Manual air release valve

Abstract

This utility model discloses a manual venting valve, including a valve body. The valve body contains a valve core with a push handle at one end. A return spring is fitted onto the outer wall of the valve core. An external nut is threaded onto the outer wall of the valve body, and a seal is located on one side of the external nut. Several concave grooves are formed on the outer wall of the valve core, each containing an O-ring seal. A U-shaped groove is formed at the distal end of the valve body, containing a pin. A pull handle is located at the other end of the valve core. This manual venting valve employs a purely mechanical design, requiring no electricity. It ensures the reliability and safety of emergency venting in abnormal oxygen chamber conditions. The valve body is made of copper, aluminum alloy, or stainless steel, ensuring corrosion resistance while maintaining aesthetics. The optimized spring seat design and opening area of ​​the valve core allow for precise control of the valve core's opening and closing force through spring elasticity, enabling convenient operation with minimal effort.

Description

Technical Field

[0001] This utility model relates to the field of medical and health care equipment assembly, specifically to a manual venting valve. Background Technology

[0002] The oxygen chamber created an oxygen level of 0.3-0.8 kg / cm³. 2 In the atmospheric environment, when a person is in it, due to the increased pressure, a large amount of oxygen dissolves in the blood, significantly increasing the amount of oxygen dissolved in the blood. This also increases the partial pressure of oxygen in the blood, enhances the oxygen diffusion capacity, and expands the effective diffusion radius of oxygen. When people inhale oxygen in the cabin for treatment and health care, it provides effective and sufficient oxygen to the hypoxic body, increases the oxygen content and oxygen storage in tissues, thereby achieving health care and therapeutic effects.

[0003] However, existing oxygen chambers (especially those with volumes of 2-10 m³) lack reliable emergency venting devices in abnormal situations: electrically powered valves are prone to failure in the event of a power outage; traditional mechanical valves are often inconvenient to operate and have low venting efficiency due to their complex structure, and their insufficient sealing performance easily leads to gas leaks; furthermore, their poor corrosion resistance makes them unsuitable for long-term use in medical environments. In addition, some valves require significant operating force or cannot be locked in a fully open state, failing to meet the safety requirements of "rapid response and continuous venting" in emergencies, and their inconvenience in disassembly and maintenance restricts the practicality and economy of oxygen chamber emergency equipment. Therefore, there is an urgent need to design a manual venting valve to solve these problems. Utility Model Content

[0004] The purpose of this invention is to provide a manual venting valve to address the aforementioned shortcomings in the prior art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A manual venting valve includes a valve housing, a valve core inside the valve housing, a push handle at one end of the valve core, a return spring sleeved on the outer wall of the valve core, an outer nut threaded onto the outer wall of the valve housing, and a sealing element on one side of the outer nut.

[0007] The outer wall of the valve core has several concave grooves, and the valve core O-ring seal is provided in the concave grooves. The valve body has a U-shaped groove at the far end, and a pin is provided inside the U-shaped groove. The other end of the valve core is provided with a pull handle.

[0008] Preferably, the valve housing has a flow guide hole inside, the flow guide hole corresponding to the position of the center opening on the middle ring side and the right side of the valve core, and the flow guide hole is used at least to guide gas discharge.

[0009] Preferably, the push handle and pull handle form a sliding limiting structure with the U-shaped groove of the valve body via a pin.

[0010] Preferably, the spring seat on the left side of the valve core has a boss structure, and the spring is sleeved on the outside of the boss and abuts against the inner wall of the valve body.

[0011] Preferably, the sealing element is located at the connection interface between the valve housing and the oxygen chamber body, and the seal is achieved by tightening with an outer nut.

[0012] Preferably, the push handle and the pull handle are symmetrically distributed on both sides of the valve core, and the two are linked by a pin and the same U-shaped groove to achieve linkage operation.

[0013] In the above technical solution, the manual venting valve provided by this utility model has the following advantages:

[0014] (1) This manual venting valve adopts a purely mechanical structure design, which does not require electric drive. It can ensure the reliability and safety of emergency venting in the case of abnormal oxygen chamber conditions. The valve can be quickly opened by pushing or pulling the handle. With the sliding limit design of the pin and U-shaped groove, the valve can be kept fully open after rotating the handle, so as to achieve continuous and efficient venting and meet the needs of "large gas flow and convenient operation" during emergency venting of oxygen chamber.

