Straight-through manual reversible one-way valve for oxygen

Abstract

The utility model discloses a kind of oxygen straight-through formula hand-operated reversible check valve, including valve body, the both ends of valve body are provided with operating knob, slider, head and spring;Operating knob is connected with the slider thread;Slider is connected with head;Spring is arranged between head and valve body;Rotary operating knob can drive slider to move along the axial direction of valve body, and then drive the head compression or release the spring, to make head and valve body separate or sealing engagement.This scheme is independently controllable by adopting the head and spring structure of symmetrical setting at both ends, and the opening and closing state of head is directly controlled using knob driving slider, so that user can quickly switch the one-way flow direction of gas without disassembling valve;Further achieve the function of two-way controllable check valve while maintaining the advantages of straight-through pipeline layout, its integrated design structure is compact and easy to install, the overall adoption of stainless steel degreasing material ensures its safety and durability in medical oxygen environment.

Description

Technical Field

[0001] This utility model relates to the field of fluid control device technology, and more specifically, to a straight-through manually reversible one-way valve for oxygen. Background Technology

[0002] In the gas pipeline systems of medical oxygen concentrators and other equipment, check valves are crucial components for ensuring unidirectional gas flow and preventing backflow. Existing standard check valves, commonly used in current technology, have a single function, only enabling fixed unidirectional flow. When users need to change the gas flow direction within the pipeline due to process changes or equipment layout adjustments, while still maintaining unidirectional flow, the original check valve must be removed from the pipeline, repositioned, and reinstalled, or replaced with a new check valve with the opposite flow direction. This process is cumbersome, increasing maintenance time and labor costs, and may also introduce the risk of seal failure or contamination during disassembly and reassembly.

[0003] To address this issue, check valves with reversing capabilities have emerged on the market. However, these existing solutions mostly employ elbows or tee structures, which are limited by the inlet and outlet directions during installation, often requiring additional bends or detours in the pipeline, increasing system flow resistance and space occupation, thus failing to meet the requirements of compact design. Other solutions require disassembling the valve body and reversing the direction of internal parts to achieve reversal, which remains complex and fails to achieve quick and convenient switching. Therefore, there is a need to develop a check valve that can be directly installed on straight pipelines and allows for flexible flow direction switching through simple manual operation. Utility Model Content

[0004] In view of the above-mentioned technical problems in related technologies, this utility model proposes a straight-through manual reversible one-way valve for oxygen, which can overcome the above-mentioned shortcomings of the prior art.

[0005] To achieve the above-mentioned technical objectives, the technical solution of this utility model is implemented as follows: A type of direct-flow, manually reversible check valve for oxygen applications; The oxygen-use straight-through manually reversible one-way valve includes a valve body, with an operating knob, a slider, a sealing head, and a spring at both ends of the valve body; the operating knob is threadedly connected to the slider; the slider is connected to the sealing head; the spring is disposed between the sealing head and the valve body; rotating the operating knob can drive the slider to move axially along the valve body, thereby causing the sealing head to compress or release the spring, so as to separate or seal the sealing head from the valve body.

[0006] Furthermore, a sealing ring is provided on the end cap to form a seal with the valve body.

[0007] Furthermore, the valve body has a straight-through structure, with its inlet and outlet located on the same straight line.

[0008] Furthermore, the slider is radially fixed and can only move along the axial direction of the valve body.

[0009] Furthermore, the spring is a compression spring, which normally causes the end cap to press against the valve body.

[0010] Furthermore, the threaded connection between the operating knob and the slider is configured to allow precise adjustment of the axial displacement of the slider by rotating the operating knob.

[0011] Furthermore, the valve body and all components are made of stainless steel and have undergone degreasing treatment.

[0012] Furthermore, the valve body consists of two parts connected by a stainless steel internal threaded top cover and a stainless steel external threaded top cover.

[0013] Furthermore, the slider is fixedly connected to the end cap by an internal hexagonal screw.

[0014] The beneficial effects of this utility model are as follows: By adopting an independently operable end cap and spring structure with symmetrical arrangement at both ends, and using a knob to drive the slider to directly control the opening and closing state of the end cap, users can quickly switch the unidirectional flow direction of gas without disassembling the valve; thus, while maintaining the advantages of the straight-through pipeline layout, it achieves the function of a bidirectional controllable one-way valve. Its integrated design structure is compact and easy to install, and the full use of stainless steel degreased material ensures its safety and durability in medical oxygen environment. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is an exploded view of the overall structure of an oxygen-use straight-through manually reversible one-way valve according to an embodiment of the present utility model; Figure 2 This is a perspective view of the overall structure of an oxygen-use straight-through manually reversible one-way valve according to an embodiment of the present utility model; Figure 3 This is a cross-sectional view of the overall structure of an oxygen-use straight-through manually reversible one-way valve according to an embodiment of the present utility model; Figure 4 This is a partial cross-sectional view of an oxygen-use straight-through manually reversible one-way valve according to an embodiment of the present utility model; Figure 5 This is a partial detail drawing of an oxygen-use straight-through manually reversible one-way valve according to an embodiment of the present utility model; In the diagram: 1. Stainless steel valve body; 2. End cap; 3. Spring; 4. Sealing ring; 5. Slider; 6. Socket head screw; 7. Stainless steel operating knob; 8. Stainless steel internal thread top cover; 9. Stainless steel external thread top cover. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model are within the protection scope of the present utility model.

