A ball valve with switchable flow path

Abstract

The present invention relates to the technical field of ball valves, and specifically to a ball valve with switchable flow channels, comprising a valve body, a valve cover, and a valve core rotatably arranged in the valve body, a plurality of liquid holes being arranged on the periphery of the valve body, the valve core being a spherical body, at least two flow channels being arranged in the valve core, a rotating assembly being rotatably arranged on the valve body, the rotating assembly being connected to the valve core to drive the valve core to rotate; when the valve core rotates to a set angle, at least one of the flow channels is respectively connected to the corresponding liquid hole to form a passage, so that the ball valve is in an open state, and the rotation of the valve core can switch different flow channels to be connected to the liquid hole to form a passage. The present invention sets a plurality of flow channels in the valve core, and uses a rotating assembly to drive the valve core to rotate in the valve body, so as to switch different flow channels to be connected to different liquid holes to form passages of different shapes, thereby achieving that a ball valve can be used in different occasions, thereby expanding the scope of application of the ball valve.

Description

Technical Field

[0001] The invention relates to the technical field of ball valves, and in particular to a ball valve with switchable flow channels. Background Art

[0002] The four-way ball valve in the prior art can be divided into straight-line type, L-type and T-type according to the different flow channels in the valve core. The straight-line type means that the flow channel set in the valve core is straight-line type. After the four-way ball valve is opened, the fluid passes through the four-way ball valve along the straight-line route. The L-type means that the flow channel set in the valve core is L-shaped. After the four-way ball valve is opened, the fluid passes through the four-way ball valve along the L-shaped route. The T-type means that the flow channel set in the valve core is T-shaped. After the four-way ball valve is opened, the fluid passes through the four-way ball valve along the T-shaped route. The passages formed by different valve cores are single and cannot meet the use requirements of passages of various shapes, thereby limiting the scope of application of the ball valve. Summary of the invention

[0003] In order to overcome the deficiencies of the prior art, the present invention proposes a ball valve with switchable flow passages to solve the technical problem that the ball valve in the prior art cannot meet the use requirements of passages of various shapes, thereby limiting the application scope of the ball valve.

[0004] A ball valve with switchable flow passage of the present invention adopts the following technical solution:

[0005] A ball valve with switchable flow channels comprises a valve body, a valve cover and a valve core rotatably arranged in the valve body, a plurality of liquid through holes being arranged on the periphery of the valve body, the valve core being a spherical body, at least two flow channels being arranged in the valve core, a rotating assembly being rotatably arranged on the valve body, the rotating assembly being connected to the valve core so as to be able to drive the valve core to rotate; when the valve core is rotated to a set angle, at least one of the flow channels is respectively connected to the corresponding liquid through hole to form a passage, so that the ball valve is in an open state, and the rotation of the valve core can switch different flow channels to be connected to the liquid through holes to form a passage.

[0006] Further, the valve core is composed of two hemispherical valve flaps facing each other, the two valve flaps respectively include an outer spherical surface and a plane located on one side of the outer spherical surface, the planes of the two valve flaps are mutually attached and vertically arranged, and pass through the center of the valve core, the two valve flaps are respectively a first valve flap and a second valve flap, the rotating assembly includes a rotating sleeve rotatably installed in the valve body and a rotating rod coaxially inserted in the rotating sleeve, the rotating rod is rotatably arranged relative to the rotating sleeve, the rotating axes of the rotating sleeve and the rotating rod extend in the up and down directions, and are coplanar with the planes of the first valve flap and the second valve flap, the lower end of the rotating sleeve is connected to the first valve flap, the lower end of the rotating rod is transmission-connected to the second valve flap, the upper ends of the rotating sleeve and the rotating rod respectively have driving parts that can drive the rotating sleeve and the rotating rod to rotate around their own axes, when the rotating sleeve rotates, it can drive the first valve flap and the second valve flap to rotate around the first rotation axis, so as to switch different liquid through holes so that the flow channel in the valve core forms a passage with different liquid through holes, and the first rotation axis is coaxial with the rotating sleeve.

