High-temperature and high-pressure resistant bidirectional pressure-bearing all-metal hard sealing butterfly valve

Abstract

The utility model relates to a high temperature and high pressure resistant bidirectional pressure bearing all-metal hard sealing butterfly valve, which belongs to the technical field of hard sealing butterfly valves, and comprises a valve body, a rotating shaft of the valve body is fixedly connected with an overturning unit, the overturning unit comprises a valve plate, and the front side and the rear side of the valve plate are respectively provided with a sealing rubber ring and a clamping ring; first annular grooves are formed in the outer sides of the front portion and the rear portion of the valve plate correspondingly, second annular grooves are formed in the outer sides of the first annular grooves correspondingly, and the inner sides of the sealing rubber rings are clamped to the inner sides of the corresponding second annular grooves correspondingly. The valve plates, the sealing rubber rings and the clamping rings are connected with the corresponding first annular groove, the second annular groove and the third annular groove in a clamped mode and then fixed through the connecting bolts, the tight fit structure can effectively prevent medium leakage, the valve plates are arranged in a front-back half-and-half mode and connected with the rotating shaft through the connecting grooves, the valve plates rotate flexibly, opening and closing operation is faster, and the service life of the valve plates is prolonged. The valve plate and the clamping ring are made of all-metal injection molding, high in strength and capable of bearing high temperature and high pressure.

Description

Technical Field

[0001] This utility model relates to the field of hard-seal butterfly valve technology, and to a high-temperature, high-pressure, bidirectional pressure-bearing all-metal hard-seal butterfly valve. Background Technology

[0002] Hard-seal butterfly valves, also known as flap valves, are simple regulating valves that can also be used for on / off control of low-pressure pipeline media. They primarily function as shut-off and throttling devices in pipelines. The valve's opening and closing element is a disc-shaped butterfly plate that rotates around its own axis within the valve body to achieve opening, closing, or regulation. Hard-seal butterfly valves are suitable for pipelines transporting various corrosive and non-corrosive fluid media in generators, gas, steam, natural gas, city gas, hot and cold air, chemical smelting engineering, and power generation and environmental protection systems, used for regulating and cutting off the flow of media. Hard-seal butterfly valves can be classified as manual, pneumatic, and electric.

[0003] Existing hard-seal butterfly valves suffer from poor sealing performance after prolonged use due to the one-piece molding process of the valve plate and the installation of the sealing rubber ring on the valve plate. They are prone to leakage under high temperature and high pressure environments. The valve plate structure experiences uneven rotational force under high temperature and high pressure environments, which can affect working efficiency. Under harsh working conditions, they are also prone to corrosion and aging, resulting in a shortened service life. To solve the above problems, this application proposes a high-temperature and high-pressure resistant bidirectional pressure-bearing all-metal hard-seal butterfly valve. Utility Model Content

[0004] This utility model addresses the technical problems existing in the prior art by providing a high-temperature, high-pressure, bidirectional pressure-bearing all-metal hard-seal butterfly valve.

[0005] The technical solution of this utility model to solve the above technical problems is as follows: a high temperature and high pressure bidirectional pressure-bearing all-metal hard-seal butterfly valve, including a valve body, the rotating shaft of the valve body is fixedly connected to a flipping unit, the flipping unit includes a valve plate, and the front and rear sides of the valve plate are provided with sealing rubber rings and snap rings;

[0006] The valve plate has a first annular groove on both the front and rear outer sides, and a second annular groove on the outer side of each of the first annular grooves. The inner side of the sealing rubber ring is engaged with the inner side of the corresponding second annular groove, and the inner side of the engaging ring is engaged with the inner side of the corresponding first annular groove. The outer side of the inner side of the engaging ring has a third annular groove, and the outer side of the sealing rubber ring is engaged with the inner side of the corresponding third annular groove.

[0007] Several connecting bolts are equidistantly arranged on the outer side of the flipping unit. The connecting bolts are used to fix the valve plate, sealing rubber ring and snap ring together.

