Combined corrosion-resistant fluorine-lined butterfly valve

Abstract

The utility model relates to a combined corrosion-resistant fluorine lining butterfly valve which comprises a valve body, flange plates, a valve rod, a butterfly plate, a lining and sealing assemblies, the flange plates are symmetrically distributed on the valve body, the valve body is rotationally connected with the butterfly plate through the valve rod, the lining used for being connected with the butterfly plate in a sealed mode is clamped on the valve body, and the sealing assemblies distributed in a vertically symmetrical mode are arranged on the valve body. The lining is provided with a first clamping part used for positioning, and the first clamping part is clamped between the valve body and the flange plate. The main purpose of the utility model is that the bushing is provided with the first clamping part at the joint of the valve body and the flange plate, and the first clamping part is used as a fixing point, so that when the butterfly plate rotates, the torsion generated by the butterfly plate to the bushing acts on the first clamping part, thereby avoiding the deformation of the bushing in the valve body and keeping the stability of the structure.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to a combined corrosion-resistant fluorine-lined butterfly valve. Background Art

[0002] Fluorine-lined butterfly valve is a butterfly valve used for on-off control of low-pressure pipeline media. The flange-type fluorine-lined butterfly valve includes a valve body, a butterfly plate rotatably connected to the valve body, and a liner for isolating corrosive gases and liquid media. However, the liner of the traditional flange-type fluorine-lined butterfly valve has a long axial distance and fewer fixed points between the liner and the valve body. When the butterfly plate rotates, the butterfly plate rubs against the liner and generates torque on the liner, causing the liner to deform in the valve body, thereby affecting the sealing effect of the valve body. Utility Model Content

[0003] In order to overcome the shortcomings of the background technology, the technical solution adopted by the utility model is: a combined corrosion-resistant fluorine-lined butterfly valve, including a valve body, a flange, a valve stem, a butterfly plate, a bushing and a sealing assembly, the valve body is symmetrically distributed with flanges, the valve body is rotatably connected to the butterfly plate through the valve stem, and the valve body is clamped with a bushing for sealing the butterfly plate, the valve body is provided with sealing assemblies symmetrically distributed up and down, the bushing is provided with a first clamping portion for positioning, and the first clamping portion is clamped between the valve body and the flange.

[0004] By adopting the above technical scheme, the rotation of the butterfly plate is controlled by the valve stem, the bushing is used to improve the corrosion resistance of the butterfly plate, the sealing assembly is used to improve the sealing effect at the butterfly plate rotating shaft, the bushing is connected to the valve body and the flange at the same time, and the bushing is provided with a first clamping portion at the connection between the valve body and the flange, and the first clamping portion is used as a fixed point. When the butterfly plate rotates, the torque generated by the butterfly plate on the bushing acts on the first clamping portion to avoid deformation of the bushing in the valve body to maintain the stability of the structure.

[0005] The utility model is further configured that positioning grooves are provided at both ends of the valve body, the flange is provided with positioning parts matched with the positioning grooves, and the valve body and the flange are combined to form a clamping groove matched with the first clamping part.

[0006] Furthermore, the bushing is provided with a central portion and second clamping portions provided at both ends of the central portion, the central portion is provided between the sealing assembly and the butterfly plate, the second clamping portion extends to the flange, and the first clamping portion is provided between the central portion and the second clamping portion.

[0007] Furthermore, the first clamping portion is provided with symmetrically distributed protrusions.

[0008] By adopting the above technical solution, the bushing is provided with three fixing points from the inside to the outside, namely a center part, a first clamping part and a second clamping part, wherein the center part is clamped between the butterfly plate and the sealing assembly to seal the gap at the turning point of the butterfly plate; the first clamping part is clamped in the clamping groove through a protrusion, which increases the fixing points of the bushing and makes the valve body and the flange disk sealed and connected, thereby improving the sealing effect of the butterfly valve; the second clamping part abuts against the outer surface of the flange disk and is used for the butterfly valve to seal other external pipelines.

[0009] The utility model is further configured that the sealing assembly includes a base, a spring washer and a top ring, the valve body is clamped with the base, the base is connected to the top ring through the spring washer, and one end of the top ring abuts against the central portion.

