Reversing valve and water purification system

Abstract

The present invention discloses a reversing valve and a water purification system, wherein the reversing valve comprises: a valve body, a valve cavity is formed therein, and the valve body is provided with a water inlet, a first water outlet and a second water outlet; a first valve component, which is at least partially arranged in the valve cavity; a second valve component, which is at least partially arranged in the valve cavity; wherein: the first valve component cooperates with the second valve component to define a first flow channel for connecting the first water outlet with the water inlet and a second flow channel for connecting the second water outlet with the water inlet; the first valve component can rotate and has a rotation stroke, and the first valve component rotates within the rotation stroke to change the size of the sum of the flow cross-sections of the first flow channel and the second flow channel; the second valve component can move and has a movement stroke, and the second valve component moves within the movement stroke to change the size of the respective flow cross-sections of the first flow channel and the second flow channel.

Description

Technical Field

[0001] The present invention relates to the technical field of water purification, and in particular to a reversing valve and a water purification system. Background Art

[0002] In the prior art, the reversing valve can only switch the flow direction of the fluid or cut off the fluid. For example, by moving or rotating the valve core of the reversing valve, the fluid can only be switched from one of the outlets to another outlet to flow out, or all the outlets of the fluid can be cut off. The reversing valve does not have the ability to distribute or adjust the flow at different outlets, and does not have the ability to adjust the total output flow. When it is required to adjust the fluid flow distribution and the total output flow, in the prior art, it can only be achieved by cooperating the reversing valve with other flow valves for controlling the flow, which is bound to increase the number of valve components, thereby increasing the cost of the fluid system and the difficulty of regulating the valve components, and is also not conducive to the intensive requirements of fluid system design. Summary of the invention

[0003] In view of the above-mentioned technical problems existing in the prior art, an embodiment of the present invention provides a reversing valve and a water purification system.

[0004] In order to solve the above technical problems, the technical solution adopted in the embodiments of the present invention is:

[0005] A reversing valve, comprising:

[0006] A valve body, a valve cavity is formed therein, and the valve body has a water inlet, a first water outlet and a second water outlet;

[0007] a first valve member at least partially disposed in the valve cavity;

[0008] A second valve member is at least partially disposed in the valve cavity; wherein:

[0009] The first valve component cooperates with the second valve component to define a first flow channel for connecting the first water outlet with the water inlet and a second flow channel for connecting the second water outlet with the water inlet;

[0010] The first valve member is rotatable and has a rotation stroke, and the first valve member is used to change the size of the sum of the flow cross sections of the first flow channel and the second flow channel by rotating within the rotation stroke;

[0011] The second valve member is movable and has a movement stroke. The second valve member is used to change the sizes of the respective flow cross sections of the first flow channel and the second flow channel by moving within the movement stroke.

[0012] Preferably,

[0013] The second valve member moves in a first moving direction so that a flow cross section of the first flow channel is reduced and a flow cross section of the second flow channel is increased;

[0014] The second valve member increases the flow cross section of the first flow channel and reduces the flow cross section of the second flow channel by moving in a second movement direction opposite to the first movement direction.

[0015] Preferably,

[0016] When the second valve member is at the first limit position of its movement stroke, the flow cross section of the first flow channel is reduced to 0, and the flow cross section of the second flow channel is increased to the maximum;

[0017] When the second valve member is at the second limit position of its movement stroke, the flow cross section of the first flow channel increases to a maximum, and the flow cross section of the second flow channel decreases to zero.

[0018] Preferably, when the second valve member moves, a change in a flow cross section of the first flow channel is made equal to a change in a flow cross section of the second flow channel.

[0019] Preferably, the portion of the first valve component located in the valve cavity is formed as a valve sleeve, and the portion of the second valve component located in the valve cavity is formed as a valve stem, and the valve stem extends into the inner hole of the valve sleeve; wherein:

[0020] A flow guide cavity is formed in the valve stem, and the first flow channel and the second flow channel are both connected to the water inlet via the flow guide cavity;

[0021] The first flow channel includes a first valve stem hole formed on the valve stem and a first valve sleeve hole formed on the valve sleeve; the first valve stem hole and the first valve sleeve hole define a flow cross section of the first flow channel based on an overlapping area.

[0022] The second flow channel includes a second valve stem hole formed on the valve stem and a second valve sleeve hole formed on the valve sleeve; the second valve stem hole and the second valve sleeve hole define a flow cross section of the second flow channel based on an overlapping area.

[0023] Preferably,

[0024] The first valve stem hole and the second valve stem hole both radially penetrate the flow guide cavity and the outer periphery of the valve stem;

[0025] The first valve sleeve hole and the second valve sleeve hole both radially penetrate the inner hole of the valve sleeve and the outer periphery of the valve sleeve.

[0026] Preferably, the first valve sleeve hole and the second valve sleeve hole both include the same number of multiple holes; the multiple first valve sleeve holes and the multiple second valve sleeve holes are circumferentially arranged, and the cross-sections of the multiple circumferentially arranged first valve sleeve holes are different, and the cross-sections of the multiple circumferentially arranged second valve sleeve holes are different; wherein:

[0027] By rotating the valve sleeve, the first valve stem hole is synchronously switched to be opposite to a different first valve sleeve hole and the second valve stem hole is synchronously switched to be opposite to a different second valve sleeve hole, so as to change the size of the sum of the flow cross-sections of the first flow channel and the second flow channel;

[0028] The flow cross section of the first flow passage defined between the first valve stem hole and the first valve sleeve hole and the flow cross section of the second flow passage defined between the second valve stem hole and the second valve sleeve hole are changed by axially moving the valve stem.

[0029] Preferably, the first valve stem hole and the second valve stem hole both include the same number of multiple holes; the multiple first valve stem holes and the multiple second valve stem holes are circumferentially arranged, and the cross-sections of the multiple circumferentially arranged first valve stem holes are different, and the cross-sections of the multiple circumferentially arranged second valve stem holes are different; wherein:

[0030] The first valve sleeve hole is synchronously switched to be opposite to different first valve stem holes and the second valve sleeve hole is synchronously switched to be opposite to different second valve stem holes by rotating the valve sleeve, so as to change the size of the sum of the flow cross sections of the first flow channel and the second flow channel;

[0031] The flow cross section of the first flow passage defined between the first valve stem hole and the first valve sleeve hole and the flow cross section of the second flow passage defined between the second valve stem hole and the second valve sleeve hole are changed by axially moving the valve stem.

[0032] Preferably, the cross-sectional sizes of the plurality of first valve sleeve holes and the plurality of second valve sleeve holes are sequentially changed in the circumferential arrangement.

[0033] Preferably, the sizes of the first valve sleeve hole and the second valve sleeve hole in the circumferential direction are smaller than those in the axial direction.

[0034] Preferably, the cross-sections of the first valve sleeve hole and the second valve sleeve hole are bead-shaped or linear groove-shaped.

