Gas quarter-turn ball valve

Abstract

The utility model discloses a gas right angle ball valve, including right angle valve body, ball core, sealing washer ring, annular supplementary core and butterfly handle. The first direction part of right angle valve body can be connected pipeline through the positive tooth internal thread of equivalent diameter 20mm, and the second direction part can be connected pressure reducing valve through the reverse tooth internal thread of equivalent diameter 22mm. The valve cavity is located the first direction part, and the ball core is isolated with the inner wall of valve cavity through two sealing washer rings. The annular supplementary core is located in the first direction part for one sealing washer ring abutting. The bending part of right angle valve body is adjacent to the valve cavity, and the inner diameter is less than two direction parts, and the circular ring step of one end is for another sealing washer ring abutting, and the part located in the bending radial inboard forms the convex part that protrudes along the bending angle median line to the bending radial outboard. The convex part is locally equipped with the circular ring step.

Description

Technical Field

[0001] This utility model belongs to the field of gas pipeline fittings, specifically relating to a ball valve. Background Technology

[0002] In indoor gas pipelines, if a linear valve is connected in series with a pressure reducing valve, the pressure reducing valve may be bumped when the valve is manually operated. To reduce this risk, an elbow can be installed between the pressure reducing valve and the linear valve, or a right-angle valve can be used instead of the linear valve. Existing gas right-angle valves, such as those disclosed in Chinese patents CN213685665U, CN214063925U, CN216078501U, and CN218762073U, all have their valve chambers located at the bends. Utility Model Content

[0003] The technical problem to be solved by this invention is how to improve the right-angle switch valve used in gas pipelines to simplify its structure.

[0004] This utility model discloses a gas right-angle ball valve.

[0005] The gas right-angle ball valve includes a right-angle valve body, a ball core, two sealing rings, an annular filling core, and a butterfly handle;

[0006] The right-angle valve body is configured as a roughly L-shaped pipe fitting, including a first direction section, a second direction section, a bending section, and an operating section;

[0007] The inner diameter of the bent part is smaller than the inner diameter of the first direction part and the second direction part. The first direction part is provided with a valve cavity. The ports of the first and second directions parts are provided with internal threads, external threads or snap-fit ​​structures.

[0008] The ball core is located inside the valve cavity and is isolated from the inner wall of the valve cavity by two sealing gaskets. One end is connected to the butterfly handle located at the end of the operating part.

[0009] The annular core engages with the inner wall of the first direction portion via external threads, with its inner end abutting against one of the sealing gasket rings;

[0010] Wherein, the inner diameter of the bent portion is smaller than the inner diameter of the first direction portion and the second direction portion, and one end of the portion communicating with the valve cavity is provided with an annular step for the other sealing gasket ring to abut against, and the portion located on the radial inner side of the bend is configured as a protrusion that protrudes radially outward along the midline of the right angle of the bend; a portion of the annular step is provided on the protrusion.

[0011] In some embodiments, the first directional portion may have a 20mm equivalent diameter positive thread for connecting to a pipeline; the second directional portion may have a 22mm equivalent diameter reverse thread for connecting to a pressure reducing valve. That is, the first directional portion of the right-angle valve body can connect to a pipeline via a 20mm equivalent diameter positive thread, and the second directional portion can connect to a pressure reducing valve via a 22mm equivalent diameter reverse thread. The above thread structure conforms to general gas industry standards; other connection mechanisms may be used to meet special requirements.

[0012] In some embodiments, the gas right-angle ball valve may further include:

[0013] A transmission component is rotatably disposed within the operating part, one end of which is detachably fixed to the ball core, and the other end is fixedly mounted on the butterfly handle by a screw.

[0014] In some embodiments, the annular core may have another annular step at its inner end.

[0015] In some embodiments, the core may be substantially spherical in its free state.

[0016] In some embodiments, the butterfly handle may be configured as an aluminum alloy component or a stainless steel component.

[0017] In some embodiments, the right-angle valve body and the ball core may be configured as zinc-copper alloy components or stainless steel components.

[0018] In some embodiments, the sealing ring may be configured as a polytetrafluoroethylene component, and the outer wall of the inner end of the annular core may be provided with an annular groove in which a nitrile rubber sealing ring is embedded.

[0019] By implementing the technical solution of this utility model, the following beneficial effects can be obtained:

[0020] This utility model discloses a gas right-angle ball valve, which is small in size and simple in structure, including a right-angle valve body, a ball core, a sealing gasket ring, an annular filler core, and a butterfly handle. The valve cavity is located in the first direction portion of the right-angle valve body, and the ball core is isolated from the inner wall of the valve cavity by two sealing gasket rings. The annular filler core is located inside the first direction portion for one sealing gasket ring to abut against. The bent portion of the right-angle valve body is adjacent to the valve cavity, and its inner diameter is smaller than that of the two direction portions. The annular step at one end is for the other sealing gasket ring to abut against. The portion located radially inner to the bend forms a protrusion that bulges out radially outward along the midline of the bend angle. The protrusion has a partial annular step. Attached Figure Description

[0021] The accompanying figures should be used in conjunction with the specific implementation details.

