Folding vent valve for fluid
By designing a folding ventilation valve, the safety hazards and high-altitude maintenance risks caused by changes in the oil storage tank pressure are solved, and convenient maintenance methods are provided, which improves safety and convenience.
Patent Information
- Application Number
- CN202422670866.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-01
- Publication Date
- 2025-08-26
- Estimated Expiration
- 2034-11-01
AI Technical Summary
Safety risks caused by changes in the internal pressure of the oil storage tank. The maintenance of existing vent pipes requires high-altitude operations, which poses safety risks and inconveniences.
A folding ventilation valve is designed, including a housing, a shaft core and a movable rod. The opening and closing of the fluid channel is achieved through a rotating connection, allowing the movable rod to rotate between the first position and the second position, the channel is connected in the first position, and the channel is partitioned in the second position, so as to facilitate maintenance and repair of pipe components.
It realizes that the movable rod is close to the ground without affecting the normal operation of the pipeline, which is easy to maintain and repair, and improves safety and convenience.
Smart Images
Figure CN223270693U_ABST
Abstract
Description
Technical Field
[0001] The present disclosure generally relates to the field of valve technology. More specifically, the present disclosure relates to a collapsible vent valve for fluid. Background Art
[0002] Fuels such as gasoline can be stored in tanks. During storage, the internal pressure of the tanks fluctuates due to temperature fluctuations, fuel volatilization, and vehicle refueling and unloading operations. When the internal pressure of the tank is too high, it may cause the tank to swell, deform, or even rupture, posing safety hazards such as fuel leaks. When the internal pressure of the tank is too low, it may form a negative pressure, allowing external air to be drawn in, increasing the risk of oil oxidation and affecting fuel quality.
[0003] The oil tank vent pipe is a crucial feature of any gas station, connecting the tank to the atmosphere. The breather valve in the pipe automatically controls the opening and closing of the gas passageway inside and outside the tank, thereby maintaining a pressure balance inside and outside the tank and preventing safety hazards caused by excessive or insufficient pressure. To ensure gas station safety, the vent pipe, breather valve, and flame arrester must be regularly inspected and maintained to ensure proper operation. According to the national standard "GB 50156-2021 Technical Standard for Automobile Gasoline, Gas, and Hydrogen Stations," the height of the vent pipe opening must be no less than 4 meters above the ground. Therefore, inspecting the vent pipe, breather valve, and flame arrester requires the use of ladders, lifts, and other tools at height, which is dangerous and detrimental to routine maintenance.
[0004] In view of this, there is an urgent need to provide a foldable vent valve for fluid, which can facilitate the maintenance and repair of pipeline components far from the ground and increase safety during the maintenance process. Utility Model Content
[0005] In order to at least solve one or more of the above-mentioned technical problems, the present disclosure proposes a solution of a foldable vent valve for fluid in multiple aspects.
[0006] In a first aspect, the present disclosure provides a foldable vent valve for fluid, the foldable vent valve comprising: a shell, an axis core and a movable rod; wherein an inner cavity is formed inside the shell for accommodating the axis core; a first through hole parallel to a first direction is formed at the lower portion of the shell for circulating the fluid; a U-shaped groove is formed on the side of the shell, the shape of the U-shaped groove matches the cross-section of the movable rod for limiting the movable rod; the axis core is arranged in the inner cavity, the side shape of the axis core matches the side shape of the inner cavity; the axis core is formed with a second through hole parallel to the first direction , the first end of the second through hole is connected to the first end of the movable rod; the side of the shaft core is rotatably connected to the inner side of the shell, and the shaft core can rotate around the symmetry axis of the shaft core in the axial direction, so that the shaft core and the movable rod can rotate between a first position and a second position; wherein, when the shaft core and the movable rod are in the first position, the first through hole and the second through hole are connected, and the fluid can flow in the movable rod; when the shaft core and the movable rod are in the second position, the first through hole and the second through hole are separated, and no fluid flows in the movable rod, which is used to inspect the second end of the movable rod.
[0007] In some embodiments, the inner cavity is shaped like a first cylinder, the shaft core is shaped like a second cylinder, and the side of the first cylinder is rotatably connected to the side of the second cylinder.
