A reversing valve

Abstract

The application provides a reversing valve and belongs to the valve field. The reversing valve comprises a valve body and a spherical valve core arranged in the valve body. The upper part of the valve body is respectively provided with a water inlet and an upper water outlet. The lower part of the valve body is provided with a lower water outlet. A valve rod capable of driving the spherical valve core to rotate is arranged on one side of the valve body. The other side of the valve body is provided with a side water outlet. The spherical valve core is provided with a first flow channel capable of connecting the water inlet and the lower water outlet. The spherical valve core is provided with a second flow channel and a third flow channel on the two sides of the first flow channel. When the spherical valve core is positively rotated and the first flow channel is disconnected from the water inlet, the third flow channel can connect the water inlet and the upper water outlet. When the spherical valve core is reversely rotated and the first flow channel is disconnected from the water inlet, the second flow channel can connect the water inlet and the side water outlet, and the third flow channel is connected with the lower water outlet. The first flow channel is provided with the maximum space on the two sides to arrange the second flow channel and the third flow channel, so that the shortest path is arranged, and the water passing efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of valves, and more particularly to a directional control valve. Background Technology

[0002] Directional control valves are mainly used in pipelines to cut off, distribute, and change the flow direction of media, quickly altering the flow path. They are widely used in petroleum, chemical, and urban water supply and drainage applications where strict shut-off is required. The working principle of a directional control valve is to rotate the valve core to open or close the valve. For example, Chinese Patent Application No. 202021495389.9 discloses a four-way ball valve, including a valve body, valve seat, locking connector, elastic element, and spherical valve core. The spherical valve core is installed in the valve cavity of the valve body and has two flow channels that connect adjacent passages. The four valve ports of the valve body are circumferentially distributed around the rotation axis of the spherical valve core. The above scheme makes it very convenient to connect two adjacent valve ports. In actual use, it may be necessary to use one port for water inlet and the other ports for water outlet. In order to avoid the interconnection between the flow channels inside the ball valve core, the above scheme often requires a detour to open the flow channels. The flow channels increase the unnecessary length and reduce the water flow efficiency of the ball valve core. Summary of the Invention

[0003] The purpose of this invention is to address the aforementioned problems in existing technologies by proposing a reversing valve. The technical problem this invention aims to solve is: how to improve the water flow efficiency of a ball valve core.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a reversing valve, comprising a valve body and a spherical valve core disposed within the valve body, wherein the upper part of the valve body has an inlet and an upper outlet, and the lower part of the valve body has a lower outlet; a valve stem capable of rotating the spherical valve core is provided on one side of the valve body; characterized in that the other side of the valve body has a side outlet; a first flow channel is provided on the spherical valve core, connecting the inlet and the lower outlet; a second flow channel and a third flow channel are provided on both sides of the first flow channel; when the spherical valve core rotates forward, disconnecting the first flow channel from the inlet, the third flow channel connects the inlet and the upper outlet; when the spherical valve core rotates in the reverse direction, disconnecting the first flow channel from the inlet, the second flow channel connects the inlet and the side outlet, and the third flow channel connects the lower outlet.

[0005] By creating three flow channels in the spherical valve core, the inlet is connected to the lower outlet, side outlet, and upper outlet, respectively, forming three interchangeable diversion paths. The first flow channel is a direct flow path, representing the shortest length connecting the inlet and the lower outlet, thus improving the flow efficiency of liquid from the lower outlet. Secondly, to minimize the connection paths between the side outlet and the inlet, and between the side outlet and the lower outlet, a second flow channel needs to be created on the side of the spherical valve core. Therefore, the first flow channel is set as the shortest path, maximizing the space on both sides of the first flow channel for the second and third flow channels. The creation of the second and third flow channels is unaffected by the first flow channel, facilitating the creation of the shortest paths and improving the flow efficiency of each channel. In addition to achieving the interchangeability of the three flow channels, a backup path is added: the third flow channel connects to the lower outlet to remove residual liquid within the third flow channel.

[0006] In the aforementioned reversing valve, the valve stem is rotatably connected to the valve body laterally, and one end of the valve stem is fixedly connected to the spherical valve core. The first flow channel is located at the center of the spherical valve core and is perpendicular to the valve stem. The axis of the first flow channel is the axis of the spherical valve core and is perpendicular to the rotation axis of the spherical valve core, so that when the first flow channel is in a state where it connects the upper and lower outlets, it can rotate to other states to cut off the passage between the upper and lower outlets.

