Low pressure ball valve oxygen switch

Abstract

The utility model belongs to valve body design technical field, concretely relates to a low pressure ball valve oxygen switch, include: valve body (1), steel ball (2), axle (3), stop collar (4), packing ring (5), damping washer (6), nut (7), handle (8), spring washer (9), screw (10), the inside of valve body is equipped with four stage step hole of decreasing diameter from top to bottom in proper order, and the fourth stage hole is used as oxygen inlet, and the third stage hole is connected outside through radial through -hole and is used as oxygen outlet, the front end fixed steel ball of axle, and steel ball is used for closing oxygen inlet, axle is connected with the third stage step hole inner wall thread, the upper end of axle installs handle, packing ring is installed between the first stage step hole inner upper and lower ends and installs damping washer.

Description

Technical Field

[0001] This utility model belongs to the field of valve body design technology, specifically relating to a low-pressure ball valve oxygen switch. Background Technology

[0002] In China, the airflow regulating switch typically installed on oxygen regulators uses a non-metallic flat valve. This simple structure only functions as an on / off switch; the handle can only be placed in the "on" or "off" position and cannot adjust the flow rate. (See attached image.) Figure 2 Flow-regulating valves have a more complex structure, also using non-metallic flat valves, and are not mounted on the regulator; they are for standalone use, as shown in the attached document. Figure 3 Non-metallic flat valves are significantly affected by environmental factors such as temperature, and their airtightness is inferior to that of metal ball valves in harsh environments. Therefore, a low-pressure ball valve oxygen switch is needed, requiring small size, good airtightness, and the ability to regulate flow. Utility Model Content

[0003] Purpose of this utility model: To provide a low-pressure ball valve oxygen switch that is small in size, has good airtightness, and can be installed on an oxygen regulator. The low-pressure ball valve oxygen switch of this utility model adopts a spherical structure, and the valve is opened and closed by rotating a handle and shaft.

[0004] Technical solution: A low-pressure ball valve oxygen switch includes: valve body 1, steel ball 2, shaft 3, retaining ring 4, sealing washer 5, damping washer 6, nut 7, handle 8, spring washer 9, and screw 10. The valve body has four stepped holes with decreasing diameters from top to bottom. The fourth hole serves as the oxygen inlet, and the third hole is connected to the outside through a radial through hole as the oxygen outlet. A steel ball is fixed at the front end of the shaft; the steel ball is used to close the oxygen inlet. The shaft is threaded into the inner wall of the third-stage stepped hole; A handle is installed on the upper end of the shaft; Sealing washers are installed at both the top and bottom ends of the first-stage stepped hole, and damping washers are installed between the sealing washers.

[0005] Furthermore, after installing the steel ball 2 in the hemispherical hole at the front end of the shaft 3, the opening is closed, and the closing structure restricts the steel ball 2 from rotating in the hemispherical hole and prevents it from falling off.

[0006] Furthermore, the nut 7 is fitted onto the shaft 3 and threaded to the upper end of the valve body, used to lock the sealing washer and damping washer onto the stepped surface of the first and second stage stepped holes in the valve body.

[0007] Install the retaining ring 4 and tighten it in the groove of the shaft 3; Furthermore, one end face of the inner wall of the sealing washer is chamfered, with the chamfer facing the damping washer; Quantity 5-8 damping washers, soak them in glycerin and then blot them dry with oil filter paper.

[0008] Furthermore, an annular groove is provided in the middle of the shaft, and a retaining ring is installed in the annular groove. The retaining ring moves between the sealing washer at the lower end and the stepped surface of the second and third stage stepped hole of the valve body to limit the movement of the shaft.

[0009] Furthermore, a handle 8 and a spring washer 9 are sequentially installed on the upper end of shaft 3, and then screws 10 are tightened.

[0010] Furthermore, the valve body 1 is made of brass Hpb59-1, and the fourth-stage stepped hole serves as the valve seat opening, with a valve seat opening size of φ1.5mm; The diameter of steel ball 2 is φ3mm; The shaft 3 is made of stainless steel 2Cr13, and the thread size that fits with the valve body 1 is M6. The end has 36 teeth to drive the handle 8 to rotate. The retaining ring 4 is made of bronze QSn4-3; Sealing gasket 5 is made of brass Hpb59-1; Damping washer 6 is made of leather; Nut 7 is made of brass Hpb59-1; The handle 8 is made of hard aluminum and has 36 teeth in the inner cavity. When the handle is rotated, it drives the shaft 3 to rotate through gear transmission. Spring washer 9 is made of 65Mn steel; Screw 10 is made of brass Hpb59-1.

[0011] Furthermore, when the input pressure is 6 kgf / cm 2 When the handle 8 is in the closed position, the steel ball 2 is airtight; when the handle 8 is turned to the open position, oxygen flows from the inlet through the open steel ball 2 to the outlet.

[0012] Beneficial effects: This invention provides a low-pressure ball valve oxygen switch, which is small in size, has good valve airtightness, and can be used alone or installed on an oxygen regulator. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of the low-pressure ball valve oxygen switch of this utility model.

[0014] Figure 2 This is a schematic diagram of an existing switch. Figure 1 .

[0015] Figure 3 This is a schematic diagram of an existing switch. Figure 2 . Detailed Implementation

[0016] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0017] In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0018] Furthermore, the terms "installation," "setup," "equipped with," "connection," "linking," and "socketing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] 1. A low-pressure ball valve oxygen switch, comprising a valve body 1, a steel ball 2, a shaft 3, a retaining ring 4, a sealing washer 5, a damping washer 6, a nut 7, a handle 8, a spring washer 9, and a screw 10.

