A type of beveled ball valve with a middle flange

Abstract

This utility model discloses a flanged bevel ball valve, including a valve body and a valve cover. The valve body has a mounting cavity for installing a valve core, and also a packing cavity connected and communicating with the mounting cavity. The valve core includes a ball located in the mounting cavity and a valve stem disposed on the ball. After the valve stem obliquely penetrates the packing cavity, a packing gland is used to press the packing into the packing cavity. The mounting cavity has a first connecting part on the side facing the valve cover, and the valve cover has a second connecting part on the side facing the valve body. An angle α is formed between the outer wall of the first connecting part and the central axis of the valve body, and an angle b is formed between the second connecting part and the central axis of the valve cover. The sum of the angles α and b is 180 degrees, and angle α is an acute angle greater than 60 degrees. Therefore, the ball does not interfere with the valve body when installed, solving the defect of conventional ball valves that cannot be installed in the valve body due to the excessive length of the valve stem.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, specifically to a ball valve with a middle flange bevel. Background Technology

[0002] A ball valve is a type of valve in which the valve stem drives the valve ball to rotate around the valve's axis. A ball valve includes a valve body, valve ball, valve stem, and valve seat, such as... Figure 1 As shown, the valve seat of a typical ball valve is also formed by connecting the left and right valve bodies, but the two are mounted on perpendicular surfaces. This structure is suitable for a separate valve ball and valve stem structure, but it cannot be installed into a valve body for a valve ball and valve stem integrated structure. Utility Model Content

[0003] The purpose of this utility model is to provide a ball valve with a beveled flange to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a flanged bevel ball valve, comprising a valve body and a valve cover, wherein the valve body is provided with a mounting cavity for mounting a valve core, and the valve body is also provided with a packing cavity connected and communicating with the mounting cavity; the valve core includes a ball located in the mounting cavity and a valve stem disposed on the ball, the valve stem obliquely penetrating the packing cavity, and a packing gland is provided to press the packing into the packing cavity; the mounting cavity has a first connecting part on the side facing the valve cover, and the valve cover has a second connecting part on the side facing the valve body; the outer wall of the first connecting part forms an angle α with the central axis of the valve body, and the second connecting part forms an angle b with the central axis of the valve cover; wherein the sum of the angles α and β is 180 degrees, and the angle α is an acute angle greater than 60 degrees.

[0005] As a preferred technical solution of this utility model: the valve body is further provided with a mounting platform, which is connected to the packing gland by bolts to press the packing into the packing cavity.

[0006] As a preferred technical solution of this utility model: the inner wall surfaces of the valve body and the valve cover are provided with a first annular groove and a strip groove.

[0007] As a preferred technical solution of this utility model: a second annular groove is provided on the facing surfaces of the valve body and the valve cover.

[0008] As a preferred technical solution of this utility model, the outer wall surface of the valve core is provided with a protective sleeve.

[0009] As a preferred technical solution of this utility model: the sphere is further provided with a through hole on its spherical surface, and the valve stem is further provided with a waist-shaped groove on its outer wall surface.

[0010] The beneficial effects of this utility model by adopting the above technical solution are as follows: since the outer wall surface of the first connecting part forms an angle α with the central axis of the valve body, and the second connecting part forms an angle b with the central axis of the valve cover; wherein the sum of the angles of the included angles α and β is 180 degrees, and the included angle α is an acute angle greater than 60 degrees, the ball does not interfere with the valve body when it is installed, thus solving the defect of conventional ball valves that cannot be installed in the valve body due to the excessive length of the valve stem. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the main structure of a valve body in the prior art;

[0012] Figure 2 This is an exploded view of the main structure of this utility model;

[0013] Figure 3 This is a schematic diagram of the front structure of the valve body of this utility model;

[0014] Figure 4 This is a schematic diagram of the cross-sectional structure of the valve body of this utility model;

[0015] Figure 5 This is a schematic diagram of the front structure of the valve cover of this utility model;

[0016] Figure 6 This is a schematic diagram of the main structure of the valve stem of this utility model.

[0017] In the diagram: 1. Valve body; 11. First connecting part; 12. Mounting platform; 13. Packing cavity; 14. Strip groove; 15. First annular groove; 16. Second annular groove; 17. Mounting cavity; 2. Packing gland; 3. Valve core; 30. Valve stem; 31. Waist-shaped groove; 32. Ball; 33. Through hole; 4. Protective sleeve; 5. Valve cover; 6. Second connecting part. Detailed Implementation

[0018] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model. In the description of this utility model, it should be understood that the terms "upper," "lower," "front," "upper surface," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting this utility model.

