Dual-drive ball valve with valve element provided with flow adjusting ball

Abstract

The utility model discloses a dual-drive ball valve with a valve core provided with a flow adjusting ball body, which comprises a valve body, and a flow cut-off valve core structure and a flow adjusting valve core structure which are arranged in the valve body, and openings at the left end and the right end of the valve body are fixed through end covers. The flow cut-off valve element structure comprises a fixed supporting valve element, a valve seat supporting ring for installing the fixed supporting valve element in the valve body and an upper valve rod for driving the fixed supporting valve element to rotate, and the flow adjusting valve element structure comprises a flow adjusting ball body and a fixing plate for installing the flow adjusting ball body in the fixed supporting valve element. The lower valve rod drives the flow adjusting ball body to rotate, and a plurality of through holes distributed in an array mode are formed in the flow adjusting ball body in the horizontal direction. The flow adjusting ball body is arranged on the fixed supporting valve core and is driven by the upper valve rod and the lower valve rod respectively, so that the flow is cut off and adjusted respectively, and the service life of the valve is long.

Description

Technical Field

[0001] The utility model relates to a double-driven ball valve with a valve core and a flow regulating ball. Background Art

[0002] Ball valve is a valve whose ball is driven by the valve stem and rotates around the axis of the ball valve. Ball valves are widely used in oil refining, long-distance pipelines, chemicals, papermaking, pharmaceuticals, water conservancy, electricity, municipal administration, steel and other industries, and they play an important role in the national economy. They have the function of rotating 90 degrees, and the plug body is a sphere with a circular through hole or channel passing through its axis.

[0003] Ball valves are mainly used in pipelines to cut off, distribute and change the flow direction of the medium. They can be closed tightly by simply rotating 90 degrees and using a very small torque. Ball valves are most suitable for use as switches and cut-off valves.

[0004] With the development of society, and with the rapid development of modern large-scale machinery, petroleum, chemical industry, new energy, nuclear industry and other industries, the requirements for valves are getting higher and higher. For ball valves, not only are they required to have a cut-off function, but they are also required to have a flow regulation function. At present, for such requirements, it is usually necessary to configure another valve to achieve flow regulation, and cooperate with the ball valve to achieve the purpose of cutting off and regulating the flow. Such a structure will not only make the structure of the pipeline more complicated, but the flow regulation valve also does not have the characteristic of long service life of the ball valve. Utility Model Content

[0005] In view of the above problems, the utility model provides a double-driven ball valve with a valve core and a flow regulating ball, which effectively solves the problems pointed out in the background technology.

[0006] The technical solution adopted by the utility model is:

[0007] A double-driven ball valve with a valve core and a flow regulating ball, comprising a valve body, and a flow cut-off valve core structure and a flow regulating valve core structure arranged in the valve body, the openings at the left and right ends of the valve body are fixed by end covers, the flow cut-off valve core structure comprises a fixed support valve core, a valve seat support ring for installing the fixed support valve core in the valve body, and an upper valve stem for driving the fixed support valve core to rotate, the flow regulating valve core structure comprises a flow regulating ball, a fixed plate for installing the flow regulating ball in the fixed support valve core, and a lower valve stem for driving the flow regulating ball to rotate, and the flow regulating ball is provided with a plurality of through holes distributed in an array in the horizontal direction.

[0008] Preferably, oil-free lubricating bearings are provided between the upper and lower end sides of the fixed support valve core and the valve body, and the upper end of the fixed support valve core is fixedly connected to the bottom end of the upper valve stem.

[0009] Preferably, thrust pads are provided between the upper and lower end surfaces of the fixed support valve core and the valve body.

[0010] Preferably, an O-ring and a refractory ring for sealing are provided between the valve seat support ring and the end cover.

[0011] Preferably, oil-free lubricated bearings are provided between the upper and lower end sides of the flow regulating ball and the fixed support valve core and the fixed plate, and the lower valve stem passes through the fixed support valve core from bottom to top and is fixedly connected to the lower end of the flow regulating ball.

[0012] Preferably, a valve stem sleeve is provided between the fixed support valve core and the lower valve stem.

