Breathing valve

Abstract

The utility model belongs to the technical field of breather valves, and particularly relates to a breather valve which comprises a breather valve body, a first clamping groove is formed in the top of the breather valve body, a first sealing plate is arranged in the first clamping groove, a first sealing gasket is fixedly installed at the bottom of the first sealing plate, a second clamping groove is formed in the top of the first sealing plate, and a second sealing plate is arranged in the second clamping groove. A rectangular rod and a second sealing gasket are fixedly mounted at the bottom of the second sealing plate, the second sealing gasket is located on the peripheral side of the rectangular rod, a rectangular groove is formed in the rectangular rod, a sliding rod is slidably mounted in the rectangular groove, the bottom end of the sliding rod penetrates through the bottom of the rectangular groove and is fixedly provided with a supporting frame, and the peripheral side of the supporting frame is fixed to the inner wall of the breather valve body; a first spring is arranged on the sliding rod and located in the rectangular groove in a sleeving mode. When the whole device is used and the pressure in the storage tank is large, the gas output of the breather valve body can be adjusted, so that a large amount of gas in the storage tank can be quickly discharged to the outside, and the storage tank is prevented from being broken due to overpressure.

Description

Technical Field

[0001] The utility model belongs to the technical field of breathing valves, and particularly relates to a breathing valve. Background Technique

[0002] A breathing valve is a commonly used safety protection device in industrial equipment, usually installed on the top of equipment such as storage tanks and containers. The main function of the breathing valve is to maintain the pressure balance between the inside of the equipment and the external environment. It can exhaust air outward when the pressure inside the equipment is too high, preventing equipment damage or rupture caused by overpressure.

[0003] For example, the Chinese patent with the publication number CN215568238U discloses a breathing valve, which includes a valve body, a top cover, an exhalation valve member and an inhalation valve member. The valve body is provided with a main passage, an exhalation passage and an inhalation passage. The main passage is communicated with the exhalation passage through an exhalation valve port, and the main passage is communicated with the inhalation passage through an inhalation valve port. Installation ports are provided above both the exhalation valve port and the inhalation valve port, and the top cover covers the installation ports. The top cover is provided with guide pipes at both the exhalation valve port and the inhalation valve port. The exhalation valve member closes the exhalation valve port and is located in the exhalation passage. The inhalation valve member closes the inhalation valve port and is located in the main passage. The exhalation valve member and the inhalation valve member have the same structure and both include a valve disc and a central rod fixed coaxially. The central rod is inserted into the guide pipe and forms a sliding fit. An acceleration spring is provided in the guide pipe above the central rod. The upper end of the acceleration spring is fixed to the position of the guide pipe and there is a gap between the lower end and the central rod, which can improve the acceleration of the valve disc's fall back, close faster, and can reduce the pressure difference floating amount after balance adjustment.

[0004] The above patent has the following problems:

[0005] This patent has some disadvantages when in use. For example, when the pressure in the storage tank is large, a large amount of gas needs to be discharged from the storage tank to ensure the same pressure as the outside. However, this device cannot adjust the size of the exhaust port, so the amount of gas discharged from the exhaust hole is fixed and it cannot quickly discharge a large amount of gas in the storage tank to the outside. In view of this, we propose a breathing valve. Content of the Utility Model

[0006] The purpose of the utility model is to provide a breathing valve to solve the problems raised in the above background technique.

[0007] In view of this, the utility model provides a breathing valve, including:

[0008] Breather valve body, a first clamping groove is formed at the top of the breather valve body, a first sealing plate is arranged in the first clamping groove, a first sealing gasket is fixedly installed at the bottom of the first sealing plate, a second clamping groove is formed at the top of the first sealing plate, a second sealing plate is arranged in the second clamping groove, a rectangular rod and a second sealing gasket are fixedly installed at the bottom of the second sealing plate, and the second sealing gasket is located on the periphery of the rectangular rod. A rectangular groove is formed in the rectangular rod, a sliding rod is slidably installed in the rectangular groove, the bottom end of the sliding rod penetrates through the bottom of the rectangular groove and is fixedly installed with a support frame, and the periphery of the support frame is fixed to the inner wall of the breather valve body. A first spring is sleeved on the sliding rod and located in the rectangular groove;

[0009] Fixing assembly, the fixing assembly is located on the breather valve body and is used to fix the first sealing plate;

[0010] Limiting assembly, the limiting assembly is located in the first sealing plate and is used to limit the second sealing plate.

