Multi-way water valve

Abstract

The utility model provides a multi-way water valve which comprises a driving device, a valve element and a shell, the valve element is connected with the inner side wall of the shell in a sliding mode, and the driving device is used for driving the valve element to slide. An outer flow groove is formed in the side wall of the valve element, an inner flow hole is formed in the valve element, and a plurality of water holes are formed in the side wall of the shell at intervals. The outer flow groove and the inner flow hole are not communicated with each other; in the plurality of water holes, two water holes are communicated with one of the inner flow hole and the outer flow groove, and the other water holes are communicated with the other one of the inner flow hole and the outer flow groove. The utility model belongs to the technical field of valves, and aims at solving the problem that a multi-way water valve in the prior art is complex in structure. The water valve has the advantages that the water valve is convenient to operate and simple in structure.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to a multi-way water valve. Background Art

[0002] Multi-way water valves such as three-way water valves or four-way water valves are widely used in automobiles. Existing multi-way water valves usually include structures such as valve bodies, valve cores, driving devices, and transmission mechanisms. Multiple channels are opened inside the valve core, and these channels are connected to multiple inlets and outlets on the valve body. When the valve core rotates, different channels will be connected or disconnected from each other, so as to realize the switching of fluid between different flow channels.

[0003] However, the way to realize the rotation of the valve core is that a transmission mechanism is connected between the driving device and the valve core, and the driving device transmits the rotational force to the valve core through the transmission mechanism to realize the rotational control of the valve core. Among them, the driving device usually uses a motor electric cylinder or a cylinder, etc. to achieve driving, and the transmission mechanism usually uses a worm and gear transmission or a gear transmission, etc. to achieve transmission.

[0004] In summary, the overall structure of the existing multi-way water valve is relatively complex, and it is more difficult to process and manufacture, with a higher cost. Content of the Utility Model

[0005] The utility model provides a multi-way water valve to solve the defect that the structure of the multi-way water valve in the prior art is relatively complex, and to realize a relatively simple structure of the multi-way water valve.

[0006] The utility model provides a multi-way water valve, which includes a driving device, a valve core, and a housing. The valve core is slidably connected to the inner side wall of the housing, and the driving device is used to drive the valve core to slide;

[0007] An outer flow groove is arranged on the side wall of the valve core, an inner flow hole is opened in the valve core, and at least three water holes are spaced apart on the side wall of the housing; the outer flow groove and the inner flow hole are not communicated with each other;

[0008] One of the inner flow hole and the outer flow groove is communicated with two of the at least three water holes, and the other of the inner flow hole and the outer flow groove is communicated with the remaining water holes.

[0009] According to the setting of the sliding of the valve core of the multi-way water valve of the present utility model, when it is necessary to switch the flow channel of the water flow, after moving the valve core to the corresponding position through the driving device, the corresponding two water holes communicate with the outer flow groove or the inner flow hole of the valve core, so that when it is necessary to switch to the corresponding outer flow channel, the outer flow groove of the valve core is connected to the corresponding two water holes to form the corresponding outer flow channel; when it is necessary to switch to the corresponding inner flow channel, the inner flow hole of the valve core is connected to the corresponding two water holes to form the corresponding inner flow channel, thereby realizing the switching of the fluid between different flow channels. Since the water valve directly drives the valve core to move linearly through the driving device to realize the flow channel switching, there is no need for transmission mechanisms such as gears or turbines, and the operation is convenient while the structure is relatively simple.

[0010] In addition, a multi-way water valve according to the present utility model may further have the following additional technical features:

[0011] In some embodiments of the present utility model, the valve core includes a moving rod and a sliding cylinder. The sliding cylinder is slidably connected to the inner side wall of the housing. An outer flow groove is provided on the outer side wall of the sliding cylinder, and an inner flow hole is opened in the sliding cylinder. The sliding cylinder is connected to the driving device through the moving rod.

[0012] By adopting the above embodiments, the reliable sliding of the valve core relative to the housing is realized through the setting of the sliding cylinder, and the reliable driving of the driving device on the valve core is realized through the setting of the moving rod.

