Water treatment machine and control valve for water treatment machine

Abstract

The utility model provides a water treatment machine and a control valve for the water treatment machine, and the control valve for the water treatment machine comprises a driving element, a valve body and a valve core, wherein the valve body forms a valve cavity, a first opening, a second opening, a third opening, a fourth opening, a first fluid opening, a second fluid opening and a blow-off opening, the valve element is arranged in the valve cavity, the second fluid opening of the valve body is suitable for being communicated with a raw water source, and the third fluid opening of the valve body is suitable for being communicated with the blow-off opening. Wherein the control valve for the water treatment machine is a plane valve, the valve core further comprises a first fixed valve plate, a movable valve plate and a second fixed valve plate, and the driving element is arranged to be capable of driving the movable valve plate of the plane valve to rotate relative to the first fixed valve plate and the second fixed valve plate.

Description

Technical Field

[0001] The utility model relates to a water treatment machine, in particular to a water treatment machine capable of purifying raw water (or tap water) to obtain purified water. The utility model further relates to a control valve for a water treatment machine, which can control a larger flow of raw water to be supplied to the water treatment device of the water treatment machine when it is in the water treatment working position, so that a larger flow of raw water can be purified. Background Art

[0002] In modern industrial production, many industries require water with high cleanliness. However, the cleanliness of many water sources, whether surface water sources or groundwater sources, cannot meet the standards of industrial water. In order to obtain water with the desired water quality, it is necessary to purify the water from the water source (or raw water). When treating raw water, generally, the raw water from the water source is first roughly filtered to filter out larger particulate pollutants to obtain the roughly filtered water, and then the roughly filtered water is further filtered using materials such as activated carbon to obtain cleaner purified water (or ultrafiltration or RO membrane filtration). Finally, the raw water is subjected to multi-stage treatment (secondary or more stages of treatment) to obtain the treated water with the desired water quality. For example, people use a water filtration device (the filter material is quartz sand, activated carbon or PP cotton filter material, etc.) and a water ultrafiltration device (the filter material is generally ultrafiltration membrane filaments) to filter and ultrafilter the raw water in sequence; or use a water ultrafiltration device and an RO membrane water purification device to ultrafilter and RO membrane treat the raw water in sequence.

[0003] In addition, with the increasing improvement of people's living standards and the increasing attention to health, people's requirements for the quality of domestic water are also getting higher and higher. However, in many places, the tap water source is surface water, which is supplied to users after purification and disinfection. The treatment of the water retrieved from the water source by the waterworks is relatively rough and is not sufficient to remove all impurities. For example, particulate pollutants (flocculent gels, sediment, and even bacteria, etc.) are also increasingly difficult to meet people's needs. In addition, the aging of the tap water supply pipe network will also bring new pollution to the tap water. Therefore, in order to further purify tap water and improve its cleanliness, people also need various water treatment means to treat tap water.

[0004] However, many existing water treatment systems or water treatment devices for multi-stage treatment of raw water include multiple water treatment devices and multiple control valves that respectively control the flow of water inside the corresponding water treatment devices. Each control valve respectively controls to implement the water treatment function and flushing function of the corresponding water treatment device. The multiple control valves of the water treatment system result in high manufacturing costs, large occupied space, and at the same time, since the control valve is a relatively complex device, the multiple control valves cause a relatively high failure rate of the entire water treatment system. The Chinese invention patent with the application number CN201811089276.6 discloses a water treatment system, which includes two water treatment devices and a planar valve for controlling the water treatment devices to treat water, and can control the two water treatment devices to perform series purification treatment on water. However, the utilization rate of the flow control surfaces of the fixed valve plate 12 and the movable valve plate 13 of the planar valve 10 provided by this patent is relatively low. The channels of the fixed valve plate 12 of the planar valve 10 are arranged in two circles (except for the central part). Among them, the first channel 101, the second channel 102, the third channel 103, and the fourth channel 104 are arranged in the inner circle, and the fifth channel 105 is arranged in the outer circle. Correspondingly, the channels of the movable valve plate 13 of the planar valve 10 are also arranged in two circles. Among them, the sixth channel 106, the seventh channel 107, and the ninth channel 109 are arranged in the inner circle, and the eighth channel 108 is arranged in both the inner circle and the outer circle. In particular, when the water treatment system provided by this patent is controlled to be in the water treatment working position, the sixth channel 106 of the movable valve plate 13 and the first channel 101 of the fixed valve plate 12 of the planar valve 10 are the main water inlet channels, and only the inner circle part of the area can be used as the water inlet channel. The seventh channel 107 is respectively communicated with the second channel 102 and the third channel 103, and plays a role in serially conducting the first water treatment device 20 and the second water treatment device 30, and only the inner circle part of the area can be used to play the conduction role. The eighth channel 108 is respectively communicated with the fourth channel 104 and the fifth channel 105, and plays a role in conducting and supplying the purified water, and it is diverted from the inner circle channel to the outer circle channel. Therefore, the two-circle design of the channels of the fixed valve plate 12 and the movable valve plate 13 of the planar valve 10 provided by this patent results in too low total area of the flow control surfaces of the entire fixed valve plate and the movable valve plate, which greatly affects the size of the water flow when the water treatment machine purifies the raw water. In order to make the water flow passing through this multi-functional purification valve meet the requirements, it is necessary to increase the volume of this multi-functional purification valve, resulting in a relatively large size and inconvenient use. A relatively large size requires a thicker valve body wall thickness to ensure the stability of the valve body under water pressure, which directly leads to an increase in production costs. In addition, whether the movable valve plate of the multi-functional purification valve is made of a metal material or a ceramic material, when its size is too large, the yield rate will be reduced during manufacturing. In particular, when the movable valve plate of the multi-functional purification valve is made of a ceramic material, the larger its size, the more prone it is to cracking, and the service life is also significantly reduced.Finally, the control valve of the water treatment machine disclosed in this invention patent adopts a traditional double-valve plate structure. At least one diversion blind hole needs to be set on the movable valve plate to provide the treated water, so as to change the flow direction of the water. For example, the purified water disclosed in this patent flows upward from the fourth channel 104 of the fixed valve plate 12, and after being diverted through the eighth channel 108 (diversion blind hole) of the movable valve plate 13, it flows downward into the fifth channel 105 of the fixed valve plate 12, and then flows out from the fifth opening 1105 for water supply. It can be understood that when the water flow flows in the diversion blind hole (the eighth channel 108 of the movable valve plate 13), the flow direction changes by 360 degrees, which will cause a large resistance to the water flow and a great loss of the kinetic energy of the water flow, resulting in a significant reduction in the water flow rate. Utility Model Content

[0005] The main advantage of the present utility model is to provide a water treatment machine, in which the control valve of the water treatment machine of the present utility model has a brand-new spatial structure, and a single control valve of the water treatment machine of the present utility model can control the water treatment machine of the present utility model to realize the sequential series purification function of raw water. Further, a single control valve of the water treatment machine of the present utility model can also control the water treatment machine of the present utility model to be able to respectively perform reverse flushing and forward flushing on the water treatment materials of two water treatment devices.

[0006] Another advantage of the present utility model is to provide a water treatment machine, in which the control valve of the water treatment machine of the present utility model is further arranged to be able to significantly increase the proportion of the cross-sectional area of the channels for raw water inflow and purified water outflow (the area of the flow control surface opening formed on the fixed valve plate) in the total area of the flow control surface of the fixed valve plate when controlling the purification of raw water.

[0007] Other objects and features of the present utility model are fully embodied by the following detailed description.

[0008] According to one aspect of the present utility model, the control valve for a water treatment machine of the present utility model that can achieve the foregoing objects and other objects and advantages includes:

[0009] A driving element;

[0010] A valve body; and

[0011] A valve core, wherein the valve body forms a valve cavity, a first opening, a second opening, a third opening, a fourth opening, a first fluid opening, a second fluid opening, and a sewage discharge opening. The valve core is disposed in the valve cavity. The second fluid opening of the valve body is adapted to communicate with a raw water source. The control valve for the water treatment machine is a planar valve. The valve core further includes a first fixed valve plate, a movable valve plate, and a second fixed valve plate. The driving element is configured to drive the movable valve plate of the planar valve to rotate relative to the first fixed valve plate and the second fixed valve plate. The first fixed valve plate has a first fluid control surface, the movable valve plate has a second fluid control surface and a third fluid control surface, and the second fixed valve plate has a fourth fluid control surface. The first fixed valve plate, the movable valve plate, and the second fixed valve plate are all disposed in the valve cavity. The second fluid control surface and the third fluid control surface of the movable valve plate are respectively formed on opposite sides of the movable valve plate. The second fluid control surface of the movable valve plate is disposed on the first fluid control surface of the first fixed valve plate, the fourth fluid control surface of the second fixed valve plate is disposed on the third fluid control surface of the movable valve plate, and the movable valve plate is configured to be able to rotate relative to the first fixed valve plate and the second fixed valve plate. When the movable valve plate rotates relative to the first fixed valve plate and the second fixed valve plate, such that the planar valve is in a water treatment working position, the valve core of the planar valve forms a first water treatment flow channel that communicates with the second fluid opening and the first opening respectively, a second water treatment flow channel that communicates with the second opening and the third opening respectively, and a third water treatment flow channel that communicates with the fourth opening and the first fluid opening respectively.

[0012] According to another aspect of the present invention, the present invention further provides a water treatment machine, which includes:

[0013] A control valve; and

[0014] A first water treatment device; and

[0015] A second water treatment device, wherein the control valve includes a driving element, a valve body and a valve core. The valve body forms a valve cavity, a first opening, a second opening, a third opening, a fourth opening, a first fluid opening, a second fluid opening and a sewage discharge opening. The first water treatment device has a first water inlet and a first water outlet. The second water treatment device has a second water inlet and a second water outlet. The first opening of the valve body is adapted to communicate with the first water inlet of the first water treatment device. The second opening is adapted to communicate with the first water outlet of the first water treatment device. The third opening is adapted to communicate with the second water inlet of the second water treatment device. The fourth opening is adapted to communicate with the second water outlet of the second water treatment device. The valve core is disposed in the valve cavity. The second fluid opening of the valve body is adapted to communicate with a raw water source. The control valve for the water treatment machine is a flat valve. The valve core further includes a first fixed valve plate, a movable valve plate and a second fixed valve plate. The driving element is configured to drive the movable valve plate of the flat valve to rotate relative to the first fixed valve plate and the second fixed valve plate. The first fixed valve plate has a first fluid control surface. The movable valve plate has a second fluid control surface and a third fluid control surface. The second fixed valve plate has a fourth fluid control surface. The first fixed valve plate, the movable valve plate and the second fixed valve plate are all disposed in the valve cavity. The second fluid control surface and the third fluid control surface of the movable valve plate are respectively formed on opposite sides of the movable valve plate. The second fluid control surface of the movable valve plate is disposed on the first fluid control surface of the first fixed valve plate. The fourth fluid control surface of the second fixed valve plate is disposed on the third fluid control surface of the movable valve plate. And the movable valve plate is configured to be able to rotate relative to the first fixed valve plate and the second fixed valve plate. When the movable valve plate rotates relative to the first fixed valve plate and the second fixed valve plate, so that the flat valve is in a water treatment working position, the valve core of the flat valve forms a first water treatment flow channel that communicates with the second fluid opening and the first opening respectively, a second water treatment flow channel that communicates with the second opening and the third opening respectively, and a third water treatment flow channel that communicates with the fourth opening and the first fluid opening respectively.

[0016] Through the understanding of the subsequent description and the drawings, the further objects and advantages of the present utility model will be fully embodied.