[0011] In this technical solution, through the arranged second sealing plate, when the pressure in the storage tank is higher than the external pressure, the gas in the storage tank at this time will squeeze the second sealing plate to move upward. The upward movement of the second sealing plate will drive the rectangular rod to move upward. The upward movement of the rectangular rod will squeeze the first spring to contract through the rectangular groove. When the second sealing gasket at the bottom of the second sealing plate is higher than the top of the second clamping groove, the breather valve body can be opened. At this time, the gas in the storage tank will be discharged to the outside through the second clamping groove until the pressure in the storage tank is equal to the external pressure, avoiding the rupture of the storage tank due to overpressure. At the same time, under the action of the rebounding force of the first spring, the first spring will squeeze the rectangular rod to move downward, and the downward movement of the rectangular rod will drive the second sealing plate to move downward until the second sealing gasket at the bottom of the second sealing plate abuts against the second clamping groove. At this time, the second sealing plate can seal the breather valve body;

[0012] Through the arranged limiting assembly, when the pressure in the storage tank is relatively high, the personnel can limit the second sealing plate through the limiting assembly, and then through the arranged fixing assembly, the fixing assembly can release the fixation of the first sealing plate. Subsequently, the gas in the storage tank will squeeze the first sealing plate, causing the first sealing plate to move upward. The upward movement of the first sealing plate will drive the rectangular rod to move upward through the second sealing plate. The upward movement of the rectangular rod will squeeze the first spring to contract through the rectangular groove until the first sealing gasket at the bottom of the first sealing plate is higher than the top of the breather valve body, and the breather valve body can be opened. Subsequently, the gas in the storage tank will be discharged to the outside through the first clamping groove. Since the diameter of the first clamping groove is larger than that of the second clamping groove, the gas outlet volume of the first clamping groove will be larger than that of the second clamping groove, ensuring that when the pressure in the storage tank is relatively high, the gas outlet volume of the breather valve body can be adjusted, so that a large amount of gas in the storage tank can be quickly discharged to the outside, ensuring that the storage tank will not rupture due to overpressure.

[0013] In the above technical solution, further, the fixing assembly includes:

[0014] Two sliding grooves are both opened at the top of the breathing valve body, and the two sliding grooves are respectively located on both sides of the first sealing plate. A limiting block is slidably installed in the sliding groove. One end of the limiting block extends to the top of the first sealing plate. A circular groove is opened in the limiting block. Two limiting holes are opened at the bottom of the sliding groove. A limiting rod is slidably installed in the circular groove. The bottom end of the limiting rod penetrates through the bottom of the circular groove and extends into one of the limiting holes. A pull rod is fixedly installed at the top end of the limiting rod and located in the circular groove. The top end of the pull rod penetrates through the top of the circular groove and extends to the outside. A second spring is sleeved on the pull rod and located in the circular groove.

[0015] In this technical solution, when pulling up the two pull rods, the upward movement of the pull rods will drive the upward movement of the limiting rods. The upward movement of the limiting rods will squeeze the second spring to contract. Until the bottom end of the limiting rod moves out of one of the limiting holes, at this time the limiting rod can release the limit on the limiting block. Then move the limiting block until one end of the limiting block moves out of the top of the first sealing plate. Then release the pull rod. Under the action of the rebounding force of the second spring, the second spring will squeeze the limiting rod to move downward until the bottom end of the limiting rod is inserted into another limiting hole. At this time, the limiting rod can limit the limiting block. When one ends of the two limiting blocks both move out of the top of the first sealing plate, at this time the two limiting blocks can release the fixation of the first sealing plate.

[0016] In the above technical solution, further, one end of the limiting block abuts against the top of the first sealing plate. The bottom end of the limiting rod is in plug-in fit with the limiting hole. The pull rod is slidably connected with the circular groove and the limiting block. The two ends of the second spring are tightly welded to the limiting rod and the inner wall of the circular groove respectively.

