Corrosion-resistant soft sealing butterfly valve

Abstract

The utility model relates to the field of valves, in particular to a corrosion-resistant soft sealing butterfly valve which comprises a valve body and a valve clack, a sealing ring is arranged at a valve seat of the valve body, first grooves are arranged on two sides of the inner wall of the sealing ring, the outer walls of two opposite sides of the first grooves are lower than the outer wall of the other side, the valve clack is arranged on the valve seat of the valve body, and the valve clack is arranged on the valve seat of the valve body. Sealing strips are arranged on the two sides of the valve clack. When the valve clack is opened and closed, the sealing strip is clamped in the first groove through rotation, good sealing performance can be achieved, meanwhile, direct friction between the valve clack and the sealing ring is avoided, the abrasion resistance of the valve clack is improved, and the service life of the valve clack is prolonged. And meanwhile, the sealing ring and the sealing strip are provided with the corrosion-resistant layers, so that the effect of overlapping two layers can be achieved, and the corrosion-resistant effect is improved.

Description

Technical Field

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

[0002] A butterfly valve, also known as a flap valve, is a valve with a disc-shaped disc that rotates back and forth around the valve axis to open, close or adjust the flow of the medium. It can be used to control the flow of various types of fluids such as air, water, steam, various corrosive media, mud, oil, liquid metal and radioactive media. It mainly plays a cutting and throttling role in pipelines.

[0003] The soft-sealed butterfly valve uses a rubber sealing ring to seal around the valve disc. The sealing ring has poor corrosion resistance and is not corrosion-resistant and wear-resistant. After long-term use, the sealing ring will wear and become loose, resulting in poor sealing effect and water leakage, which greatly reduces the service life of the butterfly valve. Utility Model Content

[0004] Other features and advantages of the utility model will be described in the following description, and partly become apparent from the description, or understood by implementing the utility model. The purpose and other advantages of the utility model can be realized and obtained through the structures specifically pointed out in the description and other drawings of the description.

[0005] The purpose of the utility model is to overcome the above-mentioned shortcomings and provide a corrosion-resistant soft-sealed butterfly valve to solve the existing problems.

[0006] To achieve the above-mentioned purpose, the technical solution of the utility model is: a corrosion-resistant soft-sealed butterfly valve, including a valve body and a valve disc, a sealing ring is provided at the valve seat of the valve body, first grooves are provided on both sides of the inner wall of the sealing ring, and the outer walls on the opposite sides of the first groove are lower than the height of the outer wall on the other side. The valve disc is arranged on the valve seat of the valve body, and sealing strips are provided on both sides of the valve disc.

[0007] In some embodiments, tops of outer walls on opposite sides of the first groove are arc-shaped.

[0008] In some embodiments, both sides of the outer wall of the sealing strip are arc-shaped.

[0009] In some embodiments, second grooves are provided on both sides of the valve flap, the sealing strip is provided in the second groove, an iron sheet is provided between the sealing strip and the second groove, and electromagnets are embedded on both sides of the valve body seat, and the electromagnets are located between the valve seat and the sealing ring.

[0010] In some embodiments, the iron sheet is slidably connected to the second groove.

[0011] In some embodiments, a plurality of springs are disposed between the iron sheet and the second groove.

[0012] In some embodiments, an electric controller is provided on the top of the valve body.

[0013] By adopting the above technical scheme, the beneficial effect of the utility model is as follows: the utility model sets a first groove, and when the valve disc is opened and closed, the sealing strip is stuck in the first groove by rotating, which can not only have good sealing performance, but also prevent the valve disc and the sealing ring from directly rubbing against each other, thereby increasing its wear resistance. At the same time, a corrosion-resistant layer is set on both the sealing ring and the sealing strip, so that the effect of stacking two layers can be achieved, thereby increasing its corrosion resistance.

[0014] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present disclosure.

[0015] Undoubtedly, these and other objects of the present invention will become more apparent after the following detailed description of the preferred embodiments described with reference to various figures and drawings.

[0016] In order to make the above and other purposes, features and advantages of the present invention more obvious and understandable, one or several preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention.

[0018] In the drawings, the same reference numerals are used for the same components and the drawings are schematic and not necessarily drawn to scale.

[0019] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only one or several embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on such drawings without paying creative work.

[0020] Figure 1 It is a schematic diagram of the structure of the valve body of some embodiments of the utility model;

[0021] Figure 2 It is a schematic diagram of the structure of the valve body and valve seat of some embodiments of the utility model;

[0022] Figure 3 It is a schematic diagram of the structure of the valve flap of some embodiments of the utility model;

[0023] Figure 4 Schematic cross-sectional view of the sealing ring of some embodiments of the present invention. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with specific implementation methods. It should be understood that the specific implementation methods described here are only used to explain the utility model, but not to limit the utility model.

[0025] In addition, in the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0026] In the present utility model, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral one; it can be directly connected, or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. However, if it is indicated as a direct connection, it means that the two connected bodies are not connected through a transition structure, but are connected to form a whole through a connecting structure. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to the specific circumstances.

[0027] In the present utility model, unless otherwise clearly specified and limited, the first feature "above" or "below" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in an appropriate manner in any one or more embodiments or examples.

[0028] The specific implementation of the present utility model is described below with reference to the accompanying drawings.

[0029] Reference Figure 1-4 , Figure 1 It is a schematic diagram of the structure of the valve body of some embodiments of the utility model; Figure 2 It is a schematic diagram of the structure of the valve body and valve seat of some embodiments of the utility model; Figure 3 It is a schematic diagram of the structure of the valve flap of some embodiments of the utility model; Figure 4 Schematic cross-sectional view of the sealing ring of some embodiments of the present invention.