[0008] In some embodiments, the shell also includes a first shell and a second shell detachably connected to the first shell, and an inner cavity is formed between the first shell and the second shell; a first through hole is formed in the lower part of the first shell, and a first groove is formed on the side of the first shell; the second shell is arranged on the upper part of the first shell, and a second groove is formed on its side to match the first groove, wherein the first groove and the second groove form the U-shaped groove.
[0009] In some embodiments, the first end of the second through hole is threadedly connected to the first end of the movable rod, wherein the first end of the second through hole is at least partially provided with threads.
[0010] In some embodiments, the second through hole includes a first axial core hole and a second axial core hole connected to the first axial core hole; wherein the axes of the first axial core hole and the second axial core hole are parallel.
[0011] In some embodiments, the second through hole further includes a third axial core hole, one end of the third axial core hole is connected to the first axial core hole, and the other end of the third axial core hole is connected to the second axial core hole.
[0012] In some embodiments, the angle between the first axis when the movable rod is in the first position and the second axis when the movable rod is in the second position is 90 degrees, and the second axis is perpendicular to the first direction.
[0013] In some embodiments, the foldable ventilation valve also includes a sealing liner, a first sealing limit groove is formed on the side of the sealing liner, and a first sealing through hole parallel to the first direction is formed on the lower portion of the sealing liner; wherein the sealing liner is arranged between the shaft core and the outer shell, and the interior of the sealing liner is rotatably connected to the exterior of the shaft core; the first sealing limit groove coincides with the U-shaped groove from the first direction; the first sealing through hole coincides with the first through hole from the first direction.
[0014] In some embodiments, the sealing liner is made of polytetrafluoroethylene.
[0015] In some embodiments, the foldable ventilation valve also includes a pipe parallel to the first direction, a lower ventilation pipe and an upper ventilation pipe; wherein, one end of the pipe is connected to the first through hole; the lower ventilation pipe is arranged on the lower side of the pipe and is connected to the other end of the pipe through a flange or thread; the upper ventilation pipe is arranged on the upper side of the movable rod and is connected to the movable rod through a flange or thread.
[0016] By using a foldable vent valve for fluid as provided above, the pipeline can operate normally without being affected when in the first position. When the pipeline components on the movable rod need to be maintained or repaired, the movable rod can be placed in the second position closer to the ground, thereby facilitating the maintenance and repair of the pipeline components and increasing the safety of maintenance or repair. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] The above and other objects, features and advantages of the exemplary embodiments of the present disclosure will become readily understood by reading the detailed description below with reference to the accompanying drawings. In the accompanying drawings, several embodiments of the present disclosure are shown in an illustrative and non-limiting manner, and the same or corresponding reference numerals represent the same or corresponding parts, wherein:
[0018] Figure 1 An oblique view of a foldable vent valve according to some embodiments of the present disclosure is shown when the movable lever is in a first position;
[0019] Figure 2 A front view of a collapsible vent valve according to some embodiments of the present disclosure is shown with the movable lever in a second position;
[0020] Figure 3 An exploded view of a collapsible vent valve including a sealing liner according to some embodiments of the present disclosure is shown;
[0021] Figure 4a A cross-sectional view showing a core of some embodiments of the present disclosure; and
[0022] Figure 4b A cross-sectional view of a shaft core according to some other embodiments of the present disclosure is shown.
[0023] Tag Name
[0024] 10 housing, 13 U-shaped groove, 14 first housing, 141 first groove, 15 second housing, 151 second groove;
[0025] 20 axis core, 21 second through hole; 211 first axis core hole; second axis core hole 212; third axis core hole 213;
[0026] 30 movable rods;
[0027] 40 sealing liner, 41 first sealing limiting groove, 42 first sealing through hole, 43 first sealing portion, 431 second sealing limiting groove, 44 second sealing portion, 441 third sealing limiting groove, 442 third sealing limiting block;
[0028] 50 pipes. DETAILED DESCRIPTION
[0029] The following will clearly and completely describe the technical solutions in the embodiments of this disclosure in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of this disclosure, not all of them. Based on the embodiments of this disclosure, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of this disclosure.