[0013] Preferably, the top end of the lower valve stem is fixed to the flow regulating ball by a positioning pin.

[0014] Preferably, thrust pads are provided between the upper and lower end surfaces of the flow regulating ball and the fixed supporting valve core.

[0015] Preferably, the end cover and the valve body are positioned by positioning pins, and fixed to the valve body by bolts.

[0016] The utility model arranges a flow regulating ball on the fixed support valve core and drives it through the upper valve stem and the lower valve stem respectively, thereby realizing flow cut-off and flow regulation respectively. Hard seals are adopted between the fixed support valve core and the valve seat support ring, and between the flow regulating ball and the fixed support valve core, so as to ensure the wear resistance of the sealing surface of the ball valve and effectively prolong the service life of the valve.

[0017] The utility model has not only a simple structure, good sealing performance, convenient installation, and is very flexible in disassembly and replacement, but also has a multi-channel sealing function. The flow regulating ball can be adjusted, has two functions of cutting off and adjusting, and has dual-drive operation. It has a long service life and is suitable for various working conditions with high sealing requirements, which improves the user experience. Its beneficial effects are as follows:

[0018] 1. The use of hard seal can ensure the wear resistance of the sealing surface of the ball valve and effectively extend the service life of the valve.

[0019] 2. The valve adopts a double-drive design with a valve core and a flow regulating ball. The installation and disassembly are very simple, safe and reliable;

[0020] 3. The valve seat support ring and the fixed support valve core are sealed once, and the flow regulating ball and the fixed support valve core are sealed twice. It is a double-sealed valve with a truly operable drive mode. The double-drive valve can effectively prevent the medium from being cut off in the event of sealing surface failure. This valve can be used for regulation;

[0021] 4. The product is suitable for installation on pipelines under various working conditions in the petroleum, chemical, pharmaceutical, and power industries, and has reliable performance, sealing and functions. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the longitudinal sectional structure of the utility model. DETAILED DESCRIPTION

[0023] It should be noted that the following detailed descriptions are illustrative and are intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present application belongs.

[0024] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0025] In addition, in the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0026] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "plurality" means two or more, unless otherwise clearly defined.

[0027] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0029] The present invention is further described in detail below through specific embodiments in conjunction with the accompanying drawings.

[0030] like Figure 1 As shown, a double-driven ball valve with a valve core and a flow regulating ball comprises a valve body 1, and a flow cut-off valve core structure and a flow regulating valve core structure arranged in the valve body 1. The openings at the left and right ends of the valve body 1 are fixed by end covers 2. The flow cut-off valve core structure comprises a fixed support valve core 3, a valve seat support ring 4 for installing the fixed support valve core 3 in the valve body 1, and an upper valve stem 5 for driving the fixed support valve core 3 to rotate. The flow regulating valve core structure comprises a flow regulating ball 6, a fixing plate 7 for installing the flow regulating ball 6 in the fixed support valve core 3, and a lower valve stem 8 for driving the flow regulating ball 6 to rotate. The flow regulating ball 6 is provided with a plurality of through holes 9 distributed in an array along the horizontal direction.

[0031] Oil-free lubricating bearings 10 are provided between the upper and lower side portions of the fixed support valve core 3 and the valve body 1 , and the upper end of the fixed support valve core 3 is fixedly connected to the bottom end of the upper valve stem 5 .

[0032] Thrust pads are provided between the upper and lower end surfaces of the fixed support valve core 3 and the valve body 1 .

[0033] An O-ring and a refractory ring for sealing are provided between the valve seat support ring 4 and the end cover 2 .

[0034] Oil-free lubricated bearings 10 are provided between the upper and lower side portions of the flow regulating ball 6 and the fixed support valve core 3 and the fixed plate 7. The lower valve stem 8 passes through the fixed support valve core 3 from bottom to top and is fixedly connected to the lower end of the flow regulating ball 6.

[0035] A valve stem sleeve 11 is provided between the fixed support valve core 3 and the lower valve stem 8 .

[0036] The top end of the lower valve stem 8 is fixed to the flow regulating ball 6 via a positioning pin.

