Novel storage tank breather valve

Abstract

The utility model belongs to the technical field of oil tank breather valves, and discloses a novel storage tank breather valve which comprises a valve seat, a valve cover is fixedly connected to the top end of the valve seat, a breather valve body is attached to the interior of a cavity of the valve cover, a lubricating groove is formed in the inner wall of the breather valve body, and a lubricating block is arranged in the lubricating groove. A positive pressure valve disc is slidably connected to the interior of the breather valve body, a base is fixedly connected to the top end of the positive pressure valve disc, a valve rod is rotatably connected to the center of the interior of the base, the outer side of the valve rod is sleeved with a limiting disc, an abutting rod is fixedly connected to the outer side of the limiting disc, and the outer side of the abutting rod is fixedly connected to the interior of the breather valve body. The problems that a traditional breather valve for the oil storage tank is poor in sealing effect, the quality of oil products is reduced, the oil storage tank cannot be adjusted in the expiration state, the inspiration state and the balance state according to the internal pressure condition of the oil storage tank, and oil leaks easily at the breather valve in the shaking process of the oil, and consequently oil tank safety accidents are caused are solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of oil tank breather valves, and particularly relates to a new type of storage tank breather valve. Background Technique

[0002] An oil tank breather valve is a ventilation device installed on the top of a fixed storage tank or oil tank, which can reduce the evaporation loss of oil products, control the pressure of the storage tank, maintain pressure balance, and can also reduce the volatilization and loss of the medium in the storage tank by utilizing the pressure-bearing capacity of the storage tank itself, playing an important role in both safety and environmental protection.

[0003] Meanwhile, the patent with the application number CN202221270205.8 discloses a breather valve for an oil storage tank with a leakage prevention function, including a valve body. A first chamber and a second chamber are arranged inside the valve body, and the first chamber and the second chamber are communicated with each other. A breathable protective cover and a breathable mesh plate are fixedly connected to the outer surface of the valve body. The breathable protective cover is located above the first chamber, and the breathable mesh plate is located inside the second chamber. Hollow sealing rings are fixedly connected to the upper end of the valve body and the inner bottom end of the second chamber. A first through hole is drilled on the surface of the hollow sealing ring, and a second through hole is drilled on the outer circumferential surface of the hollow sealing ring. A blocking block is rotatably connected to the outer circumferential surface of the hollow sealing ring, and the blocking block is in contact with the second through hole. An adapter tube is fixedly connected between the breathable protective cover and the inner top end of the second chamber. An adapter rod is slidably connected to the inner cavity of the adapter tube. A valve flap is fixedly connected to the lower end of the adapter tube, and a solid sealing ring is fixedly connected to the lower end of the valve flap. The solid sealing ring is fitted with the upper end of the hollow sealing ring.

[0004] However, in the implementation of related technologies, it is found that the above-mentioned traditional breather valve for oil storage tanks has poor sealing effect, and external impurities and moisture enter the oil tank, reducing the quality of the oil products. Moreover, the oil storage tank cannot be adjusted according to the internal pressure conditions of the oil storage tank in the exhalation state, inhalation state, and balance state, and oil is prone to leakage at the breather valve during the shaking process. Content of the Utility Model

[0005] To solve the problems raised in the above background technique, the utility model provides a new type of storage tank breather valve, which has the advantages that the oil storage tank can be adjusted according to the internal pressure conditions of the oil storage tank in the exhalation state, inhalation state, and balance state, automatically adjusting the pressure inside the oil tank to ensure that the internal pressure will not be too high or too low during the oil inlet and outlet process of the oil tank, thereby protecting the structural integrity of the oil tank, ensuring the safe use of the oil storage tank, improving the sealing performance, preventing the evaporation loss of the oil products in the oil tank, reducing the contact between the oil products and the air, and reducing the oxidation and deterioration speed of the oil products.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a new type of storage tank breathing valve, comprising a valve seat, the top end of the valve seat is fixedly connected to a valve cover, the valve cover is arranged to be a cavity, the cavity of the valve cover is fitted with a breathing valve body, the inner wall of the breathing valve body is arranged to be a lubrication groove, the interior of the lubrication groove is provided with a lubrication block, the interior of the breathing valve body is slidingly connected to a positive pressure valve disc, the top end of the positive pressure valve disc is fixedly connected to a base, the inner center of the base is rotatably connected to a valve stem, the outer side of the valve stem is hooked with a limiting disk, the outer side of the limiting disk is fixedly connected to a clamping rod, and the outer side of the clamping rod is fixedly connected to the interior of the breathing valve body.

[0007] Preferably, a negative pressure valve disc is tied to the outer side of the valve stem, the top of the negative pressure valve disc is rotatably connected to a rotating seat, the outer side of the rotating seat is tied to a rotor scraper, and the rotor scraper is rotatably connected to the top of the negative pressure valve disc.

[0008] Preferably, the top end of the valve cover is fixedly connected to a connecting rod, the top end of the connecting rod is fixedly connected to a rainproof plate, and the rainproof plate is made of a hydrophobic material.