[0035] Preferably, the guide cavity extends axially from the end surface of the insertion end of the valve stem; wherein:

[0036] The valve sleeve is formed with a third valve sleeve hole, and the third valve sleeve hole radially passes through the inner hole and outer periphery of the valve sleeve, wherein:

[0037] The water inlet is communicated with the flow guide cavity via the third valve sleeve hole and the inner hole of the valve sleeve.

[0038] Preferably, a cross section of the third valve sleeve hole is larger than a cross section of the first valve sleeve hole and a cross section of the second valve sleeve hole.

[0039] Preferably, the inner hole of the valve sleeve is a blind hole, and the third valve sleeve hole penetrates to the hole wall of the inner hole of the valve sleeve between the blind end of the inner hole of the valve sleeve and the extending end of the valve stem.

[0040] Preferably, the first water outlet and the first valve sleeve hole have the same axial position; the second water outlet and the second valve sleeve hole have the same axial position; wherein:

[0041] A first annular groove communicating with the first valve sleeve hole and the first water outlet and a second annular groove communicating with the second valve sleeve hole and the second water outlet are defined between the valve body and the valve sleeve.

[0042] Preferably, the first annular groove and the second annular groove are both formed on the outer circumference of the valve sleeve.

[0043] Preferably, the first valve sleeve hole penetrates to the groove bottom of the first annular groove, and the second valve sleeve hole penetrates to the groove bottom of the second annular groove.

[0044] Preferably, sealing rings are installed between the valve body and the valve sleeve on both sides of the first annular groove and between the valve body and the valve sleeve on both sides of the second annular groove.

[0045] Preferably, the water inlet and the third valve sleeve hole have the same axial position; wherein:

[0046] The valve body and the valve body define a third annular groove communicating with the third valve sleeve hole and the water inlet.

[0047] Preferably, the third annular groove is formed on the outer circumference of the valve sleeve.

[0048] Preferably, the third valve sleeve hole passes through to the bottom of the third annular groove.

[0049] Preferably, sealing rings are installed between the valve bodies on both sides of the third annular groove.

[0050] Preferably, the water inlet, the first water outlet and the second water outlet are arranged at intervals in the axial direction; and the water inlet, the first water outlet and the second water outlet are arranged at intervals in the circumferential direction.

[0051] Preferably,

[0052] The first valve component further includes a first driven portion connected to the valve sleeve; the second valve component further includes a second driven portion connected to the valve stem; wherein:

[0053] The reversing valve further comprises a first driving mechanism for driving the first driven part to drive the valve sleeve to rotate, and a second driving mechanism for driving the second driven part to drive the valve stem to move axially.

[0054] Preferably,

[0055] The first driven portion extends out of a first end of the valve body, and the first driving mechanism is connected to the extended end of the first driven portion;

[0056] The second driven portion extends out of the second end of the valve sleeve, and the second driving mechanism is used to drive the extended end of the second driven portion.

[0057] Preferably, a detachable partition component is provided at the second end of the valve body for sealing the second end of the valve body.

[0058] Preferably,

[0059] The first driving mechanism includes a motor connected to the protruding end of the first driven part or a screwing part connected to the protruding end of the first driven part.

[0060] Preferably, the second driving mechanism comprises:

[0061] a rotating component, which is sleeved on the protruding end of the second driven part and forms a spiral transmission with the protruding end of the second driven part;

[0062] The motor is used for driving the rotating component to rotate so as to drive the second driven component to move axially.

[0063] Preferably, a first bevel gear is formed on the rotating component; a second bevel gear is formed on the output shaft of the motor, and the second bevel gear is meshed with the first bevel gear; wherein:

[0064] The number of teeth of the first bevel gear is greater than the number of teeth of the second bevel gear.

[0065] Preferably, a shell is formed outside the rotating component; a guide hole coaxial with the second driven part is formed on the shell; wherein:

[0066] The extended end portion of the second driven part extends into the guide hole, and a stopper is formed at the extended end of the second driven part, and the stopper is used to limit the rotation of the second driven part.

[0067] Preferably, at least the valve sleeve in the first valve component is made of ceramic material; and at least the valve stem in the second valve component is made of ceramic material.

[0068] Preferably, the first driven portion is formed with a step surface, and a radial dimension of the step surface is smaller than an end surface of the valve cavity opposite to the step surface.

[0069] Preferably, when the first driving mechanism is a screwing part, a shift mechanism is provided between the valve body and the first driven part, and the shift mechanism is used to enable a human hand to obtain a shift feeling when the screwing part is rotated.

[0070] The invention also discloses a water purification system, comprising the above-mentioned reversing valve.

[0071] Compared with the prior art, the reversing valve and water purification system disclosed in the present invention have the following beneficial effects:

[0072] The reversing valve of the present invention can divert water inside the valve body, and can adjust the total water output and the flow distribution ratio of the diverted water by controlling the rotation of the first valve component and the movement of the second valve component. Therefore, only the reversing valve provided by the present invention can realize the functions that require the cooperation of valve components such as the reversing valve and the flow valve in the prior art. This is bound to reduce the number of valve components in the fluid system, reduce the difficulty of controlling the valve components to a certain extent, and is conducive to the intensive design of the fluid system.

[0073] It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention.

[0074] This summary of various implementations or examples of the technology described in this disclosure is not a comprehensive disclosure of the entire scope or all features of the disclosed technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0075] In the drawings, which are not necessarily drawn to scale, the same reference numerals may describe similar parts in different views. The same reference numerals with letter suffixes or different letter suffixes may represent different instances of similar parts. The accompanying drawings generally illustrate various embodiments by way of example and not limitation, and together with the specification and claims, are used to illustrate the embodiments of the invention. When appropriate, the same reference numerals are used throughout the drawings to refer to the same or similar parts. Such embodiments are illustrative and are not intended to be exhaustive or exclusive embodiments of the present apparatus or method.

[0076] Figure 1 A view of the use state of the reversing valve provided in an embodiment of the present invention (the first flow channel is fully open, the second flow channel is closed, and the first driving mechanism is a motor).

[0077] Figure 2 A view of the use state of the reversing valve provided in an embodiment of the present invention (the first flow channel is fully open, the second flow channel is closed, and the first driving mechanism is a screwing part).

[0078] Figure 3 A view of the use state of the reversing valve provided by an embodiment of the present invention (the first flow channel is closed and the second flow channel is fully opened).

[0079] Figure 4 A view of the use state of the reversing valve provided in an embodiment of the present invention (the flow cross section of the first flow channel is S1, and the flow cross section of the second flow channel is S2).

[0080] Figure 5 for Figure 4 AA section view.

[0081] Figure 6 for Figure 4 CC cross-sectional view.

[0082] Figure 7 for Figure 4 A-direction view (the cross section of the valve stem hole is in the shape of a wire groove, and the cross section of the valve sleeve hole is in the shape of a wire groove).

[0083] Figure 8 for Figure 4 A-direction view (the cross section of the valve stem hole is wire groove shaped, and the cross section of the valve sleeve hole is beaded shaped).