[0037] Thrust pads are provided between the upper and lower end surfaces of the flow regulating ball 6 and the fixed supporting valve core 3 .

[0038] The end cover 2 is positioned with the valve body 1 by means of positioning pins, and is fixed with the valve body 1 by means of bolts.

[0039] The utility model can control the rotation of the fixed support valve core 3 through the upper valve stem 5, so as to perform cut-off control. When the fixed support valve core 3 is in the passage, the flow regulating ball 6 can be controlled to rotate through the lower valve stem 8, so as to adjust the flow control. When the through hole 9 is parallel to the channel in the valve body 1, all the through holes 9 have liquid flowing through them, and are in a state of maximum flow. When the through hole 9 is perpendicular to the channel in the valve body 1, all the through holes 9 have no liquid flowing through them, and are in a disconnected state.

[0040] Some structures mentioned in the present invention are conventional technical means in the field and will not be described in detail, such as positioning pins, O-rings, refractory rings, bolts, thrust pads, etc.

[0041] Finally, it should be noted that the above examples are only specific embodiments of the present invention. Obviously, the present invention is not limited to the above embodiments, and there are many variations. All variations that can be directly derived or associated with the content disclosed by a person skilled in the art from the present invention should be considered as the protection scope of the present invention.

Claims

1. A double-driven ball valve with a valve core and a flow regulating ball. It is characterized in that The invention comprises a valve body (1), and a flow cut-off valve core structure and a flow regulating valve core structure arranged in the valve body (1); the openings at the left and right ends of the valve body (1) are fixed by end covers (2); the flow cut-off valve core structure comprises a fixed support valve core (3), a valve seat support ring (4) for mounting the fixed support valve core (3) in the valve body (1), and an upper valve stem (5) for driving the fixed support valve core (3) to rotate; the flow regulating valve core structure comprises a flow regulating ball (6), a fixed plate (7) for mounting the flow regulating ball (6) in the fixed support valve core (3), and a lower valve stem (8) for driving the flow regulating ball (6) to rotate; the flow regulating ball (6) is provided with a plurality of through holes (9) distributed in an array in a horizontal direction.

2. A double-drive ball valve with a valve core and a flow regulating ball according to claim 1, It is characterized in that Oil-free lubricating bearings (10) are provided between the upper and lower side portions of the fixed support valve core (3) and the valve body (1), and the upper end of the fixed support valve core (3) is fixedly connected to the bottom end of the upper valve stem (5).

3. A double-drive ball valve with a valve core and a flow regulating ball according to claim 2, It is characterized in that Thrust pads are provided between the upper and lower end surfaces of the fixed support valve core (3) and the valve body (1).

4. A double-drive ball valve with a valve core and a flow regulating ball according to claim 3, It is characterized in that An O-ring and a refractory ring for sealing are provided between the valve seat support ring (4) and the end cover (2).

5. A double-drive ball valve with a valve core and a flow regulating ball according to claim 4, It is characterized in that Oil-free lubricating bearings (10) are provided between the upper and lower side portions of the flow regulating ball (6) and the fixed support valve core (3) and the fixed plate (7); the lower valve stem (8) passes through the fixed support valve core (3) from bottom to top and is fixedly connected to the lower end of the flow regulating ball (6).

6. A double-drive ball valve with a valve core and a flow regulating ball according to claim 5, It is characterized in that A valve stem shaft sleeve (11) is provided between the fixed support valve core (3) and the lower valve stem (8).

7. A double-drive ball valve with a valve core and a flow regulating ball according to claim 6, It is characterized in that The top end of the lower valve stem (8) is fixed to the flow regulating ball (6) via a positioning pin.

8. A double-drive ball valve with a valve core and a flow regulating ball according to claim 7, It is characterized in that Thrust pads are provided between the upper and lower end surfaces of the flow regulating ball (6) and the fixed supporting valve core (3).

9. A double-drive ball valve with a valve core and a flow regulating ball according to claim 8, It is characterized in that The end cover (2) and the valve body (1) are positioned by means of positioning pins, and are fixed to the valve body (1) by means of bolts.

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