High-pressure-resistant air inlet valve with pressure-regulating safety relief function

Abstract

The utility model provides a high pressure resistant air inlet valve with pressure regulating safety deflation function, outside is equipped with air inlet valve shell, the bottom of air inlet valve shell includes the clearance that can make gas exchange, the air inlet valve includes air inlet valve main part and sealing piston main part, the elastic body between sealing piston main part and air inlet valve main part, the top of air inlet valve includes rotary lid. Air inlet valve main part and air inlet valve shell are tightly screwed in the opening of the product that needs to be inflated, and air inlet valve main part includes exhaust hole, sealing piston main part is movably connected with air inlet valve main part, and rotary lid is above air inlet valve main part and can rotate. When rotary lid rotates to the root, rotary lid rotation makes exhaust hole unseal, and simultaneously drives the side of air inlet valve main part and sealing piston main part to separate, at this moment, gas can enter exhaust hole from the clearance of air inlet valve shell and exchange.

Description

Technical Field

[0001] This application relates to the field of intake valves, and in particular to a high-pressure resistant intake valve with pressure regulating and safety venting function. Background Technology

[0002] Currently, most high-pressure air inlet valves on the market require opening the dust cap, manually squeezing the sealing piston, and then using a specific structure to press it to a certain position or rotate it to fix the sealing piston in place before releasing air. This process requires considerable external force to push the exposed part of the sealing piston, which can easily damage the product and injure fingers, posing a safety hazard.

[0003] Furthermore, the existing intake valve requires significant external force to push the exposed portion of the sealing piston. After pushing the sealing piston, it must be fixed in a certain position to complete the venting. After venting, many customers forget to return the sealing piston to its original position, causing foreign objects to enter the piston and leading to product failure, or causing the first inflation attempt to fail because the valve is in a vented state. This is also detrimental to practical use.

[0004] Meanwhile, common high-pressure air intake valves on the market may also cause accidents such as explosions due to excessive internal gas pressure during use. Summary of the Invention

[0005] The purpose of this invention is to provide a high-pressure resistant air inlet valve that can automatically return to its original position, can be directly sealed, and has high safety performance.

[0006] The embodiments of the present invention can be implemented through the following technical solutions:

[0007] A high-pressure resistant inlet valve with pressure regulation and safety venting function has an inlet valve housing on the outside, and the bottom of the inlet valve housing includes a gap that allows gas exchange.

[0008] The intake valve includes an intake valve body and a sealing piston body, with an elastic body between the sealing piston body and the intake valve body, and a rotating cover on the top of the intake valve.

[0009] The air intake valve body and the air intake valve housing are threaded together at the opening of the product to be inflated. The air intake valve body includes an exhaust hole. The sealing piston body is movably connected to the air intake valve body. The rotating cover is located above the air intake valve body and is rotatable.

[0010] When the rotating cover rotates to the root, the rotation of the rotating cover causes the exhaust port to be unsealed, and at the same time, it causes the side of the intake valve body to separate from the sealing piston body. At this time, gas can enter the exhaust port from the gap of the intake valve housing for exchange.

[0011] Furthermore, the intake valve includes a second sealing ring located between the sealing piston body and the intake valve housing; the sealing piston body includes a lower piston base and an upper piston base, and a groove for accommodating the second sealing ring is included between the upper piston base and the lower piston base, and the second sealing ring is accommodated between the groove of the sealing piston body and the intake valve housing.

[0012] Furthermore, the rotating cover includes a rotating part, the rotating part includes a rotating clearance, the rotating part includes a rotating ramp, the intake valve body includes a body connecting part, and the sealing piston body includes a piston ramp; after assembly, the rotating clearance is located at the body connecting part; the piston ramp and the rotating ramp will contact each other when the rotating cover rotates to a certain angle.

[0013] Furthermore, the rotating cover includes a rotating part, which includes a rotating limiting part and a rotating bottom. The sealing piston body includes a piston upper base, which includes a raised top and a bottom gap. When sealing, the rotating bottom is located at the bottom gap, and the rotating limiting part is located on the upper side of the raised top.

