Raw ductile iron flange rubber lining butterfly valve

Abstract

The utility model provides an original ductile iron flange rubber lining butterfly valve, which relates to the technical field of butterfly valves, and comprises a butterfly valve, a left flange structure and a right flange structure, an upper sealing seat is sleeved on the upper part of the outer ring surface of the butterfly valve, a lower sealing seat is sleeved on the lower part of the outer ring surface of the butterfly valve, and a valve plate is movably arranged in the center in the butterfly valve in an overturning manner. A left flange structure is installed on the left side of the butterfly valve, a right flange structure is installed on the right side of the butterfly valve, the left flange structure and the right flange structure are in bilateral symmetry about the center line of the butterfly valve, the left flange structure and the right flange structure are detachably connected with the butterfly valve, and multiple sets of first side connecting plates are arranged on the left side and the right side of the butterfly valve correspondingly. And a second side connecting plate is arranged on the left side of the right flange structure. The valve plate is stable, firm, tight and firm to open and close, the valve body and the flange structures on the two sides are installed in a sleeved mode, installation is firm, leakage is avoided, and safety and reliability are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of butterfly valves, and particularly relates to a Liaoyuan ductile iron flange rubber-lined butterfly valve. Background Technique

[0002] The butterfly valve has a simple structure, small size and light weight. It consists of only a few parts and can be quickly opened and closed by rotating only 90°. The operation is simple. At the same time, the valve has good fluid control characteristics. The butterfly plate of the butterfly valve is installed in the diameter direction of the pipeline. In the cylindrical channel of the butterfly valve body, the disc-shaped butterfly plate rotates around the axis. When the flange butterfly valve is in the fully open position, the thickness of the butterfly plate is the only resistance when the medium flows through the valve body.

[0003] In the specification of a flange rubber-lined butterfly valve in the prior art (publication number CN216242372U), it is mentioned that "connection flanges are installed at both ends of the valve body. The connection flanges are internally provided with threaded holes at equal intervals and there are multiple threaded holes. A sealing mechanism is installed on the surface of the connection flange away from the valve body side. The sealing mechanism includes sealing ring A, sealing ring, sealing ring B, connecting rubber ring and threaded groove A. A sealing ring is installed on the surface of the connection flange away from the valve body side. Sealing rings B are integrally formed at the central positions on both sides of the surface of the sealing ring. Connecting rubber rings are installed at positions close to the circumference on both sides of the surface of the sealing ring and there are multiple connecting rubber rings. Threaded groove A is provided inside the connecting rubber ring", but in the prior art, the flange is connected by embedding the connecting rubber ring, and the gap between the flange and the valve body is prone to medium leakage, the connection is not tight, and the use is not safe and reliable. Content of the Utility Model

[0004] In order to overcome the defects existing in the prior art, a Liaoyuan ductile iron flange rubber-lined butterfly valve is provided to solve the problems that in the prior art, the flange is connected by embedding the connecting rubber ring, the gap between the flange and the valve body is prone to medium leakage, the connection is not tight, and the use is not safe and reliable.

[0005] To achieve the above object, a Liaoyuan ductile iron flange rubber-lined butterfly valve is provided, which includes a butterfly valve, a left flange structure and a right flange structure. An upper sealing seat is sleeved on the upper part of the outer ring surface of the butterfly valve, and a lower sealing seat is sleeved on the lower part of the outer ring surface of the butterfly valve. A valve plate is reversibly and movably arranged at the center inside the butterfly valve. A left flange structure is installed on the left side of the butterfly valve, and a right flange structure is installed on the right side of the butterfly valve. The left flange structure and the right flange structure are symmetric about the center line of the butterfly valve, and both the left flange structure and the right flange structure are detachably connected to the butterfly valve.

[0006] Further, a protective cover is arranged at the upper end of the upper sealing seat. A valve rod is sleeved inside the protective cover, and the upper end of the valve rod is installed in an electric control structure.

[0007] Further, multiple groups of first side connection plates are provided on both the left and right sides of the butterfly valve, and a second side connection plate is provided on the left side of the right flange structure, and fastening bolts are installed between the first side connection plate and the second side connection plate that are aligned left and right.

[0008] Further, a central sleeve is provided at the center of the valve plate, and the lower part of the valve stem is fixed in the central sleeve, and both the valve stem and the valve plate are located at the central position inside the butterfly valve.