[0007] Furthermore, a circle of bevel gear ring is provided on the periphery of the plane of the second valve disc, and the lower end of the rotating rod is connected to a bevel gear, and the bevel gear is meshed with the bevel gear ring for transmission. The second valve disc can rotate around a second rotation axis relative to the first valve disc, and the second rotation axis passes through the center of the valve core and is perpendicular to the plane of the second valve disc and the first valve disc. When the rotating rod rotates relative to the rotating sleeve, the bevel gear drives the second valve disc to rotate around the second rotation axis to switch different flow channels in the valve core to connect with the liquid through hole to form a passage.

[0008] Further, a first channel is provided in the first valve disc, and the two ends of the first channel have a first inlet and a first outlet, the first inlet is located on the outer spherical surface of the first valve disc, and is used to be connected to one of the liquid through holes, the first outlet is located on the plane of the first valve disc and is at a central position, a second channel is provided in the second valve disc, the second channel is a Y-shaped three-way structure, the second channel has an inlet and two outlets, namely the second inlet, the second outlet and the third outlet, the second inlet is located on the plane of the second valve disc and is at a central position, the second inlet and the first outlet are always corresponding to each other and are connected to each other, the second outlet and the third outlet are both located on the outer spherical surface of the second valve disc, a first flow channel is formed between the second outlet and the first inlet, and a second flow channel is formed between the third outlet and the first inlet, and when the second valve disc rotates around the second rotation axis, the second outlet and the third outlet are respectively connected to different liquid through holes to switch different flow channels to form a passage.

[0009] Further, a branch channel is provided in the first valve flap, one end of the branch channel is connected between the first inlet and the first outlet of the first channel, and the other end is located on the plane of the first valve flap to form a fourth outlet, and the fourth outlet is located on one side of the radial direction of the first outlet; a third channel is provided in the second valve flap in parallel with the second channel, one end of the third channel is located on the plane of the second valve flap to form a third inlet, and the other end is located on the outer spherical surface of the second valve flap to form a fifth outlet, the third inlet is used to communicate with the fourth outlet of the branch channel, and the fifth outlet is used to communicate with one of the liquid holes, when the third channel is connected with the branch channel, a third flow channel is formed, and when the second valve flap rotates around the second rotation axis, at least one of the first flow channel, the second flow channel and the third flow channel can be connected to the liquid hole to form a passage.

[0010] Furthermore, a mounting hole is provided on one of the two planes of the first valve flap and the second valve flap, and a corresponding positioning hole is provided on the other plane. The mounting holes and the positioning holes are arranged in a one-to-one correspondence. An elastic pin is installed in the mounting hole through a spring top. When the second valve flap rotates around the second rotation axis relative to the first valve flap by a set angle, the elastic pin extends into the positioning hole under the elastic force of the spring to remind the second valve flap to rotate into place. A guiding inclined surface is provided at the opening of the positioning hole to squeeze the elastic pin when the second valve flap rotates relative to the first valve flap, so that the elastic pin retracts into the mounting hole.

[0011] Furthermore, four mounting holes and four positioning holes are evenly spaced apart along the circumference of the second rotation axis.

[0012] Furthermore, the mounting hole is arranged on the first valve flap, and the positioning hole is arranged on the second valve flap.

[0013] Furthermore, the upper end of the first valve flap is fixedly connected to a fixed sleeve whose axis extends in the up-down direction, the fixed sleeve is coaxially arranged with the rotating sleeve, the upper end of the fixed sleeve is inserted into the lower end of the rotating sleeve, the fixed sleeve and the rotating sleeve are locked, the upper end of the rotating sleeve is connected to a rotating cover for manual screwing, and when the rotating cover is screwed, the rotating sleeve, the fixed sleeve and the first valve flap can be driven to rotate around the first rotation axis, the lower end of the rotating rod is inserted into the fixed sleeve, the upper end of the rotating rod extends above the rotating cover, and the upper end of the rotating rod is provided with a handle for manual screwing, and when the handle is screwed, the rotating rod drives the second valve flap to rotate relative to the first valve flap around the second rotation axis through the bevel gear and the bevel gear ring, and the handle and the rotating cover respectively constitute the driving part.