[0014] Furthermore, the intake valve body includes a piston limiting part, and the piston limiting part includes a limiting pin; the sealing piston body includes a piston connecting rod, and the piston connecting rod includes a connecting rod groove; the connecting rod groove cooperates with the limiting pin and extends into the limiting pin, so that the sealing piston body can only move in the up and down direction under the limiting action of the limiting pin.

[0015] Furthermore, the sealing piston body includes the piston connecting rod, and the piston connecting rod includes a connecting rod top; the elastic body is located between the connecting rod top and the piston limiting part, and the elastic body always has natural tension, so that the connecting rod top always has a force away from the piston limiting part.

[0016] Furthermore, an intake valve body is connected inside the intake valve housing. The intake valve body includes a safety valve groove, and the intake valve also includes a safety exhaust cover, a compression spring, and a safety sealing device. The safety exhaust cover, the compression spring, and the safety sealing device are housed within the safety valve groove.

[0017] Furthermore, the safety valve groove includes a plurality of safety valve slots, each of which includes a locking portion; a safety vent portion is included between two adjacent locking portions; and the safety sealing device further includes a sealing protrusion housed within the safety vent portion.

[0018] Furthermore, an anti-detachment cap limiting hole is included between two adjacent locking parts, and the safety sealing device also includes a connecting post and an anti-detachment cap. The anti-detachment cap is located at the top of the connecting post, and the connecting post is located within the anti-detachment cap limiting hole and can move within the anti-detachment cap limiting hole.

[0019] Furthermore, the safety sealing device includes a spring receiving groove for accommodating the spring; the top of the spring contacts the safety vent cover, and the bottom of the spring is accommodated in the spring receiving groove and the locking portion. Under natural tension, the spring always exerts a force that keeps the safety sealing device and the safety vent cover away from each other.

[0020] The high-pressure resistant intake valve with pressure regulating and safety venting function provided in this embodiment of the invention has at least the following beneficial effects:

[0021] The high-pressure resistant air inlet valve with pressure regulation and safety venting function described in this application has an internal piston that automatically returns to its initial position when the rotating cover is rotated back to the sealing position or the rotating cover is reopened for inflation. This allows for direct sealing or ensures the effectiveness of direct inflation, making it convenient to use.

[0022] The high-pressure resistant intake valve with pressure regulation and safety venting function described in this application features a rotating cover that, during the venting position, releases the seal from the exhaust port, simultaneously causing the side of the intake valve body to separate from the sealing piston body, thus completing the venting function. Furthermore, the cover does not need to detach during venting, offering high convenience.

[0023] The high-pressure resistant air inlet valve with pressure regulation and safety venting function described in this application has a rotating cover that can completely seal the exhaust port to achieve a dustproof effect.

[0024] The high-pressure resistant inlet valve with pressure regulation and safety venting function described in this application, when the internal gas pressure is too high, the gas pressure on the sealing protrusion exceeds the pressure provided by the compression spring, causing the safety sealing device to loosen and thus venting gas, reducing the risk of explosion. When the internal gas pressure decreases, the gas pressure on the sealing protrusion is less than the pressure provided by the compression spring, allowing the safety sealing device to be re-pressed by the compression spring.

[0025] This application describes a high-pressure resistant intake valve with a pressure-regulating safety venting function. The safety vent cap is threaded, and by engaging with the corresponding thread on the intake valve body, tightening or loosening the safety vent cap causes a change in the compression of the pressure spring, thereby adjusting the pressure of the spring on the safety sealing device. This achieves an increase or decrease in the internal protective air pressure. The safety vent cap sealing ring provides resistance to prevent the safety vent cap from loosening. Attached Figure Description

[0026] Figure 1This is a schematic diagram showing the operation of the safety venting function of a high-pressure resistant intake valve with pressure regulating and safety venting function in the sealed state, as described in this invention.

