butterfly valve

Abstract

The butterfly valve of the present disclosure comprises a valve body, a valve plate, a valve shaft and a driving assembly. The valve body is provided with a valve cavity. The valve plate is reversibly arranged in the valve cavity to open / close the valve cavity, and the surface is provided with a first sleeve part and a second sleeve part which are spaced and aligned. The valve shaft is rotatably arranged in the valve body, and is fixed in the first sleeve part and the second sleeve part to drive the valve plate to reverse, and the part between the first sleeve part and the second sleeve part is exposed to the outside. The driving assembly is connected with the valve shaft to drive the valve shaft to rotate. The butterfly valve of the present disclosure has simple structure of the part connecting the valve plate and the valve shaft, less required parts and low cost.

Description

Technical Field

[0001] This disclosure relates to the field of butterfly valve technology, and more particularly to a butterfly valve. Background Technology

[0002] In related technologies, butterfly valves, also known as flap valves, are used to control the switching of media in low-pressure pipelines. However, in these technologies, the surface of the butterfly valve plate, especially the part fixedly connected to the valve shaft, often has a relatively complex structure and requires many components, resulting in high costs for butterfly valves. Summary of the Invention

[0003] In view of the shortcomings of the prior art described above, the purpose of this disclosure is to provide a butterfly valve with a simple structure in which the valve plate and valve shaft are connected, requiring fewer parts and having a low cost.

[0004] This disclosure provides a butterfly valve, comprising: a valve body having a valve cavity; a valve plate rotatably disposed within the valve cavity to open / close the valve cavity, and having spaced and aligned first and second sleeve portions on its surface; a valve shaft rotatably disposed within the valve body and fixedly sleeved inside the first and second sleeve portions to drive the valve plate to rotate, with the portion located between the first and second sleeve portions exposed to the outside; and a drive assembly connected to the valve shaft to drive the valve shaft to rotate.

[0005] According to some embodiments provided in this disclosure, a valve port communicating with the valve cavity is formed on the valve body; the drive assembly is implemented as an actuator having a manually rotating part, and the orientation of the manually rotating part is consistent with the orientation of the valve port.

[0006] According to some embodiments provided in this disclosure, the surface of the valve plate is further provided with reinforcing ribs extending radially outward from the first sleeve and / or the second sleeve; wherein, except for the reinforcing ribs and the first sleeve and the second sleeve, other parts of the surface are flat and exposed to the outside.

[0007] According to some embodiments provided in this disclosure, it further includes: a rotation detection component for detecting the rotation of the valve plate; and a control unit, communicatively connected to the drive component and the rotation detection component, for adjusting the drive output of the drive component so that the rotation of the valve plate meets the requirements if the rotation of the valve plate does not meet the requirements.

[0008] According to some embodiments provided in this disclosure, it also includes a magnet and a magnetic sensor, one of which is fixedly disposed, and the other is rotatably connected to the valve plate to reflect the rotation of the valve plate.

[0009] According to some embodiments provided in this disclosure, a rotary potentiometer is also included, comprising: a potentiometer body; and a resistance adjustment element that can rotate and slide along the potentiometer body and is rotatably connected to the valve plate to reflect the rotation of the valve plate.

[0010] According to some embodiments provided in this disclosure, the rotation includes rotation angle and / or rotation speed.

[0011] According to some embodiments provided in this disclosure, the valve shaft is detachably disposed.

[0012] According to some embodiments provided in this disclosure, the valve body is provided with a first fixed seat and a second fixed seat at both ends; the valve shaft is rotatably disposed in the first fixed seat and the second fixed seat.

[0013] According to some embodiments provided in this disclosure, a sealing packing impregnated with lubricant is provided between the first fixed seat and the valve shaft and / or between the second fixed seat and the valve shaft. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of a butterfly valve according to an embodiment of this disclosure.

[0015] Figure 2 This is a cross-sectional view of a butterfly valve according to an embodiment of this disclosure.

[0016] Figure label:

[0017] Valve body 11; valve cavity 1101; first valve port 1102; second valve port 1103; first fixed seat 111; second fixed seat 112; sealing packing 113;

[0018] Valve plate 12; first sleeve 121; first through hole 1211; first reinforcing rib 1212; second sleeve 122; second through hole 1221; second reinforcing rib 1222;

[0019] Valve shaft 13;

[0020] Drive assembly 14; handwheel 141. Detailed Implementation

[0021] The following specific examples illustrate the implementation of this disclosure. Those skilled in the art can easily understand other advantages and effects of this disclosure from the information disclosed herein. This disclosure can also be implemented or applied through other different specific embodiments, and various details in this disclosure can be modified or changed according to different viewpoints and application modules without departing from the spirit of this disclosure. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this disclosure can be combined with each other.