[0013] In some embodiments of the present utility model, the sliding cylinder includes a sleeve and a sliding baffle. A sliding baffle is provided at each end of the sleeve. Both sliding baffles are slidably connected to the inner side wall of the housing. The sleeve and / or the sliding baffle are connected to the driving device through the moving rod. The two sliding baffles and the sleeve enclose to form an outer flow groove.

[0014] By adopting the above embodiments, the two sliding baffles cooperate with the sleeve to form an outer flow groove through the setting of the sleeve and the sliding baffle. The outer flow groove cooperates with the inner side wall of the housing to form an outer flow hole. When the valve core slides to the designated position, the corresponding two water holes, the outer flow hole and the inner side wall of the housing form an outer flow channel, so as to realize the reliable flow of the liquid through the outer flow channel.

[0015] In some embodiments of the present utility model, the valve core further includes a sealing ring. A sealing ring is provided between each sliding baffle and the inner side wall of the housing.

[0016] By adopting the above embodiments, an interference fit is formed between the sliding baffle and the inner side wall of the housing through the setting of the sealing ring, thereby ensuring the sealing effect of the valve core relative to the housing, avoiding the mutual communication between the outer flow groove and the inner flow hole, and ensuring the reliable and convenient switching between the various flow channels of the water valve.

[0017] In some embodiments of the present utility model, the driving device includes a stator, a rotor, and a rotating screw. The rotor is disposed inside the stator. One end of the rotating screw is connected to the rotor, and the other end of the rotating screw is threadedly connected to a moving rod. The stator is interconnected with the housing.

[0018] By adopting the above embodiments, the threaded connection between the rotating screw and the moving rod realizes a structure similar to a lead screw and nut. The cooperation between the rotor and the stator drives the rotation of the rotating screw, thereby driving the linear movement of the moving rod, driving the linear movement of the valve core, realizing the reliable linear movement of the valve core relative to the housing, and indirectly realizing the reliable switching of each flow channel.

[0019] In some embodiments of the present utility model, the rotating screw includes a retaining ring portion, a connecting rod portion, and a screw portion. One side of the retaining ring portion is connected to the connecting rod portion. The connecting rod portion is inserted into the rotor. The other side of the retaining ring portion is connected to the screw portion. The screw portion is threadedly connected to the moving rod.

[0020] By adopting the above embodiments, the setting of the retaining ring portion can prevent the excessive movement of the moving rod and ensure the reliability of the valve core operation.

[0021] In some embodiments of the present utility model, it further includes a motor base. The stator is interconnected with the housing through the motor base. One end of the rotating screw passes through the motor base and is connected to the rotor.

[0022] By adopting the above embodiments, the reliable connection between the stator and the housing is realized through the setting of the motor base.

[0023] In some embodiments of the present utility model, the valve core further includes a connecting member. The moving rod is connected to the sliding cylinder through the connecting member.

[0024] By adopting the above embodiments, the reliable connection between the moving rod and the sliding cylinder is realized through the setting of the connecting member.

[0025] In some embodiments of the present utility model, it further includes a bearing. A bearing is disposed between the rotating screw and the motor base.

[0026] By adopting the above embodiments, the smoothness and reliability of the rotation of the rotating screw are ensured through the setting of the bearing.

[0027] In some embodiments of the present utility model, the motor base includes a shell cover and a connecting shaft sleeve. One side of the shell cover is connected to the housing. The other side of the shell cover is connected to the connecting shaft sleeve and the stator;

[0028] The connecting shaft sleeve is inserted into the rotor. The rotating screw passes through the shell cover and the connecting shaft sleeve and is connected to the rotor. The bearing is disposed between the connecting shaft sleeve and the rotating screw.

[0029] By adopting the above embodiments, the rotation of the screw is fixed at two points through the arrangement of the connecting bushing and the rotor, thereby ensuring the smooth rotation of the screw.

