blind valve

Abstract

The blind plate valve comprises a chassis, a valve housing, a valve plate and a valve plate driving mechanism. The valve housing comprises a first valve body and a second valve body. The first valve body and the second valve body are arranged above the chassis and can be moved close to or away from each other. The first valve body and / or the second valve body move downward to contact the chassis. The valve plate is reversibly arranged between the first valve body and the second valve body to connect or cut off the first valve body and the second valve body. The valve plate is provided with an arc-shaped tooth part. The valve plate driving mechanism comprises a valve plate driving part and a transmission wheel. The transmission wheel is in gear engagement with the arc-shaped tooth part, and the valve plate driving part is connected with the transmission wheel to drive the transmission wheel to rotate, so as to drive the valve plate to reverse. The blind plate valve is beneficial to ensure the operation reliability and stability of the blind plate valve.

Description

Technical Field

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

[0002] A blind valve is a type of valve that uses the flipping of a valve plate to achieve both isolation and conduction. However, in related technologies, the stability and reliability of the flipping movement of the valve plate and the movement of part of the valve body are poor, resulting in poor operational stability and reliability of the blind valve. 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 blind valve that helps to ensure the operational reliability and stability of the blind valve.

[0004] The blind valve disclosed herein includes: a base frame; a valve housing including: a first valve body and a second valve body, disposed above the base frame and movably positioned close to / away from the base frame; wherein the first valve body and / or the second valve body moves downward in contact with the base frame; a valve plate, rotatably disposed between the first valve body and the second valve body to conduct / disconnect the first valve body and the second valve body; wherein the valve plate has an arc-shaped toothed portion; a valve plate driving mechanism including a valve plate driving member and a transmission wheel, the transmission wheel meshing with the arc-shaped toothed portion, the valve plate driving member being connected to the transmission wheel to drive the transmission wheel to rotate, thereby causing the valve plate to rotate.

[0005] According to some embodiments provided in this disclosure, the contact is a rolling contact.

[0006] According to some embodiments provided in this disclosure, one of the first valve body and / or the second valve body and the base frame is provided with a rolling element, and the other is provided with a smooth element through which the rolling element rolls.

[0007] According to some embodiments provided in this disclosure, the transmission wheel is a transmission gear, and the arc-shaped toothed portion is an arc-shaped rack that meshes with the transmission gear.

[0008] According to some embodiments provided in this disclosure, the valve plate is provided with at least one relief hole.

[0009] According to some embodiments provided in this disclosure, a clamping drive mechanism is also included, comprising: a plurality of lead screws threaded through the first valve body and engaged inside the second valve body; a clamping drive member for driving one of the lead screws to rotate; and a synchronous drive assembly connected among the plurality of lead screws for driving the other lead screws to rotate synchronously when one of the lead screws rotates, so as to drive the second valve body and the first valve body to move closer to / away from each other to clamp / release the valve plate.

[0010] According to some embodiments provided in this disclosure, the synchronous drive assembly includes: a plurality of synchronous rotating members, which are fixed to a plurality of lead screws in a one-to-one correspondence; and a synchronous belt, which is sleeved on the outside of the plurality of synchronous rotating members.

[0011] According to some embodiments provided in this disclosure, the first valve body is fixedly disposed, and the second valve body is movable relative to the first valve body, moving closer to or further away from it; the valve housing further includes: a fixedly disposed third valve body and a telescopic valve body connected between the third valve body and the second valve body and capable of extension and retraction.

[0012] According to some embodiments provided in this disclosure, the base frame is further provided with a first support leg and a second support leg that correspondingly support the first valve body and the third valve body.

[0013] According to some embodiments provided in this disclosure, the valve plate is provided with a through hole for connecting the first valve body and the second valve body and a blind hole for isolating the first valve body and the second valve body. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the blind valve according to an embodiment of the present disclosure from a first-view perspective.

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

[0016] Figure 3 This is a schematic diagram of the blind valve according to an embodiment of the present disclosure from a second perspective.

[0017] Figure label:

[0018] Base frame 11; Smooth component 111; First support leg 112; Second support leg 113;

[0019] Valve housing 12; first valve body 121; second valve body 122; rolling element 1221; third valve body 123; telescopic valve body 124;

[0020] Valve plate 13; arc-shaped teeth 131; through hole 132; blind hole 133; lightening hole 134;

[0021] Valve plate drive mechanism 14; Valve plate drive component 141; Transmission wheel 142;

[0022] Clamping drive mechanism 15; lead screw 151; first lead screw 151a; second lead screw 151b; clamping drive component 152; synchronous drive assembly 153; synchronous rotating component 1531; first synchronous pulley 1531a; second synchronous pulley 1531b; third synchronous pulley 1531c; synchronous belt 1532. Detailed Implementation

[0023] 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.