[0014] Furthermore, four liquid through holes are evenly arranged along the circumference of the valve body, and the periphery of the valve body is provided with plug holes corresponding to the liquid through holes one by one, a connecting column is fixed in each plug hole, and each connecting column is provided with one of the liquid through holes.

[0015] The beneficial effects of the present invention are as follows: a ball valve with switchable flow channels of the present invention, by arranging multiple flow channels in the valve core and using a rotating assembly to drive the valve core to rotate in the valve body, thereby switching different flow channels to be connected with different liquid holes to form passages of different shapes, thereby achieving a ball valve that can be used in different occasions, thereby expanding the scope of application of the ball valve.

[0016] In addition, the present invention divides the spherical valve core into two parts to form two valve flaps. The two valve flaps can not only rotate around the first rotation axis at the same time, but also can rotate relatively around the second rotation axis. When the two valve flaps only rotate relatively around the second rotation axis, different flow channels in the two valve flaps will be switched to connect with the set liquid holes to form different passages. When the two valve flaps do not rotate relatively but only rotate synchronously around the first rotation axis, without switching the flow channel in the valve core, the same flow channel can be connected with different liquid holes on the periphery of the valve body, that is, different liquid holes on the circumference of the valve body can be converted to realize liquid inlet and outlet, further expanding the scope of application of the ball valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work. Those skilled in the art should understand that these drawings are not necessarily drawn to scale.

[0018] Figure 1 It is a three-dimensional schematic diagram of an embodiment of a ball valve with switchable flow passage of the present invention;

[0019] Figure 2 It is a front view of an embodiment of a ball valve with switchable flow passage of the present invention;

[0020] Figure 3 It is an assembly diagram of an embodiment of a ball valve with switchable flow passage of the present invention;

[0021] Figure 4 for Figure 2 Middle AA section view (the second valve disc is in the first position);

[0022] Figure 5 A state diagram of an embodiment of a ball valve with switchable flow passage according to the present invention when the second valve disc is in the second position;

[0023] Figure 6 A state diagram of an embodiment of a ball valve with switchable flow passage according to the present invention when the second valve disc is in the third position;

[0024] Figure 7 It is an exploded schematic diagram of a valve core in one embodiment of a ball valve with switchable flow passage of the present invention;

[0025] Figure 8 An exploded schematic diagram of a valve core in one embodiment of a ball valve with switchable flow passage according to the present invention (another orientation);

[0026] Fig. 9 A vertical cross-sectional schematic diagram of a second valve flap in an embodiment of a ball valve with switchable flow passage according to the present invention;

[0027] Fig.10 A horizontal cross-sectional schematic diagram of a second valve disc in an embodiment of a ball valve with switchable flow passage according to the present invention;

[0028] Fig.11 A horizontal cross-sectional schematic diagram of a first valve disc in an embodiment of a ball valve with switchable flow passage according to the present invention;

[0029] In the figure: 100, connecting column; 101, liquid hole; 102, valve body; 103, valve cover; 104, rotating cover; 1041, rotating sleeve; 105, rotating rod; 1051, bevel gear; 1052, filler; 106, push plate; 107, sealing end cover; 108, handle; 200, first valve disc; 2001, spring; 2002, elastic pin; 2003, fixing sleeve; 2004, first channel; 2005, branch channel; 2006, first inlet; 2007, first outlet; 2008, first flow channel; 2009, second flow channel; 201, second valve disc; 2011, bevel gear ring; 2012, positioning hole; 2013, third channel; 2014, second channel; 2015, third flow channel; 210, second outlet; 211, third outlet; 212, second inlet. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0031] An embodiment of a ball valve with switchable flow passage according to the present invention is as follows: Figures 1 to 11As shown, the ball valve with switchable flow path includes a valve body 102, a valve cover 103 and a valve core rotatably arranged in the valve body 102, the valve cover 103 is fixedly connected to the upper end of the valve body 102 by fastening bolts, the outer periphery of the valve body 102 is evenly spaced with four plug holes, each of which is fixed with a connecting column 100, each connecting column 100 is provided with a liquid hole 101, and the liquid hole 101 is used to communicate with other fluid pipelines to achieve liquid inflow and outflow of the ball valve. In other embodiments, the number of connecting columns 100 can be set to three or five or more.