[0084] Reference numerals:

[0085] 10-first valve member; 11-valve sleeve; 111-first annular groove; 112-second annular groove; 113-third annular groove; 114-third valve sleeve hole; 12-first driven part; 121-step surface; 20-second valve member; 21-valve stem; 211-flow guide cavity; 22-second driven part; 221-stopper; 30-valve body; 31-first water outlet; 32-second water outlet; 33-water inlet; 41-first flow channel; 411-first valve Rod hole; 412-first valve sleeve hole; 42-second flow channel; 421-second valve stem hole; 422-second valve sleeve hole; 51-first drive mechanism; 511-screwing part; 512-shift mechanism; 513-motor; 52-second drive mechanism; 521-first bevel gear; 522-second bevel gear; 523-motor; 524-rotating component; 525-spring; 526-stop cover; 527-air hole; 60-sealing ring; 70-dividing component. DETAILED DESCRIPTION

[0086] In order to make the purpose, technical solution and advantages of the embodiment of the present invention clearer, the technical solution of the embodiment of the present invention will be clearly and completely described below in conjunction with the drawings of the embodiment of the present invention. Obviously, the described embodiment is a part of the embodiment of the present invention, not all of the embodiments. Based on the described embodiment of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0087] Unless otherwise defined, the technical terms or scientific terms used in the present invention should be understood by people with ordinary skills in the field to which the present invention belongs. The words "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0088] In order to keep the following description of the embodiments of the present invention clear and concise, detailed descriptions of well-known functions and well-known components are omitted.

[0089] like Figures 1 to 8 As shown, an embodiment of the present invention discloses a reversing valve, which can be used in a water purification system. The reversing valve comprises: a valve body 30 , a first valve component 10 and a second valve component 20 .

[0090] In the present invention, if Figure 4 As shown, a valve cavity is formed in the valve body 30, and a water inlet 33, a first water outlet 31 and a second water outlet 32 ​​are also formed on the valve body 30. The water inlet 33 is used to allow water with a certain pressure to enter the interior of the valve body 30. For example, the water inlet 33 is connected to a pumping device, and the pumping device is used to supply water with a certain pressure into the valve body 30 through the water inlet 33; the first water outlet 31 and the second water outlet 32 ​​are used to allow the water entering the valve body 30 to flow out, that is, water flows into the valve body 30 through the water inlet 33 and flows out through the two water outlets.

[0091] Part of the first valve component 10 is located in the valve cavity, and part of the second valve component 20 is located in the valve sleeve 11; the part of the first valve component 10 located in the valve cavity and the part of the second valve component 20 located in the valve cavity jointly define two flow channels, namely, the first flow channel 41 and the second flow channel 42. The first flow channel 41 is used to connect the first water outlet 31 and the water inlet 33, and the second flow channel 42 is used to connect the second water outlet 32 ​​and the water inlet 33. This allows water entering the valve body 30 through the water inlet 33 to flow out from the first water outlet 31 and the second water outlet 32 ​​respectively through the first flow channel 41 and the second flow channel 42. By defining two flow channels in the valve body 30, water is diverted in the reversing valve. Therefore, the reversing valve provided by the present invention has a diversion function, while the reversing valve in the prior art does not have this function.

[0092] It should be noted that in fluid mechanics, the flow cross section refers to the cross section perpendicular to the flow direction of the fluid. For example, when the fluid flows in a pipe, the flow cross section refers to the cross section of the inner hole at any position of the pipe. In the following text of the present invention, the flow cross section specifically refers to the smallest cross section among all cross sections perpendicular to the flow direction of the fluid. The smallest cross section is used to limit the flow rate of the fluid (water) flowing through the flow channel. The larger the flow cross section, the greater the flow rate of the fluid flowing through the flow channel.

[0093] In the present invention, the first valve component 10 is also configured to be rotatable, and the rotation of the first valve component 10 and the flow cross section for limiting the flow rate of water are configured in the following relationship:

[0094] The first valve component 10 changes the sum of the flow cross-sections of the first flow channel 41 and the second flow channel 42 by rotating within a rotational stroke. Specifically, when the first valve component 10 rotates in a first rotational direction, the sum of the flow cross-sections of the two flow channels decreases as the first valve component 10 rotates, and when the first valve component 10 rotates in a second rotational direction opposite to the first rotational direction, the sum of the flow cross-sections increases as the first valve component 10 rotates.

[0095] By configuring the first valve component 10 and the flow cross section in the above relationship, the first valve component 10 has the following functions:

[0096] The sum of the flow rates of water flowing out of the first water outlet 31 and the second water outlet 32 ​​can be adjusted by rotating the first valve component 10, that is, the total output (outflow) of water can be adjusted by rotating the first valve component 10. Specifically, the sum of the flow cross sections is reduced by rotating the first valve component 10 in the first rotation direction, and the sum of the flow cross sections is reduced, so that the sum of the flow rates of water flowing out of the first water outlet 31 and the sum of the flow rates of water flowing out of the second water outlet 32 ​​is reduced; the sum of the flow cross sections is increased by rotating the second valve component 20 in the second rotation direction, and the sum of the flow cross sections is increased, so that the sum of the flow rates of water flowing out of the first water outlet 31 and the sum of the flow rates of water flowing out of the second water outlet 32 ​​is increased.

[0097] In the present invention, the second valve member 20 is also configured to be movable, and the movement of the second valve member 20 and the flow cross section for limiting the flow rate of water are configured to have the following relationship:

[0098] By moving the second valve member 20 within the movement stroke, the flow cross-sections of the first flow channel 41 and the second flow channel 42 are changed. Specifically, Figure 4 As shown, when the second valve component 20 moves in a first moving direction, the flow cross-section S1 of the first flow channel 41 decreases, while the flow cross-section S2 of the second flow channel 42 increases; when the second valve component 20 moves in a second moving direction opposite to the first moving direction, the flow cross-section S1 of the first flow channel 41 increases, while the flow cross-section S2 of the second flow channel 42 decreases.

[0099] By configuring the second valve component 20 and the flow cross section in the above relationship, the second valve component 20 has the following functions:

[0100] By moving the second valve component 20 , the ratio between the flow rate of water flowing out of the first water outlet 31 and the flow rate of water flowing out of the second water outlet 32 ​​can be adjusted. That is, by moving the second valve component 20 , the flow distribution ratio of the diverted water can be adjusted. Specifically, by moving the second valve component 20 in the first moving direction, the flow cross-section of the first flow channel 41 is reduced, and the flow cross-section of the second flow channel 42 is increased, which reduces the flow rate of water flowing through the first flow channel 41, and accordingly, the flow rate of water flowing out of the first water outlet 31 is reduced, and at the same time, the flow rate of water flowing through the second flow channel 42 is increased, and accordingly, the flow rate of water flowing out of the second water outlet 32 ​​is increased; by moving the second valve component 20 in the second moving direction, the flow cross-section of the first flow channel 41 is increased, and the flow cross-section of the second flow channel 42 is reduced, which increases the flow rate of water flowing through the first flow channel 41, and accordingly, the flow rate of water flowing out of the first water outlet 31 is increased, and at the same time, the flow rate of water flowing through the second flow channel 42 is reduced, and accordingly, the flow rate of water flowing out of the second water outlet 32 ​​is reduced.

