High-precision butterfly valve plate structure

Abstract

The utility model discloses a high accuracy butterfly valve valve plate structure belongs to valve design and manufacturing field, a high accuracy butterfly valve valve plate structure, including the plate body mechanism, the inner end of plate body mechanism is connected with the installation mechanism through, the installation mechanism includes valve stem, the front end middle part of valve stem is provided with the hexagonal clamping block, the outer end front side of hexagonal clamping block is provided with the butt joint block, the front end middle part of hexagonal clamping block is fixedly connected with the adjusting lever, the upper end surface of adjusting lever is provided with the mark groove, this high accuracy butterfly valve valve plate structure sets up butt joint block and makes only with fixed angle butt joint between valve plate body and valve stem, makes valve stem and external executor connect after can through valve stem natural determination valve plate body's position and angle, improves the convenience when installing, sets up the sleeve and can limit the shift of valve stem, ensures that valve stem always rotates along the same coaxial heart, avoids because valve stem and shakes and leads to valve plate body sealing surface misplacement or opening control deviation, improves the regulation accuracy when using the device.

Description

Technical Field

[0001] This utility model relates to the field of valve design and manufacturing, and in particular to a high-precision butterfly valve plate structure. Background Technology

[0002] In the field of fluid transportation and control, butterfly valves are widely used in industries such as petrochemicals, energy, water treatment and high-end manufacturing due to their compact structure and convenient opening and closing. As the core component of butterfly valves to realize fluid cut-off and regulation functions, the valve plate's structural precision and performance directly determine the sealing reliability, flow control accuracy and long-term working condition adaptability of butterfly valves. Especially in high-pressure, strong corrosion, high temperature or high-precision scenarios with strict requirements for flow regulation repeatability, the technical requirements of the valve plate are even more stringent.

[0003] Existing butterfly valve plate structures typically employ a valve actuator for precise control. This actuator, driven by power and with a precise adjustment mechanism, controls the valve plate's opening degree, opening and closing speed, and position. During installation, the valve plate is usually placed within the circular opening inside the valve body, then the valve stem is connected, and the valve actuator is attached to the stem. However, during installation, determining the initial relative position of the valve stem and valve plate is crucial. Traditional valve stems and plates can be freely aligned at angles, making it difficult to determine the exact angle between them, thus causing installation inconvenience. Therefore, we propose a high-precision butterfly valve plate structure. Utility Model Content

[0004] In order to overcome the shortcomings of the existing technology, the purpose of this utility model is to provide a high-precision butterfly valve plate structure. By setting a docking block and a docking groove, the valve plate and the valve stem can only be docked at a fixed angle. After the valve stem is connected to the actuator, the position and angle of the valve plate can be naturally determined by the valve stem, which improves the convenience of installation.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0006] A high-precision butterfly valve plate structure includes a plate body mechanism, wherein an installation mechanism is connected through the inner end of the plate body mechanism.

[0007] The installation mechanism includes a valve stem with a hexagonal locking block at the center of its front end. A docking block is provided on the front side of the outer end of the hexagonal locking block. An adjusting rod is fixedly connected to the center of the front end of the hexagonal locking block. A marking groove is provided on the upper surface of the adjusting rod. By setting the docking block, the valve plate body and the valve stem can only be docked at a fixed angle. After the valve stem is connected to the external actuator, the position and angle of the valve plate body can be naturally determined by the valve stem, making it easier to install and debug, and improving the convenience of installation.

[0008] Furthermore, the plate mechanism includes a valve plate body, a sleeve is provided on the inner side of the valve plate body, a stiffening plate is fixedly installed on the outer end of the sleeve, a hexagonal groove is provided on the inner end of the valve plate body, and a mating groove is provided on the inner end side wall of the hexagonal groove. The hexagonal groove provides a fixed connection, so that the valve stem can drive the valve plate body to rotate.

[0009] Furthermore, the valve stem is movably nested inside the sleeve, and the valve stem is adapted to the sleeve. By setting the sleeve, the offset of the valve stem can be limited, ensuring that the valve stem always rotates along the coaxial axis, avoiding misalignment of the valve plate body sealing surface or deviation of opening control due to valve stem shaking, and improving the adjustment accuracy of the device during use.

