A four-way ball valve

Abstract

This utility model provides a four-way ball valve, belonging to the field of valve technology. It solves the problem that existing four-way ball valves inevitably have an open passage and the flow channel cannot be completely closed. This four-way ball valve includes a ball valve body, a valve ball, and a valve stem. The ball valve body has four evenly distributed drainage pipes on its side wall. The ball valve body has an installation cavity that connects to the drainage pipes. The valve ball is located in the installation cavity and has an L-shaped connecting hole. The valve ball has a valve core cavity. The end of the valve stem is placed in the valve core cavity and has an L-shaped through hole. The two ends of the L-shaped through hole are aligned with the connecting hole. The top and bottom of the ball valve body are covered with caps. This utility model has the advantages of simple operation and closed flow channel.

Description

Technical Field

[0001] This utility model belongs to the field of valve technology, and relates to a ball valve, and more particularly to a four-way ball valve. Background Technology

[0002] A ball valve is a type of valve that controls the flow of fluid by rotating a ball with a channel. It is characterized by its simple structure and convenient operation. A four-way ball valve is a multi-channel fluid control valve. Its internal ball has an L-shaped or T-shaped flow channel. By rotating 90° or 180°, four different fluid path combinations can be achieved, which can complete functions such as media diversion, merging, or flow direction switching.

[0003] Due to structural limitations, conventional 4-way ball valves inevitably have an open water flow path and cannot close the path like conventional ball valves. This limits their application to fixed, long-term flow situations and usually requires the use of other valves to control the flow of liquid. In emergencies, they cannot close themselves. Therefore, it is necessary to develop a closable 4-way ball valve to control the flow of liquid and increase its applicability. Utility Model Content

[0004] The purpose of this invention is to address the aforementioned problems in the prior art by providing a four-way ball valve capable of closing the passage.

[0005] The objective of this utility model can be achieved through the following technical solution: A four-way ball valve, characterized in that it includes a ball valve body, a valve ball, and a valve stem. The ball valve body has four evenly distributed drainage pipes on its side wall. The ball valve body has an installation cavity that connects to the drainage pipes. The valve ball is located in the installation cavity and has an L-shaped connecting hole. The valve ball has a valve core cavity. The end of the valve stem is placed in the valve core cavity. The valve stem has an L-shaped through hole. The two ends of the L-shaped through hole are aligned with the connecting hole. The top and bottom of the ball valve body are both covered with caps.

[0006] In the aforementioned four-way ball valve, a positioning block is provided on the side wall of the valve stem, and two centrally symmetrical fan-shaped grooves are provided at the top of the valve ball, with positioning grooves at both ends of the fan-shaped grooves.

[0007] In the aforementioned four-way ball valve, the bottom of the valve ball is provided with a circular groove, and a spring is provided in the circular groove. The two ends of the spring are respectively fixed to the cover and the valve stem.

[0008] In the aforementioned four-way ball valve, the top of the valve ball is provided with a spring cage, and the side wall of the spring cage is provided with several supporting leaf springs, and both ends of the supporting leaf springs are provided with support rings.

[0009] In the aforementioned four-way ball valve, a valve seat is provided on the side wall of the valve ball.

[0010] Compared with existing technologies, this four-way ball valve separates the valve stem and the valve ball, and cuts off the water flow path by rotating the valve stem to achieve the flow channel cutoff of the four-way ball valve. The spring cage makes the movement of the valve ball more stable and reduces leakage caused by misalignment. The positioning block and positioning groove can control the rotation of the valve ball and provide positioning prompts for the opening and closing of the valve stem. Together with the spring at the bottom, the valve stem installation and torsion are more stable. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this four-way ball valve.

[0012] Figure 2 This is a schematic diagram of the partial cross-section of this four-way ball valve.

[0013] Figure 3 This is a schematic diagram of the stem of a four-way ball valve.

[0014] Figure 4 This is a schematic diagram of the ball structure of this four-way ball valve.