[0010] By adopting the above technical solution, the top ring is slidably connected to the valve body, and the spring washer is always in a compressed state. The spring washer always applies a force to the top ring toward the bushing, and the top ring squeezes the bushing toward the butterfly plate, thereby improving the sealing effect at the turning point of the valve stem.

[0011] The utility model is further configured that the valve body is provided with threaded holes distributed in a circumference around the positioning groove, and the flange is provided with countersunk holes corresponding to the threaded holes.

[0012] Furthermore, the flange is provided with mounting holes that are staggered with the countersunk holes.

[0013] By adopting the above technical solution, the flange is provided with six groups of countersunk holes and mounting holes, and the countersunk holes and mounting holes are rotated and staggered. The flange is installed on both ends of the valve through the countersunk holes, and other pipelines are connected to the outside through the mounting holes. The structural design is compact and reasonable.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] The bushing is provided with a first clamping portion at the connection between the valve body and the flange, and the first clamping portion is used as a fixed point. When the butterfly plate rotates, the torque generated by the butterfly plate on the bushing acts on the first clamping portion to avoid deformation of the bushing in the valve body, so as to maintain the stability of the structure.

[0016] The embodiments of the utility model are further described below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is the front view of the utility model;

[0018] Figure 2 For the utility model Figure 1 Sectional view of the A direction view;

[0019] Figure 3 For the utility model Figure 2 A partial enlarged view of the B direction view;

[0020] Wherein: 1 - valve body, 11 - positioning groove, 12 - clamping groove, 13 - threaded hole, 2 - flange, 21 - positioning part, 22 - countersunk hole, 23 - mounting hole, 3 - valve stem, 4 - butterfly plate, 5 - bushing, 51 - center part, 52 - first clamping part, 53 - second clamping part, 54 - bump, 6 - sealing assembly, 61 - base, 62 - spring washer, 63 - top ring; DETAILED DESCRIPTION

[0021] like Figure 1 , 2 As shown, this embodiment provides a combined corrosion-resistant fluorine-lined butterfly valve, including a valve body 1, a flange 2, a valve stem 3, a butterfly plate 4, a bushing 5 and a sealing assembly 6. The valve body 1 is symmetrically provided with flanges 2, the valve body 1 is rotatably connected to the butterfly plate 4 through the valve stem 3, and the valve body 1 is clamped with a bushing 5 for sealingly connecting the butterfly plate 4, the valve body 1 is provided with a sealing assembly 6 symmetrically distributed up and down, the bushing 5 is provided with a first clamping portion 52 for positioning, and the first clamping portion 52 is clamped between the valve body 1 and the flange 2, the rotation of the butterfly plate 4 is controlled by the valve stem 3, the bushing 5 is used to improve the corrosion resistance of the butterfly plate 4, the sealing assembly 6 is used to improve the sealing effect at the rotating shaft of the butterfly plate 4, the bushing 5 is connected to the valve body 1 and the flange 2 at the same time, and an additional fixed point is added to the middle part of the bushing through the first clamping portion 52 to avoid deformation of the bushing in the valve body 1, and is suitable for a butterfly valve structure with a longer axial direction.

[0022] Combination Figure 3 As shown, in this embodiment, both ends of the valve body 1 are provided with positioning grooves 11, the flange 2 is provided with a positioning portion 21 adapted to the positioning groove 11, the valve body 1 and the flange 2 are combined to form a clamping groove 12 adapted to the first clamping portion 52, the bushing 5 is provided with a central portion 51, and second clamping portions 53 provided at both ends of the central portion 51, the central portion 51 is provided between the sealing assembly 6 and the butterfly plate 4, the second clamping portion 53 extends to the flange 2, the first clamping portion 52 is provided between the central portion 51 and the second clamping portion 53, and the first clamping portion 52 is provided with a pair of The bushing 5 has three fixed points from the inside to the outside, namely a central portion 51, a first clamping portion 52 and a second clamping portion 53, wherein the central portion 51 is clamped between the butterfly plate 4 and the sealing assembly 6 to seal the gap at the turning point of the butterfly plate 4; the first clamping portion 52 is clamped in the clamping groove 12 through the protrusion 54, which increases the fixing points of the bushing 5 and makes the valve body 1 and the flange 2 sealed and connected, thereby improving the sealing effect of the butterfly valve; the second clamping portion 53 abuts against the outer surface of the flange 2 to seal the butterfly valve to other external pipelines.