[0101] The advantages of the reversing valve provided by the present invention are:

[0102] The reversing valve of the present invention can divert water inside the valve body 30, and by controlling the rotation of the first valve component 10 and the movement of the second valve component 20, the total water output and the flow distribution ratio of the diverted water can be adjusted. Therefore, only the reversing valve provided by the present invention can realize the functions that require the cooperation of valve components such as the reversing valve and the flow valve in the prior art. This is bound to reduce the number of valve components in the fluid system, reduce the difficulty of controlling the valve components to a certain extent, and is conducive to the intensive design of the fluid system.

[0103] In some preferred embodiments, the moving position of the second valve component 20 and the flow cross section of the flow channel are configured to have the following relationship:

[0104] like Figure 1 and Figure 2 As shown, when the second valve component 20 moves in the first moving direction and moves to the first limit position, the flow cross section of the first flow channel 41 is reduced to 0, and the flow cross section of the second flow channel 42 is increased to the maximum; Figure 3 As shown, when the second valve component 20 moves in the second moving direction and moves to the second extreme position, the flow cross section of the first flow channel 41 increases to the maximum, and the flow cross section of the second flow channel 42 decreases to 0. The purpose of such configuration is: by moving the second valve component 20 to the first extreme position, the first flow channel 41 is completely closed, and the second flow channel 42 is opened to the maximum, thereby preventing water from flowing out of the first water outlet 31 through the first flow channel 41, and allowing all water to flow out of the second water outlet 32 ​​through the second flow channel 42; by moving the second valve component 20 to the second extreme position, the first flow channel 41 is opened to the maximum, and the second flow channel 42 is completely closed, thereby preventing water from flowing out of the second water outlet 32 ​​through the second flow channel 42, and allowing all water to flow out of the first water outlet 31 through the first flow channel 41. In this way, the reversing valve provided by the present invention not only has the function of adjusting the total output of water and adjusting the flow distribution ratio of the water flow, but also has the same function of switching the flow direction of water as the reversing valve in the prior art.

[0105] In some preferred embodiments, the movement process of the second valve component 20 and the change in the flow cross-section through the two flow channels are made to have the following relationship:

[0106] When the second valve component 20 moves, the change in the flow cross section of the first flow channel 41 is equal to the change in the flow cross section of the second flow channel 42. Specifically, when the second valve component 20 moves in the first moving direction, the decrease in the flow cross section of the first flow channel 41 is equal to the increase in the flow cross section of the second flow channel 42; and when the second valve component 20 moves in the second moving direction, the increase in the flow cross section of the first flow channel 41 is equal to the decrease in the flow cross section of the second flow channel 42. It can be seen that when the second valve component 20 moves in the first moving direction, the decrease in the flow rate of water flowing through the first flow channel 41 is equal to the increase in the flow rate of water flowing through the second flow channel 42; and when the second valve component 20 moves in the second moving direction, the increase in the flow rate of water flowing through the first flow channel 41 is equal to the decrease in the flow rate of water flowing through the second flow channel 42. In this way, when the second valve component 20 is used to change the flow distribution ratio of the water flow by moving, the sum of the flow rates of water flowing through the two flow channels remains unchanged, that is, the total output of water remains unchanged.

[0107] Configuring the second valve component 20 and the variation of the flow cross-sections of the two flow channels in the above relationship will enable the reversing valve provided by the present invention to have the following advantages:

[0108] When the flow distribution ratio of water flowing out of the two water outlets is changed by moving the second valve component 20, the total output of water flowing out of the two water outlets remains unchanged, which makes the second valve component 20 and the first valve component 10 independent of each other in regulating the water flow and do not affect each other.

[0109] An embodiment of a reversing valve capable of defining the above-mentioned two flow channels is introduced below.

[0110] like Figures 1 to 4 As shown, in this embodiment, the first valve component 10 includes a valve sleeve 11 located in the valve cavity and a first driven portion 12 extending out of the valve body 30; the second valve component 20 includes a valve stem 21 located in the valve cavity and a second driven portion 22 extending out of the valve body 30. The first driven portion 12 is connected to a first driving mechanism 51 located outside the valve body 30, and the first driving mechanism 51 is used to drive the first driven portion 12 to rotate and then drive the valve sleeve 11 to rotate; the second driven portion 22 is connected to a second driving mechanism 52 located outside the valve body 30, and the second driving mechanism 52 is used to drive the second driven portion 22 to move axially to drive the valve stem 21 to move axially.

[0111] The valve stem 21 extends into the valve sleeve 11 (or the valve sleeve 11 is sleeved outside the valve stem 21); a guide cavity 211 is formed in the valve stem 21, and the guide cavity 211 is connected to the water inlet 33 of the valve body 30, so that water enters the guide cavity 211 after passing through the water inlet 33, and the first flow channel 41 and the second flow channel 42 are connected to the guide cavity 211, so that water flows through the guide cavity 211 and flows out from the first flow channel 41 and the second flow channel 42 respectively.

[0112] In this embodiment, the first flow channel 41 includes a first valve stem hole 411 formed on the valve stem 21 and a first valve sleeve hole 412 formed on the valve sleeve 11; the first valve stem hole 411 and the first valve sleeve hole 412 define the flow cross section of the first flow channel 41 based on the overlapping area; the second flow channel 42 includes a second valve stem hole 421 formed on the valve stem 21 and a second valve sleeve hole 422 formed on the valve sleeve 11; the second valve stem hole 421 and the second valve sleeve hole 422 define the flow cross section of the second flow channel 42 based on the overlapping area. In this way, the purpose of the rotation of the valve sleeve 11 and the movement of the valve stem 21 is to change the size of the flow cross section of the two flow channels by changing the overlapping area between the valve stem 21 hole and the valve sleeve 11 hole.

[0113] In terms of limiting the flow cross section based on the overlapping area, the hole of the valve stem 21 and the hole of the valve sleeve 11 have the following two matching modes:

[0114] The first cooperation method:

[0115] like Figure 7 and Figure 8 As shown, in the present matching mode, the first valve sleeve hole 412 and the second valve sleeve hole 422 each include a plurality of the same number; the first valve stem hole 411 and the second valve stem hole 421 each include only one; the first valve sleeve hole 412 and the second valve sleeve hole 422 are both arranged circumferentially, and the cross-sections of the first valve sleeve hole 412 and the second valve sleeve hole 422 gradually decrease or increase synchronously in the same circumferential arrangement direction.

[0116] in this way:

[0117] By rotating the valve sleeve 11, the first valve stem hole 411 can be synchronously switched to correspond to a different first valve sleeve hole 412, and the second valve stem hole 421 can be synchronously switched to correspond to a different second valve sleeve hole 422, so that the flow cross-section of the first flow channel 41 and the flow cross-section of the second flow channel 42 are synchronously increased or synchronously decreased, and the total water output can be adjusted by rotating the valve sleeve 11.