[0007] In the aforementioned reversing valve, the second flow channel runs straight through the spherical valve core and is inclined relative to the first flow channel. The outlet port of the second flow channel is located on the axis of the valve stem, and the outlet port of the second flow channel is always connected to the side outlet during the rotation of the spherical valve core. When the spherical valve core rotates in the reverse direction until the third flow channel connects the inlet and the upper outlet, the inlet port of the second flow channel connects to the lower outlet. When the spherical valve core rotates in the forward direction until the third flow channel connects the inlet and the upper outlet, the inlet port of the second flow channel connects to the lower outlet. The second flow channel is a direct flow channel, which shortens the distance from the inlet to the side outlet, further improving the water flow efficiency of the spherical valve core. One port of the second flow channel is connected to the side outlet, so that the port of the second flow channel is always connected to the side outlet during the rotation of the spherical valve core, realizing the function of one flow channel for two purposes. When the second flow channel is connected to the side outlet and the lower outlet, it can be used for pipeline cleaning and adding a bypass pipe, enriching the function of the valve and increasing the possibility of expanding the function of the valve.

[0008] In the aforementioned reversing valve, the valve body includes an upper valve body and a lower valve body fixedly connected to each other. The spherical valve core is disposed in the lower valve body. The upper valve body is in the shape of a three-way pipe. The inlet and the upper outlet are disposed on opposite sides of the upper valve body. The lower end of the upper valve body has an assembly pipe, and the upper end of the lower valve body has a threaded connector. The assembly pipe is threaded onto the outside of the threaded connector. The middle part of the upper valve body has an isolation section that separates the inlet and the upper outlet. The isolation section has a tubular inlet pipe located inside the assembly pipe. The inner cavity of the inlet pipe is connected to the inlet. A water passage is formed between the outer wall of the inlet pipe and the inner wall of the threaded connector, and the water passage is connected to the upper outlet. Since both the upper outlet and the inlet are located above the spherical valve core, and the water passage surrounds the outer circumference of the inlet pipe, the ports connecting the inlet pipe and the water passage to the third flow channel are the closest when connecting to the third flow channel, thus making the path of the third flow channel the shortest and improving the water output efficiency of the upper outlet.

[0009] In the aforementioned reversing valve, the lower valve body is provided with two symmetrically arranged, annular valve seats. The spherical valve core is located between the two valve seats. The two valve seats have arc-shaped surfaces adapted to the spherical valve core. The middle of the two valve seats has a tubular connecting part. There is a water passage gap between the inner sidewall of the valve seat and the outer side of the connecting part of the valve seat. The connecting part of the upper valve seat is connected to the water inlet pipe, and the water passage gap is connected to the water passage channel. The connecting part of the lower valve seat is connected to the lower outlet.

[0010] In the aforementioned reversing valve, the third flow channel includes an inclined flow channel one and an inclined flow channel two, which are connected to form a V-shape. When the spherical valve core rotates forward, causing the first flow channel to disconnect from the inlet, the inlet port of the inclined flow channel one connects to the connecting part of the valve seat located above, and the outlet port of the inclined flow channel two connects to the water passage gap. Since the ports connecting the inlet pipe and the water passage gap to the third flow channel are both vertically upward, the third flow channel must bend when connecting the inlet and the upper outlet. The bend forms a V-shape to minimize the connection path between the inlet and the upper outlet.

[0011] In the aforementioned reversing valve, the lower valve body has a connecting pipe at its bottom. The inner wall of the connecting pipe has internal threads, and the lower end of the connecting pipe has an installation port. A threaded sleeve located below the valve seat is screwed into the connecting pipe, and the threaded sleeve abuts against the valve seat located below. The spherical valve core is clamped by the valve seat and restricted within the valve body by the threaded sleeve. The threaded sleeve can adjust the clamping degree of the valve seat on the spherical valve core, ensuring a tight connection to prevent leakage while the spherical valve core can rotate. Simultaneously, the spherical valve core inevitably experiences some wear during rotation, and the threaded sleeve can be adjusted at any time according to the condition of the spherical valve core, making it highly practical.

[0012] In one of the aforementioned reversing valves, a water pipe is fixedly connected inside the connecting pipe, and the water pipe is connected to the lower outlet.

[0013] Compared with the prior art, the advantages of the present invention are:

[0014] To minimize the connection path between the side outlet and the inlet, and between the side outlet and the bottom outlet, a second flow channel needs to be opened on the side of the spherical valve core. Therefore, the first flow channel passes through the center of the spherical valve core, so that there is maximum space on both sides of the first flow channel to set up the second and third flow channels. The opening of the second and third flow channels is not affected by the first flow channel, which facilitates the opening of the shortest path and improves the water flow efficiency of each flow channel.