[0017] These and other objects, features and advantages of the present utility model are fully embodied by the following detailed description and the drawings. Brief Description of the Drawings

[0018] Figure 1 It is a front view of the water treatment machine according to the embodiment of the present utility model described above.

[0019] Figure 2 is the assembly drawing of the water treatment machine according to the embodiment of the present utility model described above.

[0020] Figure 3A is a cross-sectional view of the first water treatment device of the water treatment machine according to the embodiment of the present utility model described above, which shows the water flow direction from the first water inlet to the first water outlet when the first water treatment device is used for water treatment or is flushed forward.

[0021] Figure 3B is a cross-sectional view of the first water treatment device of the water treatment machine according to the embodiment of the present utility model described above, which shows the water flow direction from the first water outlet to the first water inlet when the first water treatment device is flushed backward.

[0022] Figure 3C is a cross-sectional view of the second water treatment device of the water treatment machine according to the embodiment of the present utility model described above, which shows the water flow direction from the second water inlet to the second water outlet when the second water treatment device is used for water treatment or is flushed forward.

[0023] Figure 3D is a cross-sectional view of the second water treatment device of the water treatment machine according to the embodiment of the present utility model described above, which shows the water flow direction from the second water outlet to the second water inlet when the second water treatment device is flushed backward.

[0024] Figure 3E is a cross-sectional view of the water treatment machine according to the embodiment of the present utility model described above.

[0025] Figure 4 is a three-dimensional view of the control valve of the water treatment machine according to the embodiment of the present utility model described above.

[0026] Figure 5 is the assembly drawing of the control valve of the water treatment machine according to the embodiment of the present utility model described above.

[0027] Figure 6A is a three-dimensional view of the first valve body part of the valve body of the control valve of the water treatment machine according to the embodiment of the present utility model described above, wherein the figure shows the valve cavity of the valve body, the first opening, the second opening, the third opening and the fourth opening of the first valve body part.

[0028] Figure 6B is another three-dimensional view of the first valve body part of the control valve of the water treatment machine according to the embodiment of the present utility model described above, wherein the figure shows the valve cavity of the valve body, the first opening, the second opening, the third opening and the fourth opening of the first valve body part.

[0029] Figure 6C is another three-dimensional view of the first valve body part of the control valve of the water treatment machine according to the embodiment of the present utility model described above.

[0030] Figure 6D It is a cross-sectional view of the first valve body portion of the control valve of the water treatment machine according to the above-described embodiment of the present invention. The control valve is a flat valve, and the figure shows that the first channel of the flat valve is communicated with the first opening, the second channel is communicated with the second opening, the third channel is communicated with the third opening, and the fourth channel is communicated with the fourth opening.

[0031] Figure 6E It is a perspective view of the second valve body portion of the valve body of the flat valve of the water treatment machine according to the above-described embodiment of the present invention. The figure shows the first fluid opening and the sewage discharge opening of the second valve body portion, and the second fluid opening is provided in the second valve body portion of the valve body.

[0032] Figure 6F It is another perspective view of the second valve body portion of the flat valve of the water treatment machine according to the above-described embodiment of the present invention. The figure shows the first fluid opening and the sewage discharge opening of the second valve body portion, and the second fluid opening is provided in the second valve body portion of the valve body.

[0033] Figure 6G It is another perspective view of the second valve body portion of the flat valve of the water treatment machine according to the above-described embodiment of the present invention.

[0034] Figure 6H It is a cross-sectional view of the second valve body portion of the flat valve of the water treatment machine according to the above-described embodiment of the present invention. The figure shows that the second fluid opening is communicated with the valve cavity.

[0035] Figure 6I It is another cross-sectional view of the second valve body portion of the flat valve of the water treatment machine according to the above-described embodiment of the present invention. The figure shows that the fifth channel of the flat valve is communicated with the first fluid opening, the second fluid opening is communicated with the valve cavity, and the sewage discharge channel is communicated with the sewage discharge opening.

[0036] Figure 6J It is a perspective view of the first valve body portion and the first fixed valve plate of the valve body of the flat valve of the water treatment machine according to the above-described embodiment of the present invention. The first fixed valve plate is arranged in the valve cavity of the flat valve.

[0037] Figure 6K It is a perspective view of the first valve body portion, the first fixed valve plate and the movable valve plate of the valve body of the flat valve of the water treatment machine according to the above-described embodiment of the present invention. The movable valve plate is arranged in the valve cavity of the flat valve.

[0038] Figure 6LIt is a perspective view of the second valve body portion of the valve body of the flat valve of the water treatment machine according to the above embodiment of the present utility model and the second fixed valve plate, wherein the second fixed valve plate is arranged in the valve cavity of the flat valve.

[0039] Figure 6M It is a cross-sectional view of the flat valve of the water treatment machine according to the above embodiment of the present utility model, wherein the figure shows that the sewage discharge channel of the flat valve is communicated with the sewage discharge opening.

[0040] Figure 6N It is a cross-sectional view of the valve body of the flat valve of the water treatment machine according to the above embodiment of the present utility model, wherein the figure shows that the valve body includes the first valve body portion and the second valve body portion.

[0041] Figure 6O It is another cross-sectional view of the valve body of the flat valve of the water treatment machine according to the above embodiment of the present utility model, wherein the figure shows that the valve body includes the first valve body portion and the second valve body portion.

[0042] Figure 6P It is another cross-sectional view of the valve body of the flat valve of the water treatment machine according to the above embodiment of the present utility model, wherein the figure shows that the valve body includes the first valve body portion and the second valve body portion.

[0043] Figure 7A It is a perspective view of the first fixed valve plate of the flat valve of the water treatment machine according to the above embodiment of the present utility model.

[0044] Figure 7B It is a perspective view of the moving valve plate of the flat valve of the water treatment machine according to the above embodiment of the present utility model.

[0045] Figure 7C It is a perspective view of the second fixed valve plate of the flat valve of the water treatment machine according to the above embodiment of the present utility model.

[0046] Figure 7D It is a top view of the first fixed valve plate of the flat valve of the water treatment machine according to the above embodiment of the present utility model.

[0047] Figure 7E It is another perspective view of the first fixed valve plate of the flat valve of the water treatment machine according to the above embodiment of the present utility model.

[0048] Figure 7F It is a top view of the moving valve plate of the flat valve of the water treatment machine according to the above embodiment of the present utility model.

[0049] Figure 7G It is a bottom view of the moving valve plate of the flat valve of the water treatment machine according to the above embodiment of the present utility model.

[0050] Figure 7HIt is a top view of the second fixed valve plate of the flat valve of the water treatment machine according to the above embodiment of the present utility model.

[0051] Figure 7I It is another three-dimensional view of the second fixed valve plate of the flat valve of the water treatment machine according to the above embodiment of the present utility model.

[0052] Figure 8A It is a schematic structural view of the first fixed valve plate of the flat valve of the water treatment machine according to the above embodiment of the present utility model.

[0053] Figure 8B It is a schematic structural view of the movable valve plate of the flat valve of the water treatment machine according to the above embodiment of the present utility model, wherein the dotted line in the figure indicates the conduction blind hole and the sixth channel of the movable valve plate.

[0054] Figure 8C It is a schematic structural view of the second fixed valve plate of the flat valve of the water treatment machine according to the above embodiment of the present utility model.

[0055] Figure 9A It is an equal division schematic view of the first fluid control surface of the first fixed valve plate of the flat valve of the water treatment machine according to the above embodiment of the present utility model, wherein the figure shows the specific equal division positions of each channel arranged on the first fluid control surface of the first fixed valve plate.

[0056] Figure 9B It is an equal division schematic view of the second fluid control surface of the movable valve plate of the flat valve of the water treatment machine according to the above embodiment of the present utility model, wherein the figure shows the specific equal division positions of each channel arranged on the second fluid control surface of the movable valve plate.

[0057] Figure 9C It is an equal division schematic view of the third fluid control surface of the movable valve plate of the flat valve of the water treatment machine according to the above embodiment of the present utility model, wherein the figure shows the specific equal division positions of each channel arranged on the third fluid control surface of the movable valve plate.

[0058] Figure 9D It is an equal division schematic view of the fourth fluid control surface of the second fixed valve plate of the flat valve of the water treatment machine according to the above embodiment of the present utility model, wherein the figure shows the specific equal division positions of each channel arranged on the fourth fluid control surface of the second fixed valve plate.

[0059] Figure 10A It is a communication schematic view between the channels of the movable valve plate and the channels of the first fixed valve plate of the flat valve when the flat valve of the water treatment machine is in its water treatment working position according to the above embodiment of the present utility model, wherein the shaded part with oblique lines in the figure indicates the mutually communicating channels between the movable valve plate and the first fixed valve plate of the flat valve.

[0060] Figure 10B It is a schematic diagram of the communication between the channel of the moving valve plate and the channel of the second fixed valve plate of the flat valve of the water treatment machine according to the above embodiment of the present invention when the flat valve is in its water treatment working position. The slanted shaded part in the figure shows the mutually communicating channels of the moving valve plate and the second fixed valve plate of the flat valve, and the grid shaded part in the figure shows that the channels of the moving valve plate and the second fixed valve plate of the flat valve are not communicating.

[0061] Figure 10C It is a schematic diagram of the communication between the channel of the moving valve plate and the channel of the first fixed valve plate of the flat valve of the water treatment machine according to the above embodiment of the present invention when the flat valve is in its first backwashing working position. The slanted shaded part in the figure shows the mutually communicating channels of the moving valve plate and the first fixed valve plate of the flat valve.

[0062] Figure 10D It is a schematic diagram of the communication between the channel of the moving valve plate and the channel of the second fixed valve plate of the flat valve of the water treatment machine according to the above embodiment of the present invention when the flat valve is in its first backwashing working position. The slanted shaded part in the figure shows the mutually communicating channels of the moving valve plate and the second fixed valve plate of the flat valve, and the grid shaded part in the figure shows that the channels of the moving valve plate and the second fixed valve plate of the flat valve are not communicating.

[0063] Figure 10E It is a schematic diagram of the communication between the channel of the moving valve plate and the channel of the first fixed valve plate of the flat valve of the water treatment machine according to the above embodiment of the present invention when the flat valve is in its second backwashing working position. The slanted shaded part in the figure shows the mutually communicating channels of the moving valve plate and the first fixed valve plate of the flat valve.

[0064] Figure 10F It is a schematic diagram of the communication between the channel of the moving valve plate and the channel of the second fixed valve plate of the flat valve of the water treatment machine according to the above embodiment of the present invention when the flat valve is in its second backwashing working position. The slanted shaded part in the figure shows the mutually communicating channels of the moving valve plate and the second fixed valve plate of the flat valve, and the grid shaded part in the figure shows that the channels of the moving valve plate and the second fixed valve plate of the flat valve are not communicating.

[0065] Figure 10G It is a schematic diagram of the communication between the channel of the moving valve plate and the channel of the first fixed valve plate of the flat valve of the water treatment machine according to the above embodiment of the present invention when the flat valve is in its first flushing working position. The slanted shaded part in the figure shows the mutually communicating channels of the moving valve plate and the first fixed valve plate of the flat valve.

[0066] Figure 10HIt is a schematic diagram of the communication between the channel of the movable valve plate and the channel of the second fixed valve plate of the flat valve of the water treatment machine according to the above embodiment of the present utility model when the flat valve is in its first normal flushing working position. The slanted shaded part in the figure shows the mutually communicating channels between the movable valve plate and the second fixed valve plate of the flat valve, and the grid shaded part in the figure shows that the channels of the movable valve plate and the second fixed valve plate of the flat valve are not communicating.