[0030] It should be understood that the terms “include” and “comprising” used in the specification and claims of the present disclosure indicate the presence of described features, integers, steps, operations, elements and / or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or collections thereof.
[0031] It should also be understood that the terminology used in this disclosure is for the purpose of describing specific embodiments only and is not intended to limit the disclosure. As used in this disclosure and the claims, the singular forms "a," "an," and "the" are intended to include the plural forms unless the context clearly indicates otherwise. It should be further understood that the term "and / or" as used in this disclosure and the claims refers to any and all possible combinations of one or more of the associated listed items, including and including these combinations.
[0032] As used in this specification and claims, the term "if" can be interpreted as "when" or "upon" or "in response to determining" or "in response to detecting," depending on the context. Similarly, the phrase "if it is determined" or "if [described condition or event] is detected" can be interpreted as meaning "upon determination" or "in response to determining" or "upon detection of [described condition or event]" or "in response to detecting [described condition or event]," depending on the context.
[0033] The specific embodiments of the present disclosure are described in detail below with reference to the accompanying drawings.
[0034] Example application scenarios
[0035] Figure 1 An oblique view of a foldable vent valve according to some embodiments of the present disclosure is shown when the movable rod is in a first position. Figure 2 A front view of a foldable vent valve according to some embodiments of the present disclosure is shown with the movable lever in the second position. It should be understood that the first, second, and third directions mentioned below are all directions shown in the figure, and the first, second, and third directions can be the directions of the arrows in the figure or directions opposite to the arrows. The first direction can be divided into an upper side and a lower side, the second direction can be divided into a front side and a rear side, and the third direction can be divided into a left side and a right side.
[0036] like Figure 1 and Figure 2As shown, the foldable vent valve includes: a shell 10, a shaft core 20 and a movable rod 30; wherein, an inner cavity is formed inside the shell 10 for accommodating the shaft core 20; a first through hole parallel to the first direction is formed at the lower portion of the shell 10 for circulating the fluid; a U-shaped groove 13 is formed on the side of the shell 10, and the shape of the U-shaped groove 13 matches the cross section of the movable rod 30 for limiting the movable rod 30; the shaft core 20 is arranged in the inner cavity, and the side shape of the shaft core 20 matches the side shape of the inner cavity; the shaft core 20 is formed with a second through hole 21 parallel to the first direction, and the first end of the second through hole 21 is aligned with the cross section of the movable rod 30. The first end of the movable rod 30 is connected; the side of the shaft core 20 is rotatably connected to the inner side of the outer shell 10, and the shaft core 20 can rotate around the symmetry axis of the shaft core 20 in the axial direction, so that the shaft core 20 and the movable rod 30 can rotate between a first position and a second position; wherein, when the shaft core 20 and the movable rod 30 are in the first position, the first through hole and the second through hole 21 are connected, and the fluid can flow in the movable rod 30; when the shaft core 20 and the movable rod 30 are in the second position, the first through hole and the second through hole 21 are separated, and no fluid flows in the movable rod 30, which is used to inspect the second end of the movable rod 30.
[0037] In some embodiments, the housing 10 may be a shell having a certain thickness. The housing 10 may be hollow, forming an inner cavity. The inner cavity may be spherical, hemispherical, or cylindrical. It is understood that the housing 10 may be directly cast as a single piece, or may be composed of multiple components that are fixedly or detachably connected. Preferably, the housing 10 may be composed of multiple detachably connected components to facilitate the placement of different components in the inner cavity.
[0038] In some embodiments, the lower portion of the housing 10 may be formed with a first through-hole parallel to the first direction for circulating the fluid. The first through-hole may be located at the center of the lower portion of the housing 10, i.e., the centerline of the first through-hole may coincide with the centerline of the housing 10 parallel to the first direction. The first through-hole may also be located at an eccentric position of the lower portion of the housing 10. In this case, the centerline of the first through-hole may not coincide with the centerline of the housing 10 parallel to the first direction.