[0118] like Figure 7 and Figure 8As shown, when the valve sleeve 11 is kept in the rotated angle state so that the hole of the valve stem 21 corresponds to a hole of the valve sleeve 11, the flow cross section of the first flow channel 41 defined between the first valve stem hole 411 and the corresponding first valve sleeve hole 412 and the flow cross section of the second flow channel 42 defined between the second valve stem hole 421 and the corresponding second valve sleeve hole 422 can be changed by axially moving the valve stem 21. Specifically, when the valve stem 21 moves in the first direction, the overlapping area formed between the first valve stem hole 411 and the corresponding first valve sleeve hole 412 is reduced, thereby reducing the flow cross section of the first flow channel 41, thereby reducing the flow rate of water flowing through the first flow channel 41; and at the same time, the overlapping area formed between the second valve stem hole 421 and the corresponding second valve sleeve hole 422 is increased, thereby increasing the flow cross section of the second flow channel 42, thereby increasing the flow rate of water flowing through the second flow channel 42. When the valve stem 21 moves in the second moving direction, the overlapping area formed between the first valve stem hole 411 and the corresponding first valve sleeve hole 412 increases, thereby increasing the flow cross section of the first flow channel 41, thereby increasing the flow rate of water flowing through the first flow channel 41; and at the same time, the overlapping area formed between the second valve stem hole 421 and the corresponding second valve sleeve hole 422 decreases, thereby decreasing the flow cross section of the second flow channel 42, thereby decreasing the flow rate of water flowing through the second flow channel 42. Therefore, the flow distribution ratio of the water flow can be adjusted by moving the valve stem 21.

[0119] The second matching method (the structure of this matching method is not shown in the attached drawings):

[0120] In this matching mode, the first valve stem hole 411 and the second valve stem hole 421 each include multiple, and the number is the same; the first valve sleeve hole 412 and the second valve sleeve hole 422 each have only one; the first valve stem hole 411 and the second valve stem hole 421 are both arranged circumferentially, and the cross-sections of the first valve stem hole 411 and the second valve stem hole 421 gradually decrease or increase synchronously in the same circumferential arrangement direction.

[0121] in this way:

[0122] By rotating the valve sleeve 11, the first valve sleeve hole 412 can be synchronously switched to correspond to different first valve stem holes 411 and the second valve sleeve hole 422 can be synchronously switched to correspond to different second valve stem holes 421, so that the flow cross-section of the first flow channel 41 and the flow cross-section of the second flow channel 42 are synchronously increased or synchronously decreased, and the total water output can be adjusted by rotating the valve sleeve 11.

[0123] When the valve sleeve 11 is kept in the rotated angle state so that the hole of the valve sleeve 11 corresponds to a hole of the valve stem 21, the flow cross section of the first flow channel 41 defined between the first valve sleeve hole 412 and the corresponding first valve stem hole 411 and the flow cross section of the second flow channel 42 defined between the second valve sleeve hole 422 and the corresponding second valve stem hole 421 can be changed by axially moving the valve stem 21. Specifically, when the valve stem 21 moves in the first direction, the overlapping area formed between the first valve sleeve hole 412 and the corresponding first valve stem hole 411 decreases, thereby reducing the flow cross section of the first flow channel 41, thereby reducing the flow rate of water flowing through the first flow channel 41; and at the same time, the overlapping area formed between the second valve sleeve hole 422 and the corresponding second valve stem hole 421 increases, thereby increasing the flow cross section of the second flow channel 42, thereby increasing the flow rate of water flowing through the second flow channel 42. When the valve stem 21 moves in the second moving direction, the overlapping area formed between the first valve sleeve hole 412 and the corresponding first valve stem hole 411 increases, thereby increasing the flow cross section of the first flow channel 41, thereby increasing the flow rate of water flowing through the first flow channel 41; and at the same time, the overlapping area formed between the second valve sleeve hole 422 and the corresponding second valve stem hole 421 decreases, thereby decreasing the flow cross section of the second flow channel 42, thereby decreasing the flow rate of water flowing through the second flow channel 42. Therefore, the flow distribution ratio of the water flow can be adjusted by moving the valve stem 21.

[0124] Although the above two matching modes of the valve stem 21 hole and the valve sleeve 11 hole can both achieve the effect of adjusting the total amount of water delivered and the flow distribution ratio of the water flow, the first matching mode has higher adjustment accuracy and lower processing and manufacturing cost.

[0125] The cross-sectional shapes of the holes of the valve stem 21 and the holes of the valve sleeve 11 can be various. Preferably, the cross-sectional shapes of the holes of the valve stem 21 and the holes of the valve sleeve 11 are arranged in a linear groove shape (or rectangular shape) or a beaded shape. For example, in the first matching mode, Figure 7 and Figure 8 As shown, the cross-section of the hole of the valve sleeve 11 is set to a linear groove shape or a bead shape, and the cross-section of the hole of the valve stem 21 is set to a linear groove shape; in the second matching mode, the cross-section of the hole of the valve stem 21 is set to a linear groove shape or a bead shape, and the cross-section of the hole of the valve sleeve 11 is set to a linear groove shape.

[0126] In some preferred schemes, in a first matching method, the circumferential size of the first valve sleeve hole 412 and the second valve sleeve hole 422 (or the width size of the hole) is smaller than the axial size (or the length size of the hole); in a second matching method, the circumferential size of the first valve stem hole 411 and the second valve stem hole 421 (or the width size of the hole) is also smaller than the axial size (or the length size of the hole). In this way, the change in the flow cross-section of the first flow channel 41 and the change in the flow cross-section of the second flow channel per unit displacement of the valve stem 21 will be very small, thereby improving the regulation accuracy of the valve stem 21 on the water flow rate.

[0127] In some preferred embodiments, in the first combination mode, such as Figure 7 and Figure 8 As shown, the circumferential size of the hole in the valve stem 21 is made larger than the circumferential size of all the holes in the valve sleeve 11, which makes the flow cross-section of the flow channel limited by an axial section of the hole in the valve sleeve 11 that falls into the hole in the valve stem 21; in the second matching mode, the circumferential size of the hole in the valve sleeve 11 is made larger than the circumferential size of all the holes in the valve stem 21, which makes the flow cross-section of the flow channel limited by an axial section of the hole in the valve stem 21 that falls into the hole in the valve sleeve 11 relative to the hole.

[0128] It should state:

[0129] In the first matching mode, the first valve sleeve hole 412 corresponding to the first valve stem hole 411 and the second valve sleeve hole 422 corresponding to the second valve stem hole 421 are completely identical in shape and size; and the two hole walls in the circumferential direction of all the first valve sleeve holes 412 and all the second valve sleeve holes 422 are parallel and opposite to each other. In this way, when the valve stem 21 is moved, the change in the flow cross section of the first flow channel 41 is equal to the change in the flow cross section of the second flow channel 42, thereby ensuring that the total amount of delivery remains unchanged when adjusting the flow distribution ratio of the water flow.

[0130] In the second matching mode, the first valve stem hole 411 corresponding to the first valve sleeve hole 412 and the second valve stem hole 421 corresponding to the second valve sleeve hole 422 are completely identical in shape and size; and the two hole walls in the circumferential direction of all the first valve stem holes 411 and all the second valve stem holes 421 are parallel to each other. In this way, when the valve stem 21 is moved, the change in the flow cross section of the first flow channel 41 is equal to the change in the flow cross section of the second flow channel 42, thereby ensuring that the total amount of delivery remains unchanged when adjusting the flow distribution ratio of the water flow.

