One-piece ball valve

Abstract

The utility model discloses a one-piece ball valve, which is applied in the field of valve body equipment, solves the technical problem that the existing valve body is not high in working and using reliability, and adopts the technical scheme that the one-piece ball valve comprises a valve body, a valve cavity through groove is formed in the middle of the valve body, and a ball core block is arranged in the middle of the valve cavity through groove; the valve body is provided with a valve rod for driving the ball core block to rotate, and is characterized in that valve seat suites movably matched with the ball core block are arranged in the valve cavity through groove, and the valve seat suites are respectively arranged on the two sides of the ball core block; the valve seat sleeve piece comprises a valve seat block movably connected with the groove wall of the valve cavity through groove and a valve seat limiting sleeve block arranged on the side, away from the ball core block, of the valve seat block, a flow guide groove connected with the ball core block in a sleeved mode is formed in the middle of the valve seat block, and a threaded step block is arranged on the side wall of the end, away from the ball core block, of the valve seat block. And the valve seat limiting sleeve block is sleeved with the valve cavity through groove. The ball valve has the technical effect that the working performance stability of the ball valve can be effectively improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to valve body equipment field, especially relate to a one-piece ball valve. BACKGROUND

[0002] Ball valve, the opening and closing piece is driven by the valve stem and rotates around the ball valve axis, and the valve can flexibly control the flow of medium, the flow of medium is switched, and the ball valve is mainly used for cutting, distribution and changing the flow direction of medium in the pipeline.

[0003] The Chinese patent with publication number CN219841073U discloses a one-piece ball valve based on pressure balance, which comprises a valve shell, a first sealing gasket, a second sealing gasket and a sealing ball. The first sealing gasket, the second sealing gasket and the sealing ball are installed in the valve shell, and the first sealing gasket and the second sealing gasket are located on both sides of the sealing ball. The first sealing gasket and the second sealing gasket are in sealing abutment with the sealing ball. An axle rod is installed on the upper end of the sealing ball, and a handle is installed on the axle rod. A detachable balance assembly is provided, which comprises a first support ring and a second support ring movably connected in the valve shell. The first support ring is in abutment with the first sealing gasket.

[0004] The valve piece realizes pressure balance and flexible disassembly through the detachable first support ring and second support ring structure. However, the first support ring and the second support ring in the valve piece are connected with the internal threads of the valve cavity, and a connecting rod is fixedly connected with the inner walls of the first support ring and the second support ring during assembly. The connecting rod is exposed to the conveying medium, and is prone to damage due to long-term pressure impact, which affects the safety of the pipeline. In addition, the repeated impact of the conveying medium on the connecting rod part easily causes the loosening of the first support ring and the second support ring, which cannot guarantee the reliable working performance requirements. Utility model content

[0005] The utility model aims to provide a one-piece ball valve, which has the advantages of ensuring the stability and reliability of the internal components of the valve body during operation.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a one-piece ball valve, comprising a valve body, a valve cavity through groove in the middle of the valve body, a ball core block in the middle of the valve cavity through groove, a valve stem on the valve body for driving the ball core block to rotate, a valve seat assembly in the valve cavity through groove for movably engaging with the ball core block, the valve seat assembly being disposed on both sides of the ball core block, the valve seat assembly including a valve seat block movably connected to the groove wall of the valve cavity through groove and a valve seat limiting sleeve disposed on the side of the valve seat block away from the ball core block, the middle of the valve seat block being provided with a ball core block for engaging with the ball core block. The valve seat block has a flow guide groove with a core block sleeve. The side wall of the valve seat block away from the ball core block is provided with a threaded step block. The valve seat limiting sleeve is sleeved with the valve cavity through groove. The end of the valve seat limiting sleeve that is movably connected to the valve seat block is provided with an internal threaded sleeve that is threadedly sleeved with the threaded step block. The side wall of the valve seat limiting sleeve is also provided with multiple snap-fit ​​blocks. The inner wall of the groove of the valve cavity through groove is provided with a limiting snap-fit ​​groove for snap-fit ​​blocks to snap-fit. The end of the valve seat limiting sleeve away from the ball core block is also provided with a flange gasket block. The groove of the valve cavity through groove is provided with a limiting insert groove for flange gasket block to fit.

[0007] Preferably, the outer sidewall of the valve seat limiting sleeve is provided with multiple sealing ring grooves, and an elastic sealing gasket is embedded in the sealing ring groove.

[0008] Preferably, the side of the guide groove that contacts the ball core block is provided with an arc-shaped sleeve groove, the groove wall of the arc-shaped sleeve groove is provided with an adjusting guide ridge, and the ball core block is provided with an adjusting guide groove that cooperates with the adjusting guide ridge.

[0009] Preferably, a ball support is provided at the bottom of the valve cavity through groove below the ball core block.

[0010] Preferably, the end of the valve seat block that contacts the valve seat limiting sleeve block is also provided with an auxiliary slot, and the end of the valve seat limiting sleeve block is provided with an auxiliary protrusion that cooperates with the auxiliary slot.