[0009] Preferably, a notch is provided on the outer side of the breathing valve body, an air outlet pipe is fixedly connected to the outer side of the valve seat, and the left side of the air outlet pipe is engaged with the notch of the breathing valve body.

[0010] Preferably, a gas cavity is provided inside the valve seat, and the gas cavity is provided outside the breathing valve body.

[0011] Preferably, the top end of the valve stem is fixedly connected to a limit block, and the bottom end of the limit block is tightly arranged against the top end of the negative pressure valve disc.

[0012] Preferably, the positive pressure valve disc and the negative pressure valve disc are arranged inside the breathing valve body for sliding, and the valve stem is slidably connected inside the breathing valve body.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0014] 1. The utility model uses the weight of the valve disc to control the air pressure of the oil tank through the breathing valve. When the pressure of the gas in the storage tank is within the control pressure range of the breathing valve, the breathing valve does not operate to maintain the airtightness of the oil tank. When the gas pressure in the tank increases and reaches the control positive pressure of the breathing valve, the negative pressure valve disc is pushed open, and the gas overflows from the tank, so that the pressure in the tank no longer continues to increase. When the pressure of the gas in the tank drops and reaches the control negative pressure of the negative pressure valve disc, the atmosphere of the storage tank will push open the breathing vacuum valve and enter the tank, so that the pressure in the tank no longer continues to drop, ensuring that during the process of oil in and out of the oil tank, a vacuum is prevented from forming in the oil tank, the oil tank is prevented from being crushed, and the internal pressure will not be too high or too low, thereby protecting the structural integrity of the oil tank.

[0015] 2. By adding several rotor structures to the negative pressure valve disc, the present utility model enables the negative pressure valve disc to rotate after it is opened. Thus, the dirt and dust accumulated above the negative pressure valve disc can be spun down by centrifugal force to achieve self-cleaning. Moreover, it solves the problems that as the usage time of the breathing valve increases, due to the repeated impact of the steam of the storage tank medium on the valve disc, the weight of the negative pressure valve disc increases, and it often gets stuck, adhered, or blocked. After the negative pressure valve disc is opened, it can maintain self-stability, solve the problem of eccentricity of the negative pressure valve disc, and effectively avoid the oil tank safety accidents caused by the failure of the breathing valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present utility model;

[0017] Figure 2 It is a schematic diagram of the positive pressure valve disc structure of the present utility model;

[0018] Figure 3 It is a schematic diagram of the negative pressure valve disc structure of the present utility model;

[0019] Figure 4 It is a schematic diagram of the lubricating groove structure of the present utility model;

[0020] Figure 5 It is a schematic diagram of the air outlet pipe structure of the present utility model;

[0021] Figure 6 It is a schematic diagram of the valve seat structure of the present utility model.

[0022] In the figure: 1. Valve seat; 2. Valve cover; 3. Gas channel; 4. Breathing valve body; 5. Base; 6. Valve rod; 7. Tightening rod; 8. Limiting disc; 9. Positive pressure valve disc; 10. Negative pressure valve disc; 11. Rotating seat; 12. Rotor scraper; 13. Lubricating block; 14. Limiting block; 15. Rain shield; 16. Air outlet pipe; 17. Connecting rod; 18. Lubricating groove. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0024] Such as Figures 1 to 5As shown in the figure, the present utility model provides a new type of storage tank breather valve, which includes a valve seat 1. The top of the valve seat 1 is fixedly connected with a valve cover 2. The valve cover 2 is arranged as a cavity. The inside of the cavity of the valve cover 2 is fitted with a breather valve body 4. When the positive pressure valve disc 9 slides along the lubricating groove 18 on the inner wall of the breather valve body 4 outside the valve rod 6, it touches and presses the lubricating block 13 inside the lubricating groove 18. A limiting disc 8 is added outside the valve rod 6, and the abutting rod 7 outside the limiting disc 8 abuts against the inside of the breather valve body 4 to prevent deviation.

[0025] Specifically, a negative pressure valve disc 10 is sleeved outside the valve rod 6. The top of the negative pressure valve disc 10 is rotatably connected with a rotating seat 11. A rotor scraper 12 is sleeved outside the rotating seat 11. The rotor scraper 12 is rotatably connected to the top of the negative pressure valve disc 10, and can spin off the dirt accumulated above the negative pressure valve disc 10 through centrifugal force to achieve self-cleaning.

[0026] Furthermore, the top of the valve cover 2 is fixedly connected with a connecting rod 17. The top of the connecting rod 17 is fixedly connected with a rain shield 15. The rain shield 15 is made of a hydrophobic material to prevent rainwater from entering the inside of the valve cover 2.

[0027] Still further, a notch is provided on the outside of the breather valve body 4. The outside of the valve seat 1 is fixedly connected with an outlet pipe 16. The left side of the outlet pipe 16 is fitted with the notch of the breather valve body 4. The atmosphere of the storage tank will push open the partition inside the outlet pipe 16 and enter the tank, so that the pressure inside the tank will not continue to drop, ensuring that a vacuum is not formed inside the oil tank during the process of oil inlet and outlet.