[0131] In some preferred schemes, when the valve stem 21 moves to the first extreme position, the first valve stem hole 411 and the first valve sleeve hole 412 are completely misaligned, and the second valve stem hole 421 and the second valve sleeve hole 422 form a maximum overlapping area; when the valve stem 21 moves to the second extreme position, the first valve stem hole 411 and the first valve sleeve hole 412 form a maximum overlapping area, and the second valve stem hole 421 and the second valve sleeve hole 422 are completely misaligned, thereby realizing the function of switching flow direction.

[0132] In some preferred embodiments, Figure 5 As shown, the first valve stem hole 411 and the second valve stem hole 421 both radially penetrate to the guide cavity 211 and the outer periphery of the valve stem 21 ; the first valve sleeve hole 412 and the second valve sleeve hole 422 both radially penetrate to the inner hole of the valve sleeve 11 and the outer periphery of the valve sleeve 11 .

[0133] In some preferred schemes, the water inlet 33, the first water outlet 31, and the second water outlet 32 ​​are arranged in sequence at different positions on the circumference of the valve body 30. More preferably, the water inlet 33 and the first water outlet 31 and the first water outlet 31 and the second water outlet 32 ​​are located at different angular positions on the circumference of the valve body 30.

[0134] In some more preferred embodiments, Figure 6 As shown, combined with Figures 1 to 4 A third valve sleeve hole 114 is also provided on the valve sleeve 11, and the third valve sleeve hole 114 passes through the outer periphery and the inner hole of the valve sleeve 11, and the third valve sleeve hole 114 corresponds to the water inlet 33 in axial position, the first valve sleeve hole 412 corresponds to the first water outlet 31 in axial position, and the second valve sleeve hole 422 corresponds to the second water outlet 32 ​​in axial position.

[0135] In some more preferred solutions, the flow guiding cavity 211 axially extends from the end surface of the insertion end of the valve stem 21, the inner hole of the valve sleeve 11 is a blind hole, and the third valve sleeve hole 114 penetrates to the hole wall of the inner hole of the valve sleeve 11 between the blind end of the inner hole of the valve sleeve 11 and the insertion end of the valve stem 21. In this way, the third valve sleeve hole 114 is in communication with the flow guiding cavity 211.

[0136] In some more preferred solutions, a first annular groove 111 communicating with the first valve sleeve hole 412 and the first water outlet 31, a second annular groove 112 communicating with the second valve sleeve hole 422 and the second water outlet 32, and a third annular groove 113 communicating with the third valve sleeve hole 114 and the water inlet 33 are defined between the valve body 30 and the valve sleeve 11. The functions of the three annular grooves are as follows: when the valve sleeve 11 is rotated, the first annular groove 111 always keeps a better connection effect between the first valve sleeve hole 412 and the first water outlet 31; the second annular groove 112 always keeps a better connection effect between the second valve sleeve hole 422 and the second water outlet 32; and the third annular groove 113 always keeps a better connection effect between the water inlet 33 and the third valve sleeve hole 114.

[0137] The so-called "maintaining better connectivity" specifically means that when the valve sleeve 11 rotates, the flow cross-section of the flow channel is always limited by the overlapping area of ​​the valve sleeve 11 hole and the valve stem 21 hole, and is not limited by the water outlet and the valve sleeve 11 hole, nor by the water inlet 33 and the valve sleeve 11 hole.

[0138] There are two ways to form the three annular grooves:

[0139] The first one is that the annular groove is formed on the valve cavity wall of the valve body 30 .

[0140] The second type is that an annular groove is formed on the outer periphery of the valve sleeve 11 .

[0141] It can be understood that it is preferred that the annular groove is formed on the outer periphery of the valve sleeve 11, because it is easier to machine the annular groove on the outer periphery of the valve sleeve 11 than to machine the annular groove on the wall of the valve cavity.

[0142] In some more preferred schemes, a sealing ring 60 is arranged between the valve body 30 and the valve sleeve 11 on both sides of the first annular groove 111; a sealing ring 60 is arranged between the valve body 30 and the valve sleeve 11 on both sides of the second annular groove 112; and a sealing ring 60 is arranged between the valve body 30 and the valve sleeve 11 on both sides of the third annular groove 112.

[0143] In some preferred embodiments, the first driven portion 12 extends from a first end of the valve body 30 , and the second driven portion 22 extends from a second end of the valve body 30 .

[0144] The first driving mechanism 51 is located on one side of the first end of the valve body 30. The first driving mechanism 51 can be a motor 513, for example, a stepping motor or a servo motor. The output shaft of the motor 513 is connected to the first driven part 12 to drive the valve sleeve 11 to rotate; the first driving mechanism 51 can be a screwing part 511, and the screwing part 511 is used for manual force application.

[0145] When the first driving mechanism 51 is a screwing part 511, a shifting mechanism 512 is arranged between the valve body 30 and the first driven part 12. Specifically, the shifting mechanism 512 includes a plurality of recesses, top balls and a spring 525 circumferentially arranged on the first driven part 12. In a first matching method, the number of the recesses is the same as the number of holes in the valve sleeve 11, and the circumferential arrangement positions of the recesses correspond to the circumferential arrangement positions of the holes in the valve sleeve 11; the spring 525 is arranged in the slot of the valve body 30, and the top ball is located between the spring 525 and the first driven part 12. Under the action of the spring 525, the top ball part is embedded in the recess. When the screwing part 511 is rotated, the top ball slides from one of the recessed grooves into the other recess, so that the human hand can get a sense of gear when rotating the screwing part 511. In addition, since the recess has a certain stopping operation on the top ball, after the valve sleeve 11 is rotated and stopped, the hole of the switched valve sleeve 11 is exactly opposite to the hole of the valve stem 21.

[0146] In some preferred embodiments, the second driving mechanism 52 includes: a rotating component 524 and a motor 523. The rotating component 524 is sleeved on the protruding end of the second driven part 22 and forms a spiral transmission with the protruding end of the second driven part 22; the motor 523 is used to drive the rotating component 524 to rotate so as to drive the second driven part 22 to move axially, and the motor 523 can be preferably a stepping motor or a servo motor. Preferably, a first bevel gear 521 is formed on the rotating component 524; a second bevel gear 522 is formed on the output shaft of the motor 523, and the second bevel gear 522 is meshed with the first bevel gear 521; wherein: the number of teeth of the first bevel gear 521 is greater than the number of teeth of the second bevel gear 522. By making the number of teeth of the first bevel gear 521 greater than the number of teeth of the second bevel gear 522, the rotation speed of the rotating component 524 can be reduced, and the moving speed of the second driven part 22 and the valve stem 21 can be reduced, and the impact of the valve stem 21 due to movement can be effectively reduced.