[0039] In some embodiments, a U-shaped groove 13 is formed on the side of the aforementioned shell 10. The aforementioned U-shaped groove 13 can be provided entirely in the upper half of the aforementioned shell 10, or can be provided in the upper half and the lower half of the aforementioned shell 10. It should be understood that the shape of the aforementioned U-shaped groove 13 can match the cross-section of the movable rod 30, and the aforementioned cross-section can be a cross-section perpendicular to the axis of the movable rod 30. Specifically, the width of the aforementioned U-shaped groove 13 can be equal to the diameter of the aforementioned cross-section. It can be understood that the width of the aforementioned U-shaped groove 13 can be the length of the aforementioned U-shaped groove 13 in the second direction, and the diameter of the aforementioned cross-section can be the length of the aforementioned movable rod 30 in the second direction. It should be understood that the aforementioned movable rod 30 can move within the range of the U-shaped groove 13, and the aforementioned U-shaped groove 13 can limit the movable rod 30.
[0040] In some embodiments, the aforementioned shaft core 20 can be set in the aforementioned inner cavity, and the aforementioned shaft core 20 can be set as a sphere, a cylinder or other shapes. The side shape of the aforementioned shaft core 20 can match the side shape of the inner cavity. When the aforementioned shaft core 20 is a sphere, the side of the aforementioned inner cavity can be set as a spherical surface that matches the aforementioned sphere. When the aforementioned shaft core 20 is a cylinder, the side of the aforementioned inner cavity can be set as a cylindrical surface that matches the side of the aforementioned cylinder. It can be understood that the bottom shape of the aforementioned shaft core 20 can be the same as the shape of the bottom of the aforementioned inner cavity, or it can be different.
[0041] In some embodiments, when the aforementioned shaft core 20 is a cylinder, the axis of the aforementioned cylinder may be parallel to the aforementioned second direction. The bottom of the aforementioned cylinder may be a plane perpendicular to the second direction, and the surface of the portion of the aforementioned inner cavity perpendicular to the second direction may be a plane that matches the bottom of the aforementioned cylinder. The surface of the portion of the aforementioned inner cavity perpendicular to the second direction may also be an arc surface that does not match the bottom of the cylinder. In this case, a limiting component may be provided in the aforementioned inner cavity, which may be used to limit the movement of the aforementioned shaft core 20 in the second direction. In some embodiments, the aforementioned limiting component may be a limiting block provided in the inner cavity along the second direction that abuts against the bottom and top surfaces of the cylinder. The aforementioned limiting component may also be an arc surface of the inner cavity opposite to the bottom and top surfaces of the cylinder. By designing the size of the aforementioned arc surface, the aforementioned arc surface can be abutted against the bottom and top surfaces of the cylinder to form a limit.
[0042] In some embodiments, the shaft core 20 may be formed with a second through hole 21 parallel to the first direction. It is understood that when the shaft core 20 is a cylinder, the axis of the cylinder may be parallel to the second direction, the upper portion of the cylinder may be the side surface of the cylinder, and the bottom and top surfaces of the cylinder may be perpendicular to the second direction. The side surface of the cylinder may be formed with a second through hole 21 parallel to the first direction.
[0043] In some embodiments, the second through hole 21 can be fixedly connected to the first end of the movable rod 30. For example, the shaft core 20 can be cast as one piece with the movable rod 30, or the shaft core 20 can be welded to the movable rod 30. In some embodiments, the second through hole 21 can be detachably connected to the first end of the movable rod 30, for example, by a snap connection or a threaded connection. Preferably, the second through hole 21 can be threadedly connected to the first end of the movable rod 30, which is detachable for easy cleaning and has good stability. It is understandable that the other end of the second through hole can be opposite to the first through hole.
[0044] In some embodiments, the side of the aforementioned shaft core 20 can be rotatably connected to the inner side of the shell 10, and the shape of the side of the aforementioned shaft core 20 can match the shape of the inner side of the aforementioned shell 10. In some embodiments, the side of the shaft core 20 and the inner side of the shell 10 can be the same size, and the two can be clearance-fitted. When the aforementioned shaft core 20 is a cylinder, the axis of the aforementioned cylinder can be parallel to the second direction, and the aforementioned cylinder can rotate around the axis of the aforementioned cylinder. In some embodiments, the aforementioned shaft core 20 can be driven manually or by a motor, so that the aforementioned shaft core 20 can drive the aforementioned movable rod 30 to move between the first position and the second position. It should be understood that when using a motor to drive the aforementioned shaft core 20, attention should be paid to compliance with explosion-proof safety technology and other requirements.
