Butterfly valve with good sealing performance

Abstract

The utility model discloses a butterfly valve with good sealing performance, which comprises a butterfly valve main body, a mounting seat sleeve is fixedly embedded on the upper surface of the butterfly valve main body, a valve plate is arranged in the butterfly valve main body, the left side surface of the valve plate is fixedly connected with a connecting block, a valve rod is clamped on the inner wall of the mounting seat sleeve, and the valve rod is fixedly connected with the connecting block. The top end of the valve rod is fixedly connected with a driving unit, a sealing bearing is fixedly embedded in the inner bottom wall of the butterfly valve body, an inner ring of the sealing bearing is fixedly connected with a rotating shaft, and the ends, close to each other, of the valve rod and the rotating shaft are fixedly connected with the ends, close to each other, of two connecting blocks correspondingly. An annular groove is formed in the outer surface of the valve plate. By arranging the valve seat, the valve plate, the annular groove, the annular sealing ring, the annular hoop groove and the sealing washer, the annular sealing ring and the sealing washer can be clamped and placed, the valve plate and the valve seat are flexibly connected, the abrasion phenomenon of the valve plate and the valve seat is effectively avoided, and the butterfly valve can be effectively sealed and used conveniently.

Description

Technical Field

[0001] The utility model relates to the technical field of butterfly valves, in particular to a butterfly valve with good sealing performance. Background Art

[0002] A butterfly valve, also known as a flap valve, is a regulating valve with a simple structure. It can be used for the on-off control of low-pressure pipeline media. A butterfly valve refers to a valve with a closing member (valve disc or butterfly plate) as a disc, which rotates around the valve axis to achieve opening and closing. The valve 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 role of cutting off and throttling in the pipeline. The butterfly valve opening and closing member is a disc-shaped butterfly plate, which rotates around its own axis in the valve body to achieve the purpose of opening and closing or regulation. Among them, the hydraulically controlled butterfly valve is a type of butterfly valve. The hydraulically controlled butterfly valve is divided into three types: pressure-maintaining type, locking type and energy storage type. It is suitable for the outlet of water pumps and the inlet pipelines of turbines. As a closed-circuit valve and check valve, it is used to avoid and reduce the backflow of media in the pipeline system and the generation of excessive water hammer to protect the pipeline system.

[0003] During the use of existing hydraulic butterfly valves, the valve seat and the valve plate are generally hard-connected to achieve the sealing of the butterfly valve. After long-term use, it is easy to wear and leak, which reduces the sealing performance of the butterfly valve. To this end, we propose a butterfly valve with good sealing performance to solve the above problem. Utility Model Content

[0004] The utility model aims to provide a butterfly valve with good sealing performance to solve the problems raised in the above background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A butterfly valve with good sealing performance comprises a butterfly valve body, the upper surface of the butterfly valve body is fixedly inlaid with a mounting seat sleeve, the interior of the butterfly valve body is provided with a valve plate, the left side of the valve plate is fixedly connected to a connecting block, the inner wall of the mounting seat sleeve is clamped with a valve stem, the top of the valve stem is fixedly connected to a driving unit, the inner bottom wall of the butterfly valve body is fixedly inlaid with a sealing bearing, the inner ring of the sealing bearing is fixedly connected with a rotating shaft, the ends of the valve stem and the rotating shaft close to each other are respectively fixedly connected to the ends of two connecting blocks close to each other, the outer surface of the valve plate is provided with an annular groove, the inner wall of the annular groove is clamped with an annular sealing ring, the inner wall of the butterfly valve body is fixedly connected with a valve seat, the inner wall of the valve seat is provided with an annular clamp groove, the inner wall of the annular clamp groove is clamped with a sealing gasket, and the outer surface of the sealing gasket contacts the outer surface of the annular sealing ring.

[0007] In a further embodiment, both left and right ends of the butterfly valve body are fixedly connected with connecting flanges, and a group of connecting holes are formed on the side surfaces of the two connecting flanges that are away from each other.