[0032] In the present invention, the valve core is a spherical body, and the valve core is rotatably installed in the valve body 102. Specifically, the valve body 102 has an installation chamber that is adapted to the shape of the valve core, and the valve core is rotatably installed in the installation chamber. Before the valve core is installed in the installation chamber, the valve body 102 includes two separate upper and lower shells. After the valve core is placed between the upper and lower shells, the valve core is installed in the valve body 102 by welding and fixing the upper and lower shells. In order to improve the sealing effect, a sealing ring is provided between one end of each connecting column 100 extending into the valve body 102 and the outer wall of the valve core. In order to ensure the stability of the valve core in the valve body 102, an upper gasket and a lower gasket are provided on the upper and lower sides of the valve core, respectively.

[0033] In the present invention, three flow channels are arranged in the valve core, namely the first flow channel 2008, the second flow channel 2009 and the third flow channel 2015. The flow paths of the three flow channels are different. Of course, in other embodiments, only two flow channels or more flow channels may be arranged. At the same time, a rotating assembly is arranged on the valve body 102 for rotation, and the rotating assembly is connected to the valve core to drive the valve core to rotate in the valve body 102; when the valve core rotates to a set angle, one or two of the three flow channels are connected to the corresponding liquid holes 101 to form a passage, so that the ball valve is in an open state. By rotating the valve core, different flow channels can be switched to connect with the liquid holes 101 to form a passage, thereby switching the path of the fluid passing through the ball valve, which can expand the application range of the ball valve.

[0034] In this embodiment, the valve core is composed of two hemispherical valve flaps that are face-to-face fitted, and the two valve flaps are respectively a first valve flap 200 and a second valve flap 201. The two valve flaps respectively include an outer spherical surface and a plane located on one side of the outer spherical surface, and the planes of the two valve flaps are fitted to each other and vertically arranged, and pass through the center of the valve core. In addition, the rotating assembly includes a rotating sleeve 1041 rotatably installed in the valve body 102 and a rotating rod 105 coaxially inserted in the rotating sleeve 1041, and the rotating rod 105 is rotatably arranged relative to the rotating sleeve 1041, and the rotating axes of the rotating sleeve 1041 and the rotating rod 105 extend in the up-down direction and are coplanar with the planes of the first valve flap 200 and the second valve flap 201. The lower end of the rotating sleeve 1041 is connected to the first valve flap 200, and the lower end of the rotating rod 105 is transmission-connected to the second valve flap 201. The upper ends of the rotating sleeve 1041 and the rotating rod 105 respectively have driving parts that can drive the rotating sleeve 1041 and the rotating rod 105 to rotate around their own axes. The driving parts can respectively drive the rotating sleeve 1041 and the rotating rod 105 to rotate around their own axes.

[0035] In this embodiment, a bevel gear ring 2011 is provided on the outer periphery of the plane of the second valve flap 201, and a bevel gear 1051 is connected to the lower end of the rotating rod 105. The bevel gear 1051 meshes with the bevel gear ring 2011 for transmission. The second valve flap 201 can rotate relative to the first valve flap 200 around the second rotation axis. The second rotation axis passes through the center of the valve core and is perpendicular to the plane of the second valve flap 201 and the first valve flap 200. When the rotating sleeve 1041 rotates, it can drive the first valve flap 200 and the second valve flap 201 to rotate around the first rotation axis to switch different liquid holes 101 so that the flow channel in the valve core forms a passage with different liquid holes 101. The first rotation axis is coaxial with the rotating sleeve 1041. When the rotating rod 105 rotates relative to the rotating sleeve 1041, the bevel gear 1051 drives the second valve flap 201 to rotate around the second rotation axis to switch different flow channels in the valve core to communicate with the liquid holes 101 to form a passage.