[0015] When the second flow channel connects the side outlet and the bottom outlet, it can be used for pipeline cleaning and adding a bypass pipe. The third flow channel, which is connected to the bottom outlet, can be used to remove residual liquid, thus enriching the valve's functions and increasing the possibility of expanding its functionality. Attached Figure Description

[0016] Figure 1 This is an overall schematic diagram of the present invention;

[0017] Figure 2 This is a cross-sectional view of the present invention with the inlet connected to the outlet.

[0018] Figure 3 This is a cross-sectional view of the present invention with the inlet connected to the outlet.

[0019] Figure 4 This is a cross-sectional view of the water outlet on the inlet side of the present invention.

[0020] In the diagram, 1. Valve body; 11. Upper valve body; 111. Isolation section; 112. Inlet pipe; 113. Inlet; 114. Upper outlet; 115. Assembly pipe; 116. Water passage; 12. Lower valve body; 121. Side outlet; 122. Lower outlet; 123. Connecting pipe; 1231. Mounting port; 124. Threaded pipe; 2. Ball valve core; 21. First flow channel; 22. Second flow channel; 23. Third flow channel; 231. Inclined flow channel one; 232. Inclined flow channel two; 3. Valve stem; 4. Valve seat; 41. Connecting part; 42. Arc-shaped surface; 43. Water passage gap; 5. Threaded sleeve; 6. Valve cover; 7. Water pipe; 8. Handle. Detailed Implementation

[0021] 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 the following embodiments.

[0022] As shown in 1-4, the valve includes a valve body 1 and a spherical valve core 2 disposed within the valve body 1. The upper part of the valve body 1 has an inlet 113 and an upper outlet 114, and the lower part of the valve body 1 has a lower outlet 122. A valve stem 3 capable of rotating the spherical valve core 2 is provided on one side of the valve body 1, and a side outlet 121 is provided on the other side of the valve body 1. A first flow channel 21 is formed on the spherical valve core 2, which connects the inlet 113 and the lower outlet 122. The first flow channel 21 has a second flow channel 22 and a third flow channel 23 on both sides. When the ball valve core 2 rotates in the forward direction, causing the first flow channel 21 to disconnect from the inlet 113, the third flow channel 23 can connect the inlet 113 and the upper outlet 114. When the ball valve core 2 rotates in the reverse direction, causing the first flow channel 21 to disconnect from the inlet 113, the second flow channel 22 can connect the inlet 113 and the side outlet 121, and the third flow channel 23 is connected to the lower outlet 122. The first flow channel 21 is a direct flow channel, which is the shortest length connecting the inlet 113 and the lower outlet 122, thus improving the efficiency of liquid flow from the lower outlet 122. Secondly, in order to minimize the connection path between the side outlet 121 and the inlet 113, and to minimize the connection path between the side outlet 121 and the lower outlet 122, a second flow channel 22 needs to be opened on the side of the spherical valve core 2. The valve stem 3 is rotatably connected to the valve body 1, and one end of the valve stem 3 is fixedly connected to the spherical valve core 2. The other end of the valve stem 3 is fixedly connected to the handle 8. The first flow channel 21 is set at the center of the spherical valve core 2 and is perpendicular to the valve stem 3. Therefore, the first flow channel 21 passes through the center of the spherical valve core 2, so that there is maximum space on both sides of the first flow channel 21 to set up the second flow channel 22 and the third flow channel 23. The second flow channel 22 and the third flow channel 23 are not affected by the first flow channel 21 when they are opened, which facilitates the opening of the shortest path and improves the water flow efficiency of each flow channel. The above realizes the mutual conversion of the three flow channels and also adds a backup passage. When the second flow channel 22 is connected to the side outlet 121 and the lower outlet 122, it can be used for pipeline cleaning and adding a bypass pipe. When the spherical valve core 2 rotates forward to the second flow channel 22 connecting the inlet 113 and the side outlet 121, the inlet port of the third flow channel 23 is connected to the lower outlet 122 for the purpose of removing residual liquid, etc., which enriches the function of the valve and improves the possibility of functional expansion of the valve. The side outlet 121 is screwed with a valve cover 6 to prevent dust from entering the valve body 1. According to daily operating habits, the setting angle of the valve stem 3 can be set to 90 degrees, that is, the valve passage is switched once every time it is rotated 90 degrees.