[0008] In a further embodiment, the side surfaces of the two connecting flanges that are away from each other are fixedly connected with sealing rubber rings.

[0009] In a further embodiment, a guide cone block is fixedly connected to the inner wall of the butterfly valve body, and a left side surface of the guide cone block is fixedly connected to a right side surface of the valve seat.

[0010] In a further embodiment, a moving handle is fixedly connected to the front side of the butterfly valve body and the back side of the butterfly valve body, and the moving handle is located in the middle part of the butterfly valve body.

[0011] In a further embodiment, a model plate is fixedly connected to the bottom surface of the butterfly valve body, and the model plate is located in the middle of the butterfly valve body.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] The device can realize the clamping and placement of the annular sealing ring and the sealing gasket through the valve seat, valve plate, annular groove, annular sealing ring, annular clamp groove and sealing gasket, and realize the soft connection between the valve plate and the valve seat, effectively avoiding wear between the valve plate and the valve seat, and facilitating the effective sealing use of the butterfly valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall three-dimensional structure of a butterfly valve with good sealing performance.

[0015] Figure 2 This is a bottom view of the butterfly valve body of a butterfly valve with good sealing performance.

[0016] Figure 3 This is the rear view of the butterfly valve body in a butterfly valve with good sealing performance.

[0017] Figure 4 This is a schematic diagram of the internal anatomical structure of the butterfly valve body in a butterfly valve with good sealing performance.

[0018] Figure 5 For butterfly valves with good sealing performance Figure 4 Schematic diagram of the structure with a partial enlargement at point A in the middle.

[0019] In the figure: 1. Butterfly valve body; 2. Mounting seat sleeve; 3. Driving unit; 4. Connecting flange; 5. Connecting hole; 6. Sealing rubber ring; 7. Moving handle; 8. Model plate; 9. Valve plate; 10. Guide cone block; 11. Valve stem; 12. Connecting block; 13. Annular groove; 14. Annular sealing ring; 15. Rotating shaft; 16. Sealing bearing; 17. Valve seat; 18. Annular clamp groove; 19. Sealing gasket. DETAILED DESCRIPTION

[0020] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0021] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-5In the utility model, a butterfly valve with good sealing performance comprises a butterfly valve body 1, a mounting seat sleeve 2 is fixedly inlaid on the upper surface of the butterfly valve body 1, a valve plate 9 is arranged inside the butterfly valve body 1, a connecting block 12 is fixedly connected to the left side of the valve plate 9, a valve stem 11 is clamped on the inner wall of the mounting seat sleeve 2, a driving unit 3 is fixedly connected to the top of the valve stem 11, a sealing bearing 16 is fixedly inlaid on the inner bottom wall of the butterfly valve body 1, a rotating shaft 15 is fixedly connected to the inner ring of the sealing bearing 16, and the ends of the valve stem 11 and the rotating shaft 15 close to each other are respectively fixedly connected to the ends of the two connecting blocks 12 close to each other, an annular groove 13 is provided on the outer surface of the valve plate 9, an annular sealing ring 14 is clamped on the inner wall of the annular groove 13, a valve seat 17 is fixedly connected to the inner wall of the butterfly valve body 1, an annular clamp groove 18 is provided on the inner wall of the valve seat 17, a sealing gasket 19 is clamped on the inner wall of the annular clamp groove 18, and the outer surface of the sealing gasket 19 contacts the outer surface of the annular sealing ring 14.

[0024] The left and right ends of the butterfly valve body 1 are fixedly connected with connecting flanges 4, and a group of connecting holes 5 are opened on the side of the two connecting flanges 4 away from each other. The connecting flanges 4 and the connecting holes 5 can facilitate the installation of the butterfly valve body 1. The side of the two connecting flanges 4 away from each other is fixedly connected with a sealing rubber ring 6, which can achieve a sealed connection of the butterfly valve body 1 and avoid leakage.

