Fluorine-lined butterfly valve with detachable butterfly plate

Abstract

The utility model provides a butterfly plate detachable fluorine lining butterfly valve which comprises an upper valve body and a lower valve body, a fluorine lining valve seat is fixedly installed between the upper valve body and the lower valve body, the upper valve body and the lower valve body are fixedly connected through a first bolt, and a valve plate is rotatably installed in the fluorine lining valve seat. By means of the integral arrangement, when the valve plate is rotated, the contact area between the valve plate and the fluorine lining valve seat and the contact area between the valve plate and a conveying medium can be reduced, and therefore abrasion of the valve plate is reduced. Meanwhile, when the sealing between the valve plate and the fluorine lining valve seat is not tight, the valve plate and the fluorine lining valve seat can be integrally replaced, and when the valve plate is good, the fluorine lining plate can be independently replaced, so that the waste of the valve plate is reduced.

Description

Technical Field

[0001] The utility model belongs to the field of butterfly valves, and in particular relates to a fluorine-lined butterfly valve with a detachable butterfly plate. Background Art

[0002] Fluorine-lined butterfly valves and rubber-lined butterfly valves are components used to realize the on-off and flow control of pipeline systems. They have been widely used in many fields such as petroleum, chemical industry, metallurgy, hydropower, etc. In the known butterfly valve technology, the sealing form mostly adopts a sealing structure, and the sealing materials are rubber, polytetrafluoroethylene, etc. Due to the limitations of structural characteristics, it is not suitable for industries such as high temperature resistance, high pressure resistance, corrosion resistance, and wear resistance. An advanced butterfly valve is a three-eccentric metal hard-sealed butterfly valve. The valve body and valve seat are connected components, and the valve seat sealing surface layer is welded with heat-resistant and corrosion-resistant alloy materials. The multi-layer soft stacking sealing ring is fixed on the valve plate. Compared with the traditional butterfly valve, this butterfly valve has the advantages of high temperature resistance, easy operation, no friction when opening and closing, and the sealing is compensated as the torque of the transmission mechanism increases when closing, which improves the sealing performance of the butterfly valve and extends its service life. This type of valve should generally be installed horizontally in the pipeline.

[0003] However, the existing fluorine-lined butterfly valve with detachable butterfly plate will experience corresponding wear during the opening and closing process. The main worn parts are the contact parts between the butterfly plate and the valve seat. When wear occurs, it will lead to poor sealing and the entire butterfly plate needs to be replaced. In this way, other good parts of the butterfly plate will be wasted.

[0004] Therefore, it is very necessary to invent a fluorine-lined butterfly valve with a detachable butterfly plate. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a fluorine-lined butterfly valve with a detachable butterfly plate, which adopts the following technical solutions: a fluorine-lined butterfly valve with a detachable butterfly plate, comprising an upper valve body and a lower valve body, wherein: a fluorine-lined valve seat is fixedly installed between the upper valve body and the lower valve body, and the upper valve body and the lower valve body are fixedly connected by bolts, and a valve plate is rotatably installed in the fluorine-lined valve seat;

[0006] Preferably, the circumference of the valve plate is evenly and fixedly mounted with valve stems and rotating shafts, and the valve stems and rotating shafts are arranged in mirror-image positions with the valve plate as the center; the top end of the valve stem rotates and extends out from the fluorine-lined valve seat and the valve stem seat of the upper valve body; the rotating shaft rotates and passes through the fluorine-lined valve seat and is rotatably connected with the lower valve body; a packing gland is fixedly mounted between the valve stem and the valve stem seat;

[0007] Preferably, a fluorine-lined plate is fixedly mounted on both sides of the valve plate by bolts, and the size of the fluorine-lined plate matches the size of the valve plate.

[0008] Preferably, installation cavities matching the fluorine-lined valve seat are respectively formed inside the upper valve body and the lower valve body, and the fluorine-lined valve seat is installed in the installation cavities inside the upper valve body and the lower valve body.