[0067] Figure 10I It is a schematic diagram of the communication between the channel of the movable valve plate and the channel of the first fixed valve plate of the flat valve of the water treatment machine according to the above embodiment of the present utility model when the flat valve is in its second normal flushing working position. The slanted shaded part in the figure shows the mutually communicating channels between the movable valve plate and the first fixed valve plate of the flat valve.

[0068] Figure 10J It is a schematic diagram of the communication between the channel of the movable valve plate and the channel of the second fixed valve plate of the flat valve of the water treatment machine according to the above embodiment of the present utility model when the flat valve is in its second normal flushing working position. The slanted shaded part in the figure shows the mutually communicating channels between the movable valve plate and the second fixed valve plate of the flat valve, and the grid shaded part in the figure shows that the channels of the movable valve plate and the second fixed valve plate of the flat valve are not communicating.

[0069] Figure 11A It is a cross-sectional view of the flat valve of the water treatment machine according to the above embodiment of the present utility model, where the flat valve shown in the figure is in the water treatment working position.

[0070] Figure 11B It is another cross-sectional view of the flat valve of the water treatment machine according to the above embodiment of the present utility model, where the flat valve shown in the figure is in the water treatment working position.

[0071] Figure 12 It is another cross-sectional view of the flat valve of the water treatment machine according to the above embodiment of the present utility model, where the flat valve shown in the figure is in the first backwashing working position.

[0072] Figure 13 It is another cross-sectional view of the flat valve of the water treatment machine according to the above embodiment of the present utility model, where the flat valve shown in the figure is in the second backwashing working position.

[0073] Figure 14 It is another cross-sectional view of the flat valve of the water treatment machine according to the above embodiment of the present utility model, where the flat valve shown in the figure is in the first normal flushing working position.

[0074] Figure 15 It is another cross-sectional view of the flat valve of the water treatment machine according to the above embodiment of the present utility model, where the flat valve shown in the figure is in the second normal flushing working position.

[0075] Figure 16A It is a schematic structural diagram of the water treatment machine according to the embodiment of the present utility model above. Among them, the flat valve of the water treatment machine shown in this figure is in the water treatment working position, the water treatment machine is controlled to be in its water treatment working state, and the arrow direction in this figure indicates the water flow direction.

[0076] Figure 16B It is another schematic structural diagram of the water treatment machine according to the embodiment of the present utility model above. Among them, the flat valve of the water treatment machine shown in this figure is in the first backwashing working position, the water treatment machine is controlled to be in its first backwashing working state, and the arrow direction in this figure indicates the water flow direction.

[0077] Figure 16C It is another schematic structural diagram of the water treatment machine according to the embodiment of the present utility model above. Among them, the flat valve of the water treatment machine shown in this figure is in the second backwashing working position, the water treatment machine is controlled to be in its second backwashing working state, and the arrow direction in this figure indicates the water flow direction.

[0078] Figure 16D It is another schematic structural diagram of the water treatment machine according to the embodiment of the present utility model above. Among them, the flat valve of the water treatment machine shown in this figure is in the first flushing working position, the water treatment machine is controlled to be in its first flushing working state, and the arrow direction in this figure indicates the water flow direction.

[0079] Figure 16E It is another schematic structural diagram of the water treatment machine according to the embodiment of the present utility model above. Among them, the flat valve of the water treatment machine shown in this figure is in the second flushing working position, the water treatment machine is controlled to be in its second flushing working state, and the arrow direction in this figure indicates the water flow direction.

[0080] Figure 17A It is a perspective view of an optional implementation of the control valve of the water treatment machine according to the embodiment of the present utility model above. Among them, this figure shows that the second fluid opening is arranged in the first valve body part of the valve body.

[0081] Figure 17B It is a cross-sectional view of the optional implementation of the control valve of the water treatment machine according to the embodiment of the present utility model above. Among them, this figure shows that the second fluid opening is arranged in the first valve body part of the valve body. Detailed implementation manners

[0082] The following description is used to disclose the present utility model so that those skilled in the art can implement the present utility model. The preferred embodiments in the following description are only examples, and those skilled in the art can think of other obvious variations. The basic principles defined in the following description of the present utility model can be applied to other implementation schemes, variant schemes, improvement schemes, equivalent schemes, and other technical schemes that do not deviate from the spirit and scope of the present utility model.

[0083] Those skilled in the art should understand that in the disclosure of the present utility model, the orientation or positional relationship indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as limiting the present utility model.

[0084] It can be understood that the term "a" should be understood as "at least one" or "one or more". That is, in one embodiment, the number of an element can be one, while in other embodiments, the number of the element can be multiple. The term "a" should not be construed as limiting the quantity.

[0085] Referring to the accompanying drawings of the specification Figures 1 to 3E ,a water treatment machine according to an embodiment of the present utility model is illustrated, wherein the water treatment machine of the present utility model includes a control valve 1, a first water treatment device 51 and a second water treatment device 52. The first water treatment device 51 has a first water inlet 511 and a first water outlet 512, so that water can flow into through the first water inlet 511 of the first water treatment device 51 and flow out through the first water outlet 512, or can flow into through the first water outlet 512 of the first water treatment device 51 and flow out through the first water inlet 511; the second water treatment device 52 has a second water inlet 521 and a second water outlet 522, so that water can flow into through the second water inlet 521 of the second water treatment device 52 and flow out through the second water outlet 522, or can flow into through the second water outlet 522 of the second water treatment device 52 and flow out through the second water inlet 521. The control valve 1 is arranged to control the flow of water, such as controlling the water flow to be supplied to the first water treatment device 51 and / or the second water treatment device 52, controlling the water flow in the first water treatment device 51 and the second water treatment device 52, and controlling the supply of the treated water. It can be understood that the control valve 1 of the water treatment machine of the present utility model is adapted to be connected to a water source. For example, the control valve 1 of the water treatment machine of the present utility model can be connected to a water supply pipe. In other words, the control valve 1 controls the raw water (for example, tap water) to be supplied to the first water treatment device 51 and / or the second water treatment device 52.

[0086] As shown in the accompanying drawings Figure 3A and Figure 3BAs shown, exemplarily, the first water treatment device 51 of the water treatment machine according to an embodiment of the present invention includes a first outer shell 513, a first central tube 514, and first water treatment materials 515. The first outer shell 513 has a first end 5131 and a first shell body 5132 extending from the first end 5131. The first central tube 514 has a first upper end 5141 and a first lower end 5142. The first water inlet 511 is formed between the first end 5131 and the first upper end 5141 of the first tube. The first upper end 5141 of the first tube forms the first water outlet 512. The first water treatment materials 515 are disposed between the first outer shell 513 and the first central tube 514, wherein the first central tube 514 is arranged such that the primary treated water generated after the raw water is treated by the first water treatment materials 515 can be collected by the first central tube 514. It can be understood that the first water treatment materials 515 of the first water treatment device 51 of the water treatment machine according to an embodiment of the present invention can be filter materials, such as activated carbon, PP cotton, or quartz sand and other filter materials. It can be understood that the first water treatment materials 515 of the first water treatment device 51 of the water treatment machine according to an embodiment of the present invention can be dispersedly distributed filter materials, or formed filter materials obtained by various forming techniques. The first water treatment materials 515 of the first water treatment device 51 of the water treatment machine according to an embodiment of the present invention may also be water treatment materials, such as water treatment resin. Those skilled in the art can understand that the first water treatment device 51 of the water treatment machine of the present invention can also be any other water treatment device having a water inlet and a water outlet.

[0087] As shown in the accompanying drawings Figure 3C and Figure 3DAs shown, exemplarily, the second water treatment device 52 of the water treatment machine according to an embodiment of the present invention includes a second outer shell 523, a second central tube 524, and second water treatment materials 525. The second outer shell 523 has a second end portion 5231 and a second shell main body 5232 extending from the second end portion 5231. The second central tube 524 has a second upper end 5241 and a second lower end 5242 extending downward from the second upper end 5241. The second water inlet 521 is formed between the second end portion 5231 of the second outer shell 523 and the second upper end 5241 of the second central tube. The second upper end 5241 forms the second water outlet 522. The second water treatment materials 525 are disposed between the second outer shell 523 and the second central tube 524. Wherein the second central tube 524 is arranged such that the secondary treated water generated after the primary treated water flowing in from the second water inlet 521 is treated by the second water treatment materials 525 can be collected by the second central tube 524. It can be understood that the second water treatment materials 525 of the second water treatment device 52 of the water treatment machine according to an embodiment of the present invention may be filter materials, such as activated carbon, PP cotton, or quartz sand and other filter materials. It can be understood that the second water treatment materials 525 of the second water treatment device 52 of the water treatment machine according to an embodiment of the present invention may be dispersedly distributed filter materials, or formed filter materials obtained by various forming techniques. The second water treatment materials 525 of the second water treatment device 52 of the water treatment machine according to an embodiment of the present invention may also be water treatment materials, such as water treatment resin. Those skilled in the art can understand that the second water treatment device 52 of the water treatment machine of the present invention may also be any other water treatment device having a water inlet and a water outlet.

[0088] As shown in the accompanying drawings Figure 3A and 3C shown, when the water treatment machine according to an embodiment of the present invention is in water treatment or forward flushing (normal flushing) treatment, the water flow of the first water treatment device 51 sequentially flows through the first water inlet 511, the first water treatment materials 515, the first lower end 5142 of the first tube, the first upper end 5141 of the first tube, and the first water outlet 512. The water flow of the second water treatment device 52 sequentially flows through the second water inlet 521, the second water treatment materials 525, the second lower end 5242 of the second tube, the second upper end 5241 of the second tube, and the second water outlet 522. As shown in the accompanying drawings Figure 3B and 3DAs shown, when the water treatment machine according to the embodiment of the present utility model is performing reverse flushing (backwashing) treatment, the water flow of the first water treatment device 51 sequentially passes through the first water outlet 512, the upper end 5141 of the first pipe, the lower end 5142 of the first pipe, the first water treatment material 515, and the first water inlet 511, and the water flow of the second water treatment device 52 sequentially passes through the second water outlet 522, the upper end 5241 of the second pipe, the lower end 5242 of the second pipe, the second water treatment material 525, and the second water inlet 521.

[0089] As shown in the accompanying drawings Figures 2 to 6P As shown, the control valve 1 of the water treatment machine according to the embodiment of the present utility model includes a valve body 10 and a valve core 12. The valve body 10 forms a valve cavity 110, a first opening 1101, a second opening 1102, a third opening 1103, a fourth opening 1104, a first fluid opening 1105, a second fluid opening 1106, and a sewage opening 1109. The valve core 12 is disposed in the valve cavity 110. The first opening 1101 of the valve body 10 is adapted to communicate with the first water inlet 511 of the first water treatment device 51, the second opening 1102 is adapted to communicate with the first water outlet 512 of the first water treatment device 51, the third opening 1103 is adapted to communicate with the second water inlet 521 of the second water treatment device 52, the fourth opening 1104 is adapted to communicate with the second water outlet 522 of the second water treatment device 52, and the second fluid opening 1106 is adapted to communicate with a raw water source (for example, a water pipe).