[0030] The utility model provides a corrosion-resistant soft-sealed butterfly valve, comprising a valve body 1 and a valve disc 3, a sealing ring 2 is arranged at the valve seat of the valve body 1, first grooves 21 are arranged on both sides of the inner wall of the sealing ring 2, the outer walls on the opposite sides of the first groove 21 are lower than the height of the outer wall on the other side, the valve disc 3 is arranged on the valve seat of the valve body 1, and sealing strips 31 are arranged on both sides of the valve disc 3.

[0031] By setting the first groove 21, when the valve flap 3 is opened or closed, the sealing strip 31 is locked in the first groove 21 by rotating, which can not only achieve good sealing, but also prevent the valve flap 3 and the sealing ring 2 from direct friction, thereby increasing the wear resistance. At the same time, the sealing ring 2 and the sealing strip 31 are both provided with a corrosion-resistant layer, so that the effect of stacking two layers can be achieved, thereby increasing the corrosion resistance. In addition, the height of the first groove 21 on the opposite side is relatively low, so that the sealing strip can be better locked in.

[0032] According to some embodiments of the utility model, optionally, the tops of the outer walls on opposite sides of the first groove 21 are arc-shaped. The shorter side of the first groove 21 is arc-shaped so that the sealing strip 31 can be easily inserted therein.

[0033] According to some embodiments of the present invention, optionally, both sides of the outer wall of the sealing strip 31 are arc-shaped, so that the sealing strip 31 can be better inserted into the groove.

[0034] According to some embodiments of the utility model, optionally, the valve flap 3 is provided with a second groove 32 on both sides, the sealing strip 31 is provided in the second groove 32, an iron sheet 33 is provided between the sealing strip 31 and the second groove 32, and an electromagnet 34 is embedded on both sides of the valve seat of the valve body 1, and the electromagnet 34 is located between the valve seat and the sealing ring 2. When the valve flap 3 is closed, the iron sheet 33 can be adsorbed by starting the electromagnet 34 to make the sealing strip 31 and the sealing ring 2 fit more closely, thereby increasing the sealing performance. In this way, the sealing performance can be maintained for a long period of time even after the sealing strip 31 and the sealing ring 2 are worn, and then the electromagnet 34 can be closed and then opened to open the valve flap 3 when it needs to be opened.

[0035] According to some embodiments of the utility model, the iron sheet 33 is optionally slidably connected to the second groove 32 to limit the position, so that the iron sheet 33 will not be separated after adsorption, causing the sealing strip 31 to bulge and fail to close.

[0036] According to some embodiments of the utility model, optionally, a plurality of springs 35 are provided between the iron sheet 33 and the second groove 32. In order to better pull the iron sheet 33 and the electromagnet 34 back into the groove through the springs 35 when the iron sheet 33 and the electromagnet 34 are separated.

[0037] According to some embodiments of the present utility model, optionally, an electric controller 11 is provided on the top of the valve body 1. The electric controller 11 connects the valve flap 3 and the electromagnet 34 for electric control, which is more convenient to operate.

[0038] It should be understood that the embodiments disclosed in the present invention are not limited to the specific processing steps or materials disclosed herein, but should be extended to equivalent substitutions of such features understood by ordinary technicians in the relevant field. It should also be understood that the terms used herein are only used for the purpose of describing specific embodiments and are not meant to be limiting.

[0039] The "embodiment" mentioned in the specification means that the specific features or characteristics described in conjunction with the embodiment are included in at least one embodiment of the utility model. Therefore, the phrases or "embodiment" appearing in various places throughout the specification do not necessarily refer to the same embodiment.

[0040] In addition, the described features or characteristics may be combined in one or more embodiments in any other suitable manner. In the above description, some specific details, such as thickness, quantity, etc., are provided to provide a comprehensive understanding of the embodiments of the utility model. However, those skilled in the relevant art will understand that the utility model can be implemented without one or more of the above specific details or can also be implemented using other methods, components, materials, etc.

Claims

1. A corrosion-resistant soft-sealed butterfly valve, characterized in that: include: The valve body has a sealing ring at its valve seat, and first grooves are provided on both sides of the inner wall of the sealing ring. The outer walls on the opposite sides of the first groove are lower than the height of the outer wall on the other side; the valve flap is arranged on the valve seat of the valve body, and sealing strips are provided on both sides of the valve flap.

2. The corrosion-resistant soft-sealed butterfly valve according to claim 1 is characterized in that: The tops of the outer walls on opposite sides of the first groove are arc-shaped.

3. The corrosion-resistant soft-sealed butterfly valve according to claim 2 is characterized in that: Both sides of the outer wall of the sealing strip are arc-shaped.

4. The corrosion-resistant soft-sealed butterfly valve according to claim 1 is characterized in that: Second grooves are provided on both sides of the valve flap, the sealing strip is arranged in the second groove, an iron sheet is arranged between the sealing strip and the second groove, and electromagnets are embedded on both sides of the valve seat of the valve body, and the electromagnets are located between the valve seat and the sealing ring.

5. The corrosion-resistant soft-sealed butterfly valve according to claim 4 is characterized in that: The iron sheet is slidably connected to the second groove.

6. The corrosion-resistant soft-sealed butterfly valve according to claim 4 or 5, characterized in that: A plurality of springs are arranged between the iron sheet and the second groove.

7. The corrosion-resistant soft-sealed butterfly valve according to claim 4, characterized in that: An electric controller is arranged on the top of the valve body.

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