[0027] Figure 2 for Figure 1 A schematic diagram of a cross-section taken along line AA;

[0028] Figure 3 This is a schematic diagram of the venting state of a high-pressure resistant intake valve with pressure regulating and safety venting function according to the present invention.

[0029] Figure 4 for Figure 2 A schematic diagram of a cross-section taken along line BB;

[0030] Figure 5 This is a top view of the rotating cover of a high-pressure resistant intake valve with pressure regulating and safety venting function according to the present invention.

[0031] Figure 6 This is a side view of the rotating cover of a high-pressure resistant intake valve with pressure regulating and safety venting function according to the present invention.

[0032] Figure 7 This is a schematic diagram of the main body of a high-pressure resistant intake valve with pressure regulating and safety venting function according to the present invention.

[0033] Figure 8 for Figure 7 A schematic diagram of a cross-section taken along line CC;

[0034] Figure 9 This is a schematic diagram of the sealing piston body of a high-pressure resistant intake valve with pressure regulating and safety venting function according to the present invention;

[0035] Figure 10 This is a schematic cross-sectional view of the sealing piston body of a high-pressure resistant intake valve with pressure regulating and safety venting function according to the present invention.

[0036] Figure 11 This is a schematic diagram of the safety sealing device structure of a high-pressure resistant intake valve with pressure regulating and safety venting function according to the present invention.

[0037] Figure 12 This is a schematic diagram of the intake valve housing structure of a high-pressure intake valve with pressure regulation and safety venting function according to the present invention.

[0038] Numbers in the diagram

[0039] Rotating cover 1, holding part 11, sealing part 12, rotating part 13, rotating clearance 131, rotating ramp 132, rotating bottom 133, rotating limiting part 134, rotating connecting part 135, rotating gap 136.

[0040] 2. First sealing ring; 3. Elastomer; 4. Intake valve body; 4. Upper surface; 41. Receiving area; 411. Body connecting part; 42. Exhaust port; 43. Piston limiting part; 44. Limiting pin; 441. Limiting hole; 442. External thread; 45. Safety valve groove; 46. Safety valve retaining groove; 47. Retaining part; 471. Safety venting part; 481. Anti-detachment cover limiting hole; 482.

[0041] 5. Second sealing ring; 6. Sealing piston body; 61. Upper piston base; 611. Raised top; 612. Piston ramp; 613. Bottom clearance; 62. Piston connecting rod; 621. Connecting rod groove; 622. Connecting rod top; 63. Lower piston base; 631. Groove.

[0042] 7. Intake valve housing, 71. Internal thread, 72. Orifice, 81. Safety exhaust cover, 811. Vent hole, 82. Safety exhaust cover sealing ring, 83. Compression spring, 84. Safety sealing device, 841. Compression spring receiving groove, 842. Sealing protrusion, 843. Anti-detachment cover, 844. Connecting post. Detailed Implementation

[0043] The present invention will now be further described based on preferred embodiments and with reference to the accompanying drawings.

[0044] Furthermore, for ease of understanding, various components on the drawings have been enlarged (thickened) or reduced (thinned), but this is not intended to limit the scope of protection of this invention.

[0045] Singular forms of words also include plural meanings, and vice versa.

[0046] In the description of the embodiments of this invention, it should be noted that if terms such as "upper," "lower," "inner," or "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use, they are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, in the description of this invention, the terms "first," "second," etc., are used to distinguish different units, but these are not limited by the manufacturing order, nor should they be construed as indicating or implying relative importance. Their names may differ in the detailed description of the invention and the claims.

[0047] The vocabulary used in this specification is for illustrative purposes and is not intended to limit the invention. It should also be noted that, unless otherwise explicitly stated and limited, the terms "set," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, a direct connection, or an indirect connection via an intermediate medium; or they can refer to the internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms within the context of this invention.