[0009] Further, an inner strengthening edge is provided on the outer side of the valve plate, and the inner strengthening edge is made of carbon steel, and an anti-leakage outer edge is provided on the outer side of the inner strengthening edge, and the anti-leakage outer edge is made of rubber.

[0010] Further, an anti-wear surface layer is provided on the outer side surface of the right flange structure, and an outer sleeve is provided on the left side of the right flange structure. The outer sleeve is sleeved outside the right part of the butterfly valve, and both the right flange structure and the left flange structure are made of Liaoyuan ductile iron.

[0011] The beneficial effects of the present utility model are as follows:

[0012] 1. The structure of the valve plate of the present utility model is set to be strong and impact-resistant, and the inner strengthening edge strengthens the edge strength, and the setting of the anti-leakage outer edge avoids medium leakage, making it safer and more durable.

[0013] 2. The materials selected for the left flange structure and the right flange structure of the present utility model are stable and wear-resistant, and the left flange structure and the right flange structure are convenient for assembly or disassembly, so as to carry out internal maintenance of the butterfly valve, or replace the left flange structure and the right flange structure, which is more flexible and practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a front view schematic diagram of an embodiment of the present utility model;

[0015] Figure 2 is a right view schematic diagram of an embodiment of the present utility model;

[0016] Figure 3 is a sectional view schematic diagram of an embodiment of the present utility model;

[0017] Figure 4 is a schematic diagram of the right flange structure of an embodiment of the present utility model.

[0018] In the figure: 1, butterfly valve; 10, lower seal seat; 11, upper seal seat; 12, first side connection plate; 13, fastening bolt; 14, protective cover; 15, valve stem; 16, electric control structure; 2, left flange structure; 3, right flange structure; 30, second side connection plate; 31, outer sleeve; 32, anti-wear surface layer; 4, valve plate; 40, inner strengthening edge; 41, anti-leakage outer edge; 42, central sleeve. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present utility model clearer and more understandable, the present utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments. The specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model. Specific details such as specific system structures and technologies are proposed to more thoroughly understand the embodiments of the present utility model. The described embodiments are part of the embodiments of the present disclosure, rather than all of the embodiments. However, those skilled in the art should clearly understand that the present utility model can also be implemented in other embodiments without these specific details. Based on the embodiments in the present disclosure, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of protection of the present disclosure.

[0020] The following will describe in detail the specific implementation manners of the present utility model in conjunction with the accompanying drawings.

[0021] Figure 1 is the front view schematic diagram of the embodiment of the present utility model, Figure 2 is the right view schematic diagram of the embodiment of the present utility model, Figure 3 is the cross-sectional schematic diagram of the embodiment of the present utility model and Figure 4 is the right flange structure schematic diagram of the embodiment of the present utility model.

[0022] Referring to Figures 1 to 4 as shown, the present utility model provides a Liaoyuan ductile iron flange rubber-lined butterfly valve, which includes a butterfly valve 1, a left flange structure 2 and a right flange structure 3. An upper seal seat 11 is sleeved on the upper part of the outer ring surface of the butterfly valve 1, and a lower seal seat 10 is sleeved on the lower part of the outer ring surface of the butterfly valve 1. A valve plate 4 is rotatably and movably arranged in the center of the butterfly valve 1. A left flange structure 2 is installed on the left side of the butterfly valve 1, and a right flange structure 3 is installed on the right side of the butterfly valve 1. The left flange structure 2 and the right flange structure 3 are symmetric about the center line of the butterfly valve 1, and both the left flange structure 2 and the right flange structure 3 are detachably connected to the butterfly valve 1.

[0023] In this embodiment, a center sleeve 42 is provided at the center of the valve plate 4, the lower part of the valve stem 15 is fixed in the center sleeve 42, and both the valve stem 15 and the valve plate 4 are located at the center position inside the butterfly valve 1; an inner strengthening edge 40 is provided on the outer side of the valve plate 4, the inner strengthening edge 40 is made of carbon steel material, and a leak-proof outer edge 41 is provided on the outer side of the inner strengthening edge 40, and the leak-proof outer edge 41 is made of rubber material.