[0023] The second flow channel 22 runs straight through the spherical valve core 2 and is inclined relative to the first flow channel 21. The outlet port of the second flow channel 22 is located on the axis of the valve stem 3, and the outlet port of the second flow channel 22 is always connected to the side outlet 121 during the rotation of the spherical valve core 2. When the spherical valve core 2 rotates forward to the point where the third flow channel 23 connects the inlet 113 and the upper outlet 114, the inlet port of the second flow channel 22 is connected to the lower outlet 122. The second flow channel 22 is a direct flow channel, which shortens the distance from the inlet 113 to the side outlet 121 and further improves the water flow efficiency of the spherical valve core 2. The fact that one port of the second flow channel 22 is connected to the side outlet 121 ensures that this port is always connected to the side outlet 121 during the rotation of the spherical valve core 2, realizing the function of one flow channel for two purposes.

[0024] The valve body 1 includes an upper valve body 11 and a lower valve body 12 that are fixedly connected. A spherical valve core 2 is disposed inside the lower valve body 12. The upper valve body 11 is in the shape of a three-way pipe. The inlet 113 and the upper outlet 114 are disposed on both sides of the upper valve body 11. The lower end of the upper valve body 11 has an assembly pipe 115. The upper end of the lower valve body 12 has a threaded pipe 124. The assembly pipe 115 is threaded onto the outside of the threaded pipe 124. The middle part of the upper valve body 11 has an isolation part 111 that separates the inlet 113 and the upper outlet 114. The isolation part 111 has a tubular inlet pipe 112. The inlet pipe 112 is located inside the assembly pipe 115. The inner cavity of the inlet pipe 112 is connected to the inlet 113. A water passage 116 is formed between the outer wall of the inlet pipe 112 and the inner wall of the threaded pipe 124. The water passage 116 is connected to the upper outlet 114. Since both the upper outlet 114 and the inlet 113 are located above the ball valve core 2, when connecting the third flow channel 23, the ports connecting the inlet pipe 112 and the water passage 116 to the third flow channel 23 are the closest, thus making the path of the third flow channel 23 the shortest and improving the water discharge efficiency of the upper outlet 114.

[0025] The lower valve body 12 has two symmetrically arranged annular valve seats 4. A spherical valve core 2 is located between the two valve seats 4. The two valve seats 4 have arc-shaped surfaces 42 that are adapted to the spherical valve core 2. The middle of the two valve seats 4 has a tubular connecting part 41. There is a water passage gap 43 between the inner side wall of the valve seat 4 and the outer side of the connecting part 41. The connecting part 41 of the upper valve seat 4 is connected to the water inlet pipe 112. The water passage gap 43 is connected to the water passage channel 116. The connecting part 41 of the lower valve seat 4 is connected to the lower outlet 122. The bottom of the lower valve body 12 has a connecting pipe 123. The inner wall of the connecting pipe 123 has internal threads. The lower end of the connecting pipe 123 has an installation port 1231. A threaded sleeve 5 located below the valve seat 4 is screwed into the connecting pipe 123, and the threaded sleeve 5 abuts against the lower valve seat 4. The lower valve body 12 has a connecting pipe 123 at its bottom. The inner wall of the connecting pipe 123 has internal threads, and the lower end of the connecting pipe 123 has an installation port 1231. A threaded sleeve 5 located below the valve seat 4 is screwed into the connecting pipe 123, and the threaded sleeve 5 abuts against the valve seat 4 located below. A water pipe 7 is fixedly connected inside the connecting pipe 123. The upper end of the water pipe 7 forms a lower outlet 122 and communicates with the connecting part 41 of the valve seat 4 located below. The spherical valve core 2 is clamped by the valve seat 4 and restricted to the valve body 1 by the threaded sleeve 5. The threaded sleeve 5 can adjust the clamping degree of the valve seat 4 on the spherical valve core 2, ensuring a tight connection to prevent water leakage while the spherical valve core 2 can rotate. At the same time, the spherical valve core 2 will inevitably experience some wear during rotation. The setting of the threaded sleeve 5 can be adjusted at any time according to the state of the spherical valve core 2, which is highly practical. The hollow water column abuts against the water pipe 7, which improves the tight connection between the components and prevents water leakage.