[0015] (2) The valve body is made of copper, aluminum alloy or stainless steel, which ensures corrosion resistance while taking into account aesthetics, and is suitable for the hygiene and aesthetic requirements of medical environment; the spring seat design and opening area of ​​valve core are optimized, and the opening and closing force of valve core is precisely controlled by spring force to achieve the convenient operation of "opening with a little force", while the size of the opening on the middle ring side and the right side center ensures the gas flow efficiency in emergency situations. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0017] Figure 1 This is a three-dimensional structural view of an embodiment of the manual venting valve of this utility model.

[0018] Figure 2 A perspective view of the valve core structure provided for an embodiment of the manual venting valve of this utility model.

[0019] Figure 3 A cross-sectional view of the push handle valve housing structure provided for an embodiment of the manual venting valve of this utility model.

[0020] Figure 4 This is a structural schematic diagram of an embodiment of the manual venting valve of this utility model.

[0021] 1. Push handle; 2. Valve core; 3. Return spring; 4. Valve body; 5. Seal; 6. Outer nut; 7. Valve core O-ring seal; 8. Pin; 10. Pull handle. Detailed Implementation

[0022] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0023] like Figure 1-4 As shown, the manual venting valve provided in this embodiment of the present invention includes a valve housing 4, a valve core 2 is disposed inside the valve housing 4, a push handle 1 is disposed at one end of the valve core 2, a return spring 3 is sleeved on the outer wall of the valve core 2, an outer nut 6 is threadedly connected to the outer wall of the valve housing 4, and a sealing element 5 is disposed on one side of the outer nut 6; a plurality of concave grooves are opened on the outer wall of the valve core 2, a valve core O-ring seal 7 is disposed in the concave grooves, a U-shaped groove is opened at the far end of the valve housing 4, a pin 8 is disposed inside the U-shaped groove, and a pull handle 10 is disposed at the other end of the valve core 2.

[0024] In this embodiment, a valve body 4 is included. The valve body 4 serves as the basic frame of the entire valve. Its precise internal structural design provides space and guidance for the movement of the valve core 2. The valve core 2 is nested inside the valve body 4, and a high-efficiency seal is achieved between them through a valve core O-ring seal 7. A push handle 1 is provided at one end of the valve core 2. A return spring 3 is sleeved on the outer wall of the valve core 2. The return spring 3 is sleeved on the outside of a spring seat with a boss structure on the left side of the valve core 2. This boss structure not only provides stable support for the return spring 3 but also limits its movement. The outer diameter of the spring seat boss matches the inner diameter of the valve body 4, ensuring that the return spring 3 remains on a predetermined trajectory during compression and extension. An outer nut 6 is threaded onto the outer wall of the valve body 4, and a sealing element 5 is provided on one side of the outer nut 6.

[0025] When the valve is in normal use, the return spring 3 is compressed, and the elastic force it generates is transmitted to the valve core 2 through the spring seat boss, causing the valve core 2 to press tightly against the inner wall of the valve body 4. At this time, the valve core O-ring seal 7 fully functions, blocking the gas passage and ensuring a stable micro-pressure environment inside the oxygen chamber. This sealing structure design effectively prevents gas leakage inside the oxygen chamber and ensures stable pressure during normal operation of the oxygen chamber.

[0026] The outer wall of the valve core 2 has several concave grooves, and the valve core O-ring seal 7 is installed in the concave grooves. The depth and width of the concave grooves on the outer wall of the valve core 2 are precisely calculated to fit the size of the valve core O-ring seal 7. When the valve core O-ring seal 7 is embedded in the concave groove, it can fit tightly against the inner wall of the valve core 2 and the valve body 4 to form a reliable sealing barrier. The far end of the valve body 4 has a U-shaped groove, and a pin 8 is installed inside the U-shaped groove. The other end of the valve core 2 is provided with a pull handle 10.

[0027] The outer wall of the valve body 4 is connected to the outer nut 6 via threads. The thread pitch, tooth profile, and other parameters are professionally designed to ensure the tightness and sealing of the connection between the outer nut 6 and the valve body 4. The sealing element 5 is located at the connection interface between the valve body 4 and the oxygen chamber body. When the outer nut 6 is tightened, the axial force of the threads presses the sealing element 5 together. Under pressure, the sealing element 5 undergoes elastic deformation, filling the tiny gaps at the connection interface, thereby achieving a reliable seal between the valve body 4 and the oxygen chamber body and preventing gas leakage from the connection point.