[0030] In summary, the present application includes at least one of the following beneficial technical effects: through the arrangement of the sliding of the valve core of the multi-way water valve, when it is necessary to switch the flow channel of the water flow, after the valve core is moved to the corresponding position by the driving device, the corresponding two water holes are communicated with the outer flow groove or the inner flow hole of the valve core, so that when it is necessary to switch to the corresponding outer flow channel, the outer flow groove of the valve core is communicated with the corresponding two water holes to form the corresponding outer flow channel; when it is necessary to switch to the corresponding inner flow channel, the inner flow hole of the valve core is communicated with the corresponding two water holes to form the corresponding inner flow channel, thereby realizing the switching of the fluid between different flow channels. Since the water valve directly drives the valve core to move linearly through the driving device to realize the flow channel switching, there is no need for transmission mechanisms such as gears or turbines, and the operation is convenient while the structure is relatively simple. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] By reading the following detailed description of the preferred embodiments, various other advantages and benefits will become clear to those of ordinary skill in the art. The drawings are only for the purpose of showing the preferred embodiments and are not considered to be a limitation of the present invention. Moreover, throughout the drawings, the same reference numerals are used to represent the same components.

[0032] In the drawings:

[0033] Figure 1 Schematically shows a three-dimensional view of a multi-way water valve according to an embodiment of the present invention;

[0034] Figure 2 Schematically shows a cross-sectional view of a multi-way water valve as a four-way water valve according to an embodiment of the present invention;

[0035] Figure 3 Schematically shows a cross-sectional view of a multi-way water valve as a three-way water valve according to an embodiment of the present invention;

[0036] Figure 4 Schematically shows a three-dimensional view of the connection between the rotating screw and the magnetic ring support of a multi-way water valve according to an embodiment of the present invention;

[0037] Figure 5 Schematically shows a three-dimensional view of the rotating screw of a multi-way water valve according to an embodiment of the present invention;

[0038] Figure 6 Schematically shows a three-dimensional view of the valve core of a multi-way water valve according to an embodiment of the present invention;

[0039] Figure 7A perspective view of a motor base of a multi-way water valve according to an embodiment of the present utility model is schematically shown.

[0040] Reference numerals:

[0041] 1, stator; 2, housing; 21, first water hole; 22, second water hole; 23, third water hole; 24, fourth water hole; 3, mounting seat; 4, motor base; 41, shell cover; 42, first connecting seat; 43, connecting bushing; 44, second connecting seat; 5, power plug; 6, rotating screw; 61, connecting rod portion; 62, clamping block portion; 63, retaining ring portion; 64, screw portion; 65, shaft portion; 7, valve core; 71, moving rod; 72, sleeve; 73, sealing ring; 74, connecting member; 75, internal flow hole; 76, sliding baffle; 77, external flow groove; 8, rotor magnetic ring; 9, magnetic ring support; 91, connecting rod; 92, support plate; 93, connecting block; 10, bearing. Detailed embodiments

[0042] Hereinafter, exemplary embodiments of the present disclosure will be described in more detail with reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided so that the present disclosure can be more thoroughly understood and the scope of the present disclosure can be fully conveyed to those skilled in the art.

[0043] It should be understood that the terms used herein are for the purpose of describing specific exemplary embodiments only and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "a", "an", and "the" as used herein may also include the plural forms. The terms "comprising", "including", "containing", and "having" are inclusive and thus specify the presence of the stated features, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring them to be performed in the particular order described or illustrated, unless the order of performance is explicitly stated. It should also be understood that additional or alternative steps may be used.

[0044] Although terms such as first, second, and third may be used herein to describe multiple elements, components, regions, layers, and / or sections, these elements, components, regions, layers, and / or sections should not be limited by these terms. These terms may be used only to distinguish one element, component, region, layer, or section from another. Unless the context clearly indicates otherwise, terms such as "first" and "second" and other numerical terms do not imply an order or sequence when used in the text. Thus, the first element, component, region, layer, or section discussed below may be referred to as the second element, component, region, layer, or section without departing from the teachings of the exemplary embodiments.