[0036] In this embodiment, the three flow channels are specifically arranged such that the three flow channels respectively penetrate the first valve flap 200 and the second valve flap 201, and the three flow channels share the same inlet. The first valve flap 200 has a first channel 2004, and the first channel 2004 has a first inlet 2006 and a first outlet 2007 at both ends. The first inlet 2006 is located on the outer spherical surface of the first valve flap 200, and is used to connect with one of the liquid holes 101; the first outlet 2007 is located on the plane of the first valve flap 200 and is located at the center. The second valve flap 201 is provided with a second channel 2014, which is a Y-shaped three-way structure. The second channel 2014 has an inlet and two outlets, namely, a second inlet 212, a second outlet 210, and a third outlet 211. The second inlet 212 is located on the plane of the second valve flap 201 and is in the center. The second inlet 212 and the first outlet 2007 always correspond to each other and are connected to each other. The second outlet 210 and the third outlet 211 are both located on the outer spherical surface of the second valve flap 201. The first flow channel 2008 is formed between the second outlet 210 and the first inlet 2006, and the second flow channel 2009 is formed between the third outlet 211 and the first inlet 2006. When the second valve flap 201 rotates around the second rotation axis, the second outlet 210 and the third outlet 211 are respectively connected to different liquid holes 101 to switch different flow channels to form a passage.

[0037] In this embodiment, a branch channel 2005 is provided on one side of the first channel 2004 in the first valve flap 200, one end of the branch channel 2005 is connected between the first inlet 2006 and the first outlet 2007 of the first channel 2004, and the other end is located on the plane of the first valve flap 200 to form a fourth outlet, and the fourth outlet is located on one side of the radial direction of the first outlet 2007. A third channel 2013 is provided in the second valve flap 201 in parallel with the second channel 2014, and one end of the third channel 2013 is located on the second valve flap 2014. 1, forming a third inlet, and the other end is located on the outer spherical surface of the second valve disc 201, forming a fifth outlet, the third inlet is used to communicate with the fourth outlet of the branch channel 2005, and the fifth outlet is used to communicate with one of the liquid holes 101. When the third channel 2013 is connected with the branch channel 2005, the third flow channel 2015 is formed. When the second valve disc 201 rotates around the second rotation axis, at least one of the first flow channel 2008, the second flow channel 2009 and the third flow channel 2015 can be connected with the liquid hole 101 to form a passage.

[0038] In this embodiment, in order to locate the angle at which the second valve flap 201 rotates relative to the first valve flap 200 around the second rotation axis, a positioning structure is provided between the first valve flap 200 and the second valve flap 201. Specifically, a mounting hole is provided on one of the two planes of the first valve flap 200 and the second valve flap 201, and a positioning hole 2012 is correspondingly provided on the other plane. The mounting hole and the positioning hole 2012 are arranged in a one-to-one correspondence. An elastic pin 2002 is installed in the mounting hole through the top of a spring 2001. When the second valve flap 201 rotates relative to the first valve flap 200 around the second rotation axis by a set angle, the elastic pin 2002 extends into the positioning hole 2012 under the elastic force of the spring 2001 to remind the second valve flap 201 to rotate into place. The opening of the positioning hole 2012 is provided with a guiding inclined surface to squeeze the elastic pin 2002 when the second valve flap 201 rotates relative to the first valve flap 200, so that the elastic pin 2002 retracts into the mounting hole.