[0028] It should be noted that the valve body 4 has a flow guide hole inside, which corresponds to the position of the center opening on the middle ring side and the right side of the valve core 2. The flow guide hole is used to guide the gas discharge. During the movement of the valve core 2, the opening on the middle right side gradually aligns with the flow guide hole inside the valve body 4.

[0029] The flow guide hole inside the valve body 4 is structurally designed to precisely correspond to the position of the center opening on the middle ring side and the right side of the valve core 2, and the diameter and shape of the flow guide hole have been optimized to ensure that the gas can pass through smoothly.

[0030] When the opening of valve core 2 is fully aligned with the guide hole, the gas passage is opened, and the gas in the oxygen chamber is rapidly discharged through the opening of valve core 2 and the guide hole of valve body 4 under the action of pressure difference.

[0031] It should be noted that the push handle 1 and pull handle 10 form a sliding limit structure with the U-shaped groove of the valve body 4 through the pin 8.

[0032] Furthermore, the spring seat on the left side of the valve core 2 has a boss structure, and the return spring 3 is sleeved on the outside of the boss and abuts against the inner wall of the valve body 4.

[0033] Understandably, the seal 5 is located at the connection interface between the valve body 4 and the oxygen chamber body, and the seal is achieved by tightening the outer nut 6.

[0034] Furthermore, the push handle 1 and pull handle 10 are symmetrically distributed on both sides of the valve core 2, and they are linked together by a pin 8 and the same U-shaped groove. The push handle 1 and pull handle 10 are symmetrically distributed on both sides of the valve core 2, and they form a sliding limiting structure with the pin 8 and the U-shaped groove at the far end of the valve body 4. The width of the U-shaped groove is precisely matched with the diameter of the pin 8, which ensures that the pin 8 can slide flexibly in the U-shaped groove, while limiting its radial movement range.

[0035] This design allows the push handle 1 and pull handle 10 to accurately transmit force to the valve core 2 through the pin 8 during operation, while ensuring that the movement direction of the valve core 2 always follows the predetermined trajectory, avoiding deviation or jamming.

[0036] Working steps: 1. When in normal use, the return spring 3 presses the valve core 2 against the housing, and the valve core O-ring seal 7 blocks the gas passage, maintaining a micro-pressure environment in the oxygen chamber;

[0037] 2. In case of emergency venting, push the push handle 1 to overcome the spring force and move the valve core 2 so that the opening on the right side of the middle of the valve core is aligned with the guide hole of the housing and the gas is discharged through the opening.

[0038] 3. After the handle drives the pin 8 out of the U-shaped groove, rotate the handle 90° clockwise so that the pin is locked into the U-shaped groove limit position, the valve remains fully open, and the gas is continuously and rapidly released.

[0039] 4. Rotate the handle counterclockwise to reset the pin to the initial position of the U-shaped groove. The spring reset 3 will push the valve core to reset, thus closing the gas passage.

[0040] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A manual deflation valve comprising a valve housing (4), characterised in that, The valve housing (4) is provided with a valve core (2) inside. One end of the valve core (2) is provided with a push handle (1). A return spring (3) is sleeved on the outer wall of the valve core (2). An outer nut (6) is threaded on the outer wall of the valve housing (4). A sealing element (5) is provided on one side of the outer nut (6). The outer wall of the valve core (2) is provided with several concave grooves, and the valve core O-ring seal (7) is provided in the concave grooves. The valve body (4) is provided with a U-shaped groove at the far end, and a pin (8) is provided inside the U-shaped groove. The other end of the valve core (2) is provided with a pull handle (10).

2. The manual deflation valve of claim 1, wherein, The valve housing (4) has a flow guide hole inside, which corresponds to the position of the center opening on the middle ring side and the right side of the valve core (2). The flow guide hole is used to guide gas discharge.

3. The manual deflation valve of claim 1, wherein, The push handle (1) and pull handle (10) form a sliding limit structure with the U-shaped groove of the valve body (4) through the pin (8).

4. The manual deflation valve of claim 1, wherein, The spring seat on the left side of the valve core (2) has a boss structure, and the reset spring (3) is sleeved on the outside of the boss and abuts against the inner wall of the valve body (4).

5. The manual deflation valve of claim 1, wherein, The sealing element (5) is located at the connection interface between the valve body (4) and the oxygen chamber body, and is sealed by tightening with an outer nut (6).

6. The manual deflation valve of claim 1, wherein, The push handle (1) and pull handle (10) are symmetrically distributed on both sides of the valve core (2), and the two are linked by a pin (8) and the same U-shaped groove.

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