[0022] The embodiments of this disclosure will now be described in detail with reference to the accompanying drawings, so that those skilled in the art to which this disclosure pertains can readily implement it. This disclosure may be embodied in many different forms and is not limited to the embodiments described herein.

[0023] In this disclosure, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic represented in connection with that embodiment or example is included in at least one embodiment or example of this disclosure. Furthermore, the specific features, structures, materials, or characteristics represented may be combined in any suitable manner in any one or a group of embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples represented in this disclosure, as well as the features of those different embodiments or examples.

[0024] Furthermore, the terms "first" and "second" are used for illustrative purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the representation of this disclosure, "a set" means two or more, unless otherwise explicitly specified.

[0025] For the purpose of clarity, devices unrelated to the description are omitted, and the same or similar components throughout the specification are given the same reference numerals.

[0026] Throughout this specification, when it is said that a device is "connected" to another device, this includes not only "direct connection" but also "indirect connection" by placing other components in between. Furthermore, when it is said that a device "comprises" a certain constituent element, unless otherwise stated otherwise, this does not exclude other constituent elements, but rather implies that other constituent elements may be included.

[0027] While the terms first, second, etc., are used in some examples herein to refer to various elements, these elements should not be limited by these terms. These terms are used only to distinguish one element from another. For example, first interface and second interface, etc., are used. Furthermore, as used herein, the singular forms “a,” “an,” and “the” are intended to also include the plural forms unless the context indicates otherwise. It should be further understood that the terms “comprising,” “including,” indicate the presence of the stated feature, step, operation, element, module, item, kind, and / or group, but do not exclude the presence, occurrence, or addition of one or more other features, steps, operations, elements, modules, items, kinds, and / or groups. The terms “or” and “and / or” as used herein are interpreted as inclusive, or mean any one or any combination thereof. Thus, “A, B, or C” or “A, B, and / or C” means “any one of: A; B; C; A and B; A and C; B and C; A, B, and C.” Exceptions to this definition will only occur if the combination of elements, functions, steps, or operations is inherently mutually exclusive in some way.

[0028] The technical terms used herein are for reference only to specific embodiments and are not intended to limit the scope of this disclosure. The singular form used herein includes the plural form unless the statement explicitly indicates otherwise. The word "comprising" as used in this specification means to specify a particular characteristic, region, integer, step, operation, element, and / or component, and does not exclude the presence or addition of other characteristics, regions, integers, steps, operations, elements, and / or components.

[0029] Although not explicitly defined, all terms, including technical and scientific terms used herein, shall have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure pertains. Terms defined in commonly used dictionaries shall be further interpreted as having a meaning consistent with the relevant technical literature and the message of the present disclosure, and shall not be over-interpreted as having an ideal or overly formulaic meaning unless otherwise defined.

[0030] In related technologies, the part of the butterfly valve plate that is fixedly connected to the valve shaft often has a relatively complex structure and requires more parts, resulting in a high cost for the butterfly valve.

[0031] In view of this, the present disclosure provides a butterfly valve, the part of which connects the valve plate and the valve shaft has a simple structure, requires few parts, and has low cost.

[0032] Figure 1 This is a schematic diagram of the structure of a butterfly valve according to an embodiment of this disclosure. Figure 2 This is a cross-sectional view of a butterfly valve according to an embodiment of this disclosure. See also... Figure 1 and Figure 2 The butterfly valve of this embodiment includes a valve body 11, a valve plate 12, a valve shaft 13, and a drive assembly 14.

[0033] The valve body 11 has a valve cavity 1101. The valve plate 12 is rotatably disposed within the valve cavity 1101 to open / close the valve cavity 1101. Specifically, the valve cavity 1101 extends through the valve body 11 to form a first valve port 1102 and a second valve port 1103 on opposite surfaces of the valve body 11, respectively. The valve plate 12 is rotatably disposed within the valve cavity 1101 to switch between an open position (opening the first valve port 1102 and the second valve port 1103) and an closed position (closing the first valve port 1102 and the second valve port 1103).

[0034] The valve plate 12 has a first sleeve portion 121 and a second sleeve portion 122 spaced apart and aligned on its surface. The valve shaft 13 is rotatably mounted on the valve body 11 and fixedly sleeved inside the first sleeve portion 121 and the second sleeve portion 122, so that rotation causes the valve plate 12 to flip and switch positions. The portion of the valve plate 12 located between the first sleeve portion 121 and the second sleeve portion 122 is exposed to the outside. Thus, by directly fixing the valve shaft 13 inside the first sleeve portion 121 and the second sleeve portion 122, a fixed connection between the valve shaft 13 and the valve plate 12 is achieved. The structure of the part where the valve shaft 13 is fixedly connected to the valve plate 12 is relatively simple, requires fewer parts, and has low cost.

[0035] Optionally, the valve shaft 13 is detachably fixed inside the first sleeve 121 and the second sleeve 122 to facilitate the assembly, disassembly and replacement of the valve shaft 13.