[0008] The valve plate is arranged in a front and back half configuration, and each half of the valve plate has a connecting groove in the middle. The connecting grooves are combined in half and fixedly connected to the rotating shaft of the valve body. The front and back half configuration of the valve plate facilitates installation and disassembly, reduces maintenance difficulty, and allows the valve plate to be subjected to more even force when rotating.

[0009] The valve plate is provided with reinforcing plates on both the front and rear sides. The reinforcing plates are integrally manufactured with the corresponding half of the valve plate. By providing reinforcing plates, the valve plate 201 is not easily deformed when subjected to high temperature and high pressure.

[0010] The shapes of the sealing rubber ring and the snap ring match the outer shape of the valve plate, ensuring a complete and tight seal.

[0011] Both the valve plate and the snap ring are made of all-metal injection molding, and the outer side of both the valve plate and the snap ring is provided with a waterproof coating. The material has high strength and can withstand high temperature and high pressure.

[0012] The sealing rubber rings are all injection molded from high-temperature resistant fluororubber material, and the outer side of the sealing rubber rings is provided with an anti-corrosion coating, which can maintain good elasticity and sealing performance in high-temperature environments and will not age or lose sealing effect due to excessive temperature.

[0013] The beneficial effects of this utility model are:

[0014] The valve plate, sealing rubber ring, and snap-fit ​​ring interlock with the corresponding first, second, and third annular grooves, and are then fixed by connecting bolts. This tight-fitting structure effectively prevents media leakage. The valve plate is arranged in two halves and connected to the rotating shaft through the connecting groove, allowing for flexible valve plate rotation and faster opening and closing. The valve plate and snap-fit ​​ring are made of all-metal injection molding, providing high strength and the ability to withstand high temperatures and pressures. The sealing rubber ring is made of high-temperature resistant fluororubber, maintaining good elasticity and sealing performance even in high-temperature environments. This ensures stable operation of the butterfly valve under harsh conditions and extends its service life. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0016] Figure 2 This is an exploded structural diagram of the flipping unit, sealing rubber ring, and snap ring of this utility model;

[0017] Figure 3 This is a three-dimensional structural diagram of the valve plate of this utility model;

[0018] Figure 4 This is a three-dimensional structural diagram of the snap-fit ​​ring of this utility model;

[0019] Figure 5This is a three-dimensional structural diagram of the sealing rubber ring of this utility model.

[0020] The attached diagram lists the components represented by each number as follows:

[0021] 1. Valve body; 2. Flip unit; 201. Valve plate; 202. Connecting groove; 203. First annular groove; 204. Second annular groove; 205. Reinforcing plate; 3. Sealing rubber ring; 4. Snap-fit ​​ring; 401. Third annular groove; 5. Connecting bolt. Detailed Implementation

[0022] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0023] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0024] In the description of this application, the term "for example" is used to mean "used as an example, illustration, or description." Any embodiment described as "for example" in this application is not necessarily to be construed as being more preferred or advantageous than other embodiments. The following description is provided to enable any person skilled in the art to implement and use the present invention. Details are set forth in the following description for purposes of explanation. It should be understood that those skilled in the art will recognize that the present invention can be implemented without using these specific details. In other instances, well-known structures and processes will not be described in detail to avoid obscuring the description of the present invention with unnecessary detail. Therefore, the present invention is not intended to be limited to the embodiments shown, but is consistent with the broadest scope of the principles and features disclosed in this application.

[0025] Reference Figure 1 - Figure 5 A high-temperature and high-pressure bidirectional pressure-bearing all-metal hard-seal butterfly valve includes a valve body 1. The rotating shaft of the valve body 1 is fixedly connected to a flip unit 2. The flip unit 2 includes a valve plate 201. Sealing rubber rings 3 and snap rings 4 are provided on the front and rear sides of the valve plate 201.