[0045] For ease of description, spatial relative relationship terms may be used herein to describe the relationship of one element or feature shown in the figures to another element or feature, such as "inside", "outside", "inner side", "outer side", "below", "beneath", "above", "over", etc. Such spatial relative relationship terms are intended to include different orientations of the device in use or operation in addition to the orientations depicted in the figures. For example, if the device in the figures is flipped, an element described as "below" or "beneath" other elements or features will then be oriented "above" or "over" the other elements or features. Thus, the exemplary term "below" can include both the above and below orientations. The device may be otherwise oriented rotated 90 degrees or in other directions and the spatial relative relationship descriptors used in the text are interpreted accordingly.

[0046] As Figures 1 to 7 shown, according to an embodiment of the first aspect of the present invention, a multi-way water valve is proposed, which includes a driving device, a valve core 7, and a housing 2. The valve core 7 is slidably connected to the inner side wall of the housing 2, and the driving device is used to drive the valve core 7 to slide;

[0047] An outer flow groove 77 is provided on the side wall of the valve core 7, an inner flow hole 75 is formed in the valve core 7, and at least three water holes are spaced apart from each other on the side wall of the housing 2; the outer flow groove 77 and the inner flow hole 75 are not communicated with each other;

[0048] One of the inner flow hole 75 and the outer flow groove 77 is communicated with two of the at least three water holes, and the other of the inner flow hole 75 and the outer flow groove 77 is communicated with the remaining water holes.

[0049] In the above embodiment, it should be noted that the outer flow groove 77 and the inner side wall of the housing 2 are combined to form an outer flow hole;

[0050] As Figure 2As shown in the figure, when the multi-way water valve is a four-way water valve, the multiple water holes are respectively the first water hole 21, the second water hole 22, the third water hole 23 and the fourth water hole 24. The valve core 7 moves left and right. When the valve core 7 moves to the leftmost end, the first water hole 21, the outflow hole and the second water hole 22 are connected to form a first outflow channel, and the third water hole 23, the fourth water hole 24 and the inflow hole 75 are connected to form a first inflow channel;

[0051] When the valve core 7 moves to the middle, the second water hole 22, the outflow hole and the third water hole 23 are connected to form a second outflow channel, and the first water hole 21, the fourth water hole 24 and the inflow hole 75 are connected to form a second inflow channel;

[0052] When the valve core 7 moves to the rightmost end, the first water hole 21, the inflow hole 75 and the second water hole 22 are connected to form a third inflow channel, and the third water hole 23, the fourth water hole 24 and the outflow hole are connected to form a third outflow channel;

[0053] Finally, the switching between the various flow channels of the four-way water valve is realized.

[0054] As Figure 3 shown in the figure, when the multi-way water valve is a three-way water valve, the multiple water holes are respectively the first water hole, the second water hole, the third water hole and the fourth water hole, and the third water hole is in a blocked state to form a three-way.

[0055] When the valve core 7 moves to the leftmost end, the first water hole 21, the second water hole 22 and the outflow hole are connected to form an outflow channel;

[0056] When the valve core 7 moves to the middle, the first water hole 21, the fourth water hole 24 and the inflow hole 75 are connected to form an inflow channel;

[0057] When the valve core 7 moves to the rightmost end, the third water hole 23, the fourth water hole 24 and the inflow hole 75 are connected to form an inflow channel;

[0058] Finally, the switching between the various flow channels of the three-way water valve is realized.

[0059] In addition, it also includes a mounting seat 3, and the mounting seat 3 is arranged on the outer side wall of the housing 2.

[0060] The technical effects achieved by the above embodiments are as follows: By arranging the sliding of the valve core 7 of the multi-way water valve, when it is necessary to switch the flow path of the water flow, after moving the valve core 7 to the corresponding position by the driving device, the corresponding two water holes are communicated with the outer flow groove 77 or the inner flow hole of the valve core 7. When it is necessary to switch to the corresponding outer flow path, the outer flow groove 77 of the valve core 7 is communicated with the corresponding two water holes to form the corresponding outer flow path; when it is necessary to switch to the corresponding inner flow path, the inner flow hole of the valve core 7 is communicated with the corresponding two water holes to form the corresponding inner flow path, thereby realizing the switching of the fluid between different flow paths. Since the water valve directly drives the valve core 7 to move linearly through the driving device, no transmission mechanisms such as gears or turbines are required, and the operation is convenient while the structure is relatively simple.