[0036] Optionally, the first sleeve 121 and / or the second sleeve 122 are provided with through holes, and screws pass through the through holes and are threaded into the valve shaft 13, thereby achieving a fixed connection of the valve shaft 13 within the first sleeve 121 and / or the second sleeve 122. Specifically, the first sleeve 121 is provided with a first through hole 1211, and a first screw passes through the first through hole 1211 and is threaded into the valve shaft 13, thereby achieving a fixed connection of the valve shaft 13 within the first sleeve 121. The second sleeve 122 is provided with a second through hole 1221, and a second screw passes through the second through hole 1221 and is threaded into the valve shaft 13, thereby achieving a fixed connection of the valve shaft 13 within the second sleeve 122.

[0037] Optionally, the surface of the valve plate 12 is further provided with reinforcing ribs, which extend radially outward from the first sleeve portion 121 and / or the second sleeve portion 122. This strengthens the valve plate 12 and its connection with the valve shaft 13. Except for the reinforcing ribs and the first sleeve portion 121 and the second sleeve portion 122, the other parts of the surface are flat and exposed to the outside. Therefore, the valve plate 12 has a simple structure, requires no other components or structures, and is low in cost.

[0038] Specifically, the surface of the valve plate 12 is provided with a first reinforcing rib 1212 extending radially outward from the first sleeve portion 121, and a second reinforcing rib 1222 extending radially outward from the second sleeve portion 122.

[0039] Optionally, the valve body 11 has a first fixing seat 111 and a second fixing seat 112 at both ends. The valve shaft 13 is rotatably disposed in the first fixing seat 111 and the second fixing seat 112, thereby realizing the rotatable installation of the valve shaft 13 on the valve body 11.

[0040] Optionally, a sealing packing 113 impregnated with lubricant is provided between the first fixed seat 111 and the valve shaft 13, and / or between the second fixed seat 112 and the valve shaft 13. Thus, the valve shaft 13 not only provides a sealed connection to the first fixed seat 111 and / or the second fixed seat 112, which helps ensure the sealing performance of the butterfly valve, but the lubricant also helps prevent the valve shaft 13 from becoming stuck during rotation, thus ensuring smooth rotation of the valve shaft 13 within the first fixed seat 111 and / or the second fixed seat 112. Specifically, the sealing packing 113 impregnated with lubricant can be oil-impregnated asbestos packing.

[0041] The drive assembly 14 is connected to the valve shaft 13 and is used to drive the valve shaft 13 to rotate.

[0042] Optionally, the drive assembly 14 is implemented as an actuator with an operating rotating part. The orientation of the operating rotating part is consistent with the orientation of the valve port (i.e., the aforementioned first valve port 1102 and / or the second valve port 1103). Therefore, when manually rotating the operating rotating part to flip the valve plate 12, since the orientation of the operating rotating part is consistent with the orientation of the valve port, the opening status of the valve port after the valve plate 12 is flipped can be seen from the perspective in front of the operating rotating part. This helps in determining whether the butterfly valve is open to the target opening degree, and allows the user to adjust the butterfly valve to the target opening degree based on the actual opening status of the valve port.

[0043] Specifically, the actuator with the rotating part can be a multi-turn electric actuator with a handwheel 141, which is already available in the prior art. The drive source for the multi-turn electric actuator with handwheel 141 to drive the valve shaft 13 to rotate includes a drive motor and the handwheel 141. Furthermore, the multi-turn electric actuator with handwheel 141 can both electrically drive the valve shaft 13 to rotate via the drive motor and drive the valve shaft 13 to rotate by operating the handwheel 141 without starting the drive motor. Therefore, when manually rotating the handwheel 141 to flip the valve plate 12, the user can observe the opening status at the valve port while manually rotating the handwheel 141, thus facilitating timely adjustments to ensure that the butterfly valve is manually opened to the target opening degree.

[0044] Optionally, the butterfly valve further includes a rotation detection component and a control unit. The rotation detection component detects the rotation of the valve plate 12. The control unit is communicatively connected to the drive component 14 and the rotation detection component, and adjusts the drive output of the drive component 14 to ensure the rotation of the valve plate 12 meets the requirements if the rotation of the valve plate 12 does not meet the requirements. This helps ensure that the rotation of the valve plate 12 meets the specified requirements.

[0045] Specifically, the rotation includes the rotation angle and / or rotation speed of the valve plate 12.

[0046] Therefore, if the user deems the rotation angle and / or rotation speed of the valve plate 12 too large, the user can use the control unit to control the output shaft of the drive motor to rotate back and / or reduce its speed, thereby correspondingly reducing the rotation angle and / or rotation speed of the valve plate 12. Conversely, if the user deems the rotation angle and / or rotation speed of the valve plate 12 too small, the user can use the control unit to control the output shaft of the drive motor to continue rotating and / or increase its speed, thereby correspondingly increasing the rotation angle and / or rotation speed of the valve plate 12, thus meeting the different usage needs of different users.