[0017] In this technical solution, ensure that the limiting block can limit the first sealing plate, ensure that the bottom end of the limiting rod can be inserted into the limiting hole, ensure that the pull rod can slide normally in the circular groove and the limiting block, and ensure the structural stability of the second spring.

[0018] In the above technical solution, further, the limiting component includes:

[0019] Two rotating grooves are both opened at the top of the first sealing plate and are respectively located on both sides of the second sealing plate. A limiting plate is rotatably installed in the rotating groove. A knob is fixedly installed at the top of the limiting plate and located in the rotating groove. The top end of the knob penetrates through the top of the rotating groove and extends to the outside. A plurality of convex blocks are fixedly installed on the circumferential side of the knob and located inside the first sealing plate.

[0020] In this technical solution, rotate the two knobs respectively. The rotation of the knobs will drive the limiting plate to rotate. At the same time, the rotation of the knobs will also drive several bumps to rotate. At this time, the bumps will squeeze the breathing valve body, causing the bumps to deform slightly until one end of the limiting plate is stuck into the second sealing plate. At this time, the two limiting plates can limit the second sealing plate. At the same time, under the action of several bumps, it can be ensured that the knobs will not rotate without external force.

[0021] In the above technical solution, further, one end of the limiting plate is in snap-fit connection with the second sealing plate, and the knob is rotationally connected to the rotating groove and the first sealing plate.

[0022] In this technical solution, ensure that one end of the limiting plate can be stuck into the second sealing plate to ensure that the knob can rotate normally in the rotating groove and the first sealing plate.

[0023] In the above technical solution, further, several of the bumps are distributed at equal intervals in a ring.

[0024] In this technical solution, ensure that the forces on several bumps are uniform.

[0025] In the above technical solution, further, the support frame is tightly welded to the inner wall of the breathing valve body, and the two ends of the first spring are respectively tightly welded to the sliding rod and the inner wall of the rectangular groove.

[0026] In this technical solution, ensure the structural stability of the support frame and the breathing valve body, and ensure the structural stability of the first spring.

[0027] In the above technical solution, further, the bottom of the first sealing gasket is in contact with the bottom of the first card slot, and the bottom of the second sealing gasket is in contact with the bottom of the second card slot.

[0028] In this technical solution, ensure that the first sealing gasket can seal the first card slot, and ensure that the second sealing gasket can seal the second card slot.

[0029] The beneficial effects of the present utility model are:

[0030] 1. For this breathing valve, through the second sealing plate provided, when the pressure inside the storage tank is higher than the external pressure, the gas inside the storage tank will squeeze the second sealing plate to move upward. The upward movement of the second sealing plate will drive the rectangular rod to move upward. The upward movement of the rectangular rod will squeeze the first spring to contract through the rectangular groove. When the second gasket at the bottom of the second sealing plate is higher than the top of the second clamping groove, the breathing valve body can be opened. At this time, the gas inside the storage tank will be discharged to the outside through the second clamping groove until the pressure inside the storage tank is equal to the external pressure, avoiding the rupture of the storage tank due to overpressure. At the same time, under the action of the rebounding force of the first spring, the first spring will squeeze the rectangular rod to move downward, and the downward movement of the rectangular rod will drive the second sealing plate to move downward until the second gasket at the bottom of the second sealing plate abuts against the second clamping groove. At this time, the second sealing plate can seal the breathing valve body.

[0031] 2. For this breathing valve, through the provided limiting component, when the pressure inside the storage tank is relatively high, personnel can limit the second sealing plate through the limiting component. Subsequently, through the provided fixing component, the fixing component can release the fixation of the first sealing plate. Then, the gas inside the storage tank will squeeze the first sealing plate, causing the first sealing plate to move upward. The upward movement of the first sealing plate drives the rectangular rod to move upward through the second sealing plate. The upward movement of the rectangular rod squeezes the first spring to contract through the rectangular groove until the first gasket at the bottom of the first sealing plate is higher than the top of the breathing valve body, and the breathing valve body can be opened. Then, the gas inside the storage tank will be discharged to the outside through the first clamping groove. Since the diameter of the first clamping groove is larger than that of the second clamping groove, the gas outlet volume of the first clamping groove will be larger than that of the second clamping groove, ensuring that when the pressure inside the storage tank is relatively high, the gas outlet volume of the breathing valve body can be adjusted, so that a large amount of gas inside the storage tank can be quickly discharged to the outside, ensuring that the storage tank will not rupture due to overpressure. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 is the overall structural schematic diagram of the present utility model;