[0048] Example 1

[0049] Figure 1 This is a schematic diagram showing the operation of the safety venting function of a high-pressure resistant intake valve with pressure regulating and safety venting function in the sealed state, as described in this invention. Figure 5 This is a top view of the rotating cover of a high-pressure resistant intake valve with pressure regulating and safety venting function according to the present invention. Figure 6 This is a side view of the rotating cover of a high-pressure resistant intake valve with pressure regulating and safety venting function according to the present invention. Figure 7 This is a schematic diagram of the main body of a high-pressure resistant intake valve with pressure regulating and safety venting function according to the present invention. Figure 8 for Figure 7 A schematic diagram of a cross-section taken along line CC;

[0050] Figure 9 This is a schematic diagram of the sealing piston body of a high-pressure resistant intake valve with pressure regulating and safety venting function according to the present invention; Figure 10 This is a schematic cross-sectional view of the sealing piston body of a high-pressure resistant intake valve with pressure regulating and safety venting function according to the present invention. Figure 12 This is a schematic diagram of the intake valve housing structure of a high-pressure resistant intake valve with pressure regulating and safety venting function according to the present invention. Please refer to it. Figure 1 , Figures 5-10 , Figure 12 The high-pressure resistant inlet valve with pressure regulation and safety venting function described in this application has an inlet valve housing 7 on the outside, the bottom of the inlet valve housing 7 includes a gap that allows gas exchange, the inside includes an inlet valve body 4 and a sealing piston body 6, and the top includes a rotating cover 1. The inlet valve body 4 and the inlet valve housing 7 are threadedly fastened to the opening of the product to be inflated. The inlet valve body 4 includes an exhaust port 43. The sealing piston body 6 is movably connected to the inlet valve body 4. The rotating cover 1 is located above the inlet valve body 4 and can rotate. When the rotating cover 1 rotates, the exhaust port 43 is unsealed, allowing gas flow.

[0051] A high-pressure resistant intake valve with pressure regulation and safety venting function further includes a first sealing ring 2 located between the rotating cover 1 and the intake valve body 4, and a second sealing ring 5 located between the sealing piston body 6 and the intake valve housing 7. The first sealing ring 2 and the second sealing ring 5 seal the internal parts of the intake valve to prevent venting.

[0052] A high-pressure resistant intake valve with pressure regulation and safety venting function also includes an elastic body 3 located between the sealing piston body 6 and the intake valve body 4. The natural tension of the elastic body 3 ensures that there is always a force between the sealing piston body 6 and the intake valve body 4 that keeps them away from each other.

[0053] Please refer to Figures 1-6 The rotating cover 1 includes a handle 11 for the user to hold and rotate, a sealing part 12 for accommodating the first sealing ring 2, and a rotating part 13 for connection and limitation with the air intake valve body 4.

[0054] Specifically, the sealing part 12 is used to accommodate the first sealing ring 2.

[0055] Specifically, the rotating part 13 includes a rotating clearance 131, which is located in the middle of the rotating part 13. In this embodiment, the rotating clearance 13 is used to connect with the intake valve body 4 to achieve the positioning function of the rotating part 13 and prevent the rotating part 13 from falling off at will.

[0056] In this embodiment, there are two rotating clearances 131, and the two rotating clearances 131 are connected by a rotating connecting part 135 and a rotating part 13.

[0057] Specifically, the rotating part 13 is also provided with a rotating limiting part 134 and a rotating bottom 133. The rotating limiting part 134 and the rotating bottom 133 are connected by a rotating ramp 132, and the rotating ramp 132 and the rotating bottom 133 are in contact with the sealing piston body 6.

[0058] In this embodiment, the preferred option is that the rotating ramp 132 has a smooth, convex shape.

[0059] Specifically, the rotating part 13 also includes a rotating gap 136, which is located between the rotating limiting part 134 and the rotating limiting part 134, so that the rotating cover 1 and the intake valve body 1 can be detachably connected. At the same time, the rotating gap 136 also causes the rotating cover 1 to rotate horizontally under the limiting of the intake valve body 1.