[0022] Figure 1 This is a side view of the gas right-angle ball valve in the first embodiment, in the open state;

[0023] Figure 2 This is an axial cross-sectional view of the gas right-angle ball valve in Embodiment 1, showing it in the open state. Detailed Implementation

[0024] The embodiments are described below with reference to the accompanying drawings.

[0025] In this specification, unless otherwise specified, "one embodiment," "some embodiments," and "other embodiments" are used to distinguish different embodiments and do not refer to all embodiments in general; the accompanying drawings are schematic diagrams, not scale diagrams; the directions / positions indicated by top, bottom, center, edge, inner, outer, far, near, long, wide, vertical, horizontal, up, down, front, back, left, right, etc., are based on the viewing angle of the accompanying drawings and should not be interpreted as the component / device being located in a specific position or facing a specific direction; the sequence words such as first, second, third, etc., are used to distinguish components / devices with the same function / name and have no sequential meaning.

[0026] Example 1

[0027] A gas-fired right-angle ball valve is disclosed.

[0028] This right-angle gas ball valve is used in indoor gas pipelines, connected in series downstream of a pressure reducing valve, and located together with the pressure reducing valve above the ceiling or within the pipe wall. Manual operation of this right-angle gas ball valve is not affected by the pressure reducing valve, reducing the risk of damage to the pressure reducing valve. One improvement of this right-angle gas ball valve is that the valve cavity avoids bends, thus its structure approximates that of a straight ball valve.

[0029] Please see Figure 1 and Figure 2 The gas right-angle ball valve includes a visible right-angle valve body 2, a butterfly handle 1 and a screw 5, and also includes an internal ball core 4, an annular filler core 3, a transmission component 7, two sealing gaskets and three sealing rings.

[0030] The butterfly handle 1 is made of aluminum alloy, the screw 5 is made of stainless steel, and the right-angle valve body 2, annular filler core 3, ball core 4, and transmission component 7 are all made of zinc-copper alloy. The sealing gasket ring is made of polytetrafluoroethylene. The sealing ring is made of nitrile rubber.

[0031] The right-angle valve body 2 is configured as a generally L-shaped pipe, including a first directional portion 21, a second directional portion 22, a bending portion 23, and an operating portion 24. One of the two directional portions extends horizontally while the other extends vertically. Figure 2 The two mutually perpendicular dashed lines with arrows indicate the central axis of the two directions and the direction of gas flow. The bend 23 corresponds to a 90-degree virtual arc, and the radial direction of this virtual arc is called the "bend radial direction". Figure 2 The dashed line R with an arrowhead extends along a bend radial direction and lies on the midline of a 90-degree bend angle.

[0032] The port 211 of the first directional part 21 is provided with a positive internal thread 213, and the port 221 of the second directional part 21 is provided with a negative internal thread 223, so that the right-angle valve body 2 can be installed into the gas pipeline.

[0033] The inner diameter of the bent portion 23 is smaller than the inner diameter of the first directional portion 21 and the second directional portion 22. The inner diameter of the ports of these two directional portions is the largest, while the inner diameter at the connection point of the bent portion 23 is the smallest. Visually, the first directional portion 21 has a first neck 212, and the second directional portion 22 has a second neck 222.

[0034] The internal space of the first neck 212 of the first direction portion 21 is configured as a valve chamber 21a.

[0035] The ball core 4 is disposed within the valve cavity 21a and is isolated from the inner wall of the valve cavity 21a by sealing gaskets 61 and 62. One end is driven to the butterfly handle 1 on the surface of the right-angle valve body 2. Specifically, the transmission component 7 is rotatably disposed in the operating part 24. One end of the transmission component 7 is detachably fixedly connected to the ball core 4, and the other end of the transmission component 7 is fixedly mounted to the center of the butterfly handle 1 by screws 5. Two sealing rings 82 are provided between the circumferential side of the transmission component 7 and the inner wall of the operating part 24.

[0036] The outer end of the annular core 3 is externally threaded into the first direction part 21, and the end face can be inserted with an internal hex wrench.

[0037] The inner end of the annular core 3 has a circular step that partially surrounds and abuts against the sealing gasket ring 61, and the outer circumferential wall has an annular groove. A sealing ring 81 is embedded in the annular groove.

[0038] One end of the connecting valve cavity 21a of the bent portion 23 is provided with an annular step 233 for the sealing gasket 62 to abut against. That is, the sealing gasket 62 is installed on the annular step 233.

[0039] A portion of the bent portion 23 located radially inner is configured as a protrusion 231 that protrudes radially outward along the midline of the right angle of the bend. A portion of the annular step 233 is provided on the protrusion 231.

[0040] The ball core 4 is basically spherical in its free state, and is squeezed by two sealing gaskets 61 and 62 after assembly. Figure 2 The illustrated sphere core 4 is somewhat deformed.

[0041] The butterfly handle 1 is fixedly mounted to the top of the transmission component 7 by screws 5 and is located at the end of the operating part 24. The mating structure between the butterfly handle 1 and the operating part 24 is common knowledge in the field of valve technology and will not be described in detail here. Figure 1 The gray filler on the butterfly handle 1 is only to indicate that its material is different from other parts.