[0024] 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.

[0025] 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.

[0026] 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.

[0027] 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.

[0028] 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.

[0029] 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.

[0030] 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.

[0031] 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.

[0032] In blind valves, the valve plate is often driven by a cylinder. However, the stability and reliability of the cylinder can decrease in harsh working environments. For example, in high-temperature and high-humidity environments, the seal is prone to failure, compromising operational stability and reliability. Furthermore, the stability and reliability of parts of the blind valve body during movement also need improvement.

[0033] In view of this, the present disclosure provides a blind plate valve that can ensure the stability and reliability of its valve plate flipping and valve body moving, thereby helping to ensure the operational stability and reliability of the blind plate valve.

[0034] Figure 1 This is a schematic diagram of the blind valve according to an embodiment of the present disclosure from a first-view perspective. Figure 2 This is a cross-sectional view of a blind valve portion according to an embodiment of this disclosure. See also... Figure 1 and Figure 2 A blind valve according to an embodiment of the present disclosure includes a base frame 11, a valve housing 12, a valve plate 13, and a valve plate drive mechanism 14.

[0035] The valve housing 12 includes a first valve body 121 and a second valve body 122. Both the first valve body 121 and the second valve body 122 are disposed above the base frame 11 and are movably positioned close to or away from it. The first valve body 121 and / or the second valve body 122 move downwards in contact with the base frame 11.

[0036] It is understood that the movable valve body will contact the base frame 11 downwards during the movement process, thereby being supported and limited by the base frame 11, which makes the movement stability and reliability of the valve body relatively high.

[0037] Specifically, the first valve body 121 is fixedly mounted on the base frame 11, and the second valve body 122 is movably mounted on the base frame 11. The second valve body 122 is movably positioned closer to / away from the first valve body 121, and moves downwards to contact the base frame 11. Thus, when the second valve body 122 moves, it contacts the base frame 11 downwards, thereby being supported and limited by the base frame 11. This results in relatively high stability and reliability of the second valve body 122 during movement.

[0038] Of course, it is understandable that if both the first valve body 121 and the second valve body 122 are movable, or only the first valve body 121 is movable, then both the first valve body 121 and the second valve body 122 may move downwards to contact the base frame 11, or only the first valve body 121 may move downwards to contact the base frame 11.

[0039] Optionally, the contact is a rolling contact. Therefore, the frictional force is small when the moving valve body contacts and moves with the base frame 11, which helps to reduce wear and loss.

[0040] Optionally, one of the first valve body 121 and / or the second valve body 122 and the base frame 11 is provided with a rolling element 1221, and the other is provided with a smoothing element 111 over which the rolling element 1221 rolls. In other words, one of the movable valve body and the base frame 11 is provided with a rolling element 1221, and the other is provided with a smoothing element 111 over which the rolling element 1221 rolls. Thus, when the valve body moves, the rolling element 1221 can roll smoothly on the smooth surface of the smoothing element 111, which is beneficial to the smooth rolling of the rolling element 1221.

[0041] For example, see Figure 2 The second valve body 122 is movably configured to move closer to / away from the first valve body 121. The base frame 11 is provided with a smoothing element 111 for rolling, and the bottom of the second valve body 122 is provided with a rolling element 1221 for rolling over the smoothing element 111 as the second valve body 122 moves. Alternatively, the base frame 11 may be provided with the rolling element 1221, and the second valve body 122 may be provided with the smoothing element 111.

[0042] Specifically, the rolling element 1221 is a roller for easy rolling. The smoothing element 111 is block-shaped, and the surface in contact with the rolling element 1221 is smooth.

[0043] Optionally, the valve housing 12 further includes a fixedly disposed third valve body 123 and a telescopic valve body 124 connected between the third valve body 123 and the second valve body 122 and capable of extension and retraction. Thus, when the blind valve is applied in actual working conditions, the first valve body 121 and the third valve body 123 can be fixedly connected to two external pipes respectively, thereby opening and closing the two external pipes. The telescopic valve body 124 can extend and retract to compensate for the movement of the second valve body 122, so that when the second valve body 122 moves, the position of the third valve body 123 and the external pipe connected to it can remain unchanged.

[0044] Optionally, see Figure 2 The base frame 11 is also provided with a first support leg 112 and a second support leg 113 spaced apart, for correspondingly and fixedly supporting the first valve body 121 and the third valve body 123.

[0045] The valve plate 13 is rotatably disposed between the first valve body 121 and the second valve body 122 to conduct / disconnect the first valve body 121 and the second valve body 122. The valve plate 13 is provided with an arc-shaped toothed portion 131. Specifically, the arc-shaped toothed portion 131 has its central axis on the rotation axis of the valve plate 13. For ease of understanding by those skilled in the art, Figure 1 The arcuate extension direction of the arcuate tooth 131 is simply shown, but it can be understood that... Figure 2 The specific tooth structure was not shown.