[0033] Figure 2 is the detailed internal structural schematic diagram of the breathing valve body of the present utility model;

[0034] Figure 3 is of the present utility model Figure 2 the enlarged structural schematic diagram at position A;

[0035] Figure 4 is of the present utility model Figure 2 the enlarged structural schematic diagram at position B;

[0036] Figure 5 is the exploded structural schematic diagram of the first sealing plate and the second sealing plate of the present utility model;

[0037] Figure 6 is the regional structural schematic diagram of the first sealing plate of the present utility model;

[0038] Figure 7 It is a schematic cross-sectional structure diagram of the first sealing plate in the present utility model;

[0039] Figure 8 It is a schematic regional structure diagram of the limiting plate in the present utility model.

[0040] The markings in the figure are shown as:

[0041] 1. Breather valve body; 2. First clamping groove; 3. First sealing plate; 4. First sealing gasket; 5. Second clamping groove; 6. Second sealing plate; 7. Second sealing gasket; 8. Rectangular rod; 9. Rectangular groove; 10. Sliding rod; 11. First spring; 12. Support frame; 13. Sliding groove; 14. Limiting block; 15. Circular groove; 16. Limiting rod; 17. Pull rod; 18. Second spring; 19. Limiting hole; 20. Rotating groove; 21. Limiting plate; 22. Knob; 23. Convex block. Specific embodiments

[0042] Next, the technical solutions in the embodiments of the present application will be clearly described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art belong to the scope of protection of the present application.

[0043] In the description of the present application, it should be noted that the terms used here are only for describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. For the convenience of description, the dimensions of each part shown in the drawings are not drawn according to the actual proportional relationship. Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the said technologies, methods, and devices should be regarded as part of the authorization specification. In all the examples shown and discussed here, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that: similar reference numerals and letters indicate similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0044] It should be noted that the terms "first", "second", etc. in the description and claims of this application are used to distinguish similar objects, rather than to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances, so that the embodiments of this application can be implemented in an order other than those illustrated or described here. Moreover, the objects distinguished by "first", "second", etc. are usually of the same category, and the number of objects is not limited. For example, the first object can be one or multiple. In addition, "and / or" in the description and claims means at least one of the connected objects. The character " / " generally indicates an "or" relationship between the associated objects before and after.

[0045] It should be noted that in the description of this application, the orientation or positional relationships indicated by the orientation terms such as "front, back, up, down, left, right", "horizontal, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing this application and simplifying the description. Without contrary instructions, these orientation terms do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation on the protection scope of this application; the terms "inside, outside" refer to the inside and outside relative to the contour of each component itself.

[0046] It should be noted that in this application, 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 explicitly listed, or further includes elements inherent to such process, method, article or device. Without more limitations, the element defined by the statement "including one..." does not exclude the existence of other identical elements in the process, method, article or device including that element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of this application is not limited to performing functions in the order shown or discussed. It may also include performing functions in a substantially simultaneous manner or in the reverse order according to the functions involved. For example, the described method can be performed in a different order than described, and various steps can be added, omitted, or combined. In addition, the features described with reference to certain examples can be combined in other examples.

[0047] Embodiment 1:

[0048] Please refer to Figure 1 - Figure 8 As shown in the figure, this embodiment provides a breathing valve, including:

[0049] Breather valve body 1, a first clamping groove 2 is formed at the top of the breather valve body 1, a first sealing plate 3 is arranged in the first clamping groove 2, a first sealing gasket 4 is fixedly installed at the bottom of the first sealing plate 3, a second clamping groove 5 is formed at the top of the first sealing plate 3, a second sealing plate 6 is arranged in the second clamping groove 5, a rectangular rod 8 and a second sealing gasket 7 are fixedly installed at the bottom of the second sealing plate 6, and the second sealing gasket 7 is located on the periphery of the rectangular rod 8. A rectangular groove 9 is formed in the rectangular rod 8, a sliding rod 10 is slidably installed in the rectangular groove 9, the bottom end of the sliding rod 10 penetrates through the bottom of the rectangular groove 9 and is fixedly installed with a support frame 12, and the periphery of the support frame 12 is fixed to the inner wall of the breather valve body 1. A first spring 11 is sleeved on the sliding rod 10 and located in the rectangular groove 9;

[0050] Fixing assembly, the fixing assembly is located on the breather valve body 1 and is used to fix the first sealing plate 3;

[0051] Limiting assembly, the limiting assembly is located in the first sealing plate 3 and is used to limit the second sealing plate 6.