[0026] The aforementioned third flow channel 23 includes an inclined flow channel one 231 and an inclined flow channel two 232. The inclined flow channel one 231 and the inclined flow channel two 232 are connected to form a V-shape. When the ball valve core 2 rotates in the forward direction, causing the first flow channel 21 to disconnect from the inlet 113, the inlet port of the inclined flow channel one 231 is connected to the connecting part 41 of the valve seat 4 located above. The outlet port of the inclined flow channel two 232 is connected to the water passage gap 43. A water pipe 7 is fixedly connected inside the connecting pipe 123. The water pipe 7 is connected to the lower outlet 122. Since the ports of the inlet pipe 112 and the water passage gap 43 that are connected to the third flow channel 23 are both vertically upward, the third flow channel 23 must bend when connecting the inlet 113 and the upper outlet 114. The bend is V-shaped, which makes the connection path between the inlet 113 and the upper outlet 114 the shortest.

[0027] When the ball valve core 2 is rotated, not only can the second flow channel 22 be connected to the inlet 113 and the lower outlet 122 respectively, but the third flow channel 23 can also be connected to the inlet 113 and the lower outlet 122 respectively. Due to the bending design of the third flow channel 23, when the second flow channel 22 is connected to the inlet 113 and the upper outlet 114, the bend of the third flow channel 23 will store the residual liquid that has not been discharged from the valve body 1 after entering from the inlet 113. When the second flow channel 22 is connected to the inlet 113 and the side outlet 121, the third flow channel 23 becomes an inverted V shape downward and is connected to the lower outlet 122, so as to discharge the residual liquid in the third flow channel 23 and avoid the formation of water stains in the third flow channel 23.

[0028] When the handle 8 is turned, the valve stem 3 rotates to... Figure 2 In the state, the first flow channel 21 is in a vertical state. At this time, the inlet 113 is connected to the lower outlet 122, and other passages are cut off. The liquid flows vertically from the inlet 113 through the inlet pipe 112 out of the ball valve core 2 and then through the water pipe 7 to the outside of the valve body 1.

[0029] valve in Figure 2 When handle 8 is turned 90 degrees in the positive direction under the current condition, the valve's flow status is as follows: Figure 3 The third flow channel 23 connects the inlet 113 to the upper outlet 114, and the passage of the lower outlet 122 is cut off. The second flow channel 22 connects the lower outlet 122 to the side outlet 121 as a backup pipeline that can be used for pipeline cleaning or external pipeline.

[0030] valve in Figure 2 When handle 8 is turned 90 degrees in the opposite direction while in the current state, the valve's flow status is as follows: Figure 4 The second flow channel 22 connects the inlet 113 to the side outlet 121, and the passages of the lower outlet 122 and the upper outlet 114 are cut off. The third flow channel 23 is connected to the lower outlet 122 and is used for the discharge of residual liquid.

[0031] This invention connects the inlet 113 to the lower outlet 122, the side outlet 121, and the upper outlet 114 respectively through a first flow channel 21, a second flow channel 22, and a third flow channel 23 formed in the spherical valve core 2, creating three interchangeable diversion paths. The first flow channel 21 is a direct flow channel, representing the shortest length connecting the inlet 113 and the lower outlet 122, thus improving the efficiency of liquid flow from the lower outlet 122. Furthermore, to minimize the connection paths between the side outlet 121 and the inlet 113, and between the side outlet 121 and the lower outlet 122, a second flow channel 22 needs to be formed on the side of the spherical valve core 2. Therefore, the first flow channel 21... The first flow channel 21 passes through the center of the spherical valve core 2, allowing for maximum space on both sides of the first flow channel 21 to accommodate the second flow channel 22 and the third flow channel 23. The second and third flow channels 22 and 23 are not affected by the first flow channel 21 when they are opened, facilitating the creation of the shortest path and improving the water flow efficiency of each flow channel. In addition to enabling the mutual conversion of the three flow channels, a backup passage is also added. When the second flow channel 22 is connected to the side outlet 121 and the lower outlet 122, it can be used for pipeline cleaning and adding a bypass pipe. The third flow channel 23 is connected to the lower outlet 122 and can be used for removing residual liquid, etc., enriching the function of the valve and increasing the possibility of functional expansion of the valve.

[0032] The specific embodiments described herein are merely illustrative of the spirit of the invention. Those skilled in the art to which this invention 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 the invention or exceeding the scope defined by the appended claims.