[0018] It should be understood that in the description of the embodiments of this utility model, the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this utility model 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. Therefore, they should not be construed as limitations on the embodiments of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of the embodiments of this utility model, "several" means two or more, unless otherwise explicitly specified.

[0019] like Figure 1-5 As shown, an oxygen-use straight-through manual reversible one-way valve according to an embodiment of the present invention includes a valve body. Both ends of the valve body 1 are provided with an operating knob 7, a slider 5, a sealing head 2, and a spring 3. The operating knob 7 is threadedly connected to the slider 5. The slider 5 is connected to the sealing head 2. The spring 3 is disposed between the sealing head 2 and the valve body 1. Rotating the operating knob 7 can drive the slider 5 to move axially along the valve body 1, thereby driving the sealing head 2 to compress or release the spring 3, so that the sealing head 2 is separated from or sealed to the valve body (1).

[0020] According to an embodiment of the present invention, a direct-flow manual reversible check valve for oxygen is provided on the end cap 2 in a specific embodiment, for forming a seal with the valve body 1.

[0021] According to an embodiment of the present invention, a straight-through manually reversible one-way valve for oxygen is provided. In a specific embodiment, the valve body 1 has a straight-through structure, with its inlet and outlet located on the same straight line.

[0022] According to an embodiment of the present invention, in a specific embodiment of a straight-through manual reversible check valve for oxygen, the slider 5 is radially fixed and can only move along the axial direction of the valve body 1.

[0023] According to an embodiment of the present invention, a direct-flow manual reversible check valve for oxygen is provided. In a specific embodiment, the spring 3 is a compression spring, which normally causes the end cap 2 to press against the valve body 1.

[0024] According to an embodiment of the present invention, a direct-flow manual reversible check valve for oxygen is provided. In a specific embodiment, the thread of the operating knob 7 cooperating with the slider 5 is configured such that the axial displacement of the slider 5 can be precisely adjusted by rotating the operating knob 7.

[0025] According to an embodiment of the present invention, a direct-flow manual reversible check valve for oxygen is provided. In a specific embodiment, the valve body 1 and all components are made of stainless steel and have undergone degreasing treatment.

[0026] According to an embodiment of the present invention, a direct-flow manual reversible check valve for oxygen is provided. In a specific embodiment, the valve body 1 is composed of two parts, which are connected by a stainless steel internal threaded top cover 8 and a stainless steel external threaded top cover 9.

[0027] According to an embodiment of the present invention, in a specific embodiment of a direct-flow manual reversible one-way valve for oxygen, the slider 5 is fixedly connected to the end cap 2 by an internal hexagon screw 6.

[0028] To facilitate understanding of the above-mentioned technical solutions of this utility model, the following detailed description of the above-mentioned technical solutions of this utility model is provided through specific usage methods.

[0029] In practical use, the oxygen-use straight-through manual reversible check valve according to this utility model includes a valve body, a rotating slider, a sealing head, a spring, an operating knob, and a sealing gasket.

[0030] A reversible check valve, also known as a multi-directional reversible check valve, is a type of valve used to control the unidirectional flow of gas or liquid. By operating a rotary switch, a reversible check valve can control the unidirectional flow of liquid or gas in different directions; that is, the liquid or gas can only flow from one side, while it cannot flow from the other side.

[0031] The significance of a reversible check valve is that if a user wants to change the airflow direction after the check valve has been installed, but still needs to achieve unidirectional flow, this check valve can be installed. The customer can turn the knob switch, which drives the internal slider through the internal thread. The slider slides, causing the end cap to move and compressing the internal spring, thus allowing the airflow to be discharged. The spring at the other end presses the end cap tightly, so the airflow can only enter the check valve after the pressure compresses the spring and cannot flow out in the opposite direction, thus achieving the function of a check valve.

[0032] This reversible check valve allows for air intake and exhaust only via a knob. When the left knob is turned to the open position, the spring is constantly compressed; when the right knob is turned to the closed position, the spring is open. In this state, airflow can only enter from the right and exit from the left, preventing backflow. If the customer wants to reverse the airflow and still achieve the check valve function, the knob needs to be turned to the closed position (left knob) and the open position (right knob). In this state, the left end cap is compressed by the spring and fits against the valve body, allowing air to enter from the left side only. The right end cap is normally open due to the spring compression, allowing air to exit from the right side. This achieves the function of a check valve when the airflow in the pipeline is reversed, protecting the safety and normal operation of the equipment.

[0033] The present invention discloses a straight-through manually reversible check valve for oxygen. The straight-through design does not adhere to the limitations of the installation conditions and pipeline. This check valve can be added in the middle of a straight section of the pipe, and is not constrained by the different directions of the pipeline inlet and outlet.