[0090] As shown in the accompanying drawings Figures 4 to 8CAs shown, more specifically, the control valve 1 of the water treatment machine according to an embodiment of the present utility model is a flat valve. The valve core 12 of the flat valve 1 further includes a first fixed valve piece 121, a movable valve piece 122, and a second fixed valve piece 123. The first fixed valve piece 121 has a first fluid control surface 1210, the movable valve piece 122 has a second fluid control surface 1220 and a third fluid control surface 1223, and the second fixed valve piece 123 has a fourth fluid control surface 1230. The first fixed valve piece 121, the movable valve piece 122, and the second fixed valve piece 123 are all disposed in the valve cavity 110. The second fluid control surface 1220 and the third fluid control surface 1223 of the movable valve piece 122 are respectively formed on opposite sides of the movable valve piece 122. The second fluid control surface 1220 of the movable valve piece 122 is disposed on the first fluid control surface 1210 of the first fixed valve piece 121, the fourth fluid control surface 1230 of the second fixed valve piece 123 is disposed on the third fluid control surface 1223 of the movable valve piece 122, and the movable valve piece 122 is disposed to be rotatable relative to the first fixed valve piece 121 and the second fixed valve piece 123. Correspondingly, the first fixed valve piece 121 is disposed between the valve body 10 and the movable valve piece 122, the second fixed valve piece 123 is disposed between the valve body 10 and the movable valve piece 122, and the first fixed valve piece 121 is disposed to remain relatively stationary with respect to the valve body 10, and the second fixed valve piece 123 is disposed to remain relatively stationary with respect to the valve body 10. Preferably, the second fluid opening 1106 communicates with the valve cavity 110 of the valve body 10. More specifically, the first fixed valve piece 121 of the valve core 12 of the control valve 1 of the water treatment machine of the present utility model is disposed below the movable valve piece 122, and the second fixed valve piece 123 is disposed above the movable valve piece 122.

[0091] As shown in the attached drawings Figures 4 to 6P , Figure 17A and Figure 17B As shown, the valve body 10 of the control valve 1 of the water treatment machine according to an embodiment of the present utility model includes a first valve body part 11 and a second valve body part 13. The valve cavity 110 is formed between the first valve body part 11 and the second valve body part 13. The first opening 1101, the second opening 1102, the third opening 1103, and the fourth opening 1104 are formed in the first valve body part 11. The first fluid opening 1105 and the sewage opening 1109 are formed in the second valve body part 13. The second fluid opening 1106 is selectively disposed in the first valve body part 11 or the second valve body part 13 of the valve body 10. In other words, the second fluid opening 1106 can be disposed in the first valve body part 11 of the valve body 10 or can be disposed in the second valve body part 13 of the valve body 10.

[0092] As shown in the attached drawings Figure 11A, Figure 11B and Figure 16AAs shown, the control valve 1 of the water treatment machine according to the embodiment of the present invention has a water treatment working position. When the control valve 1 is in the water treatment working position, the valve core 12 of the control valve 1 forms a first water treatment flow channel 10011, a second water treatment flow channel 10012, and a third water treatment flow channel 10013. The first water treatment flow channel 10011 is respectively communicated with the second fluid opening 1106 and the first opening 1101. The second water treatment flow channel 10012 is respectively communicated with the second opening 1102 and the third opening 1103. The third water treatment flow channel 10013 is respectively communicated with the fourth opening 1104 and the first fluid opening 1105. Correspondingly, when the control valve 1 is in the water treatment working position, raw water flows into from the second fluid opening 1106 of the valve body 10 of the control valve 1 under the action of water pressure, flows through the first water treatment flow channel 10011 to the first opening 1101 of the first valve body portion 11, and under the action of water pressure, further flows into the first water treatment device 51 from the first water inlet 511. The primary treated water after being treated by the first water treatment device 51 flows out from the first water outlet 512 under the action of water pressure and further flows into the second opening 1102 of the first valve body portion 11, then flows into the third opening 1103 of the first valve body portion 11 through the second water treatment flow channel 10012, further flows into the second water treatment device 52 from the second water inlet 521, and under the action of water pressure, is further treated by the second water treatment device 52. The secondary treated water generated flows out from the second water outlet 522 under the action of water pressure and flows into the fourth opening 1104. The secondary treated water flowing into the fourth opening 1104 flows through the third water treatment flow channel 10013 to the first fluid opening 1105 and is provided. Correspondingly, when the control valve 1 of the water treatment machine according to the embodiment of the present invention is controlled to be in the water treatment working position, the water flow sequentially passes through the second fluid opening 1106 of the valve body 10, the first water treatment flow channel 10011, the first opening 1101 of the first valve body portion 11, the first water inlet 511 of the first water treatment device 51, the first water outlet 512 of the first water treatment device 51, the second opening 1102 of the first valve body portion 11, the second water treatment flow channel 10012, the third opening 1103 of the first valve body portion 11, the second water inlet 521 of the second water treatment device 52, the second water outlet 522 of the second water treatment device 52, the fourth opening 1104 of the first valve body portion 11, the third water treatment flow channel 10013, and the first fluid opening 1105. Thus, the control valve 1 of the water treatment machine of the present invention can control two water treatment devices of the water treatment machine of the present invention to be connected in series. It can be understood that when the control valve 1 of the water treatment machine according to the embodiment of the present invention is controlled to be in the water treatment working position, the water treatment machine of the present invention is controlled to be in its water treatment working state.

[0093] As shown in the accompanying drawings Figure 12 and Figure 16B shown, the control valve 1 of the water treatment machine according to the embodiment of the present utility model further has a first backwashing working position. When the control valve 1 is in the first backwashing working position, the valve core 12 of the control valve 1 forms a first backwashing flow channel 10021 and a second backwashing flow channel 10022. The first backwashing flow channel 10021 is respectively communicated with the second fluid opening 1106 and the second opening 1102, and the second backwashing flow channel 10022 is respectively communicated with the first opening 1101 and the sewage discharge opening 1109. Correspondingly, when the control valve 1 is in the first backwashing working position, raw water flows in from the second fluid opening 1106 of the valve body 10 of the control valve 1 under the action of water pressure, flows through the first backwashing flow channel 10021 to the second opening 1102 of the first valve body portion 11, further flows into the first water treatment device 51 from the first water outlet 512 of the first water treatment device 51, and reversely flushes the first water treatment device 51 under the action of water pressure. The generated sewage flows out from the first water inlet 511 of the first water treatment device 51, and then, under the action of water pressure, passes through the first opening 1101 of the first valve body portion 11 of the control valve 1, the second backwashing flow channel 10022 and the sewage discharge opening 1109 and is discharged. When the control valve 1 of the water treatment machine according to the embodiment of the present utility model is controlled to be in the first backwashing working position, the water treatment machine of the present utility model is controlled to be in its first backwashing working state.

[0094] As shown in the accompanying drawings Figure 13 and Figure 16CAs shown, the control valve 1 of the water treatment machine according to the embodiment of the present utility model further has a second backwashing working position. When the control valve 1 is in the second backwashing working position, the valve core 12 of the control valve 1 forms a third backwashing flow channel 10023 and a fourth backwashing flow channel 10024. The third backwashing flow channel 10023 is respectively communicated with the second fluid opening 1106 and the fourth opening 1104, and the fourth backwashing flow channel 10024 is respectively communicated with the third opening 1103 and the sewage discharge opening 1109. Correspondingly, when the control valve 1 is in the second backwashing working position, under the action of water pressure, raw water flows into from the second fluid opening 1106 of the valve body 10 of the control valve 1, flows through the third backwashing flow channel 10023 to the fourth opening 1104 of the first valve body part 11, further flows into the second water treatment device 52 from the second water outlet 522 of the second water treatment device 52, and reversely flushes the second water treatment device 52 under the action of water pressure. The generated sewage flows out from the second water inlet 521 of the second water treatment device 52, and then, under the action of water pressure, passes through the third opening 1103 of the first valve body part 11 of the control valve 1, the fourth backwashing flow channel 10024 and the sewage discharge opening 1109 and is discharged. When the control valve 1 of the water treatment machine according to the embodiment of the present utility model is controlled to be in the second backwashing working position, the water treatment machine of the present utility model is controlled to be in its second backwashing working state. It can be understood that the backwashing in this article refers to that when the water flow flushes the water treatment device (the first water treatment device 51 or the second water treatment device 52) of the water treatment machine of the present utility model, the flowing direction of the water flow through the water treatment device of the water treatment machine of the present utility model is opposite to the flowing direction of the raw water through the water treatment device of the water treatment machine of the present utility model when the water treatment device of the water treatment machine of the present utility model treats the raw water.

[0095] As shown in the attached drawings Figure 14 and Figure 16DAs shown, the control valve 1 of the water treatment machine according to the embodiment of the present utility model further has a first normal flushing working position. When the control valve 1 is in the first normal flushing working position, the valve core 12 of the control valve 1 forms a first normal flushing flow channel 10031 and a second normal flushing flow channel 10032. The first normal flushing flow channel 10031 is respectively communicated with the second fluid opening 1106 and the first opening 1101, and the second normal flushing flow channel 10032 is respectively communicated with the second opening 1102 and the sewage discharge opening 1109. Correspondingly, when the control valve 1 is in the first normal flushing working position, under the action of water pressure, raw water flows in from the second fluid opening 1106 of the valve body 10 of the control valve 1, flows through the first normal flushing flow channel 10031 to the first opening 1101 of the first valve body part 11, further flows into the first water treatment device 51 from the first water inlet 511 of the first water treatment device 51, and under the action of water pressure, positively flushes the first water treatment device 51. The generated sewage flows out from the first water outlet 512 of the first water treatment device 51, and then, under the action of water pressure, passes through the second opening 1102 of the first valve body part 11 of the control valve 1, the second normal flushing flow channel 10032 and the sewage discharge opening 1109 and is discharged. When the control valve 1 of the water treatment machine according to the embodiment of the present utility model is controlled to be in the first normal flushing working position, the water treatment machine of the present utility model is controlled to be in its first normal flushing working state.

[0096] As shown in the attached drawings Figure 15 and Figure 16EAs shown, the control valve 1 of the water treatment machine according to the embodiment of the present utility model further has a second normal flushing working position. When the control valve 1 is in the second normal flushing working position, the valve core 12 of the control valve 1 forms a third normal flushing flow channel 10033 and a fourth normal flushing flow channel 10034. The third normal flushing flow channel 10033 is respectively communicated with the second fluid opening 1106 and the third opening 1103, and the fourth normal flushing flow channel 10034 is respectively communicated with the fourth opening 1104 and the sewage discharge opening 1109. Correspondingly, when the control valve 1 is in the second normal flushing working position, under the action of water pressure, raw water flows in from the second fluid opening 1106 of the valve body 10 of the control valve 1, flows through the third normal flushing flow channel 10033 to the third opening 1103 of the first valve body part 11, further flows into the second water treatment device 52 from the second water inlet 521 of the second water treatment device 52, and under the action of water pressure, normally flushes the second water treatment device 52. The generated sewage flows out from the second water outlet 522 of the second water treatment device 52, and then, under the action of water pressure, passes through the fourth opening 1104 of the first valve body part 11 of the control valve 1, the fourth normal flushing flow channel 10034 and the sewage discharge opening 1109 and is discharged. When the control valve 1 of the water treatment machine according to the embodiment of the present utility model is controlled to be in the second normal flushing working position, the water treatment machine of the present utility model is controlled to be in its second normal flushing working state.

[0097] It can be understood that the normal flushing herein refers to that when the water flow flushes the water treatment device (the first water treatment device 51 or the second water treatment device 52) of the water treatment machine of the present utility model, the flow direction of the water flowing through the water treatment device of the water treatment machine of the present utility model is the same as the flow direction of the raw water flowing through the water treatment device of the water treatment machine of the present utility model when the water treatment device of the water treatment machine of the present utility model treats the raw water. Generally, the time for normally flushing the water treatment device of the water treatment machine of the present utility model with water flow is after the reverse flushing to wash away the waste water generated by the reverse flushing remaining in the water treatment device of the water treatment machine of the present utility model. In addition, if the filter material of the water treatment device of the water treatment machine of the present utility model is particulate filter material, the normal flushing can also play a role in compacting the filter material to make it have a better water treatment effect.