[0061] Optionally, as Figure 1 , Figure 2 , Figure 3 and Figure 6 shown, the valve core 7 includes a moving rod 71 and a sliding cylinder. The sliding cylinder is slidably connected to the inner side wall of the housing 2. An outer flow groove 77 is provided on the outer side wall of the sliding cylinder, an inner flow hole 75 is opened in the sliding cylinder, and the sliding cylinder is connected to the driving device through the moving rod 71.

[0062] In the above optional embodiment, it should be noted that the driving device is one of an electric cylinder, a pneumatic cylinder, a hydraulic cylinder or a motor. When the driving device is an electric cylinder, a pneumatic cylinder or a hydraulic cylinder, the telescopic rod of the electric cylinder, the telescopic rod of the pneumatic cylinder or the telescopic rod of the hydraulic cylinder is connected to the end of the moving rod 71 away from the sliding cylinder. By the telescopic movement of the telescopic rod, the moving rod 71 is driven to move, and then the sliding cylinder is driven to move relative to the housing 2, thereby realizing the movement of the valve core 7;

[0063] When the driving device is a motor, the output shaft of the motor is connected with a screw rod, and the moving rod 71 is threadedly connected with the screw rod. By driving the screw rod to rotate by the output shaft of the motor, the moving rod is driven to move, realizing the movement of the valve core 7.

[0064] The beneficial effects of the above optional embodiment are as follows: The reliable sliding of the valve core 7 relative to the housing 2 is realized through the setting of the sliding cylinder, and the reliable driving of the driving device on the valve core 7 is realized through the setting of the moving rod 71.

[0065] Optionally, as Figure 1 , Figure 2 , Figure 3 and Figure 6 shown, the sliding cylinder includes a sleeve 72 and a sliding baffle 76. A sliding baffle 76 is provided at each end of the sleeve 72. Both sliding baffles 76 are slidably connected to the inner side wall of the housing 2. The sleeve 72 and / or the sliding baffle 76 are connected to the driving device through the moving rod 71. The two sliding baffles 76 and the sleeve 72 enclose to form the outer flow groove 77.

[0066] Optionally, as Figure 2 , Figure 3 and Figure 6 shown, the valve core 7 further includes a sealing ring 73, and a sealing ring 73 is provided between each sliding baffle 76 and the inner side wall of the housing 2.

[0067] In the above optional embodiment, it should be noted that the sealing ring 73 is arranged on the outer periphery of the sliding baffle 76. When the housing 2 is polygonal, the sliding baffle 76 is also polygonal, and the side length of the sliding baffle 76 is greater than the side length of the sleeve 72;

[0068] When the housing 2 is circular, the shape of the sliding baffle 76 is also circular, and the diameter of the sliding baffle 76 is greater than the diameter of the sleeve 72.

[0069] The valve core 7 further includes a connecting member 74. The moving rod 71 is connected to the sliding cylinder through the connecting member 74. The number of the connecting members 74 is multiple, and the multiple connecting members 74 are arranged on the moving rod 71 in a circumferential array. The moving rod 71 is connected to the sliding cylinder through the multiple connecting members 74.

[0070] The beneficial effects of the above optional embodiment are as follows: By providing the sleeve and the sliding baffle, two sliding baffles cooperate with the sleeve to form an outer flow groove, and the outer flow groove cooperates with the inner side wall of the housing to form an outer flow hole. When the valve core slides to a specified position, the corresponding two water holes, the outer flow hole and the inner side wall of the housing form an outer flow channel, so as to realize the reliable flow of the liquid through the outer flow channel. By providing the multiple connecting members 74, the reliable connection between the moving rod 71 and the sliding cylinder is realized.