[0024] As a preferred implementation manner, the structure of the valve plate 4 of the present utility model is set to be strong and impact-resistant. Moreover, the inner strengthening edge 40 strengthens the edge strength, and the setting of the leak-proof outer edge 41 avoids medium leakage, making it safer and more durable.

[0025] In this embodiment, an anti-wear surface layer 32 is provided on the outer side surface of the right flange structure 3, and an outer sleeve 31 is provided on the left side of the right flange structure 3. The outer sleeve 31 is sleeved outside the right part of the butterfly valve 1, and both the right flange structure 3 and the left flange structure 2 are made of Liaoyuan ductile iron material.

[0026] As a preferred embodiment, the left flange structure 2 and the right flange structure 3 of the present utility model are made of materials that are stable and wear-resistant, and the left flange structure 2 and the right flange structure 3 are convenient for assembly or disassembly, so as to perform internal maintenance on the butterfly valve 1, or replace the left flange structure 2 and the right flange structure 3, which is more flexible and practical.

[0027] The present utility model can effectively solve the problems in the prior art that the flange is connected by embedding a connecting rubber ring, and the gap between the flange and the valve body is prone to medium leakage, the connection is not tight, and the use is not safe and reliable. The valve plate of the present utility model opens and closes stably and firmly, and is tightly and firmly connected. The valve body and the two side flange structures are installed in a sleeved manner, which is not only firmly installed, but also avoids leakage and is safer and more reliable.

[0028] The above embodiments are used to explain the present utility model, rather than limiting the utility model. Any modifications and changes made to the present utility model within the spirit of the present utility model and the scope of the claimed rights shall be included in the protection scope of the present utility model.

Claims

1. A Liaoyuan ductile iron flange rubber-lined butterfly valve, characterized in that: It includes a butterfly valve (1), a left flange structure (2) and a right flange structure (3). An upper seal seat (11) is sleeved on the upper part of the outer ring surface of the butterfly valve (1), and a lower seal seat (10) is sleeved on the lower part of the outer ring surface of the butterfly valve (1). A valve plate (4) is reversibly and movably arranged at the center inside the butterfly valve (1). The left flange structure (2) is installed on the left side of the butterfly valve (1), and the right flange structure (3) is installed on the right side of the butterfly valve (1). The left flange structure (2) and the right flange structure (3) are symmetric about the center line of the butterfly valve (1), and both the left flange structure (2) and the right flange structure (3) are detachably connected to the butterfly valve (1).

2. The kind of Liaoyuan ductile iron flange rubber-lined butterfly valve according to claim 1, characterized in that, A protective cover (14) is arranged at the upper end of the upper seal seat (11). A valve rod (15) is sleeved inside the protective cover (14), and the upper end of the valve rod (15) is installed inside an electric control structure (16).

3. A Liaoyuan ductile iron flange rubber-lined butterfly valve according to claim 1, characterized in that, Multiple groups of first side connection plates (12) are arranged on both the left and right sides of the butterfly valve (1). A second side connection plate (30) is arranged on the left side of the right flange structure (3), and a fastening bolt (13) is installed between the first side connection plate (12) and the second side connection plate (30) that are aligned left and right.

4. A Liaoyuan ductile iron flange rubber-lined butterfly valve according to claim 1, characterized in that, A center sleeve (42) is arranged at the center of the valve plate (4). The lower part of the valve rod (15) is fixed inside the center sleeve (42), and both the valve rod (15) and the valve plate (4) are located at the center position inside the butterfly valve (1).

5. A Liaoyuan ductile iron flange rubber-lined butterfly valve according to claim 1, characterized in that, An inner reinforcing edge (40) is arranged on the outer side of the valve plate (4). The inner reinforcing edge (40) is made of carbon steel. An anti-leakage outer edge (41) is arranged on the outer side of the inner reinforcing edge (40), and the anti-leakage outer edge (41) is made of rubber.

6. The kind of Liaoyuan ductile iron flange rubber-lined butterfly valve according to claim 1, characterized in that, An anti-wear surface layer (32) is arranged on the outer side surface of the right flange structure (3). An outer sleeve (31) is arranged on the left side of the right flange structure (3). The outer sleeve (31) is sleeved on the right outer part of the butterfly valve (1), and both the right flange structure (3) and the left flange structure (2) are made of Liaoyuan ductile iron material.

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