Bidirectional compression ship butterfly valve

Abstract

The utility model discloses a bidirectional compression ship butterfly valve which comprises a butterfly plate, a sealing plate and a valve body, the sealing plate is installed in an inner cavity of the valve body, and the butterfly plate is installed at the rear end of the sealing plate on the valve body through a connecting shaft. The first sealing ring is mounted in a first mounting groove in the butterfly plate and is used for sealing the sealing surface of the butterfly plate; the first sealing ring comprises a plurality of first sealing blocks, and the two ends of each first sealing block are provided with a first clamping block and a first clamping groove which correspond to each other, so that every two adjacent first sealing blocks are connected with the first clamping blocks in a clamped mode through the first clamping grooves and the first clamping grooves. According to the butterfly valve for the ship, a traditional integrated sealing ring on the butterfly valve for the ship is arranged to be of a split type structure, so that when a butterfly plate sealing ring on the butterfly valve and a sealing ring on a sealing plate are abraded, only a sealing block at the abraded position needs to be replaced, overall replacement is not needed, and then resource waste is reduced.

Description

Technical Field

[0001] This utility model relates to the field of marine butterfly valve technology, specifically to a bidirectional pressure-bearing marine butterfly valve. Background Technology

[0002] A butterfly valve, also known as a flap valve, is a simple regulating valve used for on / off control of low-pressure pipeline media. A butterfly valve is characterized by its closing element (valve disc or butterfly plate) being a disk that rotates around a valve shaft to open and close. Valves can be used to control the flow of various types of fluids, including air, water, steam, various corrosive media, slurry, oil, liquid metals, and radioactive media. In pipelines, they primarily function as shut-off and throttling devices. The butterfly valve's opening and closing element is a disc-shaped butterfly plate that rotates around its own axis within the valve body, thereby achieving opening, closing, or regulation.

[0003] Existing bidirectional pressure-bearing marine butterfly valves (bidirectional butterfly valve with application number 201920174147.0) use all-metal sealing rings. However, the sealing rings on the butterfly plate and the valve body are mostly integrated structures. When the sealing surface of the bidirectional pressure-bearing butterfly valve plate is corroded, the entire valve needs to be replaced. The sealing rings are not designed as separate structures so that the metal sealing rings can be replaced in time when they wear out, resulting in a waste of resources. Utility Model Content

[0004] In view of the above-mentioned defects or deficiencies in the prior art, it is desirable to provide a bidirectional pressure-bearing marine butterfly valve to solve the technical problem that the existing bidirectional pressure-bearing marine butterfly valves do not have a separate structure for the sealing rings on the butterfly plate and valve body, so that the metal sealing rings need to be replaced as a whole after wear, resulting in a waste of resources.

[0005] According to the technical solution provided in the embodiments of this application, a bidirectional pressure-bearing marine butterfly valve includes a butterfly plate, a sealing plate, and a valve body. The sealing plate is installed in the inner cavity of the valve body, and the butterfly plate is installed on the rear end of the sealing plate on the valve body via a connecting shaft.

[0006] The first sealing ring is installed in the first mounting groove on the butterfly plate and is used to seal the sealing surface of the butterfly plate.

[0007] The first sealing ring includes a plurality of first sealing blocks. Each of the first sealing blocks has a corresponding first snap-fit ​​block and a first snap-fit ​​groove at both ends, so that two adjacent first sealing blocks are snapped together with the first snap-fit ​​block through the first snap-fit ​​groove.

[0008] The second sealing ring is installed in the second mounting groove of the sealing plate and is used to seal the sealing surface of the sealing plate.

[0009] The second sealing ring includes a plurality of second sealing blocks. Each of the second sealing blocks has a corresponding second snap-fit ​​block and a second snap-fit ​​groove at both ends, so that two adjacent second sealing blocks can be snapped together with the second snap-fit ​​block through the second snap-fit ​​groove.

[0010] Furthermore, the sealing surfaces on the first sealing block and the second sealing block have an arc-shaped structure.

[0011] Furthermore, a positioning groove is provided on the inner side of the first sealing block, and a corresponding positioning strip is provided on the bottom plate of the butterfly plate so that the positioning strip is engaged in the positioning groove.

[0012] Furthermore, the butterfly plate also includes a first fixing plate, which has a plurality of first connecting holes so that bolts can be used to fix the first sealing block to the base plate through the first connecting holes.

[0013] Furthermore, the sealing plate has a ring-shaped structure.

[0014] Furthermore, the sealing plate includes a mounting plate and a second fixing plate, wherein the second fixing plate fixes the second sealing ring to the mounting plate by bolts.