[0034] Connection method and usage, when oxygen needs to enter from B and exit from A: Step 1: Oxygen enters from port B. Because the right end cap is held in place by a spring, the gas will enter from port B, pushing open the right end cap. Through the gap between the end cap and the valve body, and because the end cap and the valve body are sealed by sealing ring 4, the gas can only enter the round holes around the end cap, and the oxygen enters the valve body.

[0035] Step Two: The left side needs to be rotated. Screw 7 has internal threads, which drive slider 5. Screw 5 is radially fixed by screw 7 and can only move in the A-B direction, not rotate. Therefore, as knob 7 rotates, slider 5 moves towards B, causing end cap 2 to also move towards B, resulting in separation from valve body 1. After separation, the oxygen that entered through port B in Step One can then exit through the small holes around end cap 2. Because end cap 2 has separated from valve body 1, the gas flows out from the gap. Thus, oxygen enters through port B and exits through port A.

[0036] However, if the gas wants to flow back, since the right end cap is opened by a spring, the gas will automatically tighten due to the spring when it flows back, thus realizing the one-way valve function that allows the gas to flow only from B to A.

[0037] The present invention relates to a straight-through manually reversible one-way check valve for oxygen, and the assembly method is as follows: Step 1: First, place the sealing ring 4 inside the valve body 1, then install the slider 5, followed by the end cap 2 and the spring 3. Screw the stainless steel operating knob 7 onto the outside of the slider until it reaches the bottom. Then, insert the screw 6 through the stainless steel threaded top cover 8, end cap 2, and slider 5, and finally tighten it onto the valve body 1 using the threads. This completes half of the check valve assembly. See the diagram below.

[0038] Step 2: Reassemble the other half according to Step 1. At this time, note that the stainless steel internal thread top cover 8 should be replaced with the stainless steel external thread top cover 9. This completes the assembly of the other half.

[0039] Step 3: Connect the two parts from Step 1 and Step 2 together by tightening the internal and external threads of the stainless steel internal threaded top cover 8 and the stainless steel external threaded top cover 9 to complete the assembly of the entire variable direction manual check valve.

[0040] The oxygen-use straight-through manual reversible check valve described in this utility model is made entirely of stainless steel, which is rust-proof and corrosion-resistant.

[0041] All structures are connected by snap-fit ​​and threaded connections. Air pressure guides the end cap, and the end cap compresses the spring to achieve unidirectional airflow. When the airflow reverses, the spring presses the end cap to achieve a one-way valve function.

[0042] Rotating the control knob causes the slider to move via a threaded transmission, which in turn moves the end cap, permanently opening or closing it and enabling a manually adjustable one-way valve function.

[0043] In summary, by employing the above-mentioned technical solution of this utility model, and using a symmetrically arranged end cap and spring structure that can be independently controlled, and by using a knob to drive the slider to directly control the opening and closing state of the end cap, users can quickly switch the unidirectional flow direction of gas without disassembling the valve. Thus, while maintaining the advantages of the straight-through pipeline layout, it achieves the function of a bidirectional controllable one-way valve. Its integrated design structure is compact and easy to install, and the full use of stainless steel degreased material ensures its safety and durability in medical oxygen environments.

[0044] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A straight-through, manually reversible check valve for oxygen, comprising a valve body (1), characterized in that: Both ends of the valve body (1) are provided with an operating knob (7), a slider (5), a head (2) and a spring (3); the operating knob (7) is threadedly connected to the slider (5); the slider (5) is connected to the head (2); the spring (3) is disposed between the head (2) and the valve body (1); rotating the operating knob (7) can drive the slider (5) to move along the axial direction of the valve body (1), thereby driving the head (2) to compress or release the spring (3), so that the head (2) is separated from or sealed to the valve body (1).

2. The oxygen-use straight-through manually reversible check valve according to claim 1, characterized in that, A sealing ring (4) is provided on the end cap (2) for forming a seal with the valve body (1).

3. The oxygen-use straight-through manually reversible check valve according to claim 1, characterized in that, The valve body (1) has a straight-through structure, with its inlet and outlet located on the same straight line.

4. The oxygen-use straight-through manually reversible check valve according to claim 1, characterized in that, The slider (5) is radially fixed and can only move along the axial direction of the valve body (1).

5. The oxygen-use straight-through manually reversible check valve according to claim 1, characterized in that, The spring (3) is a compression spring, which normally causes the end cap (2) to press against the valve body (1).

6. The oxygen-use straight-through manually reversible check valve according to claim 1, characterized in that, The threaded connection between the operating knob (7) and the slider (5) is configured to allow precise adjustment of the axial displacement of the slider (5) by rotating the operating knob (7).

7. The oxygen-use straight-through manually reversible check valve according to claim 1, characterized in that, The valve body (1) and all components are made of stainless steel and have undergone degreasing treatment.

8. A straight-through manually reversible check valve for oxygen according to any one of claims 1 to 7, characterized in that, The valve body (1) consists of two parts connected by a stainless steel internal threaded top cover (8) and a stainless steel external threaded top cover (9).

9. A straight-through manually reversible check valve for oxygen as described in claim 8, characterized in that, The slider (5) is fixedly connected to the end cap (2) by an internal hex screw (6).

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