Claims

1. A reversing valve, comprising a valve body (1) and a spherical valve core (2) disposed within the valve body (1), wherein the upper part of the valve body (1) has an inlet (113) and an upper outlet (114), and the lower part of the valve body (1) has a lower outlet (122), and a valve stem (3) capable of rotating the spherical valve core (2) is provided on one side of the valve body (1), characterized in that, The valve body (1) has a side outlet (121) on the other side. The spherical valve core (2) has a first flow channel (21) that connects the inlet (113) and the lower outlet (122). The spherical valve core (2) has a second flow channel (22) and a third flow channel (23) on both sides of the first flow channel (21). When the spherical valve core (2) rotates in the forward direction, causing the first flow channel (21) to disconnect from the inlet (113), the third flow channel (23) can... The valve body (1) is connected to the inlet (113) and the upper outlet (114). When the spherical valve core (2) rotates in the opposite direction, causing the first flow channel (21) to disconnect from the inlet (113), the second flow channel (22) can connect the inlet (113) and the side outlet (121), and the third flow channel (23) is connected to the lower outlet (122). The valve body (1) includes an upper valve body (11) and a lower valve body (12) that are fixedly connected. The spherical valve core (2) is disposed on the lower valve body (12). Inside, the upper valve body (11) is in the shape of a three-way pipe. The inlet (113) and the upper outlet (114) are located on both sides of the upper valve body (11). The lower end of the upper valve body (11) has an assembly pipe (115), and the upper end of the lower valve body (12) has a threaded connector (124). The assembly pipe (115) is screwed onto the outside of the threaded connector (124). The middle part of the upper valve body (11) has a connection between the inlet (113) and the upper outlet (114). The isolation section (111) is separated by a tubular water inlet pipe (112), which is located inside the assembly pipe (115). The inner cavity of the water inlet pipe (112) is connected to the water inlet (113). A water passage (116) is formed between the outer wall of the water inlet pipe (112) and the inner wall of the screw pipe (124). The water passage (116) is connected to the upper water outlet (114).

2. A reversing valve according to claim 1, characterized in that, The valve stem (3) is rotatably connected to the valve body (1) in a transverse direction and one end of the valve stem (3) is fixedly connected to the spherical valve core (2). The first flow channel (21) is located at the center of the spherical valve core (2) and is perpendicular to the valve stem (3).

3. A reversing valve according to claim 2, characterized in that, The second flow channel (22) runs straight through the spherical valve core (2) and is inclined relative to the first flow channel (21). The outlet port of the second flow channel (22) is located on the axis of the valve stem (3), and the outlet port of the second flow channel (22) is always connected to the side outlet (121) during the rotation of the spherical valve core (2).

4. A reversing valve according to claim 1, 2, or 3, characterized in that, When the ball valve core (2) rotates in the forward direction to connect the inlet (113) and the upper outlet (114) of the third flow channel (23), the inlet port of the second flow channel (22) is connected to the lower outlet (122).

5. A reversing valve according to claim 1, characterized in that, The lower valve body (12) is provided with two valve seats (4) arranged symmetrically and in an annular shape. The spherical valve core (2) is located between the two valve seats (4). The two valve seats (4) have arc-shaped surfaces (42) that are adapted to the spherical valve core (2). The middle part of the two valve seats (4) has a tubular connecting part (41). There is a water passage gap (43) between the inner side wall of the valve seat (4) and the outer side of the connecting part (41) of the valve seat (4). The connecting part (41) of the upper valve seat (4) is connected to the water inlet pipe (112). The water passage gap (43) is connected to the water passage channel (116). The connecting part (41) of the lower valve seat (4) is connected to the lower outlet (122).

6. A reversing valve according to claim 5, characterized in that, The third flow channel (23) includes an inclined flow channel one (231) and an inclined flow channel two (232). The inclined flow channel one (231) and the inclined flow channel two (232) are connected to form a V-shape. When the ball valve core (2) rotates in the forward direction, causing the first flow channel (21) to disconnect from the inlet (113), the inlet port of the inclined flow channel one (231) is connected to the connecting part (41) of the valve seat (4) located above, and the outlet port of the inclined flow channel two (232) is connected to the water passage gap (43).

7. A reversing valve according to claim 5, characterized in that, The lower valve body (12) has a connecting pipe (123) at the bottom. The inner wall of the connecting pipe (123) has an internal thread. The lower end of the connecting pipe (123) has an installation port (1231). A screw sleeve (5) located below the valve seat (4) is screwed into the connecting pipe (123), and the screw sleeve (5) abuts against the valve seat (4) located below.

8. A reversing valve according to claim 7, characterized in that, A water pipe (7) is fixedly connected inside the connecting pipe (123), and the water pipe (7) is connected to the lower water outlet (122).

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