Welded ball valve

Abstract

The utility model relates to the technical field of welding ball valves, in particular to a welding ball valve which comprises a welding ball valve body and fixing rings, the fixing rings are fixedly connected to the outer side walls, close to the two ends, of the welding ball valve body, and a plurality of movable rods are evenly distributed and movably connected to the fixing rings. The ends, close to the center of the welding ball valve body, of the multiple movable rods on the same side are fixedly connected with the same annular plate. The baffle, the limiting plate, the movable rod, the fixing ring, the bolt and the nut are arranged, the annular plate and the fixing ring are fixedly connected through the bolt and the nut in the using process, at the moment, the baffle moves to a weld joint to seal the connecting position, and the stability of the connecting position is improved through the combined action of the limiting plate and the movable rod; damage caused by height difference or stress effect is reduced, and the use effect is good. The utility model has the advantages of being convenient to install and use.

Description

Technical Field

[0001] The utility model relates to a valve, in particular to a welding ball valve. Background Art

[0002] Welded ball valves are widely used in various fields, among which fully welded ball valves are widely used in various pipeline equipment such as city gas, city heating, petrochemical, shipbuilding, steel, pressure regulating stations, power plants, etc.

[0003] At present, when installing the welded ball valve in the prior art, it is necessary to use external equipment to complete the positioning between the welded ball valve and the pipeline to ensure the accuracy of the welded ball valve during installation. In addition, after the welding and installation of the welded ball valve is completed, the height difference or stress between the welded ball valve and the pipeline is easily affected, resulting in fracture and damage at the weld, thereby reducing the performance of the welded ball valve. Based on the above reasons, the utility model proposes a welded ball valve. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a welding ball valve to overcome the deficiencies in the prior art.

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

[0006] A welded ball valve comprises a welded ball valve body, wherein the outer side walls of the welded ball valve body near both ends are fixedly connected with fixing rings, the fixing rings are evenly distributed and movably connected with a plurality of movable rods, a plurality of movable rods on the same side are fixedly connected with the same annular plate at one end near the center of the welded ball valve body, the annular plate is sleeved on the outer side wall of the welded ball valve body, the ends of the movable rods away from the annular plate are fixedly connected with limiting plates, the side walls of a plurality of the movable rods are fixedly connected with the same baffle, and the annular plate and the fixing ring are fixedly connected.

[0007] As a preferred technical solution of the utility model, the welded ball valve body includes a shell, a valve core is arranged at the center of the inner cavity of the shell, a valve stem is installed on the top surface of the valve core, and the top end of the valve stem passes through the shell and is installed with a driving member.

[0008] As a preferred technical solution of the utility model, a plurality of through holes are evenly distributed on the fixing ring and the circular ring plate, and a same bolt is inserted into two adjacent through holes, and a nut is threadedly connected to the bolt.

[0009] As a preferred technical solution of the utility model, the limit plate is arranged in an arc shape, and the inner wall of the limit plate is arranged in close contact with the side walls at both ends of the welded ball valve body.

[0010] As a preferred technical solution of the utility model, the inner side wall of the limiting plate away from the movable rod is chamfered.

[0011] As a preferred technical solution of the utility model, the baffle is arranged in a circular ring shape, and the inner diameter of the baffle is arranged to be the same as the outer diameters of the two ends of the welded ball valve body.

[0012] As a preferred technical solution of the utility model, two sealing rings are symmetrically fixedly connected to the inner side wall of the baffle.

[0013] The utility model provides a welded ball valve, which has the following beneficial effects:

[0014] 1. The utility model is provided with a limit plate, a movable rod and a circular ring plate. When the welding ball valve body is installed, the limit plate is placed on the outer wall of the pipeline through the movement of the circular ring plate, so as to realize the positioning between the welding ball valve body and the pipeline, and facilitate the welding operation between the welding ball valve body and the pipeline;

[0015] 2. The utility model is provided with a baffle, a limit plate, a movable rod, a fixing ring, bolts and nuts. When in use, the circular ring plate and the fixing ring are fixedly connected by the bolts and nuts. At this time, the baffle moves to the weld to close the connection position, and the stability of the connection position is improved by the joint action of the limit plate and the movable rod, thereby reducing damage caused by height difference or stress, and the use effect is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0017] Figure 1 It is a three-dimensional structural schematic diagram of the utility model at one angle;

[0018] Figure 2 It is a three-dimensional structural schematic diagram of the utility model as a whole from another angle;

[0019] Figure 3 It is a schematic diagram of the internal cross-section three-dimensional structure of the utility model;

[0020] Figure 4 It is a three-dimensional structural schematic diagram of one end of a welded ball valve body of the utility model.