[0011] Preferably, the plurality of the snap-fit ​​blocks are evenly distributed along the circumference of the valve seat limiting sleeve.

[0012] In summary, this utility model has the following beneficial effects:

[0013] 1. By combining the ball core block and the valve seat assembly, the stability of the assembly and use of the ball core block and the valve seat assembly can be effectively improved. While ensuring stable and uniform fluid flow performance, the separate movable arrangement of the valve seat block and the valve seat limiting sleeve in the valve seat assembly ensures a stable connection between the valve seat block and the ball core block. At the same time, the valve seat limiting support block satisfies the tightness and limiting effect of the valve seat block, effectively improving the reliability of the assembly and use of the valve seat block, thereby improving the overall reliability of the valve body. Attached Figure Description

[0014] Figure 1This is a cross-sectional view of the internal structure assembly of the ball valve in the embodiment;

[0015] Figure 2 yes Figure 1 Enlarged view of A in the middle;

[0016] Figure 3 yes Figure 1 A magnified view of B in the middle.

[0017] Reference numerals: 1. Valve body; 2. Valve cavity through groove; 3. Ball core block; 4. Valve stem; 5. Valve seat block; 6. Valve seat limiting sleeve block; 7. Guide groove; 8. Threaded step block; 9. Internal thread sleeve block; 10. Snap-fit ​​block; 11. Limiting groove; 12. Flange gasket block; 13. Limiting groove; 14. Sealing ring groove; 15. Elastic sealing gasket; 16. Arc-shaped sleeve groove; 17. Adjusting guide ridge; 18. Adjusting guide groove; 19. Ball core support; 20. Auxiliary groove; 21. Auxiliary protrusion. Detailed Implementation

[0018] The present invention will be further described in detail below with reference to the accompanying drawings.

[0019] Example: A one-piece ball valve, such as Figure 1 As shown, the valve includes a valve body 1, a valve cavity through groove 2 in the middle of the valve body 1, a ball core block 3 in the middle of the valve cavity through groove 2, and a valve stem 4 on the valve body 1 to drive the ball core block 3 to rotate. During the operation of the ball valve, the user drives the ball core block 3 to switch the valve cavity through groove 2 on and off by rotating the valve stem 4.

[0020] The valve cavity through groove 2 is provided with a valve seat assembly that movably engages with the ball core block 3. The valve seat assembly is located on both sides of the ball core block 3, which can ensure the stability of the ball core block 3 during rotation and switching. The valve seat assembly includes a valve seat block 5 that is movably connected to the groove wall of the valve cavity through groove 2 and a valve seat limiting sleeve 6 located on the side of the valve seat block 5 away from the ball core block 3. The valve seat limiting sleeve 6 is movably connected to the valve seat block 5, which can limit the valve seat block 5 and ensure a tight fit between the ball core block 3 and the valve seat block 5.

[0021] like Figure 1 , Figure 2 and Figure 3As shown, the valve seat block 5 has a flow guide groove 7 in the middle that fits into the ball core block 3. The side of the flow guide groove 7 that contacts the ball core block 3 has an arc-shaped fitting groove 16 to ensure the reliability of rotational friction between the ball core block 3 and the valve seat block 5. With repeated opening and closing, the relative rotational stability between the ball core block 3 and the arc-shaped fitting groove 16 cannot be guaranteed. The groove wall of the arc-shaped fitting groove 16 has an adjusting guide rib 17. The ball core block 3 has an adjusting guide groove 18 that cooperates with the adjusting guide rib 17. The cooperation between the adjusting guide groove 18 and the adjusting guide rib 17 improves the rotational stability of the ball core block 3. The bottom of the valve cavity through groove 2 below the ball core block 3 has a ball core support 19 to keep the rotation of the ball core block 3 stable and consistent. It can also effectively withstand the impact of the liquid flow of the conveying medium through the ball core block 3, and improve the impact resistance of the combination of the ball core block 3 and the valve seat block 5.

[0022] To achieve a secure and limited position of the valve seat block 5, a threaded step block 8 is provided on the side wall of the valve seat block 5 away from the ball core block 3. The valve seat limiting sleeve 6 is sleeved with the valve cavity through groove 2. The end of the valve seat limiting sleeve 6 that is movably connected to the valve seat block 5 is provided with an internal threaded sleeve 9 that is threadedly engaged with the threaded step block 8. During the assembly of the ball valve, the threaded step block 8 and the internal threaded sleeve 9 achieve threaded locking. The end of the valve seat block 5 that contacts the valve seat limiting sleeve 6 is also provided with an auxiliary groove 20. The end of the valve seat limiting sleeve 6 is provided with an auxiliary protrusion 21 that cooperates with the auxiliary groove 20. As the valve seat block 5 and the valve seat limiting sleeve 6 are screwed together, the auxiliary groove 20 and the auxiliary protrusion 21 engage, which not only improves the structural strength of the valve seat block 5 and the valve seat limiting sleeve 6, but also improves the tightness of the connection. Furthermore, since the valve seat block 5 is a wear-resistant and vulnerable part, the split design also facilitates disassembly and maintenance during the overall assembly and use of the ball valve.