[0039] In this embodiment, the mounting hole is provided on the first valve flap 200, and the positioning hole 2012 is provided on the second valve flap 201. Four mounting holes and positioning holes 2012 are evenly spaced along the circumference of the second rotation axis. Accordingly, the second valve flap 201 has four positions in which it rotates relative to the first valve flap 200, namely, the first position, the second position, the third position, and the fourth position. When the second valve flap 201 is in the first position, as shown in FIG. Figure 4 As shown, at this time, the first inlet 2006 at one end of the first flow channel 2008 is connected to one of the liquid holes 101, and the other end of the first flow channel 2008 is connected to an adjacent liquid hole 101, so that the fluid flows through the ball valve in an L-shaped path. When the second valve flap 201 rotates 90° from the first position, as shown in FIG. Figure 5 As shown, at this time, the second valve flap 201 is in the second position. Since the position of the first valve flap 200 is fixed at this time, the part of the second flow channel 2009 located in the first valve flap 200 is fixed. After the second valve flap 201 rotates, the two ends of the second flow channel 2009 are respectively connected to the two opposite liquid holes 101. At this time, the fluid flows through the ball valve in a straight path. When the second valve flap 201 rotates 90° from the second position, as shown in FIG. Figure 6 As shown, at this time, the second valve flap 201 is in the third position, and two flow channels form a passage, that is, the two ends of the third flow channel 2015 are respectively connected to the two adjacent liquid holes 101, and the two ends of the second flow channel 2009 are respectively connected to the two opposite liquid holes 101. Since the two flow channels share the same liquid hole 101, the fluid flows through the ball valve in a T-shaped path. When the second valve flap 201 rotates 90° from the third position to the fourth position, at this time, the three flow channels are closed and no passage can be formed.

[0040] In this embodiment, the upper end of the first valve flap 200 is fixedly connected with a fixed sleeve 2003 whose axis extends in the up-down direction. The fixed sleeve 2003 is coaxially arranged with the rotating sleeve 1041. The upper end of the fixed sleeve 2003 is inserted into the lower end of the rotating sleeve 1041. The fixed sleeve 2003 and the rotating sleeve 1041 are locked. The upper end of the rotating sleeve 1041 is connected with a rotating cover 104 for manual screwing. When the rotating cover 104 is screwed, the rotating sleeve 1041, the fixed sleeve 2003 and the first valve flap 200 can be driven to rotate around the first rotating axis. The lower end of the rotating rod 105 is inserted into the fixed sleeve 2003, and the upper end of the rotating rod 105 extends above the rotating cover 104. The upper end of the rotating rod 105 is provided with a handle 108 for manual screwing. When the handle 108 is turned, the rotating rod 105 drives the second valve flap 201 to rotate relative to the first valve flap 200 around the second rotation axis through the bevel gear 1051 and the bevel gear ring 2011. The handle 108 and the rotating cover 104 respectively constitute the driving part. In order to facilitate the observation of the positions of the first valve flap 200 and the second valve flap 201 in the circumferential direction of the first rotation axis, push plates 106 are respectively provided on the radially opposite sides of the valve cover 103. One of the push plates 106 is used as an indicator plate. When the indicator plate corresponds to the position of one of the connecting columns 100, the first inlet 2006 on the first valve flap 200 is connected to the connecting column 100. At the same time, an indicator line is provided on the handle 108 at the upper end of the rotating rod 105. The upper end of the rotating cover 104 is connected to a sealing end cover 107. The sealing end cover 107 is provided with marks corresponding to the four positions of the second valve flap 201. In addition, a filler 1052 is filled between the rotating rod 105 , the rotating sleeve 1041 and the rotating cover 104 .

[0041] When a ball valve with a switchable flow channel is used, the four connecting columns 100 on the periphery of the valve body 102 are respectively connected to other fluid pipelines. When in use, the rotating sleeve 1041 and the rotating rod 105 are screwed synchronously to realize the rotation of the entire valve core around the first rotation axis, so that not only the ball valve can be opened or closed, but also different flow holes can be switched to enter and exit the liquid. When only the rotating rod 105 is rotated, the bevel gear 1051 at the lower end of the rotating rod 105 will drive the second valve flap 201 to rotate around the second rotation axis relative to the first valve flap 200, and then one or two of the first flow channel 2008, the second flow channel 2009 and the third flow channel 2015 can be selected to be connected to the flow hole, and then an L-shaped, straight or T-shaped passage can be formed, so that a ball valve can be used in different occasions, expanding the scope of application of the ball valve.