[0098] As shown in the attached drawing Figures 11A to 16E As shown, the control valve 1 of the water treatment machine according to the first embodiment of the present utility model, more specifically, the control valve 1 of a single water treatment machine of the present utility model, is arranged to be able to control the first water treatment device 51 and the second water treatment device 52 of the water treatment machine of the present utility model to be connected in series and perform secondary treatment on the raw water, and control the raw water to respectively and separately perform reverse flushing and normal flushing on the first water treatment device 51 and the second water treatment device 52 of the water treatment machine of the present utility model.

[0099] As shown in the accompanying drawings, Figures 4 to 8C the flat valve 1 of the water treatment machine according to the embodiment of the present utility model has a first channel 101, a second channel 102, a third channel 103, a fourth channel 104, a fifth channel 105, a sixth channel 106, a seventh channel 107, an eighth channel 108 and a sewage discharge channel 109. Among them, the first channel 101, the second channel 102, the third channel 103 and the fourth channel 104 are respectively arranged on the first fixed valve plate 121 and respectively extend from the first fluid control surface 1210 of the first fixed valve plate 121; the sixth channel 106, the seventh channel 107 and the eighth channel 108 are respectively arranged on the movable valve plate 122, wherein the sixth channel 106 and the seventh channel 107 respectively extend from the second fluid control surface 1220 of the movable valve plate 122, and the eighth channel 108 extends from the second fluid control surface 1220 of the movable valve plate 122 to the third fluid control surface 1223; the fifth channel 105 and the sewage discharge channel 109 are respectively arranged on the second fixed valve plate 123 and respectively extend from the fourth fluid control surface 1230 of the second fixed valve plate 123. Among them, the first channel 101 is communicated with the first opening 1101, the second channel 102 is communicated with the second opening 1102, the third channel 103 is communicated with the third opening 1103, the fourth channel 104 is communicated with the fourth opening 1104, the fifth channel 105 is communicated with the first fluid opening 1105, the sixth channel 106 is communicated with the second fluid opening 1106, and the sewage discharge channel 109 is communicated with the sewage discharge opening 1109. Preferably, the seventh channel 107 is a conducting blind hole. Preferably, the eighth channel 108 is a conducting through hole. Preferably, the sixth channel 106 is communicated with the second fluid opening 1106 through the valve cavity 110.

[0100] As shown in the accompanying drawings, Figures 7A to 9DAs shown, the first fluid control surface 1210 of the first fixed valve plate 121 of the plane valve 1 according to the embodiment of the present utility model forms a central portion 12101 and an edge portion 12102 extending outward from the central portion 12101. The first channel 101, the fourth channel 104, the second channel 102, and the third channel 103 of the plane valve 1 are arranged in this order clockwise on the edge portion 12102 of the first fluid control surface 1210 of the first fixed valve plate 121. The sixth channel 106, the eighth channel 108, and the seventh channel 107 of the plane valve 1 are arranged in this order clockwise on the second fluid control surface 1220 of the movable valve plate 122. The fifth channel 105 and the sewage discharge channel 109 of the plane valve 1 are arranged on the fourth fluid control surface 1230 of the second fixed valve plate 123. Optionally, the first channel 101, the fourth channel 104, the second channel 102, and the third channel 103 of the plane valve 1 are arranged in this order counterclockwise on the edge portion 12102 of the first fluid control surface 1210 of the first fixed valve plate 121. The sixth channel 106, the eighth channel 108, and the seventh channel 107 of the plane valve 1 are arranged in this order counterclockwise on the second fluid control surface 1220 of the movable valve plate 122. Preferably, the first channel 101, the fourth channel 104, the second channel 102, and the third channel 103 of the plane valve 1 are arranged separately on the first fluid control surface 1210 of the first fixed valve plate 121; the sixth channel 106, the eighth channel 108, and the seventh channel 107 of the plane valve 1 are arranged separately on the second fluid control surface 1220 of the movable valve plate 122; the fifth channel 105 and the sewage discharge channel 109 of the plane valve 1 are arranged separately on the fourth fluid control surface 1230 of the second fixed valve plate 123.

[0101] As shown in the accompanying drawings Figure 10A , Figure 10B , Figure 11A , Figure 11B and Figure 16AAs shown, the movable valve plate 122 of the flat valve 1 of the water treatment machine according to the embodiment of the present utility model can rotate relative to the first fixed valve plate 121 and the second fixed valve plate 123, so that the flat valve 1 has a water treatment working position. When the flat valve 1 is in the water treatment working position, the sixth channel 106 of the flat valve 1 is connected to the first channel 101, thereby forming the first water treatment flow channel 10011 that is respectively connected to the second fluid opening 1106 and the first opening 1101. The seventh channel 107 is respectively connected to the second channel 102 and the third channel 103, thereby forming the second water treatment flow channel 10012 that is respectively connected to the second opening 1102 and the third opening 1103. The eighth channel 108 is respectively connected to the fourth channel 104 and the fifth channel 105, thereby forming the third water treatment flow channel 10013 that is respectively connected to the fourth opening 1104 and the first fluid opening 1105. As shown in the attached drawings Figures 7A to 7I , Figure 10A , Figure 10B and Figure 16A shown, when the flat valve 1 is in the water treatment working position, the drain channel 109 is blocked by the third fluid control surface 1223 of the movable valve plate 122. Correspondingly, when the control valve 1 is in the water treatment working position, under the action of water pressure, raw water flows in from the second fluid opening 1106 of the valve body 10 of the control valve 1, flows into the first channel 101 through the sixth channel 106 and flows towards the first opening 1101 of the first valve body part 11, and further flows into the first water treatment device 51 from the first water inlet 511. The primary treated water after being treated by the first water treatment device 51 flows out from the first water outlet 512 under the action of water pressure and further flows through the second opening 1102, the second channel 102, the seventh channel 107, the third channel 103, and the third opening 1103 of the flat valve 1 towards the second water inlet 521 and flows into the second water treatment device 52. Then, under the action of water pressure, it is further treated by the second water treatment device 52. The secondary treated water generated flows out from the second water outlet 522 under the action of water pressure and flows into the fourth opening 1104, and then flows towards the first fluid opening 1105 through the fourth channel 104, the eighth channel 108, and the fifth channel 105.

[0102] In addition, when the flat valve 1 is in the water treatment working position, the seventh channel 107 is respectively communicated with the second channel 102 and the third channel 103. That is to say, when the flat valve 1 is in the water treatment working position, the second opening 1102 and the third opening 1103 are communicated through the second water treatment flow channel 10012. Since the second opening 1102 is communicated with the first water outlet 512 of the first water treatment device 51, and the third opening 1103 is communicated with the second water inlet 521 of the second water treatment device 52, at this time, the first water outlet 512 of the first water treatment device 51 and the second water inlet 521 of the second water treatment device 52 form a series structure, so that when the flat valve 1 is in the water treatment working position, the first water treatment device 51 and the second water treatment device 52 form a two-stage series structure. The first water treatment material 515 of the first water treatment device 51 and the second water treatment material 525 of the second water treatment device 52 will sequentially treat the raw water entering the second fluid opening 1106 of the flat valve 1, and the treated water flows out and is provided from the first fluid opening 1105.

[0103] As shown in the attached drawings Figure 10C , Figure 12 and Figure 16B shown, the moving valve plate 122 of the flat valve 1 of the water treatment machine according to the embodiment of the present invention can rotate relative to the first fixed valve plate 121 and the second fixed valve plate 123, so that the flat valve 1 further has a first backwashing working position. When the flat valve 1 is in the first backwashing working position, the sixth channel 106 of the flat valve 1 is communicated with the second channel 102, so as to form a first backwashing flow channel 10021 that is respectively communicated with the second fluid opening 1106 and the second opening 1102. The eighth channel 108 is respectively communicated with the first channel 101 and the sewage discharge channel 109, so as to form a second backwashing flow channel 10022 that is respectively communicated with the first opening 1101 and the sewage discharge opening 1109. As shown in the attached drawings Figures 7A to 7I , Figure 10C , Figure 10D and Figure 16BAs shown, when the flat valve 1 is in the first backwashing working position, the seventh channel 107 communicates with the fourth channel 104, the third channel 103 is blocked by the second fluid control surface 1220 of the movable valve piece 122, and the fifth channel 105 is blocked by the third fluid control surface 1223 of the movable valve piece 122. It can be understood that when the flat valve 1 is in the first backwashing working position, although the seventh channel 107 communicates with the fourth channel 104, the seventh channel 107 is a conducting blind hole, so that the fourth channel 104 is blocked by the movable valve piece 122. Also, since the third channel 103 is blocked by the second fluid control surface 1220 of the movable valve piece 122, the flow of water through the third opening 1103 and the fourth opening 1104 of the flat valve 1 is prevented, and the flow of water in the second water treatment device 52 is blocked. Therefore, when the flat valve 1 is in the first backwashing working position, the first water treatment device 51 of the water treatment machine of the present utility model is separately backwashed in the reverse direction. Correspondingly, when the control valve 1 is in the first backwashing working position, under the action of water pressure, raw water flows into the second fluid opening 1106 of the valve body 10 of the control valve 1, flows through the sixth channel 106 into the second channel 102 and flows to the second opening 1102 of the first valve body portion 11, and further flows into the first water treatment device 51 from the first water outlet 512. The sewage after backwashing the first water treatment device 51 flows out from the first water inlet 511, and then is discharged through the first opening 1101, the first channel 101, the eighth channel 108, the sewage discharge channel 109 and the sewage discharge opening 1109. In addition, when the flat valve 1 is in the first backwashing working position, the fifth channel 105 is blocked by the third fluid control surface 1223 of the movable valve piece 122. Since the fifth channel 105 communicates with the first fluid opening 1105, no untreated water flows out of the first fluid opening 1105.

[0104] As shown in the attached drawings Figure 10E 、 Figure 10F 、 Figure 13 and Figure 16C shown, the movable valve piece 122 of the flat valve 1 of the water treatment machine according to the embodiment of the present utility model can rotate relative to the first fixed valve piece 121 and the second fixed valve piece 123, so that the flat valve 1 further has a second backwashing working position. When the flat valve 1 is in the second backwashing working position, the sixth channel 106 of the flat valve 1 communicates with the fourth channel 104, thereby forming a third backwashing flow path 10023 that communicates with the second fluid opening 1106 and the fourth opening 1104 respectively. The eighth channel 108 communicates with the third channel 103 and the sewage discharge channel 109 respectively, thereby forming a fourth backwashing flow path 10024 that communicates with the third opening 1103 and the sewage discharge opening 1109 respectively. As shown in the attached drawings Figures 7A to 7I 、Figure 10E , Figure 10F and Figure 16C As shown in Figure 10E , Figure 10F , and Figure 16C , when the flat valve 1 is in the second backwashing working position, the seventh channel 107 is in communication with the first channel 101, the second channel 102 is blocked by the second fluid control surface 1220 of the movable valve plate 122, and the fifth channel 105 is blocked by the third fluid control surface 1223 of the movable valve plate 122. It can be understood that when the flat valve 1 is in the second backwashing working position, although the seventh channel 107 is in communication with the first channel 101, the seventh channel 107 is a conducting blind hole, so that the first channel 101 is blocked by the movable valve plate 122. Also, since the second channel 102 is blocked by the second fluid control surface 1220 of the movable valve plate 122, the flow of water through the first opening 1101 and the second opening 1102 of the flat valve 1 is prevented, and the flow of water in the first water treatment device 51 is blocked. Therefore, when the flat valve 1 is in the second backwashing working position, the second water treatment device 52 of the water treatment machine of the present utility model is separately backwashed. Correspondingly, when the control valve 1 is in the second backwashing working position, under the action of water pressure, raw water flows into the control valve 1 from the second fluid opening 1106 of the valve body 10, flows through the sixth channel 106 into the fourth channel 104 and flows towards the fourth opening 1104 of the first valve body part 11, and further flows into the second water treatment device 52 from the second water outlet 522. The sewage after backwashing the second water treatment device 52 flows out from the second water inlet 521, and then is discharged through the third opening 1103, the third channel 103, the eighth channel 108, the sewage discharge channel 109, and the sewage discharge opening 1109. In addition, when the flat valve 1 is in the second backwashing working position, the fifth channel 105 is blocked by the third fluid control surface 1223 of the movable valve plate 122. Since the fifth channel 105 is in communication with the first fluid opening 1105, no untreated water flows out of the first fluid opening 1105.