[0010] Furthermore, the hexagonal locking block is movably nested inside the hexagonal groove. By setting the hexagonal locking block with a hexagonal structure, the hexagonal locking block and the inner wall of the hexagonal groove can form a surface-to-surface fit, completely restricting the circumferential relative sliding between the two and improving the adjustment accuracy when the valve stem adjusts the valve plate body.

[0011] Furthermore, the docking block has a semi-cylindrical structure and is located at the outer end of one of the six faces of the hexagonal card block.

[0012] Furthermore, the docking block is connected to the docking groove.

[0013] Furthermore, the marking groove has a circular opening structure, and the marking groove corresponds to the position of the docking block.

[0014] Furthermore, the number of stiffening plates is several, and the several stiffening plates are evenly arranged on the front side of the outer end of the valve plate body.

[0015] In summary, this utility model has the following beneficial effects:

[0016] 1. By setting a docking block, the valve plate body and the valve stem can only be docked at a fixed angle. After the valve stem is connected to the external actuator, the position and angle of the valve plate body can be naturally determined by the valve stem, which facilitates installation and debugging and improves the convenience of installation. By setting a hexagonal groove to provide a fixed connection, the valve stem can drive the valve plate body to rotate.

[0017] 2. By setting a sleeve, the offset of the valve stem can be limited, ensuring that the valve stem always rotates along the coaxial axis, avoiding misalignment of the valve plate sealing surface or deviation in opening control due to valve stem shaking, and improving the adjustment accuracy when the device is used. By setting a hexagonal locking block with a hexagonal structure, the hexagonal locking block can form a surface-to-surface fit with the inner wall of the hexagonal groove, completely limiting the circumferential relative sliding between the two, and improving the adjustment accuracy when the valve stem adjusts the valve plate body. Attached Figure Description

[0018] Figure 1This is a schematic diagram of the overall structure in this embodiment;

[0019] Figure 2 This is a three-dimensional structural diagram of the plate mechanism in this embodiment;

[0020] Figure 3 This is a three-dimensional structural diagram of the installation mechanism in this embodiment;

[0021] Figure 4 This is a partial three-dimensional structural diagram of the plate mechanism in this embodiment;

[0022] Figure 5 This is a schematic diagram of the overall planar structure in this embodiment.

[0023] In the figure, 1 is the plate mechanism; 101 is the valve plate body; 102 is the sleeve; 103 is the stiffening plate; 104 is the hexagonal groove; 105 is the docking groove; 2 is the installation mechanism; 201 is the valve stem; 202 is the hexagonal locking block; 203 is the docking block; 204 is the adjusting rod; and 205 is the marking groove. Detailed Implementation

[0024] The present invention will be further described in detail below with reference to the accompanying drawings.

[0025] Identical parts are indicated by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "up," and "down" used in the following description refer to directions in the accompanying drawings, while the terms "bottom surface," "top surface," "inner," and "outer" refer to directions toward or away from the geometric center of a specific part, respectively.

[0026] Reference Figure 1-5 As shown, a high-precision butterfly valve plate structure is provided in a preferred embodiment of the present invention, including a plate body mechanism 1, and an installation mechanism 2 is connected through the inner end of the plate body mechanism 1.

[0027] The mounting mechanism 2 includes a valve stem 201. A hexagonal locking block 202 is provided at the middle of the front end of the valve stem 201. A docking block 203 is provided on the front side of the outer end of the hexagonal locking block 202. An adjusting rod 204 is fixedly connected to the middle of the front end of the hexagonal locking block 202. A marking groove 205 is provided on the upper surface of the adjusting rod 204. The docking block 203 is a semi-cylindrical structure and is located at the outer end of one of the six faces of the hexagonal locking block 202. The docking block 203 is connected to the docking groove 105. The marking groove 205 is a circular opening structure and is positioned corresponding to the docking block 203. By setting the docking block 203, the valve plate body 101 and the valve stem 201 can only be docked at a fixed angle. After the valve stem 201 is connected to the external actuator, the position and angle of the valve plate body 101 can be naturally determined by the valve stem 201, making it easier to install and debug and improving the convenience of installation.

[0028] Reference Figure 1-5 As shown, the plate mechanism 1 includes a valve plate body 101. A sleeve 102 is provided on the inner side of the valve plate body 101. A stiffening plate 103 is fixedly installed on the outer end of the sleeve 102. A hexagonal groove 104 is provided on the inner end of the valve plate body 101. A mating groove 105 is provided on the inner end side wall of the hexagonal groove 104. There are several stiffening plates 103. Several stiffening plates 103 are evenly arranged on the front side of the outer end of the valve plate body 101. The hexagonal groove 104 provides a fixed connection, so that the valve stem 201 can drive the valve plate body 101 to rotate.