[0147] In some more preferred embodiments, a housing is formed outside the rotating component 524; a guide hole coaxial with the second driven part 22 is formed on the housing; wherein: the extended end portion of the second driven part 22 extends into the guide hole, and a stopper 221 is formed at the extended end of the second driven part 22, and the stopper 221 is used to limit the rotation of the second driven part 22. By limiting the rotation of the second driven part 22, the valve stem 21 is further limited from rotating when moving.

[0148] In some more preferred solutions, a stop cover 526 is provided on the housing opposite to the second driven part 22, and a spring 525 is provided between the stop cover 526 and the second driven part 22. The spring 525 is used to push against the second driven part 22, which can prevent the second driven part 22 from moving due to the gap between the spiral fits and improve the accuracy of the spiral transmission. Preferably, an air hole 527 is provided on the stop cover 526 to keep the gas pressure in the housing consistent with the external pressure.

[0149] The valve sleeve 11 in the first valve component 10 can be made of a variety of materials, preferably ceramic materials, which have better corrosion resistance and wear resistance, thereby increasing the service life of the valve sleeve 11. The first valve component 10 can be made of ceramic material as a whole, that is, the valve sleeve 11 and the first driven part 12 are integrally formed of ceramic material; the first valve component 10 can also be formed by a composite process, for example, the valve stem 21 is made of ceramic material, the first driven part 12 is made of metal or non-metallic material, for example, nylon material, and the first driven part 12 and the valve sleeve 11 are formed by a composite process, for example, the first driven part 12 and the valve sleeve 11 are formed by a thermoplastic process.

[0150] The valve stem 21 in the second valve component 20 can be made of a variety of materials, preferably ceramic material, which has better corrosion resistance and wear resistance, thereby increasing the service life of the valve stem 21. The first valve component 10 can be made of ceramic material as a whole, that is, the valve stem 21 and the second driven part 22 are integrally formed of ceramic material; the second valve component 20 can also be formed by a composite process, for example, the valve stem 21 is made of ceramic material, the second driven part 22 is made of metal or non-metallic material, for example, nylon material, and the second driven part 22 and the valve stem 21 are formed by a composite process, for example, the second driven part 22 and the valve stem 21 are formed by a thermoplastic process.

[0151] In some preferred embodiments, the first driven portion 12 is formed with a step surface 121, and the radial dimension of the step surface 121 is smaller than the end surface of the valve cavity opposite to the step surface 121, which is beneficial to reduce the friction force exerted on the valve sleeve 11 during rotation and can effectively prevent the valve sleeve 11 from being stuck by the valve body 30 during rotation.

[0152] In some embodiments, a detachable partitioning component 70 is disposed at the second end of the valve body 30 to block the second end of the valve body 30. The partitioning component 70 can improve the detachability of the second valve component 20.

[0153] An embodiment of the present invention also discloses a water purification system, including the above-mentioned reversing valve, the water purification system is used to purify initial water such as tap water to obtain purified water, the reversing valve is used to divert water in the water purification system and adjust the total output amount and flow distribution ratio of the diverted water.

[0154] In addition, although exemplary embodiments have been described in the present invention, the scope includes any and all embodiments based on the present invention with equivalent elements, modifications, omissions, combinations (e.g., various embodiments intersecting schemes), adaptations or changes. The elements in the claims will be interpreted broadly based on the language adopted in the claims, and are not limited to the examples described in this specification or during the implementation of this application, and their examples will be interpreted as non-exclusive. Therefore, this specification and examples are intended to be considered as examples only, and the true scope and spirit are indicated by the following claims and the full scope of their equivalents.

[0155] The above description is intended to be illustrative rather than restrictive. For example, the above examples (or one or more of them) can be used in combination with each other. For example, a person of ordinary skill in the art can use other embodiments when reading the above description. In addition, in the above-mentioned specific embodiments, various features can be grouped together to simplify the present invention. This should not be interpreted as an intention that a disclosed feature that is not required to be protected is necessary for any claim. On the contrary, the subject matter of the present invention may be less than all the features of a specific disclosed embodiment. Thus, the following claims are incorporated into the specific embodiments as examples or embodiments, wherein each claim is independently used as a separate embodiment, and it is considered that these embodiments can be combined with each other in various combinations or arrangements. The scope of the present invention should be determined with reference to the attached claims and the full scope of equivalent forms granted by these claims.

[0156] The above embodiments are only exemplary embodiments of the present invention and are not intended to limit the present invention. The protection scope of the present invention is defined by the claims. Those skilled in the art may make various modifications or equivalent substitutions to the present invention within the essence and protection scope of the present invention, and such modifications or equivalent substitutions shall also be deemed to fall within the protection scope of the present invention.

Claims

1. A reversing valve, It is characterized in that include: A valve body, a valve cavity is formed therein, and the valve body has a water inlet, a first water outlet and a second water outlet; a first valve member at least partially disposed in the valve cavity; A second valve member is at least partially disposed in the valve cavity; wherein: The first valve component cooperates with the second valve component to define a first flow channel for connecting the first water outlet with the water inlet and a second flow channel for connecting the second water outlet with the water inlet; The first valve member is rotatable and has a rotation stroke, and the first valve member is used to change the size of the sum of the flow cross sections of the first flow channel and the second flow channel by rotating within the rotation stroke; The second valve member is movable and has a moving stroke, and the second valve member is used to change the sizes of the respective flow cross sections of the first flow channel and the second flow channel by moving within the moving stroke; The second valve member moves in a first moving direction so that a flow cross section of the first flow channel is reduced and a flow cross section of the second flow channel is increased; The second valve member increases the flow cross section of the first flow channel and reduces the flow cross section of the second flow channel by moving in a second movement direction opposite to the first movement direction; The portion of the first valve component located in the valve cavity is formed as a valve sleeve, and the portion of the second valve component located in the valve cavity is formed as a valve stem, and the valve stem extends into the inner hole of the valve sleeve; wherein: A flow guide cavity is formed in the valve stem, and the first flow channel and the second flow channel are both connected to the water inlet via the flow guide cavity; The first flow channel includes a first valve stem hole formed on the valve stem and a first valve sleeve hole formed on the valve sleeve; the first valve stem hole and the first valve sleeve hole define a flow cross section of the first flow channel based on an overlapping area; The second flow channel includes a second valve stem hole formed on the valve stem and a second valve sleeve hole formed on the valve sleeve; the second valve stem hole and the second valve sleeve hole define a flow cross section of the second flow channel based on an overlapping area.

2. The reversing valve according to claim 1, It is characterized in that The first valve stem hole and the second valve stem hole both radially penetrate the flow guide cavity and the outer periphery of the valve stem; The first valve sleeve hole and the second valve sleeve hole both radially penetrate the inner hole of the valve sleeve and the outer periphery of the valve sleeve.