[0047] In some examples, the rotation detection component is a magnetic induction component. The magnetic induction component includes a magnet and a magnetic sensor. One of the magnet and the magnetic sensor is rotatably connected to the valve plate 12, for example, disposed on the valve shaft 13 so that it rotates synchronously with the valve plate 12 as the valve shaft 13 rotates. The other is fixedly disposed, for example, fixed to the housing of the valve body 11 or the drive assembly 14. Thus, during the rotation of the valve plate 12, one of the magnet and the magnetic sensor rotates with the valve plate 12, while the other remains stationary. This causes a change in the magnetic field strength sensed by the magnetic sensor, which in turn reflects the rotation of the valve plate 12, thereby achieving effective monitoring of the rotation of the valve plate 12.

[0048] In other examples, the rotation detection component is a potential sensing component, which includes a rotary potentiometer. The rotary potentiometer includes a potentiometer body and a resistance adjustment element. The resistance adjustment element slides and rotates along the potentiometer body and is rotatably connected to the valve plate 12, for example, by being disposed on the valve shaft 13 so that it rotates synchronously with the valve plate 12 as the valve shaft 13 rotates, and thus slides and rotates along the potentiometer body.

[0049] It is understood that the potentiometer body includes an arc-shaped resistor. The arc-shaped resistor has a first terminal. The resistance adjusting member is rotatably and slidably disposed on the arc-shaped resistor along its circumference, and a second terminal is formed on the resistance adjusting member. Therefore, the resistance length between the first terminal and the second terminal changes accordingly as the resistance adjusting member slides, thereby changing the resistance value of the resistor formed between the first terminal and the second terminal. Consequently, when the rotation of the valve plate 12 changes accordingly, the resistance value of the rotary potentiometer also changes accordingly, allowing the change in the resistance value of the rotary potentiometer to reflect the rotation of the valve plate 12, thus achieving effective monitoring of the rotation of the valve plate 12.

[0050] The above embodiments are merely illustrative of the principles and effects of this disclosure and are not intended to limit this disclosure. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this disclosure. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this disclosure should still be covered by the protection scope of this disclosure.

Claims

1. A butterfly valve, characterized in that, include: The valve body has a valve cavity; A valve plate is rotatably disposed in the valve cavity to open / close the valve cavity, and its surface is provided with a spaced and aligned first sleeve and second sleeve. A valve shaft is rotatably disposed in the valve body and is fixedly sleeved inside the first sleeve and the second sleeve to drive the valve plate to rotate, and the part located between the first sleeve and the second sleeve is exposed to the outside. as well as A drive assembly is connected to the valve shaft to drive the valve shaft to rotate.

2. The butterfly valve according to claim 1, characterized in that, A valve port communicating with the valve cavity is formed on the valve body; The drive assembly is implemented as an actuator with a manually rotating part, and the orientation of the manually rotating part is consistent with the orientation of the valve port.

3. The butterfly valve according to claim 1, characterized in that, The surface of the valve plate is also provided with reinforcing ribs extending radially outward from the first sleeve and / or the second sleeve; Except for the reinforcing ribs and the first and second sleeves, the other parts of the surface are flat and exposed to the outside.

4. The butterfly valve according to claim 1, characterized in that, Also includes: A rotation detection component is used to detect the rotation of the valve plate; as well as The control unit is communicatively connected to the drive assembly and the rotation detection assembly, and is used to adjust the drive output of the drive assembly so that the rotation of the valve plate meets the requirements if the rotation of the valve plate does not meet the requirements.

5. The butterfly valve according to claim 1, characterized in that, It also includes a magnet and a magnetic sensor, one of which is fixedly installed, and the other is rotatably connected to the valve plate to reflect the rotation of the valve plate.

6. The butterfly valve according to claim 1, characterized in that, It also includes a rotary potentiometer, comprising: a potentiometer body; and a resistance adjustment element that can rotate and slide along the potentiometer body and is rotatably connected to the valve plate to reflect the rotation of the valve plate.

7. The butterfly valve according to any one of claims 4 to 6, characterized in that, The rotation includes the rotation angle and / or rotation speed.

8. The butterfly valve according to claim 1, characterized in that, The valve shaft is detachably mounted.

9. The butterfly valve according to claim 1, characterized in that, The valve body is provided with a first fixing seat and a second fixing seat at both ends; The valve shaft is rotatably disposed within the first fixed seat and the second fixed seat.

10. The butterfly valve according to claim 9, characterized in that, A sealing packing impregnated with lubricant is provided between the first fixed seat and the valve shaft and / or between the second fixed seat and the valve shaft.

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