[0025] The inner wall of the butterfly valve body 1 is fixedly connected with a guide cone block 10, and the left side of the guide cone block 10 is fixedly connected to the right side of the valve seat 17, which can guide the water flow inside the valve body and reduce the impact force on the valve seat 17. The front and back of the butterfly valve body 1 are fixedly connected with a moving handle 7, and the moving handle 7 is located in the middle of the butterfly valve body 1, which can make it easier for the staff to hold the butterfly valve body 1 and facilitate the installation of the butterfly valve. The bottom surface of the butterfly valve body 1 is fixedly connected with a model plate 8, and the model plate 8 is located in the middle of the butterfly valve body 1. It can explain the model of this butterfly valve, which is convenient for people to understand and use this butterfly valve.

[0026] The working principle of the utility model is:

[0027] When in use, first clamp the annular sealing ring 14 into the annular groove 13 to complete the installation of the outer sealing layer of the valve plate 9, then clamp the sealing gasket 19 into the annular clamp groove 18 to complete the installation of the inner wall sealing layer of the valve seat 17, and then install the butterfly valve on the conveying pipeline through the cooperation of the connecting flange 4, the connecting hole 5 and the sealing rubber ring 6. During use, when the valve plate 9 is opened and closed, the soft sealing connection between the valve plate 9 and the valve seat 17 is realized, and then the effective sealing use of the butterfly valve is realized.

[0028] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0029] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A butterfly valve with good sealing performance, characterized by: The butterfly valve comprises a butterfly valve body (1), the upper surface of which is fixedly inlaid with a mounting seat sleeve (2), a valve plate (9) is arranged inside the butterfly valve body (1), a connecting block (12) is fixedly connected to the left side of the valve plate (9), a valve stem (11) is clamped on the inner wall of the mounting seat sleeve (2), the top of the valve stem (11) is fixedly connected to a driving unit (3), a sealing bearing (16) is fixedly inlaid on the inner bottom wall of the butterfly valve body (1), the inner ring of the sealing bearing (16) is fixedly connected to a rotating shaft (15), and the ends of the valve stem (11) and the rotating shaft (15) that are close to each other are respectively close to two connecting blocks (12). The butterfly valve body (1) is fixedly connected to one end of the butterfly valve body (1), an annular groove (13) is provided on the outer surface of the valve plate (9), an annular sealing ring (14) is clamped on the inner wall of the annular groove (13), a valve seat (17) is fixedly connected to the inner wall of the butterfly valve body (1), a guide cone block (10) is fixedly connected to the inner wall of the butterfly valve body (1), the left side surface of the guide cone block (10) is fixedly connected to the right side surface of the valve seat (17), an annular clamp groove (18) is provided on the inner wall of the annular clamp groove (18), a sealing gasket (19) is clamped on the inner wall of the annular clamp groove (18), and the outer surface of the sealing gasket (19) is in contact with the outer surface of the annular sealing ring (14).

2. A butterfly valve with good sealing performance according to claim 1, characterized in that: The left and right ends of the butterfly valve body (1) are both fixedly connected with connecting flanges (4), and a group of connecting holes (5) are provided on the side surfaces of the two connecting flanges (4) that are away from each other.

3. A butterfly valve with good sealing performance according to claim 2, characterized in that: The side surfaces of the two connecting flanges (4) that are away from each other are both fixedly connected with sealing rubber rings (6).

4. A butterfly valve with good sealing performance according to claim 1, characterized in that: The front side of the butterfly valve body (1) and the back side of the butterfly valve body (1) are both fixedly connected with a moving handle (7), and the moving handle (7) is located in the middle of the butterfly valve body (1).

5. A butterfly valve with good sealing performance according to claim 1, characterized in that: A model plate (8) is fixedly connected to the bottom surface of the butterfly valve body (1), and the model plate (8) is located in the middle of the butterfly valve body (1).

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