[0042] Figure 1 and Figure 2 The diagram shows the open state of the gas right-angle ball valve. The gas right-angle ball valve can be closed by manually operating the butterfly handle 1 to drive the ball core 4 to rotate 90 degrees.

[0043] The technical features of this gas-fired right-angle ball valve are as follows:

[0044] 1) The valve cavity avoids the bend, so the valve cavity structure and the ball core structure can be basically the same as those of a linear valve, thus simplifying the structure.

[0045] 2) A portion of the inner side of the bend in the bending radial direction protrudes outward from the bending radial direction and extends along the midline of the bend angle; thus, the annular step of the bend that abuts the sealing gasket not only closely adjacent to the bend but also appropriately extends into the bend; therefore, the axial length of the gas right-angle ball valve in the first direction increases only slightly.

[0046] 3) The inner diameter of the bent portion is smaller than the inner diameter of the first direction portion and the second direction portion, which further reduces the axial length of the first direction portion.

[0047] In this gas right-angle ball valve, the first directional portion 21 is provided with a positive thread 213 of equivalent diameter 20mm for connecting to a pipeline; the second directional portion 22 is provided with a reverse thread 223 of equivalent diameter 22mm for connecting to a pressure reducing valve. That is, the first directional portion 21 of the right-angle valve body 2 can be connected to a pipeline via the positive thread 213 of equivalent diameter 20mm, and the second directional portion 22 can be connected to a pressure reducing valve via the reverse thread 223 of equivalent diameter 22mm. The above thread structure conforms to general gas industry standards; other connection structures should be used to meet special requirements.

[0048] In another embodiment, the butterfly handle 1, screw 5, right-angle valve body 2, annular core 3, ball core 4 and transmission component 7 are all stainless steel components, and the sealing ring is a silicone rubber component.

[0049] In other embodiments, the ports of the first directional portion 21 and the second directional portion 21 are provided with external threads or snap-fit ​​structures to connect special types of pipeline components.

[0050] In another embodiment, the ball core is drum-shaped and connected to the transmission member 7 with one end plane.

[0051] The above embodiments, application examples, and technical analyses are intended to introduce the technical concept and features of this utility model, enabling those skilled in the art to implement the technical solution of this utility model, and do not constitute a limitation on the scope of protection claimed. Simple modifications and equivalent transformations to the embodiments are all within the above-mentioned scope of protection.

Claims

1. A gas right-angle ball valve, comprising a right-angle valve body (2), a ball core (4), two sealing rings (6), an annular filler core (3), and a butterfly handle (1); The right-angle valve body (2) is configured as a roughly L-shaped pipe, including a first direction part (21), a second direction part (22), a bending part (23) and an operating part (24). The first directional part (21) is provided with a valve cavity (21a), and the ports of the first directional part (21) and the second directional part (22) are provided with internal threads, external threads or snap-fit ​​structures; The ball core (4) is set in the valve cavity (21a) and is isolated from the inner wall of the valve cavity (21a) by two sealing gaskets (6). One end is connected to the butterfly handle (1) located at the end of the operating part (24). The annular core (3) engages with the inner wall of the first direction portion (21) with an external thread, and abuts against one of the sealing gaskets (6) with its inner end. Its features are: The inner diameter of the bent portion (23) is smaller than that of the inner diameter of the first direction portion (21) and the second direction portion (22). One end of the portion connecting to the valve cavity (21a) is provided with an annular step (233) for the other sealing gasket ring (6) to abut against. The portion located on the inner side of the bend is configured as a protrusion (231) that protrudes outward along the midline of the right angle of the bend. A portion of the circular step (233) is disposed on the protrusion (231).

2. The gas right-angle ball valve according to claim 1, characterized in that: The first directional part is provided with a positive internal thread with an equivalent diameter of 20mm to facilitate connection to a pipe; The second direction part is provided with a reverse internal thread with an equivalent diameter of 22mm for connecting a pressure reducing valve.

3. The gas right-angle ball valve according to claim 1, characterized in that... Also includes: A transmission component is rotatably disposed within the operating part, one end of which is detachably fixed to the ball core, and the other end is fixedly mounted on the butterfly handle by a screw.

4. The gas right-angle ball valve according to claim 1, characterized in that: The annular core has an inner end with another annular step that matches the sealing gasket ring.

5. The gas right-angle ball valve according to claim 1, characterized in that: The core is essentially spherical in its free state.

6. The gas right-angle ball valve according to claim 1, characterized in that: The butterfly handle is configured as an aluminum alloy component or a stainless steel component.

7. The gas right-angle ball valve according to claim 1, characterized in that: Both the right-angle valve body and the ball core are configured as zinc-copper alloy components or stainless steel components.

8. The gas right-angle ball valve according to claim 1, characterized in that: The sealing ring is configured as a polytetrafluoroethylene component, and the inner end of the annular core has an annular groove on its outer wall, in which a nitrile rubber sealing ring is embedded.

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