All-welded ball valve convenient to connect with pipeline
By setting rubber rings and insulating rings on the outer wall of the round ring of the fully welded ball valve, the static friction and welding area are increased, and the unstable position and medium leakage of the fully welded ball valve when connected to the pipe is solved, and stable connection and efficient welding are achieved.
Patent Information
- Application Number
- CN202422472721.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-12
- Publication Date
- 2025-07-11
- Estimated Expiration
- 2034-10-12
AI Technical Summary
When connected to the pipe, the fully welded ball valve has problems such as position change and inconvenient operation, especially when the position is unstable before welding, which affects the welding efficiency and effect, and at the same time, the risk of medium leakage is high.
A rubber ring is installed on the outer wall of the round ring of the fully welded ball valve, and a rubber ring is embedded in the ring groove, and a static friction is generated with the inner wall of the round groove to increase the static friction force to prevent rotation; an insulating ring is installed on the outer wall of the rubber ring to prevent heat transfer, and the outer wall of the round ring is beveled to cut the welding surface to increase the welding area.
It improves the connection stability between the valve body and the pipeline, prevents medium leakage, enhances welding effect and connection firmness, and ensures convenient operation.
Smart Images
Figure CN223090042U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of ball valves, and more specifically, to a fully welded ball valve that is convenient to connect with pipelines. Background Art
[0002] The fully welded ball valve is a type of ball valve. Its valve body seals all joints by welding to obtain a valve body with the fewest leakage points. The connection methods between the fully welded ball valve and pipelines include flange connection, threaded connection, and welding. Compared with welding, flange connection and threaded connection are more likely to have leakage points. To ensure the sealing performance, in the prior art, both ends of the fully welded ball valve are usually welded to the corresponding pipelines. Therefore, conical rings and conical grooves that can be inserted into each other and fully fit are respectively machined on the end faces of both ends of the fully welded ball valve and the corresponding pipelines. However, there are defects. First, the fit between the outer wall of the conical ring and the inner wall of the conical groove is a hard seal. Due to the uneven weight distribution of the fully welded ball valve and the relatively smooth outer wall of the conical ring and the inner wall of the conical groove, relative rotation is likely to occur, which may cause the position change of the fully welded ball valve before welding, affecting the welding efficiency and welding effect. Second, after welding, the handle part of the fully welded ball valve cannot be in the position that the operator is used to, resulting in inconvenience for the operator. If an actuator or other driving mechanism is connected to the valve stem, it is likely to cause problems such as changes in the installation space of the actuator or other driving mechanisms, increased installation difficulty, and affecting the operator's use. Summary of the Utility Model
[0003] Aiming at the deficiencies of the prior art, the purpose of the utility model is to provide a fully welded ball valve with accurate positioning and convenient connection with pipelines.
[0004] To achieve the above purpose, the utility model provides the following technical solution: A fully welded ball valve that is convenient to connect with pipelines, including a valve body and pipelines connected to the ends of the valve body. Conical rings with outer walls coaxial with the axis of the valve body flow channel and inclined outer walls are respectively arranged on the end faces of both ends of the valve body. A conical groove that can accommodate the conical ring and fits with the outer wall of the conical ring is arranged at the end of the pipeline. An accommodation ring groove coaxial with the conical ring is arranged on the outer wall of the conical ring. A rubber ring that can fully fit with the groove wall of the conical groove is arranged in the accommodation ring groove. The static friction generated between the rubber ring and the inner wall of the conical groove makes it difficult for the valve body and the pipeline to rotate relative to each other.
[0005] As a further improvement of the utility model, a heat insulation ring coaxial with the rubber ring and sleeved outside the rubber ring is also arranged in the accommodation ring groove. The end face of the heat insulation ring facing the pipeline is flush with the outer wall of the conical ring.
[0006] As a further improvement of the utility model, the end of the heat insulation ring extending into the accommodation ring groove is closer to the position of the ball core than the end of the rubber ring extending into the accommodation ring groove.