[0071] Optionally, as Figures 1 to 7 shown, the driving device includes a stator 1, a rotor and a rotating screw 6. The rotor is arranged in the stator 1. One end of the rotating screw 6 is connected to the rotor, and the other end of the rotating screw 6 is threadedly connected to the moving rod 71. The stator 1 and the housing 2 are connected to each other.

[0072] In the above optional embodiment, it should be noted that the driving device further includes a power plug 5. The rotor includes a rotor magnetic ring 8 and a magnetic ring support 9. One end of the magnetic ring support 9 is installed on the rotor magnetic ring 8. The rotor magnetic ring 8 is located in the stator 1. The rotor magnetic ring 8 is connected to the stator 1 with an air gap. The rotating screw 6 is inserted into the magnetic ring support 9;

[0073] The beneficial effects of the above optional embodiment are as follows: The threaded connection between the rotating screw 6 and the moving rod 71 realizes a structure similar to a lead screw and nut. Through the cooperation between the rotor and the stator 1, the rotation of the rotating screw 6 is driven to drive the linear movement of the moving rod 71, and the linear movement of the valve core 7 is driven, so as to realize the reliable linear movement of the valve core 7 relative to the housing, and indirectly realize the reliable switching of each flow channel.

[0074] Optionally, as Figures 1 to 7As shown, the rotating screw 6 includes a retaining ring portion 63, a connecting rod portion 61, and a screw portion 64. One side of the retaining ring portion 63 is connected to the connecting rod portion 61, the connecting rod portion 61 is inserted into the rotor, the other side of the retaining ring portion 63 is connected to the screw portion 64, and the screw portion 64 is threadedly connected to the moving rod 71.

[0075] In the above optional embodiment, it should be noted that the magnetic ring support 9 includes a connecting rod 91, a support plate 92, and a connecting block 93. One end of the connecting rod 91 is provided with the support plate 92, the other end of the connecting rod 91 is provided with the connecting block 93, and the support plate 92 is disposed within the rotor magnetic ring 8;

[0076] The rotating screw 6 further includes a clamping block portion 62 and a shaft portion 65. A shaft portion 65 is provided between the connecting rod portion 61 and the retaining ring portion 63, and a clamping block portion 62 is provided on the side wall of the connecting rod portion 61, and the clamping block portion 62 is clamped with the connecting block 93;

[0077] The beneficial effect of the above optional embodiment is that through the arrangement of the connecting rod portion 61 and the screw portion 64, a reliable connection between the rotating screw 6 and the rotor is achieved, and at the same time, a reliable transmission of the rotating screw 6 driving the moving rod 71 is achieved.

[0078] Optionally, as Figures 1 to 7 shown, it further includes a motor base 4. The stator 1 is interconnected with the housing 2 through the motor base 4, and one end of the rotating screw 6 passes through the motor base 4 and is connected to the rotor.

[0079] Optionally, as Figures 2 to 7 shown, it further includes a bearing 10. A bearing 10 is provided between the rotating screw 6 and the motor base 4.

[0080] The motor base 4 includes a housing cover 41 and a connecting shaft sleeve 43. One side of the housing cover 41 is connected to the housing 2, and the other side of the housing cover 41 is connected to the connecting shaft sleeve 43 and the stator 1;

[0081] The connecting shaft sleeve 43 is inserted into the rotor, the rotating screw 6 passes through the housing cover 41 and the connecting shaft sleeve 43 and is connected to the rotor, and the bearing 10 is provided between the connecting shaft sleeve 43 and the rotating screw 6.

[0082] In the above optional embodiment, it should be noted that the motor base 4 further includes a first connecting seat 42 and a second connecting seat 44. A first connecting seat 42 is provided on the side of the housing cover 41 facing away from the housing 2, a second connecting seat 44 is provided on the side of the first connecting seat 42 facing away from the housing cover 41, the connecting shaft sleeve 43 is provided on the side of the second connecting seat 44 facing away from the first connecting seat 42, and the shaft portion 65 is inserted on the bearing 10; the stator 1 abuts against the first connecting seat 42 and the stator 1 is sleeved on the second connecting seat 44.