[0105] As shown in the attached drawings Figure 10G , Figure 10H , Figure 14 and Figure 16DAs shown, the movable valve plate 122 of the flat valve 1 of the water treatment machine according to the embodiment of the present utility model can rotate relative to the first fixed valve plate 121 and the second fixed valve plate 123, so that the flat valve 1 further has a first normal flushing working position. When the flat valve 1 is in the first normal flushing working position, the sixth channel 106 of the flat valve 1 is connected to the first channel 101, thereby forming a first normal flushing flow channel 10031 that is respectively connected to the second fluid opening 1106 and the first opening 1101. The eighth channel 108 is respectively connected to the second channel 102 and the sewage discharge channel 109, thereby forming a second normal flushing flow channel 10032 that is respectively connected to the second opening 1102 and the sewage discharge opening 1109. As shown in the attached drawings Figures 7A to 7I 、 Figure 10G 、 Figure 10H and Figure 16D As shown, when the flat valve 1 is in the first normal flushing working position, the seventh channel 107 is connected to the first channel 101. The third channel 103 and the fourth channel 104 are respectively blocked by the second fluid control surface 1220 of the movable valve plate 122, and the fifth channel 105 is blocked by the third fluid control surface 1223 of the movable valve plate 122. It can be understood that when the flat valve 1 is in the first normal flushing working position, although the seventh channel 107 is connected to the first channel 101, the seventh channel 107 is a conducting blind hole. Therefore, water does not flow through the flow channel formed by them. Since the third channel 103 and the fourth channel 104 are respectively blocked by the second fluid control surface 1220 of the movable valve plate 122, the water flow through the third opening 1103 and the fourth opening 1104 of the flat valve 1 is blocked, and the water flow in the second water treatment device 52 is blocked. Therefore, when the flat valve 1 is in the first normal flushing working position, the first water treatment device 51 of the water treatment machine of the present utility model is separately and positively flushed. Correspondingly, when the control valve 1 is in the first normal flushing working position, under the action of water pressure, raw water flows in from the second fluid opening 1106 of the valve body 10 of the control valve 1, flows into the first channel 101 through the sixth channel 106 and flows to the first opening 1101 of the first valve body part 11, and further flows into the first water treatment device 51 from the first water inlet 511. The sewage after positively flushing the first water treatment device 51 flows out from the first water outlet 512, and then is discharged through the second opening 1102, the second channel 102, the eighth channel 108, the sewage discharge channel 109 and the sewage discharge opening 1109. In addition, when the flat valve 1 is in the first normal flushing working position, the fifth channel 105 is blocked by the third fluid control surface 1223 of the movable valve plate 122. Since the fifth channel 105 is connected to the first fluid opening 1105, no untreated water flows out of the first fluid opening 1105.

[0106] As shown in the attached drawingsFigure 10I , Figure 10J , Figure 15 and Figure 16E As shown in Figures 7A to 7I , Figure 10I , Figure 10J and Figure 16E , the movable valve plate 122 of the flat valve 1 of the water treatment machine according to the embodiment of the present utility model can rotate relative to the first fixed valve plate 121 and the second fixed valve plate 123, so that the flat valve 1 further has a second normal flushing working position. When the flat valve 1 is in the second normal flushing working position, the sixth channel 106 of the flat valve 1 is connected to the third channel 103, so as to form a third normal flushing flow path 10033 that is respectively connected to the second fluid opening 1106 and the third opening 1103. The eighth channel 108 is respectively connected to the fourth channel 104 and the sewage discharge channel 109, so as to form a fourth normal flushing flow path 10034 that is respectively connected to the fourth opening 1104 and the sewage discharge opening 1109. As shown in the attached drawings Figures 7A to 7I , Figure 10I , Figure 10J and Figure 16EAs shown, when the flat valve 1 is in the second normal flushing working position, the seventh channel 107 is communicated with the second channel 102, the first channel 101 is blocked by the second fluid control surface 1220 of the moving valve piece 122, and the fifth channel 105 is blocked by the third fluid control surface 1223 of the moving valve piece 122. It can be understood that when the flat valve 1 is in the second normal flushing working position, although the seventh channel 107 is communicated with the second channel 102, the seventh channel 107 is a conducting blind hole, so that the second channel 102 is blocked by the moving valve piece 122. Also, since the first channel 101 is blocked by the second fluid control surface 1220 of the moving valve piece 122, the flow of water through the first opening 1101 and the second opening 1102 of the flat valve 1 is blocked, and the flow of water in the first water treatment device 51 is blocked. Therefore, when the flat valve 1 is in the second normal flushing working position, the second water treatment device 52 of the water treatment machine of the present utility model is separately flushed forward. Correspondingly, when the control valve 1 is in the second normal flushing working position, under the action of water pressure, raw water flows into the control valve 1 from the second fluid opening 1106 of the valve body 10 of the control valve 1, flows through the sixth channel 106 into the third channel 103 and flows to the third opening 1103 of the first valve body part 11, and further flows into the second water treatment device 52 from the second water inlet 521. The sewage after the forward flushing of the second water treatment device 52 flows out from the second water outlet 522, and then is discharged through the fourth opening 1104, the fourth channel 104, the eighth channel 108, the sewage discharge channel 109 and the sewage discharge opening 1109. In addition, when the flat valve 1 is in the second normal flushing working position, the fifth channel 105 is blocked by the third fluid control surface 1223 of the moving valve piece 122. Since the fifth channel 105 is communicated with the first fluid opening 1105, no untreated water flows out of the first fluid opening 1105.

[0107] It should be noted that the traditional flat valve adopts a valve core structure with a single movable valve piece and a single fixed valve piece. The movable valve piece often requires a water supply conduction blind hole (except for the conduction blind hole for conducting the second opening and the third opening) to guide the water flow to the water outlet. When the water flow flows in the water supply diversion blind hole, the flow direction changes by 360 degrees, which will cause the water flow to be subjected to greater resistance and result in a large loss of the kinetic energy of the water flow, so that the water flow rate is significantly reduced. The flat valve 1 of the water treatment machine of the present utility model adopts a three-valve piece structure. The water flow flowing to the water outlet flows upward from the lower valve piece (the first fixed valve piece 121), and the water outlet is on the upper valve piece (the second fixed valve piece 123). The change in the water flow direction is relatively small (roughly). During the process of changing the water flow direction, the resistance received by the water flow is also relatively small, and the loss of the water flow rate is also significantly reduced. Further, the channels for controlling the water flow direction provided on the fixed valve piece of the existing flat valve with a single fixed valve piece can only be arranged on a single fixed valve piece. In order to realize the corresponding functions of the flat valve, the channels of the fixed valve piece are arranged in two circles (except for the central part). The water outlet channels are often arranged in the outer circle. Correspondingly, the channels of the movable valve piece are also arranged in two circles, resulting in too low an effective flow channel area accounting for the total flow control area of the entire fixed valve piece and the movable valve piece. In order to ensure the water flow rate, the diameters of the fixed valve piece and the movable valve piece of the flat valve are very large and the volume of the entire flat valve is very large. The larger the diameter of the flat valve, the more difficult it is to ensure the stability of the movable valve piece during rotation. In order to ensure the stability of the entire flat valve, the cross-sectional area of the flat valve becomes larger, and the valve body requires a thicker wall thickness. Since the diameter of the movable valve piece increases correspondingly, the thickness of the movable valve piece also needs to be increased accordingly. This will not only increase the manufacturing cost of the flat valve, but also make the entire flat valve heavier and less easy to operate. The first channel 101, the second channel 102, the third channel 103, the fourth channel 104, the fifth channel 105 and the sewage discharge channel 109 of the flat valve 1 of the water treatment machine of the present utility model are respectively arranged on the first fixed valve piece 121 and the second fixed valve piece 123, thereby allowing the space occupied by each channel arranged on the fixed valve piece to become larger and increasing the water flow rate. In other words, the first channel 101, the second channel 102, the third channel 103, the fourth channel 104, the fifth channel 105 and the sewage discharge channel 109 of the flat valve 1 of the water treatment machine of the present utility model are respectively arranged on the first fixed valve piece 121 and the second fixed valve piece 123 and are arranged in a single circle. The sixth channel 106, the seventh channel 107 and the eighth channel 108 are respectively arranged on the movable valve piece 122 and are also arranged in a single circle, thereby allowing the space occupied by each channel arranged on the fixed valve piece and the movable valve piece to become larger and increasing the water flow rate.In other words, the first channel 101, the second channel 102, the third channel 103, the fourth channel 104, the fifth channel 105, and the sewage discharge channel 109 of the plane valve 1 of the water treatment machine of the present utility model are respectively arranged in a single circle on the first fixed valve plate 121 and the second fixed valve plate 123, and the sixth channel 106, the seventh channel 107, and the eighth channel 108 are respectively arranged in a single circle on the movable valve plate 122, which can significantly reduce the diameter of the fixed and movable valve plates of the plane valve (or the inner diameter of the valve cavity), the thickness of the movable valve plate, and the wall thickness of the valve body, thereby reducing the manufacturing cost of the plane valve and making the entire plane valve structure lighter and easier to operate.

[0108] In summary, the plane valve 1 of the water treatment machine according to the embodiment of the present utility model can not only control the generation of a larger flow of treated water at the water treatment working position of the water treatment machine, but also when at the first backwashing working position, the second backwashing working position, the first flushing working position, and the second flushing working position, the first fluid opening 1105 does not supply raw water. Especially during the switching process of the working positions, the fifth channel 105 is always blocked by the third fluid control surface 1223 of the movable valve plate 122, so that the first fluid opening 1105 also does not supply raw water. This makes the plane valve 1 of the water treatment machine according to the embodiment of the present utility model suitable for use in industrial water treatment, because in industrial water treatment, during the flushing working positions and valve position switching other than the water treatment working position, the first fluid opening 1105 cannot supply raw water, because the untreated raw water is likely to affect the subsequent water treatment equipment.