[0042] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A ball valve with switchable flow path, comprising a valve body (102), a valve cover (103) and a valve core rotatably arranged in the valve body (102), wherein a plurality of liquid holes (101) are arranged on the periphery of the valve body (102), characterized in that: The valve core is a spherical body, and at least two flow channels are arranged in the valve core. A rotating assembly is rotatably arranged on the valve body (102), and the rotating assembly is connected to the valve core so as to drive the valve core to rotate. When the valve core rotates to a set angle, at least one of the flow channels is connected to the corresponding liquid through hole (101) to form a passage, so that the ball valve is in an open state. The rotation of the valve core can switch different flow channels to be connected to the liquid through hole (101) to form a passage. The valve core is composed of two hemispherical valve flaps that are face-to-face fitted together. The two valve flaps respectively include an outer spherical surface and a plane located on one side of the outer spherical surface. The planes of the two valve flaps are fitted together and vertically arranged, and pass through the center of the valve core. The two valve flaps are respectively a first valve flap (200) and a second valve flap (201). The rotating assembly includes a rotating sleeve (1041) rotatably mounted in the valve body (102) and a rotating rod (105) coaxially inserted into the rotating sleeve (1041). The rotating rod (105) is rotatably arranged relative to the rotating sleeve (1041); the rotating axes of the rotating sleeve (1041) and the rotating rod (105) extend in the up-down direction and are coplanar with the planes of the first valve flap (200) and the second valve flap (201); the lower end of the rotating sleeve (1041) is connected to the first valve flap (200); the lower end of the rotating rod (105) is drivingly connected to the second valve flap (201); the rotating sleeve (1041) and the rotating rod (105) are The upper end of the movable rod (105) has a driving portion capable of driving the rotating sleeve (1041) and the rotating rod (105) to rotate around its own axis. When the rotating sleeve (1041) rotates, it can drive the first valve flap (200) and the second valve flap (201) to rotate around a first rotation axis, so as to switch different liquid holes (101) so that the flow channel in the valve core forms a passage with the different liquid holes (101). The first rotation axis is coaxial with the rotating sleeve (1041).

2. The ball valve with switchable flow path according to claim 1, characterized in that: A bevel gear ring (2011) is provided on the periphery of the plane of the second valve flap (201), and a bevel gear (1051) is connected to the lower end of the rotating rod (105), and the bevel gear (1051) and the bevel gear ring (2011) are meshed and transmitted. The second valve flap (201) can rotate around a second rotation axis relative to the first valve flap (200), and the second rotation axis passes through the center of the valve core and is perpendicular to the plane of the second valve flap (201) and the first valve flap (200). When the rotating rod (105) rotates relative to the rotating sleeve (1041), the bevel gear (1051) drives the second valve flap (201) to rotate around the second rotation axis, so as to switch different flow channels in the valve core to connect with the liquid through hole (101) to form a passage.

3. The ball valve with switchable flow path according to claim 2, characterized in that: A first channel (2004) is provided in the first valve flap (200), and the first channel (2004) has a first inlet (2006) and a first outlet (2007) at both ends. The first inlet (2006) is located on the outer spherical surface of the first valve flap (200) and is used to connect with one of the liquid holes (101). The first outlet (2007) is located on the plane of the first valve flap (200) and is located at the center. A second channel (2014) is provided in the second valve flap (201), and the second channel (2014) is a Y-shaped three-way structure. The second channel (2014) has an inlet and two outlets, namely a second inlet (212) and a second outlet (210) and a third outlet (211). The second inlet (212) is located on the plane of the second valve flap (201) and at the center. The second inlet (212) and the first outlet (2007) always correspond to each other and are connected to each other. The second outlet (210) and the third outlet (211) are both located on the outer spherical surface of the second valve flap (201). A first flow channel (2008) is formed between the second outlet (210) and the first inlet (2006), and a second flow channel (2009) is formed between the third outlet (211) and the first inlet (2006). When the second valve flap (201) rotates around the second rotation axis, the second outlet (210) and the third outlet (211) are respectively connected to different liquid holes (101) to switch different flow channels to form a passage.