[0029] Reference Figure 1-4 As shown, the valve stem 201 is movably nested inside the sleeve 102. The valve stem 201 and the sleeve 102 are adapted to each other. By setting the sleeve 102, the offset of the valve stem 201 can be limited, ensuring that the valve stem 201 always rotates along the coaxial axis. This avoids misalignment of the sealing surface of the valve plate body 101 or deviation in opening control caused by the shaking of the valve stem 201, thereby improving the adjustment accuracy of the device during use.

[0030] Reference Figure 2-4 As shown, the hexagonal locking block 202 is movably nested in the inner end of the hexagonal groove 104. By setting the hexagonal locking block 202 with a hexagonal structure, the hexagonal locking block 202 and the inner wall of the hexagonal groove 104 can form a surface-to-surface fit, completely restricting the circumferential relative sliding between the two, and improving the adjustment accuracy of the valve stem 201 when adjusting the valve plate body 101.

[0031] Specific implementation process: During installation, the valve stem 201 is inserted through the sleeve 102, and the hexagonal locking block 202 is movably nested into the hexagonal groove 104. Simultaneously, ensure that the mating block 203 precisely aligns with the mating groove 105 on the inner wall of the hexagonal groove 104. Because the mating block 203 is a semi-cylinder and only matches specific sides of the hexagonal groove 104, it forces the valve stem 201 to align with the valve plate body 101 at a fixed angle, avoiding angular deviations during assembly. This allows the valve stem 201 to movably nest into the sleeve 102, utilizing the coaxiality of the sleeve 102. The constraint initially limits the radial offset of the valve stem 201, ensuring that the valve stem 201 and the rotation axis of the valve plate body 101 are aligned. By adjusting the marking groove 205 on the surface of the rod 204, the current angle between the valve stem 201 and the valve plate 101 can be quickly confirmed. The valve stem 201 can be directly connected to the external actuator without additional calibration of the valve plate 101 position. Due to the fixed angle design of the docking block 203, the initial posture of the valve plate body 101 can be naturally determined after the actuator is connected to the valve stem 201, greatly simplifying the installation and debugging steps.

[0032] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A high-precision butterfly valve plate structure, characterized in that: The device includes a plate body mechanism (1), and an installation mechanism (2) is connected through the inner end of the plate body mechanism (1). The installation mechanism (2) includes a valve stem (201), a hexagonal locking block (202) is provided at the middle of the front end of the valve stem (201), a docking block (203) is provided on the front side of the outer end of the hexagonal locking block (202), an adjusting rod (204) is fixedly connected at the middle of the front end of the hexagonal locking block (202), and a marking groove (205) is provided on the upper surface of the adjusting rod (204).

2. The high-precision butterfly valve plate structure according to claim 1, characterized in that: The plate mechanism (1) includes a valve plate body (101), a sleeve (102) is provided on the inner side of the valve plate body (101), a stiffening plate (103) is fixedly installed on the outer end of the sleeve (102), a hexagonal groove (104) is provided on the inner end of the valve plate body (101), and a mating groove (105) is provided on the inner end side wall of the hexagonal groove (104).

3. The high-precision butterfly valve plate structure according to claim 2, characterized in that: The valve stem (201) is movably nested inside the sleeve (102), and the valve stem (201) is adapted to the sleeve (102).

4. The high-precision butterfly valve plate structure according to claim 2, characterized in that: The hexagonal card block (202) is movably nested inside the hexagonal slot (104).

5. The high-precision butterfly valve plate structure according to claim 1, characterized in that: The docking block (203) is a semi-cylindrical structure, and the docking block (203) is located at the outer end of one of the six sides of the hexagonal card block (202).

6. The high-precision butterfly valve plate structure according to claim 2, characterized in that: The docking block (203) is connected to the docking groove (105).

7. The high-precision butterfly valve plate structure according to claim 1, characterized in that: The marking groove (205) is a circular opening structure, and the marking groove (205) corresponds to the position of the docking block (203).

8. The high-precision butterfly valve plate structure according to claim 2, characterized in that: The number of stiffening plates (103) is several, and the several stiffening plates (103) are evenly arranged on the front side of the outer end of the valve plate body (101).

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