[0026] The valve plate 201 has a first annular groove 203 on the outer side of both the front and rear parts, and a second annular groove 204 on the outer side of the first annular groove 203. The inner side of the sealing rubber ring 3 is engaged with the inner side of the corresponding second annular groove 204. The inner side of the locking ring 4 is engaged with the inner side of the corresponding first annular groove 203. The outer side of the inner side of the locking ring 4 is engaged with a third annular groove 401. The outer side of the sealing rubber ring 3 is engaged with the inner side of the corresponding third annular groove 401.

[0027] Several connecting bolts 5 are equidistantly arranged on the outer side of the flip unit 2. The connecting bolts 5 are used to fix the valve plate 201, the sealing rubber ring 3 and the snap ring 4, so that the valve plate 201, the sealing rubber ring 3 and the snap ring 4 are tightly connected, which can effectively prevent the medium leakage. At the same time, through the first annular groove 203, the second annular groove 204 and the third annular groove 401 and the snap structure, good sealing performance can still be maintained under high temperature and high pressure environment, which enhances the overall stability and reliability of the butterfly valve, ensures its normal operation under harsh working conditions, and extends its service life.

[0028] Reference Figure 2 and Figure 3 The valve plate 201 is configured in a front-to-back split, with a connecting groove 202 in the middle of each half. The connecting grooves 202 are combined in half and fixedly connected to the rotating shaft of the valve body 1. The valve plate 201 is configured in a front-to-back split and fixed to the rotating shaft of the valve body 1 through the connecting grooves 202, which facilitates installation and disassembly, reduces maintenance difficulty, and makes the valve plate 201 more evenly stressed when rotating. During bidirectional pressure bearing, the valve plate 201 rotates more flexibly and can quickly respond to switching operations, improving the working efficiency of the butterfly valve and ensuring the timeliness of pipeline medium flow control.

[0029] Reference Figure 2 The valve plate 201 is provided with reinforcing plates 205 on both the front and rear sides. The reinforcing plates 205 are integrally manufactured with the corresponding half of the valve plate 201. The integral manufacturing of the reinforcing plates 205 and the valve plate 201 enhances the structural strength of the valve plate 201. When subjected to high temperature and high pressure, the valve plate 201 is not easily deformed, ensuring the sealing effect between the valve plate 201 and the sealing rubber ring 3 and the snap ring 4. Even under harsh working conditions for a long time, the valve plate 201 can maintain its normal shape, continuously and stably control the flow of the medium, reduce the risk of leakage caused by the deformation of the valve plate 201, and improve the overall durability of the butterfly valve.

[0030] Reference Figure 4 and Figure 5The shapes of the sealing rubber ring 3 and the snap ring 4 match the outer shape of the valve plate 201, which can ensure the completeness and tightness of the seal. When the valve is closed, it can better fit the internal shape of the valve body 1, reduce gaps, and prevent the medium from leaking from the edge of the valve plate 201. At the same time, the matching shape helps to disperse pressure, making the sealing structure more stable under high pressure, improving the sealing performance of the butterfly valve, and meeting the sealing requirements under different working conditions.

[0031] Reference Figure 1 - Figure 5 Both the valve plate 201 and the snap ring 4 are made of all-metal injection molding, and the outer sides of both the valve plate 201 and the snap ring 4 are provided with a waterproof coating. The valve plate 201 and the snap ring 4, made of all-metal injection molding, have high material strength and can withstand high temperature and high pressure. At the same time, the waterproof coating can prevent external moisture erosion, avoid metal rust and corrosion, and extend the service life of the components. In humid or corrosive environments, the waterproof coating can effectively protect the metal components, maintain the normal performance of the butterfly valve, ensure the long-term stable operation of the valve, and reduce maintenance costs.

