing about the center line of the positioning pile (13), and the retaining rods (14) are tangent to the outer wall of the telescopic spring (15).

6. The tank breathing valve adsorption device according to claim 1 is characterized in that: The pressure-bearing cover (16) is a trumpet-shaped elastic curved plate with an opening facing downward, and the outer wall of the pressure-bearing cover (16) is in tangential contact with the inner wall of the outer tube (1).

7. The tank breathing valve adsorption device according to claim 1 is characterized in that: The first air hole (6) and the second air hole (7) are respectively conical through holes, and the cross-sectional diameter of the airflow cutoff portion (18) is greater than the radius of the minimum cross-sectional area of ​​the second air hole (7).

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