[0015] In the diagram, 1. Drainage pipe; 2. Ball valve body; 3. Cover; 4. Mounting cavity; 5. Valve seat; 6. Connecting hole; 7. Spring; 8. Circular groove; 9. Valve ball; 10. Spring cage; 11. Valve stem; 12. Positioning block; 13. L-shaped through hole; 14. Support leaf spring; 15. Support ring; 16. Valve core cavity; 17. Positioning groove; 18. Sector ring groove. Detailed Implementation

[0016] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0017] like Figure 1 , 2 As shown in Figures 3 and 4, this four-way ball valve includes a ball valve body 2, a ball valve 9, and a stem valve 11. The ball valve body 2 has four evenly distributed drainage pipes 1 on its side wall. The ball valve body 2 has an installation cavity 4 connecting to the drainage pipes 1. The ball valve 9 is located within the installation cavity 4, and an L-shaped connecting hole 6 is opened on the ball valve 9. A valve core cavity 16 is located inside the ball valve 9. The end of the stem valve 11 is placed within the valve core cavity 16, and an L-shaped through hole 13 is opened on the stem valve 11. Both ends of the L-shaped through hole 13 are aligned with the connecting hole 6. A cap 3 is provided at the top and bottom of the ball valve body 2. In use, water flows in along the drainage pipes 1 and sequentially through the connecting hole 6, the L-shaped through hole 13, and finally out along the drainage pipes 1. When switching water paths, the stem valve 11 is rotated and the ball valve 9 is moved, allowing the L-shaped through hole 13 to align with different connecting holes 6.

[0018] Preferably, a positioning block 12 is provided on the side wall of the valve stem 11, and two centrally symmetrical fan-shaped grooves 18 are provided on the top of the valve ball 9. Positioning grooves 17 are provided at both ends of the fan-shaped grooves 18. The fan-shaped grooves 18 can limit the valve stem 11 to rotate 90 degrees on its own, and can close the L-through hole 13 to cut off the flow channel.

[0019] Preferably, the bottom of the valve ball 9 is provided with a circular groove 8, and a spring 7 is provided in the circular groove 8. The two ends of the spring 7 are fixed to the cover 3 and the valve stem 11 respectively. The spring 7 pulls the valve stem 11 so that the valve stem 11 is always pulled downward, so that the valve stem 11 can be reset when adjusting the opening flow channel, and at the same time prevent the valve stem 11 from falling off.

[0020] Preferably, the valve ball 9 is provided with a spring cage 10 at the top, and a number of supporting leaf springs 14 are provided on the side wall of the spring cage 10. Each of the supporting leaf springs 14 is provided with a support ring 15 at both ends. The spring cage 10 supports the valve ball 9 from below, so that the valve ball 9 always faces downward, reducing the displacement of the valve ball 9 and causing water leakage.

[0021] Preferably, a valve seat 5 is provided on the side wall of the valve ball 9.

[0022] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

[0023] Although this document frequently uses terms such as drainage tube 1, ball valve body 2, cover 3, mounting cavity 4, valve seat 5, connecting hole 6, spring 7, circular groove 8, valve ball 9, spring cage 10, valve stem 11, positioning block 12, L-shaped through hole 13, support leaf spring 14, support ring 15, valve core cavity 16, positioning groove 17, and fan ring groove 18, the possibility of using other terms is not excluded. The use of these terms is merely for the convenience of describing and explaining the essence of this utility model; interpreting them as any additional limitation would contradict the spirit of this utility model.

Claims

1. A four-way ball valve, characterized by, The valve includes a ball valve body (2), a valve ball (9), and a valve stem (11). The ball valve body (2) has four evenly distributed drainage pipes (1) on its side wall. The ball valve body (2) has an installation cavity (4) connecting the drainage pipes (1). The valve ball (9) is located within the installation cavity (4), and an L-shaped connecting hole (6) is provided on the valve ball (9). A valve core cavity (16) is provided inside the valve ball (9). The end of the valve stem (11) is placed within the valve core cavity (16), and an L-shaped through hole (13) is provided on the valve stem (11). Both ends are aligned with the connecting hole (6). The top and bottom of the ball valve body (2) are provided with a cap (3). The valve stem (11) is provided with a positioning block (12) on its side wall. Two centrally symmetrical fan ring grooves (18) are provided on the top of the valve ball (9). Both ends of the fan ring groove (18) are provided with positioning grooves (17). In the above-mentioned four-way ball valve, the top of the valve ball (9) is provided with a spring cage (10). The side wall of the spring cage (10) is provided with several supporting leaf springs (14), and both ends of the supporting leaf springs (14) are provided with support rings (15).

2. A four-way ball valve according to claim 1, characterized in that, The valve ball (9) has a circular groove (8) at its bottom, and a spring (7) is provided in the circular groove (8). The two ends of the spring (7) are fixed to the cover (3) and the valve stem (11) respectively.

3. A four-way ball valve according to claim 1, characterized in that The valve ball (9) is provided with a valve seat (5) on its side wall.

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