[0046] Figure 3 This is a schematic diagram of the blind valve according to an embodiment of the present disclosure from a second perspective. Figure 3 In the diagram, the solid line indicates that the valve plate 13 is in a blocking position, separating the first valve body 121 and the second valve body 122. The dashed line indicates that the valve plate 13 is in a conducting position, connecting the first valve body 121 and the second valve body 122.

[0047] The valve plate 13 is provided with a through hole 132 for connecting the first valve body 121 and the second valve body 122, and a blind hole 133 for isolating the first valve body 121 and the second valve body 122. In other words, during the flipping process of the valve plate 13, when the through hole 132 of the valve plate 13 is located between the first valve body 121 and the second valve body 122, the first valve body 121 and the second valve body 122 are connected. When the blind hole 133 of the valve plate 13 is located between the first valve body 121 and the second valve body 122, the first valve body 121 and the second valve body 122 are isolated, thereby enabling the valve plate 13 to both connect and disconnect the first valve body 121 and the second valve body 122.

[0048] Optionally, the valve plate 13 is also provided with a weight-reducing hole 134 to reduce weight and facilitate being driven to flip.

[0049] The valve plate drive mechanism 14 includes a valve plate drive member 141 and a transmission wheel 142. The transmission wheel 142 meshes with the arc-shaped toothed portion 131, and the valve plate drive member 141 is connected to the transmission wheel 142 to drive the transmission wheel 142 to rotate, thereby causing the valve plate 13 to flip.

[0050] Therefore, when the valve plate 13 is driven to rotate, the valve plate drive member 141 drives the transmission wheel 142 to rotate. The rotation of the transmission wheel 142 drives the arc-shaped toothed portion 131, which meshes with it, to rotate. The rotation of the arc-shaped toothed portion 131 drives the valve plate 13 to rotate around its rotation axis, thereby achieving the driving of the valve plate 13. In the above process, since the valve plate 13 is driven by teeth, the reliability and stability of the tooth-driven method are high. Therefore, the stability and reliability of the valve plate 13 when driven to rotate in this embodiment of the present disclosure are also relatively high.

[0051] Optionally, the transmission wheel 142 can be a transmission gear. The arc-shaped toothed portion 131 is fixed to the valve plate 13 and is an arc-shaped rack that meshes with the transmission gear. Thus, the transmission gear and the arc-shaped rack have high transmission accuracy, strong transmission reliability and stability, which helps to ensure the stability and reliability of the valve plate 13 when it is driven to flip.

[0052] Optionally, the valve plate drive 141 includes a valve plate drive motor. The valve plate drive motor is connected to the transmission wheel 142 to drive the transmission wheel 142 to rotate. Specifically, the valve plate drive 141 can be an existing electric rotary actuator, such as an electric rotary actuator with a handwheel.

[0053] Optionally, see Figure 1 and Figure 2The blind valve further includes a clamping drive mechanism 15. The clamping drive mechanism 15 is used to drive the first valve body 121 and / or the second valve body 122 to move closer to / away from the valve plate 13, so that the first valve body 121 and the second valve body 122 cooperate to clamp / release the valve plate 13. Thus, when the valve plate 13 blocks / connects the first valve body 121 and the second valve body 122, the first valve body 121 and the second valve body 122 will move closer to and cooperate to clamp the valve plate 13, so that the valve plate 13 can be relatively stably maintained in the connected position and the blocked position. When the valve plate 13 needs to rotate to switch positions, the first valve body 121 and the second valve body 122 will move away from and release the valve plate 13, so that the valve plate 13 can be easily driven to rotate.

[0054] Specifically, when the first valve body 121 is fixedly installed and the second valve body 122 is movably installed, the clamping drive mechanism 15 is used to drive the second valve body 122 to move, thereby causing the second valve body 122 to move closer to / away from the first valve body 121, and then clamp / release the valve plate 13.

[0055] Specifically, the clamping drive mechanism 15 includes multiple lead screws 151, clamping drive components 152, and synchronous drive components 153.

[0056] In this configuration, multiple lead screws 151 pass through the first valve body 121 and are threaded into the interior of the second valve body 122. The clamping drive 152 is connected to one of the lead screws 151 and drives the lead screw 151 to rotate. The synchronous drive assembly 153 is connected among the multiple lead screws 151 and drives the other lead screws 151 to rotate synchronously when one lead screw 151 rotates, thereby driving the second valve body 122 and the first valve body 121 to move closer to / away from each other to clamp / release the valve plate 13.