[0045] In some embodiments, when the second through hole 21 of the shaft core 20 is opposite to the first through hole, the shaft core 20 may be in the first position. At this time, the fluid may flow into the second through hole 21 through the first through hole. Since the first end of the second through hole 21 may be connected to the first end of the movable rod 30, the fluid may flow into the movable rod 30 from the second through hole 21. When the shaft core 20 and the movable rod 30 are rotated to the second position, the first through hole is opposite to the side of the shaft core 20. At this time, when the fluid in the first through hole flows to the position above the first through hole, it may be blocked by the side of the shaft core 20 and cannot continue to flow. At this time, no fluid flows into the movable rod 30, and the movable rod 30 in the first position may be in a disconnected state.
[0046] By providing the foldable vent valve, when the movable rod 30 is in the first position, the pipeline can operate normally without being affected. When the movable rod 30 is in the second position, the pipeline can be disconnected. At the same time, the movable rod 30 is closer to the ground, making it easier to maintain or repair the pipeline components on the movable rod 30, thereby increasing safety.
[0047] In some embodiments, the inner cavity is shaped like a first cylinder, the shaft core 20 is shaped like a second cylinder, and the side of the first cylinder is rotatably connected to the side of the second cylinder.
[0048] In some embodiments, the axis of the first cylinder may be parallel to the second direction, and the axis of the second cylinder may also be parallel to the second direction. Specifically, when the first cylindrical axis of the first cylinder coincides with the second cylindrical axis of the second cylinder, the bottom diameter of the first cylinder may be the same as the bottom diameter of the second cylinder, the side surface of the first cylinder may have a clearance fit with the side surface of the second cylinder, and the first cylinder may rotate about the first cylindrical axis.
[0049] In some embodiments, the axis of the first cylinder may not coincide with the axis of the second cylinder. In this case, the bottom diameter of the first cylinder may be smaller than the bottom diameter of the second cylinder. The first cylinder may rotate around the axis of the first cylinder while revolving around the axis of the second cylinder.
[0050] Figure 3 An exploded view of a foldable vent valve including a sealing liner according to some embodiments of the present disclosure is shown. Figure 3 As shown, the shell also includes a first shell 14 and a second shell 15 detachably connected to the first shell 14, and an inner cavity is formed between the first shell 14 and the second shell 15; a first through hole is formed at the lower portion of the first shell 14, and a first groove 141 is formed at the side portion of the first shell 14; the second shell 15 is arranged at the upper portion of the first shell 14, and a second groove 151 is formed at the side portion thereof to match the first groove 141, wherein the first groove 141 and the second groove 151 form the U-shaped groove 13.
[0051] In some embodiments, the housing can be configured as two detachable parts. Specifically, the housing can include a first housing 14 and a second housing 15 disposed above the first housing 14. The first and second housings 14, 15 can be connected by a snap-fit or threaded connection. Preferably, a threaded connection is selected, as it offers greater load-bearing capacity and self-locking properties.
[0052] In some embodiments, the shape of the first groove 141 can match the cross-section of the movable rod 30. Specifically, the length of the first groove 141 in the second direction can be equal to the length of the cross-section of the movable rod 30 in the second direction. In some embodiments, the shape of the second groove 151 can match the cross-section of the movable rod 30. Specifically, the length of the second groove 151 in the second direction can be equal to the length of the cross-section of the movable rod 30 in the second direction. In some embodiments, after the first housing 14 and the second housing 15 are connected together, the first groove 141 and the second groove 151 can together form a U-shaped groove 13.
[0053] In some embodiments, the first end of the second through hole 21 is threadedly connected to the first end of the movable rod 30 , wherein the first end of the second through hole 21 is at least partially provided with threads.