[0028] It should be noted that a gas channel 3 is provided inside the valve seat 1, and the gas overflows from the inside of the gas channel 3 inside the valve cover 2, so that the pressure inside the tank will not continue to increase.

[0029] It should be noted that the top of the valve rod 6 is fixedly connected with a limiting block 14, and the limiting block 14 abuts against the top of the negative pressure valve disc 10.

[0030] It should be introduced that the positive pressure valve disc 9 and the negative pressure valve disc 10 slide inside the breather valve body 4 to achieve air intake and exhaust, and the valve rod 6 is fixed inside the breather valve body 4.

[0031] Among them, the breather valve body 4 is prior art and will not be elaborated; at the same time, the present utility model also includes a power supply, a controller, a switch, etc., which are not the main technical points of this patent and will not be elaborated; the "front, back, left, and right" perspectives of this device are based on Figure 1 the direction shown in the figure.

[0032] Working principle:

[0033] First, when the pressure of the valve cover 2 is within the control pressure range of the breather valve body 4, the breather valve body 4 does not act, maintaining the tightness of the oil tank. When the gas pressure in the tank rises and reaches the control positive pressure of the breather valve body 4, the negative pressure valve disc 10 is pushed open, and the gas overflows from the inside of the gas channel 3 inside the valve cover 2, so that the pressure in the tank no longer continues to increase. When the pressure of the gas in the tank drops and reaches the control negative pressure of the negative pressure valve disc 10, the atmosphere of the storage tank will push open the partition inside the outlet pipe 16 and enter the tank, so that the pressure in the tank no longer continues to drop, ensuring that during the oil inlet and outlet process of the oil tank, a vacuum is prevented from forming inside the oil tank, avoiding the oil tank being crushed, and the internal pressure will not be too high or too low, thereby protecting the structural integrity of the oil tank;

[0034] When the positive pressure valve disc 9 slides along the inner wall lubricating groove 18 of the breather valve body 4 on the outside of the valve stem 6, it touches and presses the lubricating block 13 inside the lubricating groove 18, making the positive pressure valve disc 9 and the negative pressure valve disc 10 slide more smoothly. Then, a limiting disc 8 is added on the outside of the valve stem 6 at the top of the base 5. The pressing rod 7 on the outside of the limiting disc 8 presses tightly inside the breather valve body 4 to prevent deviation and limit the sliding process to prevent the valve stem 6 from deviating. After long-term use, a rotor scraper 12 is sleeved on the outside of the rotating seat 11, which can spin off the dirt accumulated above the negative pressure valve disc 10 through centrifugal force to achieve self-cleaning.

[0035] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0036] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A new type of storage tank breather valve, comprising a valve seat (1), characterized in that: The top end of the valve seat (1) is fixedly connected with a valve cover (2). The valve cover (2) is arranged as a cavity. The inner cavity of the valve cover (2) is fitted with a breather valve body (4). The inner wall of the breather valve body (4) is arranged as a lubricating groove (18). A lubricating block (13) is arranged inside the lubricating groove (18). A positive pressure valve disc (9) is slidably connected inside the breather valve body (4). The top end of the positive pressure valve disc (9) is fixedly connected with a base (5). A valve rod (6) is rotatably connected to the center inside the base (5). A limiting disc (8) is sleeved outside the valve rod (6). An abutting rod (7) is fixedly connected to the outside of the limiting disc (8). The outside of the abutting rod (7) is fixedly connected inside the breather valve body (4).

2. The novel storage tank breather valve according to claim 1, wherein: A negative pressure valve disc (10) is sleeved outside the valve rod (6). A rotating seat (11) is rotatably connected to the top end of the negative pressure valve disc (10). A rotor scraper (12) is sleeved outside the rotating seat (11). The rotor scraper (12) is rotatably connected to the top end of the negative pressure valve disc (10).

3. A novel storage tank breather valve according to claim 1, characterized in that: A connecting rod (17) is fixedly connected to the top end of the valve cover (2). A rain shield (15) is fixedly connected to the top end of the connecting rod (17). The rain shield (15) is made of a hydrophobic material.

4. A novel storage tank breather valve according to claim 1, characterized in that: A notch is formed on the outside of the breather valve body (4). An air outlet pipe (16) is fixedly connected to the outside of the valve seat (1). The left side of the air outlet pipe (16) is fitted with the notch of the breather valve body (4).

5. A novel storage tank breather valve according to claim 4, characterized in that: A gas channel (3) is arranged inside the valve seat (1). The gas channel (3) is arranged outside the breather valve body (4).

6. The novel storage tank breather valve according to claim 2, characterized in that: A limiting block (14) is fixedly connected to the top end of the valve rod (6). The bottom end of the limiting block (14) is abutted against the top end of the negative pressure valve disc (10).

7. A novel storage tank breather valve according to claim 1, characterized in that: The positive pressure valve disc (9) and the negative pressure valve disc (10) are arranged to slide inside the breather valve body (4). The valve rod (6) is fixedly connected inside the breather valve body (4).

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