[0015] In summary, the beneficial effects of this application are as follows:

[0016] 1. By setting the traditional integrated sealing ring on the bidirectional pressure marine butterfly valve to a split structure, when the butterfly plate sealing ring and the sealing ring on the sealing plate on the butterfly valve are worn, only the sealing block at the worn part needs to be replaced, without the need for overall replacement, thereby reducing the waste of resources;

[0017] Second, by setting a number of first sealing blocks and second sealing blocks on the first sealing ring and the second sealing ring into a snap-fit ​​connection structure, so that two adjacent first sealing blocks and second sealing blocks can be snap-fitted together, thereby improving the practicality of the sealing ring without affecting its sealing performance, and thus improving the practicality of the bidirectional marine butterfly valve. Attached Figure Description

[0018] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is an exploded structural diagram of the present invention;

[0021] Figure 3 This is an exploded view of the sealing plate of this utility model;

[0022] Figure 4 This is an exploded view of the butterfly plate of this utility model.

[0023] The following are the labeling elements in the diagram: Butterfly plate-100, First sealing ring-110, First sealing block-111, First snap-fit ​​block-1111, First snap-fit ​​groove-1112, Positioning groove-1113, Base plate-120, First mounting groove-121, Positioning strip-122, First fixing plate-130, Sealing plate-200, Second sealing ring-210, Second sealing block-211, Second snap-fit ​​block-2111, Second snap-fit ​​groove-2112, Mounting plate-220, Second mounting groove-221, Second fixing plate-230, Valve body-300. Detailed Implementation

[0024] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the relevant utility model and not intended to limit the utility model. Furthermore, it should be noted that, for ease of description, only the parts relevant to the utility model are shown in the accompanying drawings.

[0025] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0026] A bidirectional pressure-bearing marine butterfly valve, its structure is as follows: Figures 1-4As shown, the valve includes a butterfly plate 100, a sealing plate 200, and a valve body 300. The sealing plate 200 has an annular structure and is installed inside the valve body 300. The butterfly plate 100 is installed on the rear end of the sealing plate 200 on the valve body 300 via a connecting shaft, and the sealing surface on the butterfly plate 100 is engaged with the sealing surface on the sealing plate 200 for sealing. A first sealing ring 110 has an annular structure and is installed in a first mounting groove 121 on the butterfly plate 100. The first sealing ring 110 includes several first sealing blocks 111. Each first sealing block 111 has a corresponding first engaging block 1111 and a first engaging groove 1112 at both ends, so that two adjacent first sealing blocks 111 are engaged with the first engaging block 1111 through the first engaging groove 1112, thereby forming an annular first sealing ring 110 after the several first sealing blocks 111 are connected. For sealing the sealing surface of the butterfly plate 100; the second sealing ring 210 is installed in the second mounting groove 221 on the sealing plate 200. The second sealing ring 210 includes several second sealing blocks 211. Each second sealing block 211 has a corresponding second snap-fit ​​block 2111 and a second snap-fit ​​groove 2112 at both ends, so that two adjacent second sealing blocks 211 are snapped together with the second snap-fit ​​block 2111 through the second snap-fit ​​groove 2112 to form a ring-shaped second sealing ring 210, so that the second sealing ring 210 is used for sealing the sealing surface of the sealing plate 200. By setting the traditional integrated sealing ring on the bidirectional pressure marine butterfly valve to a split structure, when the sealing ring on the butterfly plate 100 and the sealing ring on the sealing plate 200 of the butterfly valve are worn, only the sealing block at the worn part needs to be replaced, without the need for overall replacement, thereby reducing the waste of resources.

[0027] As a preferred embodiment, please refer to Figure 3 and Figure 4 The sealing surfaces on the first sealing block 111 and the second sealing block 211 are arc-shaped, which is used to increase the sealing surface between the butterfly plate 100 and the sealing plate 200, thereby improving the sealing performance of the bidirectional pressure marine butterfly valve.

[0028] As a preferred embodiment, please refer to Figure 4 The inner side of the first sealing block 111 is also provided with a positioning groove 1113, and the bottom plate 120 on the butterfly plate 100 is provided with a corresponding positioning strip 122, so that the positioning strip 122 is engaged in the positioning groove 1113, thereby enabling the first sealing ring 110 to be positioned and engaged in the first mounting groove 121, thereby improving the installation stability of the first sealing strip.

[0029] As a preferred embodiment, please refer to Figure 2 and Figure 4The butterfly plate 100 also includes a first fixing plate 130, which has a plurality of first connecting holes. At the same time, the first slots and the first snap-fit ​​blocks 111 on each of the first sealing blocks 111 are also provided with corresponding first through holes, so that the bolts pass through the first connecting holes and the first through holes to fix the first sealing blocks 111 to the base plate 120.

[0030] As a preferred embodiment, please refer to Figure 2 and Figure 3 The sealing plate 200 includes a mounting plate 220 and a second fixing plate 230. The second fixing plate 230 fixes the second sealing ring 210 to the mounting plate 220 by bolts.