[0023] Multiple snap-fit ​​blocks 10 are also provided on the side wall of the valve seat limiting sleeve 6. The inner wall of the groove of the valve cavity through groove 2 is provided with limiting grooves 11 for snap-fit ​​blocks 10 to snap into. The user pushes the snap-fit ​​blocks 10 into the grooves at both ends of the valve cavity through groove 2 to complete the snap-fit ​​positioning between the snap-fit ​​blocks 10 and the limiting grooves 11. At the same time, the valve seat block 5 is fitted with the ball core block 3. The multiple snap-fit ​​blocks 10 are evenly distributed around the circumference of the valve seat limiting sleeve 6, which helps to improve the uniformity of the force on the valve seat limiting sleeve 6 and ensures the smooth passage of the conveying medium in the valve cavity through groove 2.

[0024] To further limit and tighten the valve seat limiting sleeve 6, a flange gasket block 12 is provided at the end of the valve seat limiting sleeve 6 away from the ball core block 3. The groove of the valve cavity through groove 2 is provided with a limiting groove 13 for the flange gasket block 12 to fit into. As the entire valve seat limiting sleeve 6 is inserted into the valve cavity through groove 2, the end flange gasket block 12 is fitted with the limiting groove 13. When the ball valve is used in a sleeve connection, the external pipe flange block is sleeved with the end of the valve cavity through groove 2, which can further press and limit the flange gasket block 12, always maintaining the stable and tight limiting of the valve seat limiting sleeve 6 on the valve seat block 5. Multiple sealing ring grooves 14 are provided on the outer side wall of the valve seat limiting sleeve 6. Elastic sealing gaskets 15 are embedded in the sealing ring grooves 14, which further improves the assembly compactness between the valve seat limiting sleeve 6 and the valve cavity through groove 2, and also improves the impact resistance of the liquid flow through which the conveying medium passes, ensuring the durability and reliability of the ball valve.

[0025] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

Claims

1. A one-piece ball valve, comprising a valve body (1), wherein a valve cavity through groove (2) is provided in the middle of the valve body (1), a ball core block (3) is provided in the middle of the valve cavity through groove (2), and a valve stem (4) for driving the ball core block (3) to rotate is provided on the valve body (1), characterized in that: The valve cavity through groove (2) is provided with a valve seat assembly that movably engages with the ball core block (3). The valve seat assembly is located on both sides of the ball core block (3). The valve seat assembly includes a valve seat block (5) that is movably connected to the groove wall of the valve cavity through groove (2) and a valve seat limiting sleeve (6) located on the side of the valve seat block (5) away from the ball core block (3). The valve seat block (5) has a flow guide groove (7) in the middle that engages with the ball core block (3). The side wall of the valve seat block (5) away from the ball core block (3) has a threaded step block (8). The valve seat limiting sleeve (6) and the valve cavity through groove (2) are connected. The valve seat limiting sleeve (6) is movably connected to the valve seat block (5) at one end, and is provided with an internal threaded sleeve (9) that is threadedly connected to the threaded step block (8). The side wall of the valve seat limiting sleeve (6) is also provided with multiple snap-fit ​​blocks (10). The inner wall of the groove of the valve cavity through groove (2) is provided with a limiting snap-fit ​​groove (11) for snap-fit ​​blocks (10) to snap-fit. The end of the valve seat limiting sleeve (6) away from the ball core block (3) is also provided with a flange gasket block (12). The groove of the valve cavity through groove (2) is provided with a limiting insert groove (13) for flange gasket block (12) to fit.

2. A one-piece ball valve according to claim 1, characterized in that: The outer sidewall of the valve seat limiting sleeve (6) is provided with multiple sealing ring grooves (14), and an elastic sealing gasket (15) is embedded in the sealing ring groove (14).

3. A one-piece ball valve according to claim 1, characterized in that: The side of the guide groove (7) that contacts the ball core block (3) is provided with an arc-shaped sleeve groove (16), the groove wall of the arc-shaped sleeve groove (16) is provided with an adjusting guide ridge (17), and the ball core block (3) is provided with an adjusting guide groove (18) that cooperates with the adjusting guide ridge (17).

4. A one-piece ball valve according to claim 1, characterized in that: The bottom of the valve cavity through groove (2) below the ball core block (3) is provided with a ball core support (19).

5. A one-piece ball valve according to claim 1, characterized in that: The valve seat block (5) is provided with an auxiliary slot (20) at one end that contacts the valve seat limiting sleeve block (6), and the end of the valve seat limiting sleeve block (6) is provided with an auxiliary protrusion (21) that cooperates with the auxiliary slot (20).

6. A one-piece ball valve according to claim 1, characterized in that: Multiple snap-fit ​​blocks (10) are evenly distributed along the circumference of the valve seat limiting sleeve (6).

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