[0054] In some embodiments, the first end of the second through hole 21 may be partially or completely threaded. In some embodiments, the upper side of the second through hole 21 may be threaded, while the lower side of the second through hole 21 may be smooth. The provision of the threaded portion can reduce stress concentration and avoid excessive stress at the threaded end, thereby improving the strength of the connection.
[0055] Figure 4a shows a cross-sectional view of a shaft core according to some embodiments of the present disclosure; Figure 4b sectional views of the shaft cores of other embodiments of the present disclosure are shown. Figure 4a As shown, the second through hole 21 includes a first axial core hole 211 and a second axial core hole 212 connected to the first axial core hole; wherein the axes of the first axial core hole 211 and the second axial core hole 212 are parallel. In some embodiments, the inner side of the first axial core hole 211 may be provided with a thread, and the inner side of the second axial core hole 212 may be provided with a smooth surface. Figure 4b As shown, the second through hole 21 further includes a third axial core hole 213 , one end of the third axial core hole 213 is connected to the first axial core hole 211 , and the other end of the third axial core hole 213 is connected to the second axial core hole 212 .
[0056] In some embodiments, the aforementioned first axis core hole 211 can be arranged at the upper part of the aforementioned axis core 20, and the aforementioned second axis core hole 212 can be arranged at the lower part of the aforementioned axis core 20 and arranged opposite to the first through hole. The first axis core hole 211 can be provided with a thread, and the aforementioned second axis core hole 212 can be provided with a smooth surface. In some embodiments, the aforementioned first axis core hole 211 can coincide with the center line of the aforementioned shell 10 in the first direction, and the aforementioned second axis core hole 212 can coincide with or not coincide with the center line of the aforementioned shell 10 in the first direction. When the second axis core hole 212 does not coincide with the center line of the aforementioned shell 10 in the first direction, the aforementioned first axis core hole 211 and the second axis core hole 212 can be connected by a third axis core hole 213. In some embodiments, the axis of the aforementioned third axis core hole 213 can be perpendicular to the aforementioned first direction.
[0057] In some embodiments, the angle between the first axis of the movable rod 30 when it is in the first position and the second axis of the movable rod 30 when it is in the second position is 90 degrees, and the second axis is perpendicular to the first direction.
[0058] In some embodiments, the movable rod 30 may be provided with a flame arrester, a breathing valve, and a vent pipe connecting the flame arrester, breathing valve, and foldable vent valve. The breathing valve is a valve that both isolates the oil storage tank from the atmosphere within a certain pressure range and allows it to be connected to the atmosphere when the pressure exceeds or falls below this range. Its function is to prevent damage to the oil storage tank due to overpressure or vacuum, while also reducing evaporation losses of liquid oil. The flame arrester may be a safety device used to prevent the spread of flames of flammable gases or liquids and to prevent explosions caused by backfire.
[0059] In some embodiments, when the shaft core 20 is in the first position, fluid can flow through the first through-hole into the movable rod 30, and then through the vent pipe into the flame arrester and the breathing valve, allowing the device to operate normally. When the shaft core 20 rotates about its axis to the second position, the flame arrester, breathing valve, and vent pipe on the movable rod 30 can also rotate about its axis to the second position, and the foldable vent valve can be disconnected.
[0060] In some embodiments, the first axis may be a line along which the axis of symmetry perpendicular to the cross section lies when the movable rod 30 is in the first position, and the second axis may be a line along which the axis of symmetry perpendicular to the cross section lies when the movable rod 30 is in the second position. The angle between the first and second axes may be 90 degrees, the first axis may be parallel to the first direction, and the second axis may be parallel to the third direction.
[0061] Through the above arrangement, when the movable rod 30 and the vent pipe, flame arrester, and breathing valve connected thereto are in the first position, the vent pipe can be perpendicular to the ground, thereby preventing lateral forces from causing instability. When the movable rod 30 and the vent pipe, flame arrester, and breathing valve connected thereto are in the second position, the vent pipe can be parallel to the ground, thereby preventing safety issues caused by contact between the vent pipe and the ground (such as sparks generated by collision with the ground) and also allowing the vent pipe, flame arrester, and breathing valve to be closer to the ground, making them easier to maintain or repair, thereby increasing the safety of equipment maintenance.