[0007] As a further improvement of the present utility model, a welding surface is provided on the outer wall of the frustum ring, and the included angle between the welding surface and the vertical plane is greater than the included angle between the outer wall of the frustum ring and the vertical plane.
[0008] The beneficial effects of the present utility model: The static friction generated between the rubber ring and the inner wall of the frustum groove makes it difficult for the valve body and the pipeline to rotate relative to each other. Such a design can increase the static friction force between the pipeline and the valve body compared with the design of only fitting the outer wall of the frustum ring to the frustum groove, thereby preventing the valve body from rotating relative to the pipeline, and the connection stability between the valve body and the pipeline is better. At the same time, when the medium inside the pipeline is not cleaned up, the rubber ring can also prevent the medium from leaking out and affecting the welding effect, indirectly improving the welding effect. BRIEF DESCRIPTION OF THE DRAWINGS
[0009] Figure 1 is a schematic structural diagram when the present utility model is connected to a pipeline;
[0010] Figure 2 is Figure 1 an enlarged view of part A in
[0011] Figure 3 is Figure 2 a state diagram when not welded to the pipeline.
[0012] Reference numerals: 1, valve body; 2, pipeline; 3, frustum ring; 4, frustum groove; 5, receiving ring groove; 6, rubber ring; 7, heat insulation ring; 8, welding surface. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0013] The following further details the present utility model in conjunction with the drawings and embodiments. The same reference numerals are used for the same components.
[0014] Referring to Figures 1 to 3 as shown, a fully welded ball valve convenient for connecting to a pipeline in this embodiment includes a valve body 1 and a pipeline 2 connected to the end of the valve body 1. Circular truncated cone rings 3 with outer walls coaxial with the flow path axis of the valve body 1 and inclined outer walls are respectively provided on both end faces of the valve body 1. A circular truncated cone groove 4 capable of receiving the circular truncated cone ring 3 and fitting with the outer wall of the circular truncated cone ring 3 is provided at the end of the pipeline 2;
[0015] Based on the aforementioned prior art, a receiving ring groove 5 coaxial with the circular truncated cone ring 3 is formed on the outer wall of the circular truncated cone ring 3. A rubber ring 6 matching the inner cavity of the receiving ring groove 5 is placed in the receiving ring groove 5. The end face of the rubber ring 6 near the opening of the receiving ring groove 5 has the same inclination as the inner wall of the circular truncated cone groove 4, and the end face of the rubber ring 6 that can fit with the inner wall of the circular truncated cone groove 4 can be processed with patterns for increasing friction;
[0016] Before the pipeline 2 is welded to the valve body 1, the end of the rubber ring 6 facing the same direction as the open end of the receiving annular groove 5 slightly extends out of the receiving annular groove 5. After the end of the pipeline 2 is inserted into the valve body 1 in place, the end face of the rubber ring 6 closely adheres to the inner wall of the frustum groove 4 and the rubber ring 6 undergoes elastic deformation under extrusion. The inner wall of the frustum groove 4 simultaneously adheres to the outer wall of the rubber ring 6 and the frustum ring 3;
[0017] Such a design can increase the static friction force between the pipeline 2 and the valve body 1 compared to the design where only the outer wall of the frustum ring 3 is in contact with the frustum groove 4, thereby preventing the valve body 1 from rotating relative to the pipeline 2. The connection stability between the valve body 1 and the pipeline 2 is better. At the same time, when the medium inside the pipeline 2 is not cleaned up, the rubber ring 6 can also prevent the medium from leaking out and affecting the welding effect, indirectly improving the welding effect.
[0018] As a specific implementation of the improvement, when the valve body 1 and the pipeline 2 are welded, the end of the valve body 1 will conduct heat and heat up, which is likely to cause the rubber ring 6 to lose its performance due to high temperature. To solve the above problems, referring to Figure 2 and Figure 3 as shown, the inner cavity of the receiving annular groove 5 is enlarged and a heat insulation ring 7 is sleeved outside the rubber ring 6. The rubber ring 6 and the heat insulation ring 7 as a whole match the inner cavity of the receiving annular groove 5. After the heat insulation ring 7 is installed in place in the receiving annular groove 5, the end face of the heat insulation ring 7 facing the pipeline 2 is flush with the outer wall of the frustum ring 3. When the pipeline 2 and the valve body 1 are installed in place and welded, the heat insulation ring 7 can isolate the heat transfer from the end of the valve body 1 to the rubber ring 6. Such a design can effectively ensure the stability of the structure and properties of the rubber ring 6.
