Three-way valve

Abstract

The utility model discloses a three-way valve which comprises a valve body and a valve cover installed at the bottom of the valve body, the valve body is provided with three flow channels, the three flow channels are respectively communicated with the interior of the valve body through corresponding flow channel openings, a valve element is arranged in the valve body, the valve element is of a cylindrical structure with a cavity, and the valve cover is arranged on the valve body. The valve element is provided with three holes matched with flow channel openings of the valve body, the corresponding face of one hole is a closed face, and the outer wall of the closed face and the outer edges of the three holes are each provided with a groove used for installing a sealing ring. A protruding part used for rotating the valve element is arranged at the top end of the valve element, the protruding part penetrates through a port of the valve body, and in order to prevent the sealing ring from displacing when the valve element rotates, blocking strips are arranged on flow channel openings of the valve body. The sealing device is simple in structure, reasonable in design, reliable in sealing, free of abrasion and long in service life.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, and in particular to a three-way valve. Background Technology

[0002] A valve is an opening and closing device used in pipelines to control the flow and shut-off of fluids within the pipeline. Ball valves are widely used due to their strong flow capacity and rapid opening and closing. However, to ensure the sealing performance of a ball valve, the valve seat and ball need to have a sealing fit; that is, while machining the ball, the valve seat also needs to have a spherical surface that mates with the ball. However, the spherical structure is difficult to machine in actual production, and machining the spherical surface on the valve seat to mate with the ball further increases the difficulty. In addition, after prolonged use, wear occurs between the ball and valve seat due to the frequent rotation of the ball, resulting in a decrease in the sealing effect of the ball valve, leading to leakage and requiring the replacement of the entire ball valve, thus wasting resources. Summary of the Invention

[0003] This utility model provides a three-way valve that features reliable sealing, no wear, and a long service life. The specific technical solution is as follows:

[0004] A three-way valve includes a valve body and a valve cover installed at the bottom of the valve body. The valve body has three flow channels, each of which communicates with the interior of the valve body through a corresponding flow channel opening. The valve body contains a valve core, which is a cylindrical structure with a cavity. The valve core has three holes that match the flow channel openings of the valve body. One of the holes has a closed surface. Grooves for installing sealing rings are provided on the outer wall of the closed surface and on the outer edges of the three holes. A protrusion for rotating the valve core is provided at the top of the valve core, and this protrusion penetrates the port of the valve body. To prevent displacement of the sealing rings when the valve core rotates, baffles are provided on the flow channel openings of the valve body.

[0005] Furthermore, the baffle is an arc-shaped structure. When the sealing ring rotates with the valve core to the flow port of the valve body, the baffle can press the sealing ring tightly, thereby preventing the sealing ring from shifting.

[0006] Furthermore, each flow channel opening is provided with two baffles, which are spaced apart at the middle of the flow channel opening.

[0007] Furthermore, the bottom of the valve core is open, and the bottom of the valve core is placed on the protrusion of the valve cover, which makes the valve core more stable when rotating.

[0008] Furthermore, an end cap is provided on the top of the valve body. This end cap is installed on the protrusion of the valve core to fix the valve core and prevent the valve core from rotating on its own under the impact of strong water flow.

[0009] Furthermore, the outer wall of the convex part of the valve core is provided with three layers of flanges to form a mounting groove for installing the sealing ring, so that the convex part of the valve core is sealed to the port of the valve body.

[0010] Furthermore, an inner stepped surface is provided at the port of the valve body, and the boss of the valve core abuts against the inner stepped surface of the valve body.

[0011] Furthermore, the bottom of the valve body is provided with an internal thread, and the top of the valve cover is provided with an external thread that mates with the internal thread of the valve body, and the valve cover and the valve body are threadedly connected.

[0012] Furthermore, to facilitate the screwing on of the valve cover, a cross bar is provided in the groove at the bottom of the valve cover.

[0013] Furthermore, the outer surfaces of the three flow channels are all provided with anti-slip textures, ensuring a firm connection when the flow channels are connected to the hose and preventing them from easily falling off.

[0014] This utility model has a simple structure and reasonable design. By setting grooves for installing sealing rings on the outer edge of the three holes of the valve core and on the outer wall of the valve core's closed surface, it is ensured that there is no wear between the valve core and the valve body during the rotation of the valve core. At the same time, a baffle is also set on the flow channel opening of the valve body, so that when the sealing ring rotates with the valve core to the flow channel opening of the valve body, the baffle can press the sealing ring tightly and prevent the sealing ring from shifting. This utility model has good sealing performance and long service life. Attached Figure Description

[0015] Figure 1 This is a perspective view of the present invention;

[0016] Figure 2 This is the front view of this utility model;

[0017] Figure 3 yes Figure 2 A cross-sectional view of surface AA;

[0018] Figure 4 This is an exploded view of the present invention;

[0019] Figure 5 This is a three-dimensional representation of the valve core of this utility model. Figure 1 ;

[0020] Figure 6 This is a three-dimensional representation of the valve core of this utility model. Figure 2 ;

[0021] Figure 7 This is a schematic diagram of the valve body of this utility model;

[0022] Figure 8 This is a schematic diagram of the valve cover of this utility model. Detailed Implementation

[0023] To better understand the purpose, function, and specific design of this utility model, the three-way valve of this utility model will be described in further detail below with reference to the accompanying drawings.