[0009] Preferably, through holes corresponding to the valve stem and the rotating shaft are formed through the circumferential surface of the fluorine-lined valve seat, and the valve stem and the rotating shaft are rotatably installed in the corresponding through holes.

[0010] Preferably, threaded holes are respectively formed at the centers of both sides of the valve plate, and the threaded holes are fixedly connected to the corresponding bolts.

[0011] Preferably, semi-circular protrusions corresponding to the shapes of the valve stem and the rotating shaft are arranged on the surface of the fluorine-lined plate, and a counterbore is formed through the center of the fluorine-lined plate; the semi-circular protrusions are in fit with the corresponding valve stem and rotating shaft; the bolts are fixedly installed in the corresponding counterbores.

[0012] Compared with the prior art, the advantages of the present utility model are as follows:

[0013] With the overall arrangement of the present utility model, when the valve plate is rotated, the contact area between the valve plate and the fluorine-lined valve seat and the conveyed medium can be reduced, thereby reducing the wear of the valve plate. At the same time, when the seal between the valve plate and the fluorine-lined valve seat is not tight, not only can the valve plate and the fluorine-lined valve seat be replaced as a whole, but also when the valve plate is in good condition, the fluorine-lined plate can be replaced separately, thereby reducing the waste of the valve plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is an overall exploded structural schematic diagram of the present utility model.

[0015] Figure 2 is a structural schematic diagram of the valve plate and the fluorine-lined plate of the present utility model.

[0016] Figure 3 is an overall structural schematic diagram of the present utility model.

[0017] In the figure:

[0018] upper valve body 1, lower valve body 2, first bolt 3, installation cavity 4, valve stem seat 5, fluorine-lined valve seat 6, through hole 7, valve plate 8, valve stem 9, rotating shaft 10, threaded hole 11, fluorine-lined plate 12, bolt 13, semi-circular protrusion 14, counterbore 15, packing gland 16. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] In order to enable those skilled in the art to better understand the solution of the present utility model, the technical solutions in the embodiments of the present utility model will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0020] In the description of the embodiments, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In the description of the utility model, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" 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 directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0021] The following further describes the present utility model with reference to the drawings:

[0022] Embodiment 1

[0023] Refer to Figures 1-3 , a butterfly plate detachable fluorine-lined butterfly valve, including an upper valve body 1 and a lower valve body 2, wherein: a fluorine-lined valve seat 6 is fixedly installed between the upper valve body 1 and the lower valve body 2, and the upper valve body 1 and the lower valve body 2 are fixedly connected by a first bolt 3. A valve plate 8 is rotatably installed in the fluorine-lined valve seat 6;

[0024] The circumferential surface of the valve plate 8 is uniformly and fixedly installed with a valve stem 9 and a rotating shaft 10, and the valve stem 9 and the rotating shaft 10 are arranged in a mirror image position centered on the valve plate 8; the top end of the valve stem 9 rotatably extends out of the fluorine-lined valve seat 6 and the valve stem seat 5 of the upper valve body 1. Through the arrangement of the valve stem 9, the rotation of the valve plate 8 can be controlled; the rotating shaft 10 rotatably passes through the fluorine-lined valve seat 6 and is rotatably connected to the lower valve body 2. Through the arrangement of the rotating shaft 10, the stability and smoothness of the valve plate 8 during the rotation process can be ensured; a packing gland 16 is fixedly installed between the valve stem 9 and the valve stem seat 5;

[0025] On both sides of the valve plate 8, fluorine-lined plates 12 are fixedly installed through bolts 13 respectively. Through the arrangement of the fluorine-lined plates 12, during the rotation of the valve plate 8, the contact area between the valve plate 8 and the fluorine-lined valve seat 6 and the conveyed medium can be reduced, thereby reducing the wear of the valve plate 8. At the same time, when the fluorine-lined plate 12 is worn, only the fluorine-lined plate 12 needs to be replaced separately, thereby reducing the waste of the material of the valve plate 8, and the size of the fluorine-lined plate 12 matches the size of the valve plate 8.