[0060] Please refer to Figure 1 , Figure 6 and Figure 7The intake valve body 4 includes an exposed upper surface 41, and the upper surface 41 includes a receiving portion 411 for accommodating the first sealing ring 2. After assembly, the holding portion 11 is located above the receiving portion 411, the sealing portion 12 is accommodated in the receiving portion 411 through the first sealing ring 2, and the rotating portion 13 is also accommodated in the receiving portion 411.

[0061] The intake valve body 4 also includes a body connecting part 42 and a piston limiting part 44.

[0062] Specifically, the piston limiting part 44 is connected to the main body connecting part 42 and the intake valve body 4 on both sides. After assembly, the rotating clearance 131 is located at the main body connecting part 42, so that the rotating cover 1 can rotate.

[0063] Specifically, the piston limiting part 44 is used to accommodate the sealing piston body 6. The piston limiting part 44 includes a limiting hole 442 for accommodating the sealing piston limiting part 6, and also includes a limiting pin 441 for limiting the rotation of the sealing piston limiting part 6.

[0064] The outer side of the intake valve body 4 includes an external thread 45 that is adapted to the intake valve housing.

[0065] Please refer to Figure 1 , Figure 8 and Figure 9 The sealing piston body 6 extends through the entire intake valve. The sealing piston body 6 includes a lower piston base 63 that contacts the intake valve housing 7 at its lowest point. The upper side of the lower piston base 63 includes an upper piston base 61. A groove 631 for accommodating a second sealing ring 5 is provided between the upper piston base 61 and the lower piston base 63. The second sealing ring 5 is accommodated between the groove 631 of the sealing piston body 6 and the intake valve housing 7.

[0066] Specifically, the piston upper base 61 includes a piston ramp 612, which contacts the rotating ramp 132. The piston upper base 61 also includes a raised top 611 and a bottom gap 613. In the initial state, the rotating bottom 133 is located at the bottom gap 613, and the rotating limiting part 134 is located on the upper side of the raised top 611.

[0067] The sealed piston body 6 also includes a piston connecting rod 62, which is housed within the piston limiting portion 44. The piston connecting rod 62 includes a connecting rod top 622 and a connecting rod groove 621.

[0068] Specifically, the connecting rod groove 621 cooperates with the limiting pin 441 and extends into the limiting pin 441, so that the sealing piston body 6 can only move in the up and down direction under the limiting action of the limiting pin 441.

[0069] Specifically, the connecting rod top 622 is located at the top of the piston connecting rod 62 and has a diameter larger than the piston connecting rod 62 body. After assembly, the elastic body 3 is located between the connecting rod top 622 and the piston limiting part 44. The elastic body 3 always has natural tension, so that the connecting rod top 622 always has a force away from the piston limiting part 44.

[0070] Please refer to Figure 1 The intake valve housing 7 includes an internal thread 71 that is adapted to the external thread 45 of the intake valve body 4. The internal thread 71 and the external thread 45 are adapted to each other so that the intake valve housing 7 and the intake valve body 4 are locked together at the opening of the product to be inflated.

[0071] The bottom of the intake valve housing 7 is also provided with several holes 72, so that gas can flow from inside the intake valve housing 7.

[0072] Figure 2 for Figure 1 A schematic diagram of a cross-section taken along line AA; Figure 3 This is a schematic diagram of the venting state of a high-pressure resistant intake valve with pressure regulating and safety venting function according to the present invention. Figure 4 for Figure 2 A cross-sectional view taken along line BB; please refer to the diagram. Figures 1-4 The following is a brief description of the use of the intake valve in this embodiment, in conjunction with the aforementioned accompanying drawings.

[0073] like Figures 1-2 As shown, the intake valve is in a sealed state.

[0074] At this time, the rotating cover 1 completely seals the exhaust port 43, the rotating bottom 133 is located at the bottom gap 613, the rotating ramp 132 and the piston ramp 612 are in contact, the rotating limiting part 134 and the protruding top 611 are in contact, and the tension of the elastic body 3 makes the sealing piston body 6 and the second sealing ring 5 tightly combined with the intake valve body 4, so that the gas cannot communicate with the outside through the hole 72 on the intake valve housing 7.

