压力自补偿球阀铸件
By combining the design of the clamping seat and the mounting ring, along with the limiting groove and the elastic limiting component, the problem of uneven sealing caused by nut tilting is solved, thus achieving reliable sealing and simplified assembly of the ball valve, and adapting to the sealing integrity under complex working conditions.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHEJIANG TUOXIN CASTING CO LTD
- Filing Date
- 2025-09-15
- Publication Date
- 2026-07-17
AI Technical Summary
In existing ball valves, the nut is prone to tilting during the screwing process, which can lead to uneven pressure on the valve seat seal and affect the sealing effect.
The design employs a combination of a clamping seat and an installation ring, which achieves bidirectional axial and circumferential limiting through a limiting groove and an elastic limiting element. This ensures that the installation ring and valve seat are positioned coaxially, and combined with adaptive sealing based on medium pressure, enhances sealing reliability.
Eliminates pressure imbalance caused by thread tilting, ensures uniform force on the valve seat, improves the sealing reliability between the ball core and the valve seat, simplifies the assembly process, reduces the risk of seal movement, and achieves sealing integrity under complex working conditions.
Smart Images
Figure CN224516007U_ABST
Abstract
Claims
1. A pressure self-compensating ball valve casting, comprising a valve body (1), a ball core (2) and a valve seat (3), the valve body (1) is internally provided with a flow channel (4), the ball core (2) and the valve seat (3) are sealingly arranged in the valve body (1) to separate the flow channel (4), characterized in that: It also includes a clamping seat (5) and an mounting ring (6). The clamping seat (5) is screwed into the valve body (1) through an external thread, and the clamping seat (5) has a limiting groove (7) for the mounting ring (6) to be embedded in. The inner side wall of the limiting groove (7) is also provided with several elastic limiting elements (8). The several elastic limiting elements (8) are evenly distributed along the circumference of the limiting groove (7), and each elastic limiting element (8) abuts against the outer circumferential surface of the mounting ring (6). The end of the mounting ring (6) away from the clamping seat (5) has a sealing ring groove (9) for the valve seat (3) to be embedded in. The mounting ring (6) presses the valve seat (3) onto the ball core (2). 2. The pressure self-compensating ball valve casting of claim 1, wherein: The pressing seat (5) is also provided with a number of first pressure holes (10) that communicate with the flow channel (4). The number of first pressure holes (10) corresponds one-to-one with a number of elastic limiting members (8). One corner of each elastic limiting member (8) extends into the corresponding first pressure hole (10).
3. The pressure self-compensating ball valve casting of claim 1, wherein: Each of the elastic limiting members (8) has two separate limiting portions (11) protruding from one end face that abuts against the mounting ring (6).
4. The pressure self-compensating ball valve casting of claim 1, wherein: The mounting ring (6) is provided with a second pressure hole (12) that communicates with the flow channel (4). The second pressure hole (12) is also connected to the sealing ring groove (9). The valve seat (3) is slidably disposed in the sealing ring groove (9) to separate the second pressure hole (12) from the sealing ring groove (9). When the valve seat (3) abuts against the inner bottom wall of the sealing ring groove (9), one corner of the valve seat (3) extends into the second pressure hole (12).
5. The pressure self-compensating ball valve casting of claim 4, wherein: The valve seat (3) has an annular groove (13) recessed on its outer circumferential surface, and a gap is formed between the annular groove (13) and the inner wall of the sealing ring groove (9).
6. The pressure self-compensating ball valve casting of claim 4, wherein: The second pressure hole (12) has a flow-guiding arc surface (14) at one end edge near the flow channel (4).
7. The pressure self-compensating ball valve casting of claim 1, wherein: The end face of the clamping seat (5) away from the mounting ring (6) has a quick-release groove (15).
8. The pressure self-compensating ball valve casting of claim 1, wherein: The valve body (1) is a casting.