[0026] Threaded holes 11 are respectively provided at the centers of both sides of the valve plate 8, and the threaded holes 11 are fixedly connected to the corresponding bolts 13. Through the arrangement of the threaded holes 11 and the bolts 13, it is convenient to disassemble and assemble the valve plate 8 and the fluorine-lined plate 12, so as to replace the fluorine-lined plate 12 separately.

[0027] Semicircular protrusions 14 corresponding to the shapes of the valve stem 9 and the rotating shaft 10 are provided on the surface of the fluorine-lined plate 12. Through the arrangement of the semicircular protrusions 14, a better fit can be achieved between the fluorine-lined plate 12 and the valve stem 9 and the rotating shaft 10, thereby ensuring the sealing performance at the contact positions of the fluorine-lined plate 12 with the valve stem 9 and the rotating shaft 10. And a countersunk hole 15 is penetrated through the center of the fluorine-lined plate 12. Through the arrangement of the countersunk hole 15, it is convenient to disassemble and assemble the bolt 13. At the same time, the bolt 13 can be shielded, so that when conveying the medium, the contact area between the bolt 13 and the medium can be reduced, thereby ensuring the stability of the bolt 13; the semicircular protrusions 14 are fitted with the corresponding valve stem 9 and rotating shaft 10; the bolt 13 is fixedly connected to the threaded hole 11 through the corresponding countersunk hole 15.

[0028] Any technical solution using the technical solution of the present invention, or any technical solution designed by those skilled in the art inspired by the technical solution of the present invention and achieving the above technical effects shall fall within the protection scope of the present invention.

Claims

1. A fluorine-lined butterfly valve with a detachable butterfly plate, characterized in that: It comprises an upper valve body (1) and a lower valve body (2), wherein a fluorine-lined valve seat (6) is fixedly installed between the upper valve body (1) and the lower valve body (2), and the upper valve body (1) and the lower valve body (2) are fixedly connected by a bolt (3), and a valve plate (8) is rotatably installed in the fluorine-lined valve seat (6); The valve plate (8) is evenly and fixedly provided with valve stems (9) and rotating shafts (10); the top end of the valve stem (9) rotates and extends out from the fluorine-lined valve seat (6) and the valve stem seat (5) of the upper valve body (1); the rotating shaft (10) rotates and passes through the fluorine-lined valve seat (6) and is rotatably connected to the lower valve body (2); a packing gland (16) is fixedly provided between the valve stem (9) and the valve stem seat (5); A fluorine-lined plate (12) is fixedly mounted on both sides of the valve plate (8) via bolts (13).

2. A fluorine-lined butterfly valve with a detachable butterfly plate as claimed in claim 1, characterized in that: The upper valve body (1) and the lower valve body (2) are each provided with an installation cavity (4) matching the fluorine-lined valve seat (6), and the fluorine-lined valve seat (6) is installed in the installation cavity (4) inside the upper valve body (1) and the lower valve body (2).

3. A fluorine-lined butterfly valve with a detachable butterfly plate as claimed in claim 2, characterized in that: A through hole (7) corresponding to the valve stem (9) and the rotating shaft (10) is formed through the circumferential surface of the fluorine-lined valve seat (6), and the valve stem (9) and the rotating shaft (10) are rotatably mounted in the corresponding through holes (7).

4. A fluorine-lined butterfly valve with a detachable butterfly plate as claimed in claim 1, characterized in that: The valve plate (8) is provided with threaded holes (11) on both sides, and the threaded holes (11) are fixedly connected to corresponding bolts (13).

5. A fluorine-lined butterfly valve with a detachable butterfly plate as claimed in claim 4, characterized in that: The surface of the fluorine-lined plate (12) is provided with a semicircular protrusion (14) corresponding to the shape of the valve stem (9) and the rotating shaft (10), and a countersunk hole (15) is opened through the center of the fluorine-lined plate (12); the semicircular protrusion (14) fits with the corresponding valve stem (9) and the rotating shaft (10); and the bolt (13) is fixedly installed in the corresponding countersunk hole (15).

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