3. The reversing valve according to claim 2, It is characterized in that The first valve sleeve hole and the second valve sleeve hole both include the same number of multiple holes; the multiple first valve sleeve holes and the multiple second valve sleeve holes are circumferentially arranged, and the cross-sections of the multiple circumferentially arranged first valve sleeve holes are different, and the cross-sections of the multiple circumferentially arranged second valve sleeve holes are different; wherein: By rotating the valve sleeve, the first valve stem hole is synchronously switched to be opposite to a different first valve sleeve hole and the second valve stem hole is synchronously switched to be opposite to a different second valve sleeve hole, so as to change the size of the sum of the flow cross-sections of the first flow channel and the second flow channel; The flow cross section of the first flow passage defined between the first valve stem hole and the first valve sleeve hole and the flow cross section of the second flow passage defined between the second valve stem hole and the second valve sleeve hole are changed by axially moving the valve stem.

4. The reversing valve according to claim 2, It is characterized in that The first valve stem hole and the second valve stem hole both include the same number of multiple holes; the multiple first valve stem holes and the multiple second valve stem holes are circumferentially arranged, and the cross-sections of the multiple circumferentially arranged first valve stem holes are different, and the cross-sections of the multiple circumferentially arranged second valve stem holes are different; wherein: The first valve sleeve hole is synchronously switched to be opposite to different first valve stem holes and the second valve sleeve hole is synchronously switched to be opposite to different second valve stem holes by rotating the valve sleeve, so as to change the size of the sum of the flow cross sections of the first flow channel and the second flow channel; The flow cross section of the first flow passage defined between the first valve stem hole and the first valve sleeve hole and the flow cross section of the second flow passage defined between the second valve stem hole and the second valve sleeve hole are changed by axially moving the valve stem.

5. The reversing valve according to claim 3, It is characterized in that The cross-sectional sizes of the plurality of first valve sleeve holes and the plurality of second valve sleeve holes are sequentially changed in the circumferential arrangement.

6. The reversing valve according to claim 1, It is characterized in that The sizes of the first valve sleeve hole and the second valve sleeve hole in the circumferential direction are smaller than those in the axial direction.

7. The reversing valve according to claim 6, It is characterized in that The cross-sections of the first valve sleeve hole and the second valve sleeve hole are bead-shaped or linear groove-shaped.

8. The reversing valve according to claim 1, It is characterized in that The flow guide cavity extends axially from the end surface of the insertion end of the valve stem; wherein: The valve sleeve is formed with a third valve sleeve hole, and the third valve sleeve hole radially passes through the inner hole and outer periphery of the valve sleeve, wherein: The water inlet is communicated with the flow guide cavity via the third valve sleeve hole and the inner hole of the valve sleeve.

9. The reversing valve according to claim 8, It is characterized in that The cross section of the third valve sleeve hole is larger than the cross section of the first valve sleeve hole and the cross section of the second valve sleeve hole.

10. The reversing valve according to claim 9, It is characterized in that The inner hole of the valve sleeve is a blind hole, and the third valve sleeve hole penetrates to the hole wall of the inner hole of the valve sleeve between the blind end of the inner hole of the valve sleeve and the extending end of the valve stem.

11. The reversing valve according to claim 1, It is characterized in that The first water outlet and the first valve sleeve hole have the same axial position; the second water outlet and the second valve sleeve hole have the same axial position; wherein: A first annular groove communicating with the first valve sleeve hole and the first water outlet and a second annular groove communicating with the second valve sleeve hole and the second water outlet are defined between the valve body and the valve sleeve.

12. The reversing valve according to claim 11, It is characterized in that The first annular groove and the second annular groove are both formed on the outer circumference of the valve sleeve.

13. The reversing valve according to claim 12, It is characterized in that The first valve sleeve hole penetrates to the groove bottom of the first annular groove, and the second valve sleeve hole penetrates to the groove bottom of the second annular groove.

14. The reversing valve according to claim 13, It is characterized in that Sealing rings are installed between the valve body and the valve sleeve on both sides of the first annular groove and between the valve body and the valve sleeve on both sides of the second annular groove.

15. The reversing valve according to claim 8, It is characterized in that The water inlet and the third valve sleeve hole have the same axial position; wherein: The valve body and the valve body define a third annular groove communicating with the third valve sleeve hole and the water inlet.

16. The reversing valve according to claim 15, It is characterized in that The third annular groove is formed on the outer circumference of the valve sleeve.

17. The reversing valve according to claim 16, It is characterized in that The third valve sleeve hole passes through to the bottom of the third annular groove.

18. The reversing valve according to claim 17, It is characterized in that Sealing rings are installed between the valve bodies on both sides of the third annular groove.

19. The reversing valve according to claim 8, It is characterized in that The water inlet, the first water outlet, and the second water outlet are arranged at intervals in the axial direction; the water inlet, the first water outlet, and the second water outlet are arranged at intervals in the circumferential direction.

20. The reversing valve according to claim 1, It is characterized in that The first valve component further includes a first driven portion connected to the valve sleeve; the second valve component further includes a second driven portion connected to the valve stem; wherein: The reversing valve further comprises a first driving mechanism for driving the first driven part to drive the valve sleeve to rotate, and a second driving mechanism for driving the second driven part to drive the valve stem to move axially.

21. The reversing valve according to claim 20, It is characterized in that The first driven portion extends out of a first end of the valve body, and the first driving mechanism is connected to the extended end of the first driven portion; The second driven portion extends out of the second end of the valve sleeve, and the second driving mechanism is used to drive the extended end of the second driven portion.

22. The reversing valve according to claim 21, It is characterized in that The second end of the valve body is provided with a detachable dividing component for sealing the second end of the valve body.

23. The reversing valve according to claim 21, It is characterized in that The first driving mechanism includes a motor connected to the protruding end of the first driven part or a screwing part connected to the protruding end of the first driven part.

24. The reversing valve according to claim 21, It is characterized in that The second driving mechanism comprises: a rotating component, which is sleeved on the protruding end of the second driven part and forms a spiral transmission with the protruding end of the second driven part; The motor is used for driving the rotating component to rotate so as to drive the second driven part to move axially.

25. The reversing valve according to claim 24, It is characterized in that A first bevel gear is formed on the rotating component; a second bevel gear is formed on the output shaft of the motor, and the second bevel gear is meshed with the first bevel gear; wherein: The number of teeth of the first bevel gear is greater than the number of teeth of the second bevel gear.

26. The reversing valve according to claim 24, It is characterized in that A shell is formed outside the rotating component; a guide hole coaxial with the second driven part is formed on the shell; wherein: The extended end portion of the second driven part extends into the guide hole, and a stopper is formed at the extended end of the second driven part, and the stopper is used to limit the rotation of the second driven part.

27. The reversing valve according to claim 20, It is characterized in that At least the valve sleeve in the first valve component is made of ceramic material; at least the valve stem in the second valve component is made of ceramic material.

28. The reversing valve according to claim 21, It is characterized in that The first driven portion is formed with a step surface, and the radial dimension of the step surface is smaller than the end surface of the valve cavity opposite to the step surface.

29. The reversing valve according to claim 23, It is characterized in that When the first driving mechanism is a screwing part, a shift mechanism is provided between the valve body and the first driven part, and the shift mechanism is used to enable a human hand to obtain a shift feeling when the screwing part is rotated.

30. A water purification system, Features Comprising a reversing valve as claimed in any one of claims 2 to 29.

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