[0075] like Figures 3-4 As shown, the intake valve is in the venting state.

[0076] At this time, the rotating cap 1 is in a separable state. The rotating cap 1 does not cover the exhaust port 43, and the exhaust port 43 can exchange gas with the outside.

[0077] The elastomer 3 is compressed by the rotating cover 1, and the rotating bottom 133 is located at the protruding top 611. The entire body of the sealed piston body 6 moves downward. There is a gap between the sealed piston body 6 and the second sealing ring 5 and the intake valve body 4. Gas can enter the exhaust port 43 and communicate with the outside through the gap between the sealed piston body 6 and the second sealing ring 5 and the intake valve body 4 through the hole 72 on the intake valve housing 7.

[0078] When the intake valve needs to be inflated, the rotating cover 1 is removed as a whole. At this time, the tension of the elastic body 3 causes the sealing piston body 6 and the second sealing ring 5 to be tightly combined with the intake valve body 4.

[0079] The structure of the inflation device is similar to that of the rotating cover 1. The inflation device is placed inside the air inlet valve body 4, and the inflation device presses the sealing piston body 6 downward to inflate it.

[0080] When inflation is complete, the inflation device is rotated out, and the tension of the elastic body 3 once again makes the sealing piston body 6 and the second sealing ring 5 tightly bond with the air intake valve body 4, preventing gas from escaping.

[0081] Example 2

[0082] The high-pressure resistant intake valve with pressure regulation and safety venting function described in this embodiment has the same basic structure, working process, and technical effect as the high-pressure resistant intake valve provided in the first embodiment, except that:

[0083] Figure 11 This is a schematic diagram of the safety sealing device structure of a high-pressure resistant intake valve with pressure regulating and safety venting function according to the present invention. Please refer to it. Figures 1 to 11 The intake valve body 4 includes an upper surface 41 located at the top layer. A safety valve groove 46 is provided between the upper surface 41 and the edge of the intake valve body 4. The safety valve groove 46 includes a plurality of safety valve slots 47. Each safety valve slot 47 includes a locking part 471. A safety vent 481 and an anti-detachment cap limiting hole 482 may be provided between two adjacent locking parts 471.

[0084] The intake valve described in this embodiment includes a safety exhaust cover 81, which is housed within the safety valve groove 46.

[0085] Specifically, the top of the safety vent cover 81 includes several vent holes 811.

[0086] The safety vent cover 81 and the safety valve groove 46 are fixedly connected. The side of the safety vent cover 81 and the safety valve groove 46 that are in contact is provided with threads. Correspondingly, the side of the safety valve groove 46 that is in contact with the safety vent cover 81 is also provided with threads. The safety vent cover 81 and the safety valve groove 46 are connected by threads.

[0087] The intake valve also includes a safety exhaust cover sealing ring 82, which is located on one side of the safety exhaust cover 81 and is used to seal the safety exhaust cover 81 and the safety valve groove 46.

[0088] Specifically, the safety vent cover sealing ring 82 is located on the other side of the thread of the safety vent cover 81.

[0089] The intake valve also includes a compression spring 83 and a safety sealing device 84, which are located inside the space formed by the safety valve recess 46 and the safety exhaust cover 81. Specifically, the safety sealing device 84 is arc-shaped and matches the shape of the safety valve slot 47. The safety sealing device 84 is located between two adjacent safety valve slots 47.

[0090] Specifically, the safety sealing device 84 includes a spring receiving groove 841 for receiving the spring 83.

[0091] Specifically, the safety sealing device 84 also includes a sealing protrusion 842 housed within the safety vent 481. When the sealing protrusion 842 is housed within the safety vent 481, the safety vent 481 is sealed by the sealing protrusion 842.