[0062] In some embodiments, the foldable vent valve may further include a sealing liner 40 having a first sealing limit groove 41 formed on its side and a first sealing through hole 42 formed in its lower portion parallel to the first direction. The sealing liner 40 is disposed between the shaft core 20 and the housing 10, with the interior of the sealing liner 40 rotatably connected to the exterior of the shaft core 20. The first sealing limit groove 41 overlaps with the U-shaped groove 13 in the first direction, and the first sealing through hole 42 overlaps with the first through hole in the first direction. In some embodiments, the sealing liner 40 is made of polytetrafluoroethylene.
[0063] In some embodiments, the sealing liner 40 may also be configured as a detachably connected first sealing portion 43 and a second sealing portion 44 located above the first sealing portion 43. The first sealing portion 43 may include a second sealing limiting groove 431, and the second sealing portion 44 may include a third sealing limiting groove 441 and a third sealing limiting block 442. In some embodiments, the second sealing limiting groove 431 and the third sealing limiting groove 441 form the first sealing limiting groove 41. The first sealing limiting groove 41 may be arranged opposite to the U-shaped groove 13, that is, when viewed from the first direction, the first sealing limiting groove 41 and the U-shaped groove 13 may overlap.
[0064] In some embodiments, the second sealing portion 44 is provided with a first sealing through-hole, which can be arranged opposite to the first through-hole. In some embodiments, the first sealing portion 43 and the second sealing portion 44 can also be provided with a third sealing stopper 442, respectively. The third sealing stopper 442 can cooperate with the housing to achieve a position limit. For example, the third sealing stopper 442 can be provided as a protrusion along a third direction to prevent the first sealing portion 43 and the second sealing portion 44 from rotating relative to the housing. In some embodiments, the material of the sealing liner 40 can include nitrile rubber, chloroprene rubber, or polytetrafluoroethylene.
[0065] By providing the aforementioned sealing liner 40 , the sealing performance of the foldable vent valve can be enhanced.
[0066] In some embodiments, the aforementioned foldable vent valve may further include a pipe 50 parallel to the first direction, a lower vent pipe and an upper vent pipe; wherein, one end of the pipe 50 is connected to the first through hole; the lower vent pipe is arranged on the lower side of the pipe 50, and is connected to the other end of the pipe 50 through a flange or thread; the upper vent pipe is arranged on the upper side of the movable rod 30, and is connected to the movable rod 30 through a flange or thread.
[0067] In some embodiments, one end of the pipe 50 may be detachably connected to the first through hole, or one end of the pipe 50 may be fixedly connected to the first through hole. Preferably, one end of the pipe 50 may be fixedly connected to the first through hole, for example, by casting the two or welding the pipe 50 and the first through hole together.
[0068] In some embodiments, the other end of the pipe 50 can be connected to the lower vent pipe via a flange. The other end of the pipe 50 can also be threadedly connected to the lower vent pipe. In this case, the interior of the other end of the pipe 50 can be threaded, and the exterior of the lower vent pipe can be threaded. In some embodiments, the movable rod 30 can be connected to the upper vent pipe via a flange. The movable rod 30 can also be threadedly connected to the upper vent pipe. In this case, the interior of the movable rod 30 can be threaded, and the exterior of the upper vent pipe can be threaded.
[0069] Although a plurality of embodiments of the present disclosure have been shown and described herein, it will be apparent to those skilled in the art that such embodiments are provided by way of example only. Those skilled in the art may conceive of many modifications, changes, and alternatives without departing from the ideas and spirit of the present disclosure. It should be understood that in practicing the present disclosure, various alternatives to the embodiments of the present disclosure described herein may be adopted. The appended claims are intended to define the scope of protection of the present disclosure and therefore cover equivalents or alternatives within the scope of these claims.