[0032] Reference Figure 5 All sealing rubber rings 3 are injection molded from high-temperature resistant fluororubber material, and the outer side of the sealing rubber rings 3 is provided with an anti-corrosion coating. The high-temperature resistant fluororubber sealing rubber rings 3 can maintain good elasticity and sealing performance in high-temperature environments, and will not age or lose sealing effect due to excessive temperature. At the same time, the outer anti-corrosion coating can resist media corrosion, prevent the sealing rubber rings 3 from being eroded, ensure its sealing reliability, and ensure the stable sealing performance of the butterfly valve.

[0033] Working principle:

[0034] First, connect the valve plate 201 (which is split in half) with the sealing rubber ring 3 and the snap ring 4. Secure the sealing rubber ring 3 within the second annular groove 204 on the outer side of the valve plate 201. Then, snap the snap ring 4 into the first annular groove 203, positioning the sealing rubber ring 3 between the valve plate 201 and the snap ring 4. Simultaneously, align the bolt holes with the holes in the valve plate 201 during the installation of the sealing rubber ring 3 and the snap ring 4. Next, connect the valve plates 201 (which are split in half) and lock the front and rear valve plates 201 with the sealing rubber ring 3 and the snap ring 4 using the connecting bolts 5. Finally, place the entire assembly in the middle of the valve body 1 and pass the rotating shaft of the valve body 1 through the connecting groove 202 and fix it in place.

[0035] Although preferred embodiments of the present invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the present invention.

[0036] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A high temperature and high pressure resistant bidirectional pressure bearing all-metal hard sealing butterfly valve, comprising a valve body (1), characterized in that, The rotating shaft of the valve body (1) is fixedly connected with a turnover unit (2), the turnover unit (2) comprises a valve plate (201), and the front and rear sides of the valve plate (201) are provided with sealing rubber rings (3) and clamping rings (4); The front and rear outer sides of the valve plate (201) are provided with first annular grooves (203), the outer sides of the first annular grooves (203) are provided with second annular grooves (204), the inner sides of the sealing rubber rings (3) are clamped in the inner sides of the corresponding second annular grooves (204), the inner sides of the clamping rings (4) are clamped in the inner sides of the corresponding first annular grooves (203), the outer sides of the inner sides of the clamping rings (4) are provided with third annular grooves (401), and the outer sides of the sealing rubber rings (3) are clamped in the inner sides of the corresponding third annular grooves (401). The outer side of the turnover unit (2) is provided with a plurality of connecting bolts (5) at equal intervals, and the connecting bolts (5) are used for fixedly connecting the valve plate (201), the sealing rubber ring (3) and the clamping ring (4).

2. The high temperature and high pressure resistant bidirectional pressure retaining all-metal hard-sealed butterfly valve according to claim 1, characterized in that, The valve plate (201) is provided in a front-rear half manner, and the middle parts of the valve plates (201) provided in a front-rear half manner are provided with connecting grooves (202), the connecting grooves (202) are combined in a front-rear half manner and are fixedly connected with the rotating shaft of the valve body (1).

3. The high temperature and high pressure resistant bidirectional pressure retaining all-metal hard-sealed butterfly valve according to claim 2, characterized in that, The front and rear sides of the valve plate (201) are provided with reinforcing plates (205), and the reinforcing plates (205) are integrally made with the corresponding valve plates (201) provided in a front-rear half manner.

4. The high temperature and high pressure resistant full metal hard sealed butterfly valve of claim 1, wherein, The shapes of the sealing rubber rings (3) and the clamping rings (4) are matched with the shape of the outer side of the valve plate (201).

5. The high temperature and high pressure resistant full metal hard sealed butterfly valve of claim 1, wherein, The valve plate (201) and the clamping ring (4) are made of full metal injection molding, and the outer sides of the valve plate (201) and the clamping ring (4) are provided with waterproof coatings.

6. The high temperature and high pressure resistant full metal hard-seal butterfly valve of claim 1, wherein, The sealing rubber rings (3) are made of high-temperature-resistant fluorine rubber material injection molding, and the outer sides of the sealing rubber rings (3) are provided with corrosion-resistant coatings.

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