[0024] like Figures 1-7 As shown, the three-way valve of this utility model includes a valve body 1 and a valve cover 3 installed at the bottom of the valve body 1. The valve body 1 has three flow channels 11, each communicating with the interior of the valve body 1 through a corresponding flow port 12. Inside the valve body 1 is a valve core 2, which is a cylindrical structure with a cavity. The valve core 2 has three holes 21 that match the flow ports 12 of the valve body 1. One of the holes has a closed surface. Grooves 25 for installing sealing rings 5 ​​are provided on the outer wall of the closed surface and on the outer edges of the three holes 21. A protrusion 23 for rotating the valve core 2 is provided at the top of the valve core 2. The protrusion 23 penetrates the port 15 of the valve body 1. To prevent displacement of the sealing rings 5 ​​when the valve core 2 rotates, baffles 121 are provided on the flow ports 12 of the valve body 1.

[0025] Specifically, such as Figure 2 and Figure 7 As shown, the baffle 121 has an arc-shaped structure. When the sealing ring 5 rotates with the valve core 2 to the flow channel opening 12 of the valve body 1, the baffle 121 can press the sealing ring 5 tightly, thereby preventing the sealing ring 5 from shifting. Two baffles 121 are provided at each flow channel opening, and the two baffles 121 are spaced apart in the middle of the flow channel opening 12.

[0026] like Figures 4-6 As shown, the bottom of the valve core 2 is open, and the bottom of the valve core 2 rests on the protrusion 32 of the valve cover 3, making the valve core 2 more stable when rotating. The top of the valve body 1 is provided with an end cap 4, which is installed on the protrusion 23 of the valve core 2 to fix the valve core 2, and can effectively prevent the valve core 2 from rotating on its own even under the impact of strong water flow.

[0027] The outer wall of the protrusion 23 of the valve core 2 is provided with three layers of flanges 24 to form a mounting groove 231 for installing a sealing ring, so that the protrusion 23 of the valve core is sealed to the port 15 of the valve body 1.

[0028] like Figure 3 , Figure 4 , Figure 7 and Figure 8 As shown, an inner stepped surface 14 is provided at the port 15 of the valve body 1, and the boss 22 of the valve core 2 abuts against the inner stepped surface 14 of the valve body 1.

[0029] The bottom of the valve body 1 is provided with an internal thread 13, and the top of the valve cover 3 is provided with an external thread 31 that mates with the internal thread 13 of the valve body 1. The valve cover 3 is threadedly connected to the valve body 1. To facilitate the screwing on and off of the valve cover 3, a cross bar 33 is provided in the bottom groove of the valve cover 3.

[0030] The outer surfaces of the three flow channels 11 are all provided with anti-slip textures 111, so that the flow channels 11 are firmly connected to the hose and are not easy to fall off.

[0031] In use, one of the three flow channels is designated as the inlet, and the other two as the outlets. Rotating the valve core 2 aligns the three holes 21 on the valve core 2 with the three flow channels 11, creating two outlets. When only one outlet is needed, rotating the valve core 2 aligns the sealing surface of the valve core 2 with one of the flow channels 11, thus blocking that channel, creating one outlet. Before rotating the valve core 2, the end cap 4 on the top of the valve body 1 needs to be removed.

[0032] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A three-way valve, comprising a valve body and a valve cover mounted at the bottom of the valve body, wherein the valve body has three flow channels, and the three flow channels are respectively connected to the interior of the valve body through corresponding flow channel openings, characterized in that, The valve body contains a valve core, which is a cylindrical structure with a cavity. The valve core has three holes that match the flow passage of the valve body. One of the holes has a closed surface. Grooves for installing sealing rings are provided on the outer wall of the closed surface and on the outer edge of the three holes. The top of the valve core has a protrusion for rotating the valve core. The protrusion passes through the port of the valve body. To prevent the sealing ring from shifting when the valve core rotates, a baffle is provided on the flow passage of the valve body.

2. The three-way valve according to claim 1, characterized in that, The baffle is an arc-shaped structure. When the sealing ring rotates with the valve core to the flow port of the valve body, the baffle can press the sealing ring tightly, thereby preventing the sealing ring from shifting.

3. The three-way valve according to claim 2, characterized in that, Two baffles are provided at each flow channel opening, and the two baffles are spaced apart at the middle of the flow channel opening.

4. The three-way valve according to claim 1, characterized in that, The bottom of the valve core is open, and the bottom of the valve core is placed on the protrusion of the valve cover, which makes the valve core more stable when rotating.

5. The three-way valve according to claim 4, characterized in that, The valve body is provided with an end cap on the top, which is installed on the protrusion of the valve core to fix the valve core and prevent the valve core from rotating on its own under the impact of strong water flow.

6. The three-way valve according to claim 5, characterized in that, The outer wall of the convex part of the valve core is provided with three layers of flanges to form a mounting groove for installing the sealing ring, so that the convex part of the valve core is sealed to the port of the valve body.

7. The three-way valve according to claim 6, characterized in that, An inner stepped surface is provided at the port of the valve body, and the boss of the valve core abuts against the inner stepped surface of the valve body.

8. The three-way valve according to claim 7, characterized in that, The valve body has an internal thread at the bottom, and the valve cover has an external thread at the top that matches the internal thread of the valve body. The valve cover and the valve body are connected by threads.

9. The three-way valve according to claim 8, characterized in that, To facilitate the screwing on of the valve cover, a cross bar is provided in the groove at the bottom of the valve cover.

10. The three-way valve according to claim 1, characterized in that, The outer surfaces of the three flow channels are all provided with anti-slip textures, which ensures a firm connection when the flow channels are connected to the hose and prevents them from falling off easily.

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