[0109] As shown in the attached drawings Figures 7A to 9DAs shown, the first fluid control surface 1210 of the first fixed valve piece 121 of the flat valve 1 of the water treatment machine according to the embodiment of the present utility model has a central portion 12101 and an edge portion 12102 shown by the dotted line in the figure. The central portion 12101 and the edge portion 12102 are provided at the top end portion 1214 of the first fixed valve piece 121, and the edge portion 12102 (or the portion outside the central portion 12101) of the first fluid control surface 1210 is equally divided into a first part 1201, a second part 1202, a third part 1203, a fourth part 1204, a fifth part 1205, a sixth part 1206, a seventh part 1207, and an eighth part 1208 shown by the dotted line; the second fluid control surface 1220 of the movable valve piece 122 of the flat valve 1 has a lower end central region 12201 and a lower end edge region 12202 extending outward from the lower end central region 12201 shown by the dotted line in the figure. The lower end central region 12201 and the lower end edge region 12202 are provided at the lower end portion 1221 of the movable valve piece 122, and the lower end edge region 12202 (the portion outside the lower end central region 12201) of the second fluid control surface 1220 is equally divided into a first lower end region 2001, a second lower end region 2002, a third lower end region 2003, a fourth lower end region 2004, a fifth lower end region 2005, a sixth lower end region 2006, a seventh lower end region 2007, and an eighth lower end region 2008 shown by the dotted line; the third fluid control surface 1223 of the movable valve piece 122 of the flat valve 1 has an upper end central region 12231 and an upper end edge region 12232 extending outward from the upper end central region 12231 shown by the dotted line in the figure. The upper end central region 12231 and the upper end edge region 12232 are provided at the upper end portion 1222 of the movable valve piece 122, and the upper end edge region 12232 (the portion outside the upper end central region 12231) of the third fluid control surface 1223 is equally divided into a first upper end region 3001, a second upper end region 3002, a third upper end region 3003, a fourth upper end region 3004, a fifth upper end region 3005, a sixth upper end region 3006, a seventh upper end region 3007, and an eighth upper end region 3008 shown by the dotted line;Wherein the first lower end region 2001 faces the first upper end region 3001, the second lower end region 2002 faces the second upper end region 3002, the third lower end region 2003 faces the third upper end region 3003, the fourth lower end region 2004 faces the fourth upper end region 3004, the fifth lower end region 2005 faces the fifth upper end region 3005, the sixth lower end region 2006 faces the sixth upper end region 3006, the seventh lower end region 2007 faces the seventh upper end region 3007, and the eighth lower end region 2008 faces the eighth upper end region 3008;The fourth fluid control surface 1230 of the second fixed valve plate 123 of the flat valve 1 has a central partition 12301 shown by a dotted line in the figure and an edge partition 12302 extending outward from the central partition 12301. The central partition 12301 and the edge partition 12302 are provided at the bottom end portion 1231 of the second fixed valve plate 123. The edge partition 12302 (the part outside the central partition 12301) of the fourth fluid control surface 1230 is equally divided into a first partition 4001, a second partition 4002, a third partition 4003, a fourth partition 4004, a fifth partition 4005, a sixth partition 4006, a seventh partition 4007 and an eighth partition 4008 shown by dotted lines. The first channel 101 extends downward from the first part 1201, the second part 1202 and the third part 1203 of the first fluid control surface 1210 of the first fixed valve plate 121. The fourth channel 104 extends downward from the fourth part 1204 and the fifth part 1205 of the first fluid control surface 1210 of the first fixed valve plate 121. The second channel 102 extends downward from the sixth part 1206 and the seventh part 1207 of the first fluid control surface 1210 of the first fixed valve plate 121. The third channel 103 extends downward from the eighth part 1208 of the first fluid control surface 1210 of the first fixed valve plate 121. The sixth channel 106 extends upward and outward from the first lower end region 2001 of the second fluid control surface 1220 of the movable valve plate 122. The eighth channel 108 extends from the fifth lower end region 2005 of the second fluid control surface 1220 of the movable valve plate 122 to the fifth upper end region 3005 of the third fluid control surface 1223 of the movable valve plate 122. The seventh channel 107 extends upward from the seventh lower end region 2007 and the eighth lower end region 2008 of the second fluid control surface 1220 of the movable valve plate 122. The sewage discharge channel 109 extends upward from the first partition 4001, the second partition 4002, the third partition 4003, the fourth partition 4004, the sixth partition 4006, the seventh partition 4007 and the eighth partition 4008 of the fourth fluid control surface 1230 of the second fixed valve plate 123. The fifth channel 105 extends upward from the fifth partition 4005 of the fourth fluid control surface 1230 of the second fixed valve plate 123.;

[0110] As shown in the attached drawings Figures 7A to 9DAs shown, preferably, the edge portion 12102 of the first fluid control surface 1210 of the first fixed valve plate 121 of the flat valve 1 is equally divided clockwise into the first part 1201, the second part 1202, the third part 1203, the fourth part 1204, the fifth part 1205, the sixth part 1206, the seventh part 1207 and the eighth part 1208. The lower end edge region 12202 of the second fluid control surface 1220 of the moving valve plate 122 of the flat valve 1 is equally divided clockwise into the first lower end region 2001, the second lower end region 2002, the third lower end region 2003, the fourth lower end region 2004, the fifth lower end region 2005, the sixth lower end region 2006, the seventh lower end region 2007 and the eighth lower end region 2008. The upper end edge region 12232 of the third fluid control surface 1223 of the moving valve plate 122 of the flat valve 1 is equally divided clockwise into the first upper end region 3001, the second upper end region 3002, the third upper end region 3003, the fourth upper end region 3004, the fifth upper end region 3005, the sixth upper end region 3006, the seventh upper end region 3007 and the eighth upper end region 3008. The edge partition 12302 of the fourth fluid control surface 1230 of the second fixed valve plate 123 of the flat valve 1 is equally divided clockwise into the first partition 4001, the second partition 4002, the third partition 4003, the fourth partition 4004, the fifth partition 4005, the sixth partition 4006, the seventh partition 4007 and the eighth partition 4008.Optionally, the edge portion 12102 of the first fluid control surface 1210 of the first fixed valve plate 121 of the flat valve 1 is equally divided counterclockwise into the first portion 1201, the second portion 1202, the third portion 1203, the fourth portion 1204, the fifth portion 1205, the sixth portion 1206, the seventh portion 1207 and the eighth portion 1208. The lower end edge region 12202 of the second fluid control surface 1220 of the movable valve plate 122 of the flat valve 1 is equally divided counterclockwise into the first lower end region 2001, the second lower end region 2002, the third lower end region 2003, the fourth lower end region 2004, the fifth lower end region 2005, the sixth lower end region 2006, the seventh lower end region 2007 and the eighth lower end region 2008. The upper end edge region 12232 of the third fluid control surface 1223 of the movable valve plate 122 of the flat valve 1 is equally divided counterclockwise into the first upper end region 3001, the second upper end region 3002, the third upper end region 3003, the fourth upper end region 3004, the fifth upper end region 3005, the sixth upper end region 3006, the seventh upper end region 3007 and the eighth upper end region 3008. The edge partition 12302 of the fourth fluid control surface 1230 of the second fixed valve plate 123 of the flat valve 1 is equally divided counterclockwise into the first partition 4001, the second partition 4002, the third partition 4003, the fourth partition 4004, the fifth partition 4005, the sixth partition 4006, the seventh partition 4007 and the eighth partition 4008. In other words, the first fluid control surface 1210 of the first fixed valve plate 121 of the flat valve 1 forms eight equal parts, the second fluid control surface 1220 of the movable valve plate 122 of the flat valve 1 forms eight equal parts, the third fluid control surface 1223 of the movable valve plate 122 of the flat valve 1 forms eight equal parts, and the fourth fluid control surface 1230 of the second fixed valve plate 123 of the flat valve 1 forms eight equal parts.It can be understood that the second fixed valve plate 123 of the flat valve 1 remains stationary relative to the first fixed valve plate 121. The first partition 4001 of the fourth fluid control surface 1230 of the second fixed valve plate 123 faces the first part 1201 of the first fluid control surface 1210 of the first fixed valve plate 121; the second partition 4002 of the fourth fluid control surface 1230 of the second fixed valve plate 123 faces the second part 1202 of the first fluid control surface 1210 of the first fixed valve plate 121; the third partition 4003 of the fourth fluid control surface 1230 of the second fixed valve plate 123 faces the third part 1203 of the first fluid control surface 1210 of the first fixed valve plate 121; the fourth partition 4004 of the fourth fluid control surface 1230 of the second fixed valve plate 123 faces the fourth part 1204 of the first fluid control surface 1210 of the first fixed valve plate 121; the fifth partition 4005 of the fourth fluid control surface 1230 of the second fixed valve plate 123 faces the fifth part 1205 of the first fluid control surface 1210 of the first fixed valve plate 121; the sixth partition 4006 of the fourth fluid control surface 1230 of the second fixed valve plate 123 faces the sixth part 1206 of the first fluid control surface 1210 of the first fixed valve plate 121; the seventh partition 4007 of the fourth fluid control surface 1230 of the second fixed valve plate 123 faces the seventh part 1207 of the first fluid control surface 1210 of the first fixed valve plate 121; the eighth partition 4008 of the fourth fluid control surface 1230 of the second fixed valve plate 123 faces the eighth part 1208 of the first fluid control surface 1210 of the first fixed valve plate 121.

[0111] As shown in the accompanying drawings Figures 7A to 9D 、 Figure 10A 、 Figure 10B and Figure 16AAs shown, when the movable valve piece 122 of the flat valve 1 is rotated such that the first equal division (the first lower end region 2001) of the second fluid control surface 1220 of the movable valve piece 122 faces the first equal division (the first part 1201) of the first fluid control surface 1210 of the first fixed valve piece 121, the fifth equal division (the fifth lower end region 2005) of the second fluid control surface 1220 of the movable valve piece 122 of the flat valve 1 and the fifth equal division (the fifth upper end region 3005) of the third fluid control surface 1223 respectively face the fifth equal division (the fifth part 1205) of the first fluid control surface 1210 of the first fixed valve piece 121 and the fifth equal division (the fifth partition 4005) of the fourth fluid control surface 1230 of the second fixed valve piece 123. The seventh and eighth equal divisions (the seventh lower end region 2007 and the eighth lower end region 2008) of the second fluid control surface 1220 of the movable valve piece 122 of the flat valve 1 respectively face the seventh and eighth equal divisions (the seventh part 1207 and the eighth part 1208) of the first fluid control surface 1210 of the first fixed valve piece 121, so that the sixth channel 106 of the flat valve 1 is in communication with the first channel 101, the eighth channel 108 is respectively in communication with the fourth channel 104 and the fifth channel 105, the seventh channel 107 is respectively in communication with the second channel 102 and the third channel 103, and the sewage discharge channel 109 is blocked by the third fluid control surface 1223 of the movable valve piece 122, allowing raw water to flow in from the second fluid opening 1106 of the valve body 10, flow through the sixth channel 106 and the first channel 101 to the first opening 1101, further flow into the first water treatment device 51 from the first water inlet 511, the primary treated water after being treated by the first water treatment device 51 flows out from the first water outlet 512 and into the second opening 1102, then flows into the third opening 1103 through the second channel 102, the seventh channel 107, and the third channel 103, further flows into the second water treatment device 52 from the second water inlet 521, and the secondary treated water after being treated by the second water treatment device 52 flows out from the second water outlet 522 and into the fourth opening 1104, then flows out through the fourth channel 104, the eighth channel 108, the fifth channel 105 and the first fluid opening 1105 and is provided to the user. Accordingly, at this time, the water treatment machine is in the water treatment working state.