[0052] Among them, through the arranged second sealing plate 6, when the pressure in the storage tank is higher than the external pressure, the gas in the storage tank at this time will squeeze the second sealing plate 6 to move upward. The upward movement of the second sealing plate 6 will drive the rectangular rod 8 to move upward. The upward movement of the rectangular rod 8 will squeeze the first spring 11 to contract through the rectangular groove 9. When the second sealing gasket 7 at the bottom of the second sealing plate 6 is higher than the top of the second clamping groove 5, the breather valve body 1 can be opened. At this time, the gas in the storage tank will be discharged to the outside through the second clamping groove 5 until the pressure in the storage tank is equal to the external pressure, avoiding the rupture of the storage tank due to overpressure. At the same time, under the action of the rebounding force of the first spring 11, the first spring 11 will squeeze the rectangular rod 8 to move downward, and the downward movement of the rectangular rod 8 will drive the second sealing plate 6 to move downward until the second sealing gasket 7 at the bottom of the second sealing plate 6 abuts against the second clamping groove 5. At this time, the second sealing plate 6 can seal the breather valve body 1;

[0053] Through the arranged limiting assembly, when the pressure in the storage tank is relatively high, the personnel can limit the second sealing plate 6 through the limiting assembly. Subsequently, through the arranged fixing assembly, the fixing assembly can release the fixation of the first sealing plate 3. Then, the gas in the storage tank will squeeze the first sealing plate 3, causing the first sealing plate 3 to move upward. The upward movement of the first sealing plate 3 drives the rectangular rod 8 to move upward through the second sealing plate 6. The upward movement of the rectangular rod 8 squeezes the first spring 11 to contract through the rectangular groove 9 until the first sealing gasket 4 at the bottom of the first sealing plate 3 is higher than the top of the breather valve body 1, and the breather valve body 1 can be opened. Then, the gas in the storage tank will be discharged to the outside through the first clamping groove 2. Since the diameter of the first clamping groove 2 is larger than that of the second clamping groove 5, the gas outlet volume of the first clamping groove 2 will be larger than that of the second clamping groove 5, ensuring that when the pressure in the storage tank is relatively high, the gas outlet volume of the breather valve body 1 can be adjusted, so that a large amount of gas in the storage tank can be quickly discharged to the outside, ensuring that the storage tank will not rupture due to overpressure.

[0054] Example 2:

[0055] This embodiment provides a breathing valve. In addition to including the technical solutions of the above embodiments, it also has the following technical features. The fixing component includes:

[0056] Two sliding grooves 13 are both opened at the top of the breathing valve body 1, and the two sliding grooves 13 are respectively located on both sides of the first sealing plate 3. A limiting block 14 is slidably installed in the sliding groove 13. One end of the limiting block 14 extends to the top of the first sealing plate 3. A circular groove 15 is opened in the limiting block 14. Two limiting holes 19 are opened at the bottom of the sliding groove 13. A limiting rod 16 is slidably installed in the circular groove 15. The bottom end of the limiting rod 16 penetrates through the bottom of the circular groove 15 and extends into one of the limiting holes 19. A pull rod 17 is fixedly installed at the top end of the limiting rod 16 and located in the circular groove 15. The top end of the pull rod 17 penetrates through the top of the circular groove 15 and extends to the outside. A second spring 18 is sleeved on the pull rod 17 and located in the circular groove 15.