[0031] The working principle of this bidirectional pressure-bearing marine butterfly valve is as follows:

[0032] Bidirectional pressure-bearing marine butterfly valves require high sealing performance during use. However, the sealing surface at the connection between the butterfly plate 100 and the sealing plate 200 is easily affected by the medium in the pipeline, leading to erosion or wear, which in turn affects the valve's performance. By modifying the traditional integrated sealing ring on the bidirectional pressure-bearing marine butterfly valve into a split structure, when the first sealing ring 110 on the butterfly plate 100 and the second sealing ring 210 on the sealing plate 200 wear down, only the first sealing block 111 on the worn part of the first sealing ring 110 and the second sealing block 211 on the second sealing ring 210 need to be disassembled and replaced, eliminating the need for complete replacement and reducing resource waste. The several first sealing blocks 111 on the first sealing ring 110 form an arc-shaped structure, and along the annular mounting surface of the first mounting groove 121, adjacent first sealing blocks 111 are connected by the snap-fit ​​of the first snap-fit ​​block 1111 and the first snap-fit ​​groove 1112. The inner side of the first sealing block 111... A positioning groove 1113 is provided, which snaps into the positioning strip 122 on the base plate 120, so that the first sealing block 111 is positioned and installed in the first mounting groove 121. Corresponding bolts are screwed into the connecting holes on the first fixing plate 130 to fix several first sealing blocks 111 onto the base plate 120. At the same time, several second sealing blocks 211 on the second sealing ring 210 are connected to the first snap-fit ​​groove 1112 through the second snap-fit ​​blocks 2111 on two adjacent second sealing blocks 211, so that several The second sealing block 211 forms a second sealing ring 210 with an annular structure, and the second sealing ring 210 is snapped into the second mounting groove 221. The second fixing plate 230 is fixed to the mounting plate 220 by bolts. By setting the first sealing ring 110 and the second sealing ring 210 as a separate structure and fixing them to the butterfly plate 100 and the sealing plate 200 by bolts, the practicality of the sealing ring is improved without affecting the sealing performance of the sealing ring, thereby improving the practicality of the bidirectional marine butterfly valve.

[0033] The above description is merely a preferred embodiment of this application and an explanation of the technical principles and solutions employed. Furthermore, the scope of the utility model involved in this application is not limited to the specific combination of the above-described technical features, but should also cover other technical solutions formed by any combination of the above-described technical features or their equivalents without departing from the inventive concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. A bidirectional pressure-bearing marine butterfly valve, comprising a butterfly plate (100), a sealing plate (200), and a valve body (300), wherein the sealing plate (200) is installed in the inner cavity of the valve body (300), and the butterfly plate (100) is mounted on the rear end of the sealing plate (200) on the valve body (300) via a connecting shaft, characterized in that: The first sealing ring (110) is installed in the first mounting groove (121) on the butterfly plate (100) for sealing the sealing surface of the butterfly plate (100); The first sealing ring (110) includes a plurality of first sealing blocks (111). Each of the first sealing blocks (111) has a corresponding first snap-fit ​​block (1111) and a first snap-fit ​​groove (1112) at both ends, so that two adjacent first sealing blocks (111) can be snapped into connection with the first snap-fit ​​block (1111) through the first snap-fit ​​groove (1112). The second sealing ring (210) is installed in the second mounting groove (221) on the sealing plate (200) for sealing the sealing surface of the sealing plate (200); The second sealing ring (210) includes a plurality of second sealing blocks (211). The two ends of the second sealing blocks (211) are provided with corresponding second snap-fit ​​blocks (2111) and second snap-fit ​​grooves (2112) so that two adjacent second sealing blocks (2111) are snap-fitted to the second snap-fit ​​blocks (2111) through the second snap-fit ​​grooves (2112).

2. The bidirectional pressure-bearing marine butterfly valve according to claim 1, characterized in that: The sealing surfaces on the first sealing block (111) and the second sealing block (211) have an arc-shaped structure.

3. A bidirectional pressure-bearing marine butterfly valve according to claim 1, characterized in that: The first sealing block (111) is also provided with a positioning groove (1113) on its inner side, and the bottom plate (120) on the butterfly plate (100) is provided with a corresponding positioning strip (122) so that the positioning strip (122) is engaged in the positioning groove (1113).

4. A bidirectional pressure-bearing marine butterfly valve according to claim 1, characterized in that: The butterfly plate (100) also includes a first fixing plate (130), which has a plurality of first connecting holes so that bolts can be used to fix the first sealing block (111) to the base plate (120) through the first connecting holes.

5. A bidirectional pressure-bearing marine butterfly valve according to claim 1, characterized in that: The sealing plate (200) has a ring-shaped structure.

6. A bidirectional pressure-bearing marine butterfly valve according to claim 1, characterized in that: The sealing plate (200) includes a mounting plate (220) and a second fixing plate (230), wherein the second fixing plate (230) fixes the second sealing ring (210) to the mounting plate (220) by bolts.

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