[0023] In this embodiment, the sealing assembly 6 includes a base 61, a spring washer 62 and a top ring 63. The valve body 1 is clamped with the base 61, and the base 61 is connected to the top ring 63 through the spring washer 62. One end of the top ring 63 abuts against the center portion 51. The top ring 63 is slidably connected to the valve body 1. The spring washer 62 is always in a compressed state. The spring washer 62 always applies a force to the top ring 63 toward the bushing 5. The top ring 63 squeezes the bushing 5 toward the butterfly plate 4, thereby improving the sealing effect at the turning point of the valve stem 3.

[0024] In this embodiment, the valve body 1 is provided with threaded holes 13 distributed in a circular pattern around the positioning groove 11, the flange 2 is provided with countersunk holes 22 corresponding to the threaded holes 13, the flange 2 is provided with mounting holes 23 staggered with the countersunk holes 22, the flange 2 is provided with six groups of countersunk holes 22 and mounting holes 23, and the countersunk holes 22 and the mounting holes 23 are rotationally staggered. The flange 2 is installed at both ends of the valve through the countersunk holes 22, and is externally connected to other pipelines through the mounting holes 23. The structural design is compact and reasonable.

[0025] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A combined corrosion-resistant fluorine-lined butterfly valve, characterized in that: The valve body (1) comprises a valve body (1), a flange (2), a valve stem (3), a butterfly plate (4), a bushing (5) and a sealing assembly (6); the valve body (1) is symmetrically provided with the flange (2); the valve body (1) is rotatably connected with the butterfly plate (4) via the valve stem (3); the valve body (1) is clamped with a bushing (5) for sealingly connecting the butterfly plate (4); the valve body (1) is provided with a sealing assembly (6) symmetrically distributed up and down; the bushing (5) is provided with a first clamping portion (52) for positioning; and the first clamping portion (52) is clamped between the valve body (1) and the flange (2).

2. A combined corrosion-resistant fluorine-lined butterfly valve according to claim 1, characterized in that: The valve body (1) is provided with positioning grooves (11) at both ends, the flange (2) is provided with a positioning portion (21) matched with the positioning groove (11), and the valve body (1) and the flange (2) are combined to form a clamping groove (12) matched with the first clamping portion (52).

3. A combined corrosion-resistant fluorine-lined butterfly valve according to claim 2, characterized in that: The bushing (5) is provided with a central portion (51) and second clamping portions (53) provided at both ends of the central portion (51); the central portion (51) is provided between the sealing assembly (6) and the butterfly plate (4); the second clamping portion (53) extends to the flange (2); and the first clamping portion (52) is provided between the central portion (51) and the second clamping portion (53).

4. A combined corrosion-resistant fluorine-lined butterfly valve according to claim 3, characterized in that: The first clamping portion (52) is provided with symmetrically distributed protrusions (54).

5. The combined corrosion-resistant fluorine-lined butterfly valve according to claim 3 is characterized by: The sealing assembly (6) comprises a base (61), a spring washer (62) and a top ring (63); the valve body (1) is clamped with the base (61); the base (61) is connected to the top ring (63) via the spring washer (62), and the top ring (63) abuts against the central portion (51).

6. A combined corrosion-resistant fluorine-lined butterfly valve according to claim 2, characterized in that: The valve body (1) is provided with threaded holes (13) distributed in a circumferential manner around the positioning groove (11), and the flange (2) is provided with countersunk holes (22) corresponding to the threaded holes (13).

7. A combined corrosion-resistant fluorine-lined butterfly valve according to claim 6, characterized in that: The flange (2) is provided with mounting holes (23) which are distributed alternately with the countersunk holes (22).

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