[0057] Among them, when pulling up the two pull rods 17, the upward movement of the pull rods 17 will drive the upward movement of the limiting rod 16. The upward movement of the limiting rod 16 will squeeze the second spring 18 to contract. Until the bottom end of the limiting rod 16 moves out of one of the limiting holes 19, at this time, the limiting rod 16 can release the limit on the limiting block 14. When moving the limiting block 14 until one end of the limiting block 14 moves out of the top of the first sealing plate 3, then release the pull on the pull rod 17. Under the action of the rebounding force of the second spring 18, the second spring 18 will squeeze the limiting rod 16 to move downward until the bottom end of the limiting rod 16 is inserted into the other limiting hole 19. At this time, the limiting rod 16 can limit the limiting block 14. When one ends of the two limiting blocks 14 both move out of the top of the first sealing plate 3, at this time, the two limiting blocks 14 can release the fixation on the first sealing plate 3.

[0058] Example 3:

[0059] This embodiment provides a breathing valve. In addition to including the technical solutions of the above embodiments, it also has the following technical features. One end of the limiting block 14 abuts against the top of the first sealing plate 3. The bottom end of the limiting rod 16 is in plug-in fit with the limiting hole 19. The pull rod 17 is slidably connected with the circular groove 15 and the limiting block 14. The two ends of the second spring 18 are respectively tightly welded to the limiting rod 16 and the inner wall of the circular groove 15.

[0060] Among them, ensure that the limiting block 14 can limit the first sealing plate 3, ensure that the bottom end of the limiting rod 16 can be inserted into the limiting hole 19, ensure that the pull rod 17 can slide normally in the circular groove 15 and the limiting block 14, and ensure the structural stability of the second spring 18.

[0061] Example 4:

[0062] This embodiment provides a breathing valve. In addition to the technical solutions of the above embodiments, it also has the following technical features. The limiting component includes:

[0063] Two rotating grooves 20 are both opened at the top of the first sealing plate 3 and are respectively located on both sides of the second sealing plate 6. A limiting plate 21 is rotatably installed in the rotating groove 20. At the top of the limiting plate 21 and located in the rotating groove 20, a knob 22 is fixedly installed. The top end of the knob 22 penetrates through the top of the rotating groove 20 and extends to the outside. A plurality of bumps 23 are fixedly installed on the circumferential side of the knob 22 and inside the first sealing plate 3.

[0064] Among them, by rotating the two knobs 22 respectively, the rotation of the knob 22 will drive the rotation of the limiting plate 21. At the same time, the rotation of the knob 22 will also drive the rotation of a plurality of bumps 23. At this time, the bumps 23 will squeeze the breathing valve body 1, causing the bumps 23 to undergo slight deformation until one end of the limiting plate 21 is stuck into the second sealing plate 6. At this time, the two limiting plates 21 can limit the second sealing plate 6. At the same time, under the action of a plurality of bumps 23, it can be ensured that the knob 22 will not rotate without external force.

[0065] Embodiment 5:

[0066] This embodiment provides a breathing valve. In addition to the technical solutions of the above embodiments, it also has the following technical features. One end of the limiting plate 21 is in snap-fit connection with the second sealing plate 6, and the knob 22 is rotatably connected to the rotating groove 20 and the first sealing plate 3.

[0067] Among them, ensure that one end of the limiting plate 21 can be stuck into the second sealing plate 6 to ensure that the knob 22 can rotate normally in the rotating groove 20 and the first sealing plate 3.

[0068] Embodiment 6:

[0069] This embodiment provides a breathing valve. In addition to the technical solutions of the above embodiments, it also has the following technical features. A plurality of bumps 23 are distributed at equal intervals in a ring shape.

[0070] Among them, ensure that the forces on a plurality of bumps 23 are uniform.

[0071] Embodiment 7:

[0072] This embodiment provides a breathing valve. In addition to the technical solutions of the above embodiments, it also has the following technical features. The support frame 12 is tightly welded to the inner wall of the breathing valve body 1, and both ends of the first spring 11 are tightly welded to the sliding rod 10 and the inner wall of the rectangular groove 9 respectively.

[0073] Among them, ensure the structural stability of the support frame 12 and the breathing valve body 1, and ensure the structural stability of the first spring 11.

[0074] Example 8:

[0075] This example provides a breathing valve. In addition to including the technical solutions of the above examples, it also has the following technical features. The bottom of the first sealing gasket 4 is attached to the bottom of the first clamping groove 2, and the bottom of the second sealing gasket 7 is attached to the bottom of the second clamping groove 5.