[0021] 2. Valve body 1, used to install steel ball 2, shaft 3, retaining ring 4, sealing ring 5, damping washer 6, nut 7, and to form the necessary cavity and oxygen passage.

[0022] 3. After installing the steel ball 2 on the shaft 3, close the opening and ensure that the steel ball 2 can rotate and cannot fall off the shaft 3; 4. Place the nut 7 on the shaft 3 with the steel ball, then put on a sealing washer 5, making sure the chamfer faces outward. Take 5-8 damping washers 6 that have been soaked in glycerin and dried with filter paper, put them on the shaft 3 with the steel ball, and then put on another sealing washer 5, making sure the chamfer faces inward. Install the retaining ring 4 and tighten it in the groove of the shaft 3. 5. After assembling shaft 3, install it into valve body 1 and tighten nut 7; install handle 8 and spring washer 9 on the upper end of shaft 3 in sequence, and then tighten screw 10.

[0023] 6. Valve body 1 is made of brass Hpb59-1, and the valve seat opening size is φ1.5; steel ball 2 has a diameter of φ3; shaft 3 is made of stainless steel 2Cr13, with an M6 thread size that mates with valve body 1, and 36 teeth at the end to drive handle 8 to rotate; retaining ring 4 is made of bronze QSn4-3; sealing washer 5 is made of brass Hpb59-1; damping washer 6 is made of leather; nut 7 is made of brass Hpb59-1; handle 8 is made of hard aluminum, with 36 teeth in the inner cavity, and when the handle rotates, it drives shaft 3 to rotate through gear transmission; spring washer 9 is made of 65Mn steel; screw 10 is made of brass Hpb59-1.

[0024] 7. The air intake channel is located at the lower part of valve body 1, and the air outlet channel is located on the side of valve body 1.

[0025] 8. When the input pressure is 6 kgf / cm 2 When the handle 8 is in the closed position, the steel ball 2 should be airtight; when the handle 8 is turned to the open position, the threaded connection and the mating part of the nut 7 and the shaft 3 should be airtight, and oxygen should flow from the inlet to the outlet through the opened steel ball 2.

[0026] The above description is merely a specific embodiment of this utility model, providing a detailed description of the utility model. Parts not covered in detail are conventional techniques. However, the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this utility model should be included within the protection scope of this utility model. The protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A low-pressure ball valve oxygen switch, characterized in that, The low-pressure ball valve oxygen switch includes: valve body (1), steel ball (2), shaft (3), retaining ring (4), sealing washer (5), damping washer (6), nut (7), handle (8), spring washer (9), and screw (10); The valve body has four stepped holes with decreasing diameters from top to bottom. The fourth hole serves as the oxygen inlet, and the third hole is connected to the outside through a radial through hole as the oxygen outlet. A steel ball is fixed at the front end of the shaft; the steel ball is used to close the oxygen inlet. The shaft is threaded into the inner wall of the third-stage stepped hole; A handle is installed on the upper end of the shaft; Sealing washers are installed at both the top and bottom ends of the first-stage stepped hole, and damping washers are installed between the sealing washers.

2. The low-pressure ball valve oxygen switch according to claim 1, characterized in that, After installing the steel ball (2) in the hemispherical hole at the front end of the shaft (3), the opening is closed. The closing structure restricts the steel ball (2) from rotating in the hemispherical hole and prevents it from falling off.

3. The low-pressure ball valve oxygen switch according to claim 2, characterized in that, The nut (7) is fitted onto the shaft (3) and threaded to the upper end of the valve body. It is used to lock the sealing gasket and damping gasket on the step surface of the first and second step holes in the valve body.

4. The low-pressure ball valve oxygen switch according to claim 3, characterized in that, One end face of the inner wall of the sealing washer is chamfered, with the chamfer facing the damping washer; The number of damping washers (6) is 5 to 8. After soaking in glycerin, they are dried with oil filter paper.

5. The low-pressure ball valve oxygen switch according to claim 4, characterized in that, The shaft has an annular groove in the middle, and a retaining ring is installed in the annular groove. The retaining ring moves between the sealing washer at the lower end and the stepped surface of the second and third step hole of the valve body to limit the movement of the shaft.

6. The low-pressure ball valve oxygen switch according to claim 5, characterized in that, Install the handle (8) and spring washer (9) on the upper end of the shaft (3) in sequence, and then screw on the screw (10) and tighten it.

7. The low-pressure ball valve oxygen switch according to claim 6, characterized in that, The valve body (1) is made of brass Hpb59-1, and the fourth-stage stepped hole serves as the valve seat opening, with a valve seat opening size of φ1.5mm; The diameter of the steel ball (2) is φ3mm; The shaft (3) is made of stainless steel 2Cr13, and the thread size is M6 when it is fitted with the valve body (1). The end has 36 teeth to drive the handle (8) to rotate. The retaining ring (4) is made of bronze QSn4-3; The sealing gasket (5) is made of brass Hpb59-1; The damping washer (6) is made of leather; The nut (7) is made of brass Hpb59-1; The handle (8) is made of hard aluminum and has 36 teeth in the inner cavity. When the handle rotates, it drives the shaft (3) to rotate through gear transmission. The spring washer (9) is made of 65Mn steel; The screw (10) is made of brass Hpb59-1.

8. The low-pressure ball valve oxygen switch according to claim 7, characterized in that, When the input pressure is 6 kgf / cm 2 When the handle (8) is in the closed position, the steel ball (2) is airtight; when the handle (8) is turned to the open position, oxygen flows from the inlet through the open steel ball (2) to the outlet.

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