[0092] Specifically, the safety sealing device 84 also includes a connecting post 844 and an anti-detachment cover 843. The anti-detachment cover 843 is located on top of the connecting post 844, and the connecting post 844 is located within the anti-detachment cover limiting hole 482 and can move within the anti-detachment cover limiting hole 482.

[0093] Preferably, the diameter of the anti-detachment cover 843 is larger than that of the connecting post 844 and the anti-detachment cover limiting hole 482. Therefore, when the connecting post 844 moves within the anti-detachment cover limiting hole 482, the anti-detachment cover 843 can prevent the safety sealing device 84 from coming off.

[0094] Preferably, the anti-detachment cap 843 is cap-shaped with a pointed top, making it easy for the anti-detachment cap 843 to pass through the anti-detachment cap limiting hole 482.

[0095] Preferably, in this embodiment, there are three safety sealing devices 84, and the three safety sealing devices 84 are evenly distributed within the safety valve groove 46 to facilitate uniform force distribution. Of course, the number of safety sealing devices 84 can also be adjusted as needed.

[0096] Specifically, the top of the compression spring 83 contacts the safety vent cover 81, and the bottom is housed in the compression spring receiving groove 841 and the locking part 471, so that under the action of natural tension, the compression spring 83 always has a force that keeps the safety sealing device 84 and the safety vent cover 81 away from each other, so the safety venting part 481 and the anti-detachment cover limiting hole 482 are sealed and will not allow air to pass through.

[0097] The safety vent cap 81 is threaded and engages with the corresponding thread on the intake valve body 4. Tightening or loosening the safety vent cap 81 causes a change in the compression of the pressure spring 83, thereby adjusting the pressure of the pressure spring 83 on the safety sealing device 84. This increases or decreases the internal protective air pressure. The safety vent cap sealing ring 82 provides resistance to prevent the safety vent cap from loosening.

[0098] Please refer to Figures 1-4 The working principle of this application will be briefly explained below with reference to the accompanying drawings.

[0099] When the intake valve is in the deflation state, the internal air pressure and external air pressure of the main body connected to the intake valve are close. At this time, the natural tension of the compression spring 83 will press the safety sealing device 84 tightly, and the safety vent 481 and the anti-detachment cover limit hole 47 will not leak air.

[0100] When the gas inside the intake valve is in a sealed state, if there is an excessive pressure difference between the internal and external air pressures of the main body connected to the intake valve, the internal pressure will be too high and will compress the spring 83, causing the safety sealing device 84 to be lifted. Gas can then pass through the safety vent 481 and the anti-detachment cover limiting hole 47. The gas will then be discharged to the outside through the vent hole 811 of the safety exhaust cover 81 after passing through the safety vent 481 and the anti-detachment cover limiting hole 47.

[0101] When the internal pressure decreases, the natural tension of the compression spring 83 can press the safety sealing device 84 back to the state where the safety vent 481 and the anti-detachment cap limiting hole 47 are blocked. The safety sealing device 84 is then pressed tight again, and the gas will not leak out through the safety vent 481 and the anti-detachment cap limiting hole 47.

[0102] When the inflation device inflates the main body connected to the air inlet valve, if the inflation device over-inflates the main body connected to the air inlet valve, the internal pressure of the main body will be too high. The internal air pressure will compress the spring 83, and the safety sealing device 84 will be lifted. Gas can pass through the safety vent 481 and the anti-detachment cover limiting hole 47. When the gas passes through the safety vent 481 and the anti-detachment cover limiting hole 47 and is discharged to the outside through the vent hole 811 of the safety exhaust cover 81, it prevents accidents caused by over-inflation.