[0076] Among them, it is ensured that the first sealing gasket 4 can seal the first clamping groove 2, and the second sealing gasket 7 can seal the second clamping groove 5.

[0077] It is worth noting that the bump 23 has a certain toughness, ensuring that the bump 23 can undergo slight deformation and guaranteeing the structural stability of the bump 23.

[0078] It should be noted that the breathing valve body 1 is fixedly installed at the air outlet of the storage tank and is only used for intake. At the same time, the storage tank is also provided with an intake hole that is only used for intake, ensuring the structural stability of the overall device.

[0079] Working principle: When in use, when the pressure inside the storage tank is higher than the external pressure, the gas inside the storage tank will squeeze the second sealing plate 6 to move upward. The upward movement of the second sealing plate 6 will drive the rectangular rod 8 to move upward. The upward movement of the rectangular rod 8 will squeeze the first spring 11 to contract through the rectangular groove 9. When the second gasket 7 at the bottom of the second sealing plate 6 is higher than the top of the second clamping groove 5, the breathing valve body 1 can be opened. At this time, the gas inside the storage tank will be discharged to the outside through the second clamping groove 5 until the pressure inside the storage tank is equal to the external pressure, avoiding the rupture of the storage tank due to overpressure. At the same time, under the action of the rebounding force of the first spring 11, the first spring 11 will squeeze the rectangular rod 8 to move downward, and the downward movement of the rectangular rod 8 will drive the second sealing plate 6 to move downward until the second gasket 7 at the bottom of the second sealing plate 6 abuts against the second clamping groove 5. At this time, the second sealing plate 6 can seal the breathing valve body 1. When the pressure inside the storage tank is relatively high, personnel can first rotate the two knobs 22 respectively. The rotation of the knob 22 will drive the limiting plate 21 to rotate. At the same time, the rotation of the knob 22 will also drive a number of convex blocks 23 to rotate. At this time, the convex blocks 23 will squeeze the breathing valve body 1, causing the convex blocks 23 to undergo slight deformation until one end of the limiting plate 21 is stuck into the second sealing plate 6. At this time, the two limiting plates 21 can limit the second sealing plate 6. At the same time, under the action of a number of convex blocks 23, it can be ensured that the knob 22 will not rotate without external force. Subsequently, personnel can pull the two pull rods 17 upward respectively. The upward movement of the pull rod 17 will drive the limiting rod 16 to move upward. The upward movement of the limiting rod 16 will squeeze the second spring 18 to contract until the bottom end of the limiting rod 16 moves out of one of the limiting holes 19. At this time, the limiting rod 16 can release the limit on the limiting block 14. Move the limiting block 14 until one end of the limiting block 14 moves out of the top of the first sealing plate 3, and then release the pull on the pull rod 17. Under the action of the rebounding force of the second spring 18, the second spring 18 will squeeze the limiting rod 16 to move downward until the bottom end of the limiting rod 16 is inserted into another limiting hole 19. At this time, the limiting rod 16 can limit the limiting block 14. When one ends of the two limiting blocks 14 both move out of the top of the first sealing plate 3, at this time, the two limiting blocks 14 can release the fixation of the first sealing plate 3. Subsequently, the gas inside the storage tank will squeeze the first sealing plate 3, causing the first sealing plate 3 to move upward. The upward movement of the first sealing plate 3 will drive the rectangular rod 8 to move upward through the second sealing plate 6. The upward movement of the rectangular rod 8 will squeeze the first spring 11 to contract through the rectangular groove 9 until the first gasket 4 at the bottom of the first sealing plate 3 is higher than the top of the breathing valve body 1, and the breathing valve body 1 can be opened. Subsequently, the gas inside the storage tank will be discharged to the outside through the first clamping groove 2. Since the diameter of the first clamping groove 2 is larger than that of the second clamping groove 5, the gas outlet volume of the first clamping groove 2 will be larger than that of the second clamping groove 5, ensuring that when the pressure inside the storage tank is relatively high, the gas outlet volume of the breathing valve body 1 can be adjusted, so that a large amount of gas inside the storage tank can be quickly discharged to the outside, ensuring that the storage tank will not rupture due to overpressure.