Claims
1. A foldable vent valve for fluid, characterized in that: The foldable vent valve comprises: a housing (10), a shaft core (20) and a movable rod (30); wherein, An inner cavity is formed inside the housing (10) for accommodating the shaft core (20); A first through hole parallel to the first direction is formed at the lower portion of the housing (10) for circulating the fluid; A U-shaped groove (13) is formed on the side of the housing (10), and the shape of the U-shaped groove (13) matches the cross section of the movable rod (30) and is used to limit the position of the movable rod (30); The shaft core (20) is arranged in the inner cavity, and the side shape of the shaft core (20) matches the side shape of the inner cavity; The shaft core (20) is formed with a second through hole (21) parallel to the first direction, and a first end of the second through hole (21) is connected to a first end of the movable rod (30); The side of the shaft core (20) is rotatably connected to the inner side of the housing (10), and the shaft core (20) can rotate around the axis of symmetry of the shaft core (20) in the axial direction, so that the shaft core (20) and the movable rod (30) can rotate between a first position and a second position; wherein, When the shaft core (20) and the movable rod (30) are located at a first position, the first through hole and the second through hole (21) are in communication, and the fluid can flow through the movable rod (30); When the shaft core (20) and the movable rod (30) are located at the second position, the first through hole and the second through hole (21) are isolated, and no fluid flows in the movable rod (30), which is used to inspect the second end of the movable rod (30).
2. The foldable vent valve according to claim 1, characterized in that: The inner cavity is in the shape of a first cylinder, the shaft core (20) is in the shape of a second cylinder, and the side portion of the first cylinder is rotatably connected to the side portion of the second cylinder.
3. The foldable vent valve according to claim 1, characterized in that: The housing further comprises a first housing (14) and a second housing (15) detachably connected to the first housing (14), wherein an inner cavity is formed between the first housing (14) and the second housing (15); A first through hole is formed at the lower portion of the first shell (14), and a first groove (141) is formed at the side portion of the first shell (14); The second shell (15) is arranged on the upper part of the first shell (14), and a second groove (151) is formed on the side thereof to match the first groove (141), wherein the first groove (141) and the second groove (151) form the U-shaped groove (13).
4. The foldable vent valve according to claim 1, characterized in that: The first end of the second through hole (21) is threadedly connected to the first end of the movable rod (30), wherein the first end of the second through hole (21) is at least partially provided with threads.
5. The foldable vent valve according to claim 1, characterized in that: The second through hole (21) includes a first axial core hole (211) and a second axial core hole (212) connected to the first axial core hole (211); wherein, The axes of the first axial core hole (211) and the second axial core hole (212) are parallel.
6. The foldable vent valve according to claim 5, characterized in that: The second through hole (21) further comprises a third axial core hole (213), one end of the third axial core hole (213) is connected to the first axial core hole (211), and the other end of the third axial core hole (213) is connected to the second axial core hole (212).
7. The foldable vent valve according to claim 1, characterized in that: The angle between the first axis when the movable rod (30) is in the first position and the second axis when the movable rod (30) is in the second position is 90 degrees, and the second axis is perpendicular to the first direction.
8. The foldable vent valve according to claim 1, characterized in that: The foldable vent valve further comprises a sealing liner (40), a side portion of the sealing liner (40) is formed with a first sealing limit groove (41), and a lower portion of the sealing liner (40) is formed with a first sealing through hole (42) parallel to the first direction; wherein, The sealing liner (40) is disposed between the shaft core (20) and the housing (10), and the interior of the sealing liner (40) is rotatably connected to the exterior of the shaft core (20); The first sealing limiting groove (41) overlaps with the U-shaped groove (13) in a first direction; The first sealing through hole (42) coincides with the first through hole from a first direction.
9. The foldable vent valve according to claim 8, characterized in that: The sealing liner (40) is made of polytetrafluoroethylene.
10. The foldable vent valve according to claim 1, characterized in that: It also includes a pipeline (50) parallel to the first direction, a lower ventilation pipe and an upper ventilation pipe; wherein, One end of the pipe (50) is connected to the first through hole; The lower vent pipe is arranged on the lower side of the pipeline (50) and is connected to the other end of the pipeline (50) through a flange or a thread; The upper ventilation pipe is arranged on the upper side of the movable rod (30) and is connected to the movable rod (30) via a flange or a thread.