[0083] The beneficial effects of the above optional embodiments are as follows: Through the setting of the connecting bushing 43 and the setting of the rotor, the rotation of the screw rod 6 is fixed at two points, thereby ensuring the smooth rotation of the screw rod 6.

[0084] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed by the present invention should be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. A multi-way water valve, characterized in that: It comprises a driving device, a valve core (7) and a housing (2), wherein the valve core (7) is slidably connected to the inner side wall of the housing (2), and the driving device is used to drive the valve core (7) to slide; The side wall of the valve core (7) is provided with an external flow groove (77), the valve core (7) is provided with an internal flow hole (75), and the side wall of the housing (2) is provided with at least three water holes at intervals; the external flow groove (77) and the internal flow hole (75) are not connected to each other; One of the inner flow hole (75) and the outer flow groove (77) is connected to two of the at least three water holes, and the other of the inner flow hole (75) and the outer flow groove (77) is connected to the remaining water holes.

2. The multi-way water valve according to claim 1, characterized in that: The valve core (7) comprises a moving rod (71) and a sliding cylinder. The sliding cylinder is slidably connected to the inner wall of the outer shell (2). The outer wall of the sliding cylinder is provided with the outer flow groove (77). The inner flow hole (75) is opened in the sliding cylinder. The sliding cylinder is connected to the driving device via the moving rod (71).

3. The multi-way water valve according to claim 2, characterized in that: The sliding cylinder comprises a sleeve (72) and a sliding baffle (76), one sliding baffle (76) being provided at each end of the sleeve (72), the two sliding baffles (76) being slidably connected to the inner side wall of the outer shell (2), the sleeve (72) and / or the sliding baffle (76) being connected to the driving device via the moving rod (71), and the two sliding baffles (76) and the sleeve (72) being enclosed to form the outer flow groove (77).

4. The multi-way water valve according to claim 3, characterized in that: The valve core (7) further comprises a sealing ring (73), and the sealing ring (73) is arranged between each sliding baffle (76) and the inner side wall of the housing (2).

5. The multi-way water valve according to claim 2, characterized in that: The driving device comprises a stator (1), a rotor and a rotating screw (6); the rotor is arranged in the stator (1); one end of the rotating screw (6) is connected to the rotor; the other end of the rotating screw (6) is threadedly connected to the moving rod (71); and the stator (1) and the housing (2) are connected to each other.

6. The multi-way water valve according to claim 5, characterized in that: The rotating screw (6) comprises a retaining ring portion (63), a connecting rod portion (61) and a screw portion (64); one side of the retaining ring portion (63) is connected to the connecting rod portion (61); the connecting rod portion (61) is inserted into the rotor; the other side of the retaining ring portion (63) is connected to the screw portion (64); and the screw portion (64) is threadedly connected to the moving rod (71).

7. The multi-way water valve according to claim 5, characterized in that: It also comprises a motor base (4), the stator (1) and the housing (2) being connected to each other via the motor base (4), and one end of the rotating screw (6) passing through the motor base (4) to be connected to the rotor.

8. The multi-way water valve according to claim 2, characterized in that: The valve core (7) further comprises a connecting piece (74), and the moving rod (71) is connected to the sliding cylinder via the connecting piece (74).

9. The multi-way water valve according to claim 7, characterized in that: It also includes a bearing (10), wherein the bearing (10) is arranged between the rotating screw (6) and the motor base (4).

10. The multi-way water valve according to claim 9, characterized in that: The motor base (4) comprises a shell cover (41) and a connecting sleeve (43); one side of the shell cover (41) is connected to the outer shell (2), and the other side of the shell cover (41) is connected to the connecting sleeve (43) and the stator (1); The connecting sleeve (43) is inserted into the rotor, the rotating screw (6) passes through the shell cover (41) and the connecting sleeve (43) to be connected to the rotor, and the bearing (10) is arranged between the connecting sleeve (43) and the rotating screw (6).

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