[0080] The embodiments of the present application have been described above in conjunction with the accompanying drawings. Without conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application is not limited to the above specific embodiments. The above specific embodiments are merely illustrative and not restrictive. Under the inspiration of the present application, those of ordinary skill in the art can also make many forms without departing from the purpose of the present application and the scope protected by the claims, and all of them fall within the protection scope of the present application.

Claims

1. A breathing valve, characterized in that: include: A breathing valve body (1), wherein a card slot (2) is provided at the top of the breathing valve body (1), a sealing plate (3) is provided in the card slot (2), a sealing gasket (4) is fixedly installed at the bottom of the sealing plate (3), a card slot (5) is provided at the top of the sealing plate (3), a sealing plate (6) is provided in the card slot (5), a rectangular rod (8) and a sealing gasket (7) are fixedly installed at the bottom of the sealing plate (6), and the sealing gasket (7) is located on the peripheral side of the rectangular rod (8), a rectangular groove (9) is provided in the rectangular rod (8), a sliding rod (10) is slidably installed in the rectangular groove (9), the bottom end of the sliding rod (10) passes through the bottom of the rectangular groove (9) and is fixedly installed with a support frame (12), and the peripheral side of the support frame (12) is fixed to the inner wall of the breathing valve body (1), and a spring (11) is sleeved on the sliding rod (10) and located in the rectangular groove (9); A fixing assembly, the fixing assembly being located on the breathing valve body (1) and being used to fix the sealing plate 1 (3); A limiting assembly is located in the sealing plate one (3) and is used to limit the sealing plate two (6).

2. A breathing valve according to claim 1, characterized in that: The fixing assembly comprises: Two sliding grooves (13), both of which are provided at the top of the breathing valve body (1), and the two sliding grooves (13) are respectively located on both sides of the sealing plate (3), a limit block (14) is slidably installed in the sliding groove (13), one end of the limit block (14) extends to the top of the sealing plate (3), a circular groove (15) is provided in the limit block (14), and two limit holes (19) are provided at the bottom of the sliding groove (13) A limiting rod (16) is slidably installed in the circular groove (15), the bottom end of the limiting rod (16) passes through the bottom of the circular groove (15) and extends into one of the limiting holes (19), a pull rod (17) is fixedly installed at the top of the limiting rod (16) and located in the circular groove (15), the top end of the pull rod (17) passes through the top of the circular groove (15) and extends to the outside, and a spring 2 (18) is sleeved on the pull rod (17) and located in the circular groove (15).

3. A breathing valve according to claim 2, characterized in that: One end of the limit block (14) is against the top of the sealing plate (3), the bottom end of the limit rod (16) is plugged into the limit hole (19), the pull rod (17) is slidably connected to the circular groove (15) and the limit block (14), and the two ends of the spring (18) are tightly welded to the limit rod (16) and the inner wall of the circular groove (15), respectively.

4. A breathing valve according to claim 1, characterized in that: The limiting component comprises: Two rotating grooves (20), both of which are opened at the top of the sealing plate (3) and are respectively located on both sides of the sealing plate (6), a limit plate (21) is rotatably installed in the rotating groove (20), a knob (22) is fixedly installed at the top of the limit plate (21) and located in the rotating groove (20), the top end of the knob (22) passes through the top of the rotating groove (20) and extends to the outside, and a plurality of protrusions (23) are fixedly installed on the peripheral side of the knob (22) and located in the sealing plate (3).

5. A breathing valve according to claim 4, characterized in that: One end of the limit plate (21) is snap-fitted with the second sealing plate (6), and the knob (22) is rotationally connected with the rotating groove (20) and the first sealing plate (3).

6. A breathing valve according to claim 4, characterized in that: The plurality of protrusions (23) are distributed in a ring-shaped manner with equal intervals.

7. A breathing valve according to claim 1, characterized in that: The support frame (12) is tightly welded to the inner wall of the breathing valve body (1), and the two ends of the spring 1 (11) are tightly welded to the sliding rod (10) and the inner wall of the rectangular groove (9) respectively.

8. A breathing valve according to claim 1, characterized in that: The bottom of the sealing gasket 1 (4) is in contact with the bottom of the card slot 1 (2), and the bottom of the sealing gasket 2 (7) is in contact with the bottom of the card slot 2 (5).

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