[0103] The specific embodiments of the present invention have been described in detail above. For those skilled in the art, several improvements and modifications can be made to the present invention without departing from the principle of the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims

1. A high-pressure resistant intake valve with pressure regulating and safety venting function, comprising an intake valve housing on the outside, the bottom of the intake valve housing including a gap for gas exchange, characterized in that: The intake valve includes an intake valve body and a sealing piston body, with an elastic body between the sealing piston body and the intake valve body, and the top of the intake valve includes a rotating cover. The air intake valve body and the air intake valve housing are threaded together at the opening of the product to be inflated. The air intake valve body includes an exhaust hole. The sealing piston body is movably connected to the air intake valve body. The rotating cover is located above the air intake valve body and can rotate. When the rotating cover rotates to the root, the rotation of the rotating cover causes the exhaust port to be unsealed, and at the same time, it causes the side of the intake valve body to separate from the sealing piston body. At this time, gas can enter the exhaust port from the gap of the intake valve housing for exchange. An intake valve body is connected inside the intake valve housing, and the intake valve body includes a safety valve recess. The intake valve also includes a safety exhaust cap, a compression spring, and a safety sealing device; The safety vent cover, the compression spring, and the safety sealing device are housed within the safety valve recess.

2. The high-pressure resistant inlet valve with pressure regulating and safety venting function according to claim 1, characterized in that: The intake valve includes a second sealing ring located between the sealing piston body and the intake valve body; The sealing piston body includes a lower piston base and an upper piston base, and a groove for accommodating the second sealing ring is included between the upper piston base and the lower piston base. The second sealing ring is accommodated between the groove of the sealing piston body and the intake valve housing.

3. The high pressure resistant inlet valve with pressure regulating and safety relief function according to claim 1, characterized in that: The rotating cover includes a rotating part, the rotating part includes a rotating clearance, and the rotating part includes a rotating ramp. The intake valve body includes a body connecting part, and the sealing piston body includes a piston ramp; After assembly, the rotating clearance is located at the main body connection part; the piston ramp and the rotating ramp will come into contact when the rotating cover rotates to a certain angle.

4. A high-pressure resistant inlet valve with pressure regulating and safety venting function according to claim 1, characterized in that: The rotating cover includes a rotating part, which includes a rotating limiting part and a rotating bottom. The sealed piston body includes an upper piston base, which includes a raised top and a bottom gap. When sealed, the rotating bottom is located in the bottom gap, and the rotating limiting part is located on the upper side of the top of the protrusion.

5. A high-pressure resistant inlet valve with pressure regulating and safety venting function according to claim 1, characterized in that: The intake valve body includes a piston limiting part, and the piston limiting part includes a limiting pin; The sealed piston body includes a piston connecting rod, and the piston connecting rod includes a connecting rod groove; The connecting rod groove engages with the limiting pin and extends into the limiting pin, so that the sealing piston body can only move in the up and down direction under the limiting action of the limiting pin.

6. A high-pressure resistant inlet valve with pressure regulating and safety venting function according to claim 1, characterized in that: The sealed piston body includes a piston connecting rod, and the piston connecting rod includes a connecting rod top; The elastic body is located between the top of the connecting rod and the piston limiting part. The elastic body always has natural tension, so that the top of the connecting rod always has a force away from the piston limiting part.

7. A high-pressure resistant inlet valve with pressure regulating and safety venting function according to claim 1, characterized in that: The interior of the safety valve groove includes a plurality of safety valve slots, and each safety valve slot includes a locking part; A safety vent is provided between two adjacent locking portions; the safety sealing device also includes a sealing protrusion housed within the safety vent.

8. A high-pressure resistant inlet valve with pressure regulating and safety venting function according to claim 7, characterized in that: An anti-detachment cap limiting hole is included between two adjacent locking parts. The safety sealing device further includes a connecting post and an anti-detachment cover. The anti-detachment cover is located at the top of the connecting post, and the connecting post is located within the anti-detachment cover limiting hole and can move within the anti-detachment cover limiting hole.

9. A high-pressure resistant inlet valve with pressure regulating and safety venting function according to claim 8, characterized in that: The safety sealing device includes a spring receiving groove for accommodating the spring; The top of the compression spring contacts the safety vent cover, and the bottom of the compression spring is housed in the compression spring receiving groove and the locking part. Under natural tension, the compression spring always exerts a force that keeps the safety sealing device and the safety vent cover away from each other.

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