4. The ball valve with switchable flow path according to claim 3, characterized in that: The first valve flap (200) is provided with a branch channel (2005), one end of the branch channel (2005) is connected between the first inlet (2006) and the first outlet (2007) of the first channel (2004), and the other end is located on the plane of the first valve flap (200) to form a fourth outlet, and the fourth outlet is located on one side of the radial direction of the first outlet (2007); the second valve flap (201) is provided with a third channel (2013) parallel to the second channel (2014), one end of the third channel (2013) is located on the plane of the second valve flap (201) to form a third outlet. The third inlet is located at one end of the second valve flap (201), and the other end is located on the outer spherical surface of the second valve flap (201), forming a fifth outlet. The third inlet is used to communicate with the fourth outlet of the branch channel (2005), and the fifth outlet is used to communicate with one of the liquid holes (101). When the third channel (2013) is connected to the branch channel (2005), a third flow channel (2015) is formed. When the second valve flap (201) rotates around the second rotation axis, at least one of the first flow channel (2008), the second flow channel (2009) and the third flow channel (2015) can be connected to the liquid hole (101) to form a passage.

5. The ball valve with switchable flow path according to claim 4, characterized in that: A mounting hole is provided on one of the two planes of the first valve flap (200) and the second valve flap (201), and a positioning hole (2012) is correspondingly provided on the other plane. The mounting holes and the positioning holes (2012) are arranged in a one-to-one correspondence. An elastic pin (2002) is installed in the mounting hole through a spring (2001). When the second valve flap (201) rotates relative to the first valve flap (200) around a second rotation axis at a set angle, the elastic pin (2002) extends into the positioning hole (2012) under the elastic force of the spring (2001) to remind the second valve flap (201) to rotate into place. A guiding inclined surface is provided at the opening of the positioning hole (2012) to squeeze the elastic pin (2002) when the second valve flap (201) rotates relative to the first valve flap (200), so that the elastic pin (2002) retracts into the mounting hole.

6. The ball valve with switchable flow path according to claim 5, characterized in that: Four mounting holes and positioning holes (2012) are evenly spaced along the circumference of the second rotation axis.

7. The ball valve with switchable flow path according to claim 6, characterized in that: The mounting hole is arranged on the first valve flap (200), and the positioning hole (2012) is arranged on the second valve flap (201).

8. The ball valve with switchable flow path according to any one of claims 1 to 7, characterized in that: The upper end of the first valve flap (200) is fixedly connected to a fixed sleeve (2003) whose axis extends in the up-down direction; the fixed sleeve (2003) is coaxially arranged with the rotating sleeve (1041); the upper end of the fixed sleeve (2003) is inserted into the lower end of the rotating sleeve (1041); the fixed sleeve (2003) and the rotating sleeve (1041) are locked in rotation; the upper end of the rotating sleeve (1041) is connected to a rotating cover (104) for manual screwing; when the rotating cover (104) is screwed, the rotating sleeve (1041), the fixed sleeve (2003) and the first valve flap ( The rotating cover (104) is provided with a handle (108) for being screwed by a person. When the handle (108) is screwed, the rotating rod (105) drives the second valve flap (201) to rotate relative to the first valve flap (200) around the second rotation axis via the bevel gear (1051) and the bevel gear ring (2011). The handle (108) and the rotating cover (104) respectively constitute a driving part.

9. The ball valve with switchable flow path according to any one of claims 1 to 7, characterized in that: Four of the liquid through holes (101) are evenly arranged along the circumference of the valve body (102); the periphery of the valve body (102) is provided with plug holes corresponding to the liquid through holes (101) one by one; a connecting column (100) is fixed in each plug hole; and each connecting column (100) is provided with one of the liquid through holes (101).

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