[0057] For example, such as Figure 2 As shown, the first valve body 121 is fixedly installed, and the second valve body 122 is movable. There are three lead screws 151, including a first lead screw 151a, a second lead screw 151b, and a third lead screw 151 (not shown in the figure). The three lead screws 151 are arranged in a triangle and all pass through the first valve body 121 and are threaded into the second valve body 122. When the clamping drive member 152 drives one of the lead screws 151 to rotate, the synchronous drive component 153 drives the other two lead screws 151 to rotate. The rotation of the three lead screws 151 drives the second valve body 122, which is threaded into it, to move, thereby driving the second valve body 122 to move closer to / away from the first valve body 121, thereby cooperating with the first valve body 121 to clamp / release the valve plate 13.

[0058] Optionally, the clamping drive 151 includes a clamping drive motor for connection to one of the lead screws 151 (second lead screw 151b) to drive one of the lead screws 151 to rotate. Specifically, the clamping drive 151 can be an existing electric rotary actuator, such as an electric rotary actuator with a handwheel.

[0059] Optionally, the synchronous drive assembly 153 includes a plurality of synchronous rotating members 1531 and a synchronous belt 1532. The plurality of synchronous rotating members 1531 are fixedly connected to the plurality of lead screws 151 in a one-to-one correspondence. The synchronous belt 1532 is sleeved on the outside of the plurality of synchronous rotating members 1531, so that when one of the synchronous rotating members 1531 is driven to rotate by its corresponding lead screw 151, it drives the other synchronous rotating members 1531 to rotate synchronously, thereby driving the other lead screws 151 to rotate, and thus causing the plurality of lead screws 151 to rotate synchronously.

[0060] Specifically, the plurality of synchronous rotating components 1531 are implemented as three synchronous pulleys, including a first synchronous pulley 1531a, a second synchronous pulley 1531b, and a third synchronous pulley 1531c. The three synchronous pulleys are correspondingly fixed to the outside of the three lead screws 151. The synchronous belt 1532 is implemented as a synchronous belt 1532 sleeved on the outside of the three synchronous pulleys.

[0061] Specifically, the timing pulley can be a sprocket, and the timing belt 1532 can be a chain that is sleeved on the outside of the multiple sprockets and meshes with the multiple sprockets.

[0062] 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 blind valve, characterized in that, include: Base frame; The valve housing includes: a first valve body and a second valve body, which are disposed above the base frame and are movably positioned close to / away from the base frame; wherein the first valve body and / or the second valve body moves downward in contact with the base frame. A valve plate is rotatably disposed between the first valve body and the second valve body to conduct / disconnect the first valve body and the second valve body; wherein, the valve plate is provided with an arc-shaped toothed portion; The valve plate drive mechanism includes a valve plate drive component and a transmission wheel. The transmission wheel meshes with the arc-shaped toothed portion. The valve plate drive component is connected to the transmission wheel to drive the transmission wheel to rotate, thereby causing the valve plate to flip.

2. The blind valve according to claim 1, characterized in that, The contact is a rolling contact.

3. The blind valve according to claim 1, characterized in that, One of the first valve body and / or the second valve body and the base frame is provided with a rolling element, and the other is provided with a smooth element through which the rolling element rolls.

4. The blind valve according to claim 1, characterized in that, The transmission wheel is a transmission gear, and the arc-shaped toothed part is an arc-shaped rack that meshes with the transmission gear.

5. The blind valve according to claim 1, characterized in that, The valve plate is provided with at least one relief hole.

6. The blind valve according to claim 1, characterized in that, It also includes a clamping drive mechanism, including: Multiple lead screws pass through the first valve body and are threaded into the inside of the second valve body; Clamping drive for driving one of the lead screws to rotate; and A synchronous drive assembly, connected between the plurality of said lead screws, is used to drive the other said lead screws to rotate synchronously when one of said lead screws rotates, so as to drive the second valve body and the first valve body to move closer to / away from each other to clamp / release the valve plate.

7. The blind valve according to claim 6, characterized in that, The synchronous drive component includes: Multiple synchronous rotating components are fixed to multiple lead screws in a one-to-one correspondence; A timing belt is fitted over the outside of the plurality of synchronous rotating components.

8. The blind valve according to claim 1, characterized in that, The first valve body is fixedly installed, and the second valve body is movable relative to the first valve body, positioned closer to or further away from it. The valve housing further includes: a fixedly disposed third valve body and a telescopic valve body connected between the third valve body and the second valve body and capable of telescopic movement.

9. The blind valve according to claim 8, characterized in that, The base frame is also provided with a first support leg and a second support leg that support the first valve body and the third valve body respectively.

10. The blind valve according to claim 1, characterized in that, The valve plate is provided with a through hole for connecting the first valve body and the second valve body and a blind hole for separating the first valve body and the second valve body.

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