[0019] As a specific implementation of the improvement, referring to Figure 2 and Figure 3 as shown, the bottom of the receiving annular groove 5 is made into a stepped shape. After the heat insulation ring 7 and the rubber ring 6 are both installed in place, the end of the heat insulation ring 7 extending into the receiving annular groove 5 is closer to the position of the ball core than the end of the rubber ring 6 extending into the receiving annular groove 5. Such a design can further improve the heat insulation effect of the heat insulation ring 7, further reduce the possibility of heat bypassing the heat insulation ring 7 and reaching the rubber ring 6, and further ensure the stability of the structure and properties of the rubber ring 6.
[0020] As a specific implementation of the improvement, if the outer wall of the frustum ring 3 is fully adhered to the inner wall of the frustum groove 4, only the outermost edges of the frustum ring 3 and the frustum groove 4 can be welded during the welding operation, and the welding firmness is poor. To solve the above problems, referring to Figure 2 and Figure 3As shown in the figure, the outer peripheral part of the frustum ring 3 located outside the heat insulation ring 7 is processed to form a welded surface 8 at the bevel cut on the outer wall of the frustum ring 3. The angle between the welded surface 8 and the vertical plane is greater than the angle between the outer wall of the frustum ring 3 and the vertical plane. When the frustum ring 3 and the frustum groove 4 are in contact with each other, a solder groove for accommodating the solder flux is formed between the welded surface 8 and the inner wall of the frustum groove 4. Such a design not only facilitates the use of the solder flux, but also increases the welding area between the frustum ring 3 and the frustum groove 4, thereby making the connection between the valve body 1 and the pipeline 2 after welding more firm.
[0021] The above description is only a preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. Any technical solutions falling within the idea of the present invention belong to the protection scope of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements should also be regarded as the protection scope of the present invention.
Claims
1. A fully welded ball valve facilitating connection with pipelines, comprising a valve body (1) and a pipeline (2) connected to the end of the valve body (1). Circular truncated cone rings (3) with outer walls coaxial with the flow path axis of the valve body (1) and inclined outer walls are respectively arranged on both end faces of the valve body (1). A circular truncated cone groove (4) capable of inserting the circular truncated cone ring (3) and fitting with the outer wall of the circular truncated cone ring (3) is arranged at the end of the pipeline (2), and it is characterized in that: An accommodation ring groove (5) coaxial with the frustum ring (3) is arranged on the outer wall of the frustum ring (3). A rubber ring (6) capable of fully fitting with the groove wall of the frustum groove (4) is arranged in the accommodation ring groove (5). The static friction generated between the rubber ring (6) and the inner wall of the frustum groove (4) makes it difficult for the valve body (1) and the pipeline (2) to rotate relative to each other.
2. The fully welded ball valve according to claim 1, which is convenient for connection with pipelines, is characterized in that: A heat insulation ring (7) coaxial with the rubber ring (6) and sleeved outside the rubber ring (6) is further arranged in the accommodation ring groove (5). The end face of the heat insulation ring (7) facing the pipeline (2) is flush with the outer wall of the frustum ring (3).
3. The fully welded ball valve according to claim 2, which is convenient for connection with pipelines, is characterized in that: One end of the heat insulation ring (7) extending into the accommodation ring groove (5) is closer to the position of the ball core than one end of the rubber ring (6) extending into the accommodation ring groove (5).
4. A fully welded ball valve facilitating connection with a pipeline according to claim 1 or 2 or 3, characterized in that: A welding surface (8) is arranged on the outer wall of the frustum ring (3). The included angle between the welding surface (8) and the vertical plane is greater than the included angle between the outer wall of the frustum ring (3) and the vertical plane.