[0019] Please see Figure 2-6This utility model provides an embodiment of a flanged bevel ball valve, comprising a valve body 1 and a valve cover 5. The valve body 1 is provided with a mounting cavity 17 for mounting a valve core 3, and the valve body 1 is also provided with a packing cavity 13 connected and communicating with the mounting cavity 17. The valve core 3 includes a ball 32 located in the mounting cavity 17 and a valve stem 30 disposed on the ball 32. After the valve stem 30 obliquely penetrates the packing cavity 13, the packing is pressed into the packing cavity 13 by a packing gland 2. The mounting cavity 17 is provided with a first connecting part 11 on the side facing the valve cover 5, and the valve cover 5 is provided with a second connecting part 6 on the side facing the valve body 1. An angle α is formed between the outer wall of the first connecting part 11 and the central axis of the valve body 1, and an angle b is formed between the second connecting part 6 and the central axis of the valve cover 5. The sum of the angles α and β is 180 degrees, and the angle α is an acute angle greater than 60 degrees. Because an angle α is formed between the outer wall of the first connecting part and the central axis of the valve body, and an angle b is formed between the second connecting part and the central axis of the valve cover; wherein the sum of the angles α and β is 180 degrees, and angle α is an acute angle greater than 60 degrees, specifically α is 70 degrees and β is 110 degrees, the ball does not interfere with the valve body when it is installed, thus solving the defect of conventional ball valves that cannot be installed in the valve body due to the excessive length of the valve stem.

[0020] Furthermore, since the valve body 1 is also provided with a mounting platform 12, which is connected to the packing gland 2 by bolts to press the packing into the packing cavity 13, the installation of the packing gland 2 is simple and convenient, and it is also convenient to press the packing into the packing cavity 13. In particular, when the first connecting part 11 is an inclined surface, the packing cavity 13 can be close to the upper end of the first connecting part 11, which further facilitates the valve stem 30 to pass through the packing cavity 13 so that the ball 32 can be installed into the mounting cavity 17.

[0021] To improve the sealing performance of the valve body, a bushing is usually provided inside the valve body 1 and the valve cover 5. Since the inner wall surfaces of the valve body 1 and the valve cover 5 are provided with a first annular groove 15 and a strip groove 14, the bushing can be formed in the first annular groove 15 and the strip groove 14, so that the bushing can be more stably located inside the valve body 1 and the valve cover 5.

[0022] Furthermore, a second annular groove 16 is provided on the facing surfaces of the valve body 1 and the valve cover 5. Since the first annular groove 15 and the strip groove 14 can fix the bushing at one end of the valve body 1 and the valve cover 5, the second annular groove 16 can fix the bushing at the other end, so as to ensure that the bushing can be stably located in the valve body 1 and in the valve cover 5.

[0023] Based on the above solution, since the outer wall of the valve core 3 is provided with a protective sleeve 4, the protective sleeve 4 can contact the bushing inside the valve cover 5 and valve body 1, thereby improving the sealing performance between the valve core 3 and the valve cover 5 and valve body 1, and reducing the wear of the ball 32 to extend the service life of the equipment.

[0024] Furthermore, since the sphere 32 is provided with a through hole 33 and the valve stem 30 is provided with a waist-shaped groove 31 on its outer wall, after the protective sleeve 4 is formed on the sphere 32, both the through hole 33 and the waist-shaped groove 31 can expand the contact area between the sphere 32 and the protective sleeve 4, so as to further ensure the stability of the protective sleeve 4 during operation.

[0025] The embodiments of this utility model have been described in detail above with reference to the accompanying drawings, but this utility model is not limited to the described embodiments. For those skilled in the art, various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of this utility model, and these variations still fall within the protection scope of this utility model.

Claims

1. A double flanged bevel ball valve, characterized in that: It includes a valve body (1) and a valve cover (5). The valve body (1) is provided with a mounting cavity (17) for mounting a valve core (3), and the valve body (1) is also provided with a packing cavity (13) connected and communicating with the mounting cavity (17). The valve core (3) includes a ball (32) located in the mounting cavity (17) and a valve stem (30) disposed on the ball (32). After the valve stem (30) obliquely penetrates the packing cavity (13), the packing is pressed into the packing cavity (13) by the provided packing gland (2). The mounting cavity (17) has a first connecting part (11) on the side facing the valve cover (5), and the valve cover (5) has a second connecting part (6) on the side facing the valve body (1). An angle a is formed between the outer wall of the first connecting part (11) and the central axis of the valve body (1), and an angle b is formed between the second connecting part (6) and the central axis of the valve cover (5); wherein the sum of the angles a and b is 180 degrees, and the angle a is an acute angle greater than 60 degrees.

2. The beveled ball valve with a middle flange according to claim 1, characterized in that: The valve body (1) is also provided with a mounting platform (12), which is connected to the packing gland (2) by bolts to press the packing into the packing cavity (13).

3. The bevel-faced flanged ball valve according to claim 1, wherein: The inner wall surfaces of the valve body (1) and the valve cover (5) are provided with a first annular groove (15) and a strip groove (14).

4. A ball valve according to claim 3, wherein: The valve body (1) and the valve cover (5) are both provided with a second annular groove (16) on their opposing surfaces.

5. The bevel ball valve according to any one of claims 1-4, wherein: The outer wall of the valve core (3) is provided with a protective sleeve (4).

6. A ball valve with bevel face on the middle flange according to claim 5, characterized in that: The sphere (32) is also provided with a through hole (33) on its spherical surface, and the valve stem (30) is also provided with a waist-shaped groove (31) on its outer wall surface.

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