[0021] In the figure: 1. welded ball valve body; 2. fixing ring; 3. movable rod; 4. circular ring plate; 5. limit plate; 6. baffle plate; 7. shell; 8. valve core; 9. valve stem; 10. driving part; 11. through hole; 12. bolt; 13. nut; 14. sealing ring. DETAILED DESCRIPTION

[0022] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0023] Example: Figure 1-4 As shown, a welded ball valve comprises a welded ball valve body 1, the welded ball valve body 1 comprises a shell 7, a valve core 8 is arranged at the center of the inner cavity of the shell 7, a valve stem 9 is installed on the top surface of the valve core 8, and the top end of the valve stem 9 passes through the shell 7 and is installed with a driving member 10, so as to realize the function of the welded ball valve;

[0024] A fixing ring 2 is fixedly connected to the outer side wall of the welded ball valve body 1 near both ends, and a plurality of movable rods 3 are evenly distributed and movably connected to the fixing ring 2. A plurality of movable rods 3 on the same side are fixedly connected to the same annular plate 4 near one end of the center of the welded ball valve body 1. The annular plate 4 is sleeved on the outer side wall of the welded ball valve body 1. The ends of the movable rods 3 away from the annular plate 4 are fixedly connected to the limiting plate 5. The side walls of the plurality of movable rods 3 are fixedly connected to the same baffle 6, which can realize the positioning and protection operation between the welded ball valve body 1 and the external pipeline, facilitate the installation of the welded ball valve body 1 and improve the stability of the use of the welded ball valve body 1;

[0025] The limit plate 5 is arranged in an arc shape, and the inner wall of the limit plate 5 is arranged in close contact with the side walls of the two ends of the welded ball valve body 1. The inner side wall of the limit plate 5 away from the movable rod 3 is chamfered to facilitate the use of the limit plate 5;

[0026] The baffle 6 is arranged in a circular ring shape, and the inner diameter of the baffle 6 is arranged to be the same as the outer diameter of the two ends of the welded ball valve body 1. Two sealing rings 14 are symmetrically fixedly connected to the inner wall of the baffle 6. On the one hand, the baffle 6 is sleeved at the weld to improve the stability of the connection. On the other hand, the sealing ring 14 improves the sealing of the connection and improves the protection.

[0027] The circular ring plate 4 and the fixing ring 2 are fixedly connected, and a plurality of through holes 11 are evenly distributed on the fixing ring 2 and the circular ring plate 4. A same bolt 12 is inserted into two adjacent through holes 11, and a nut 13 is threadedly connected to the bolt 12, so that the fixed installation operation between the circular ring plate 4 and the fixing ring 2 can be realized.

[0028] When the valve body 1 is in the state of being pressed down, the stopper 5 is tightened to prevent the valve body 1 from being loosened and the stopper 5 is loosened, so that the valve body 1 is in the state of being loosened and the stopper 5 is loosened.

[0029] Finally, it should be noted that in the description of the present invention, it should be noted that the terms "vertical", "up", "down", "horizontal", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0030] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" 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 indirectly connected 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 according to specific circumstances.

[0031] The above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein with equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A welded ball valve, comprising a welded ball valve body (1), characterized in that: The outer side walls of the welded ball valve body (1) near both ends are fixedly connected to a fixing ring (2), and a plurality of movable rods (3) are evenly distributed and movably connected to the fixing ring (2). A plurality of movable rods (3) on the same side are fixedly connected to a same annular plate (4) at one end near the center of the welded ball valve body (1), and the annular plate (4) is sleeved on the outer side wall of the welded ball valve body (1). A limit plate (5) is fixedly connected to one end of the movable rod (3) away from the annular plate (4), and a same baffle (6) is fixedly connected to the side walls of a plurality of movable rods (3), and the annular plate (4) and the fixing ring (2) are fixedly connected.

2. A welded ball valve according to claim 1, characterized in that: The welded ball valve body (1) comprises a shell (7), a valve core (8) is arranged at the center of the inner cavity of the shell (7), a valve stem (9) is installed on the top surface of the valve core (8), and the top end of the valve stem (9) passes through the shell (7) and is installed with a driving member (10).

3. A welded ball valve according to claim 1, characterized in that: The fixing ring (2) and the annular plate (4) are evenly distributed with a plurality of through holes (11), and a bolt (12) is inserted into two adjacent through holes (11), and a nut (13) is threadedly connected to the bolt (12).

4. A welded ball valve according to claim 1, characterized in that: The limiting plate (5) is arranged in an arc shape, and the inner wall of the limiting plate (5) is arranged in close contact with the side walls at both ends of the welded ball valve body (1).

5. A welded ball valve according to claim 4, characterized in that: The inner side wall of the limiting plate (5) away from the movable rod (3) is provided with a chamfer.

6. A welded ball valve according to claim 1, characterized in that: The baffle (6) is arranged in a circular ring shape, and the inner diameter of the baffle (6) is arranged to be the same as the outer diameters of the two ends of the welded ball valve body (1).

7. A welded ball valve according to claim 1, characterized in that: Two sealing rings (14) are symmetrically fixedly connected to the inner side wall of the baffle (6).

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