[0112] As shown in the attached drawings Figures 7A to 9D , Figure 10C , Figure 10D and Figure 16BAs shown, when the moving valve plate 122 of the flat valve 1 is rotated such that the first equal division (the first lower end region 2001) of the second fluid control surface 1220 of the moving valve plate 122 faces the sixth equal division (the sixth part 1206) of the first fluid control surface 1210 of the first fixed valve plate 121, the fifth equal division (the fifth lower end region 2005) of the second fluid control surface 1220 of the moving valve plate 122 of the flat valve 1 and the fifth equal division (the fifth upper end region 3005) of the third fluid control surface 1223 respectively face the second equal division (the second part 1202) of the first fluid control surface 1210 of the first fixed valve plate 121 and the second equal division (the second partition 4002) of the fourth fluid control surface 1230 of the second fixed valve plate 123. The seventh and eighth equal divisions (the seventh lower end region 2007 and the eighth lower end region 2008) of the second fluid control surface 1220 of the moving valve plate 122 of the flat valve 1 respectively face the fourth and fifth equal divisions (the fourth part 1204 and the fifth part 1205) of the first fluid control surface 1210 of the first fixed valve plate 121, so that the sixth channel 106 of the flat valve 1 is connected to the second channel 102, the eighth channel 108 is respectively connected to the first channel 101 and the sewage discharge channel 109, the seventh channel 107 is connected to the fourth channel 104, the third channel 103 is blocked by the second fluid control surface 1220 of the moving valve plate 122, and the fifth channel 105 is blocked by the third fluid control surface 1223 of the moving valve plate 122, to allow raw water to flow in from the second fluid opening 1106 of the valve body 10, flow through the sixth channel 106 and the second channel 102 to the second opening 1102, further flow into the first water treatment device 51 from the first water outlet 512, the sewage generated after backwashing the first water treatment device 51 flows out from the first water inlet 511, and then is discharged through the first opening 1101, the first channel 101, the eighth channel 108, the sewage discharge channel 109 and the sewage discharge opening 1109. Correspondingly, at this time, the water treatment machine is in the first backwashing working state.

[0113] As shown in the attached drawings Figures 7A to 9D , Figure 10E , Figure 10F and Figure 16CAs shown, when the movable valve plate 122 of the flat valve 1 is rotated until the first equal division (the first lower end region 2001) of the second fluid control surface 1220 of the movable valve plate 122 faces the fourth equal division (the fourth part 1204) of the first fluid control surface 1210 of the first fixed valve plate 121, the fifth equal division (the fifth lower end region 2005) of the second fluid control surface 1220 of the movable valve plate 122 of the flat valve 1 and the fifth equal division (the fifth upper end region 3005) of the third fluid control surface 1223 respectively face the eighth equal division (the eighth part 1208) of the first fluid control surface 1210 of the first fixed valve plate 121 and the eighth equal division (the eighth partition 4008) of the fourth fluid control surface 1230 of the second fixed valve plate 123. The seventh and eighth equal divisions (the seventh lower end region 2007 and the eighth lower end region 2008) of the second fluid control surface 1220 of the movable valve plate 122 of the flat valve 1 respectively face the second and third equal divisions (the second part 1202 and the third part 1203) of the first fluid control surface 1210 of the first fixed valve plate 121, so that the sixth channel 106 of the flat valve 1 is communicated with the fourth channel 104, the eighth channel 108 is respectively communicated with the third channel 103 and the sewage discharge channel 109, the seventh channel 107 is communicated with the first channel 101, the second channel 102 is blocked by the second fluid control surface 1220 of the movable valve plate 122, and the fifth channel 105 is blocked by the third fluid control surface 1223 of the movable valve plate 122, to allow raw water to flow into the valve body 10 from the second fluid opening 1106, flow through the sixth channel 106 and the fourth channel 104 to the fourth opening 1104, further flow into the second water treatment device 52 from the second water outlet 522, and the sewage generated after reverse flushing the second water treatment device 52 flows out from the second water inlet 521, and then is discharged through the third opening 1103, the third channel 103, the eighth channel 108, the sewage discharge channel 109 and the sewage discharge opening 1109. Correspondingly, at this time, the water treatment machine is in the second backwashing working state.

[0114] As shown in the attached drawings Figures 7A to 9D 、 Figure 10G 、 Figure 10H and Figure 16DAs shown, when the movable valve plate 122 of the flat valve 1 is rotated until the first equal division (the first lower end region 2001) of the second fluid control surface 1220 of the movable valve plate 122 faces the third equal division (the third part 1203) of the first fluid control surface 1210 of the first fixed valve plate 121, the fifth equal division (the fifth lower end region 2005) of the second fluid control surface 1220 of the movable valve plate 122 of the flat valve 1 and the fifth equal division (the fifth upper end region 3005) of the third fluid control surface 1223 respectively face the seventh equal division (the seventh part 1207) of the first fluid control surface 1210 of the first fixed valve plate 121 and the seventh equal division (the seventh section 4007) of the fourth fluid control surface 1230 of the second fixed valve plate 123. The seventh and eighth equal divisions (the seventh lower end region 2007 and the eighth lower end region 2008) of the second fluid control surface 1220 of the movable valve plate 122 of the flat valve 1 respectively face the first and second equal divisions (the first part 1201 and the second part 1202) of the first fluid control surface 1210 of the first fixed valve plate 121, so that the sixth channel 106 of the flat valve 1 is communicated with the first channel 101, the eighth channel 108 is respectively communicated with the second channel 102 and the sewage discharge channel 109, the seventh channel 107 is communicated with the first channel 101, the third channel 103 and the fourth channel 104 are respectively blocked by the second fluid control surface 1220 of the movable valve plate 122, and the fifth channel 105 is blocked by the third fluid control surface 1223 of the movable valve plate 122, allowing raw water to flow in from the second fluid opening 1106 of the valve body 10, flowing through the sixth channel 106 and the first channel 101 to the first opening 1101, further flowing into the first water treatment device 51 from the first water inlet 511, the sewage after positively flushing the first water treatment device 51 flowing out from the first water outlet 512, and then being discharged through the second opening 1102, the second channel 102, the eighth channel 108, the sewage discharge channel 109 and the sewage discharge opening 1109. Correspondingly, at this time, the water treatment machine is in the first positive flushing working state.

[0115] As shown in the attached drawings Figures 7A to 9D , Figure 10I , Figure 10J and Figure 16EAs shown, when the moving valve plate 122 of the flat valve 1 is rotated until the first equal division (the first lower end region 2001) of the second fluid control surface 1220 of the moving valve plate 122 faces the eighth equal division (the eighth part 1208) of the first fluid control surface 1210 of the first fixed valve plate 121, the fifth equal division (the fifth lower end region 2005) of the second fluid control surface 1220 of the moving valve plate 122 of the flat valve 1 and the fifth equal division (the fifth upper end region 3005) of the third fluid control surface 1223 respectively face the fourth equal division (the fourth part 1204) of the first fluid control surface 1210 of the first fixed valve plate 121 and the fourth equal division (the fourth partition 4004) of the fourth fluid control surface 1230 of the second fixed valve plate 123. The seventh and eighth equal divisions (the seventh lower end region 2007 and the eighth lower end region 2008) of the second fluid control surface 1220 of the moving valve plate 122 of the flat valve 1 respectively face the sixth and seventh equal divisions (the sixth part 1206 and the seventh part 1207) of the first fluid control surface 1210 of the first fixed valve plate 121, so that the sixth channel 106 of the flat valve 1 is communicated with the third channel 103, the eighth channel 108 is respectively communicated with the fourth channel 104 and the sewage discharge channel 109, the seventh channel 107 is communicated with the second channel 102, the first channel 101 is blocked by the second fluid control surface 1220 of the moving valve plate 122, and the fifth channel 105 is blocked by the third fluid control surface 1223 of the moving valve plate 122, allowing raw water to flow in from the second fluid opening 1106 of the valve body 10, flow through the sixth channel 106 and the third channel 103 to the third opening 1103, further flow into the second water treatment device 52 from the second water inlet 521, the sewage after positively flushing the second water treatment device 52 flows out from the second water outlet 522, and then is discharged through the fourth opening 1104, the fourth channel 104, the eighth channel 108, the sewage discharge channel 109 and the sewage discharge opening 1109. Correspondingly, at this time, the water treatment machine is in the second positive flushing working state.

[0116] It can be understood that when the second fluid control surface 1220 and the third fluid control surface 1223 of the movable valve plate 122 are respectively arranged on the first fluid control surface 1210 of the first fixed valve plate 121 and the fourth fluid control surface 1230 of the second fixed valve plate 123, the lower end central region 12201 of the second fluid control surface 1220 of the movable valve plate 122 faces the central part 12101 of the first fluid control surface 1210 of the first fixed valve plate 121, the lower end edge region 12202 of the second fluid control surface 1220 of the movable valve plate 122 faces the edge part 12102 of the first fluid control surface 1210 of the first fixed valve plate 121, the upper end central region 12231 of the third fluid control surface 1223 of the movable valve plate 122 faces the central partition 12301 of the fourth fluid control surface 1230 of the second fixed valve plate 123, and the upper end edge region 12232 of the third fluid control surface 1223 of the movable valve plate 122 faces the edge partition 12302 of the fourth fluid control surface 1230 of the second fixed valve plate 123.

[0117] Optionally, the first fluid control surface 1210 of the first fixed valve plate 121 of the flat valve 1, the fourth fluid control surface 1230 of the second fixed valve plate 123, the second fluid control surface 1220 and the third fluid control surface 1223 of the movable valve plate 122 are all circular. The first channel 101, the fourth channel 104, the second channel 102 and the third channel 103 of the flat valve 1 are all arranged radially on the first fluid control surface 1210 of the first fixed valve plate 121. The sixth channel 106 and the seventh channel 107 of the flat valve 1 are arranged radially on the second fluid control surface 1220 of the movable valve plate 122. The eighth channel 108 of the flat valve 1 is arranged radially on the second fluid control surface 1220 and the third fluid control surface 1223 of the movable valve plate 122. The fifth channel 105 and the sewage discharge channel 109 of the flat valve 1 are all arranged radially on the fourth fluid control surface 1230 of the second fixed valve plate 123.

[0118] Preferably, the first channel 101 of the flat valve 1 extends downward and outward from the first fluid control surface 1210 of the first fixed valve plate 121, the fourth channel 104 extends downward and outward from the first fluid control surface 1210 of the first fixed valve plate 121, the second channel 102 extends downward and outward from the first fluid control surface 1210 of the first fixed valve plate 121, the third channel 103 extends downward and outward from the first fluid control surface 1210 of the first fixed valve plate 121. The fifth channel 105 of the flat valve 1 extends upward and outward from the fourth fluid control surface 1230 of the second fixed valve plate 123, and the sewage discharge channel 109 of the flat valve 1 extends upward and outward from the fourth fluid control surface 1230 of the second fixed valve plate 123.

[0119] As shown in the attached drawings, Figures 6A to 6P the first valve body portion 11 of the flat valve 1 has a first inner wall 111, and the second valve body portion 13 has a second inner wall 131. The first fixed valve plate 121 is adapted to be disposed in the valve cavity 110 with the first fluid control surface 1210 facing upward, the movable valve plate 122 is adapted to be disposed in the valve cavity 110 with the second fluid control surface 1220 facing downward (the third fluid control surface 1223 facing upward), and the second fixed valve plate 123 is adapted to be disposed in the valve cavity 110 with the fourth fluid control surface 1230 facing downward, wherein the valve cavity 110 is always in communication with the sixth passage 106. It should be noted that the first fixed valve plate 121 of the flat valve 1 can be detachably disposed on the first inner wall 111 of the first valve body portion 11, or can be integrally formed with the first inner wall 111 of the first valve body portion 11 of the flat valve 1; the second fixed valve plate 123 of the flat valve 1 can be detachably disposed on the second inner wall 131 of the second valve body portion 13, or can be integrally formed with the second inner wall 131 of the second valve body portion 13 of the flat valve 1. Those skilled in the art can understand that when the first fixed valve plate 121 is detachably disposed in the first valve body portion 11, a fixing mechanism is used between the first fixed valve plate 121 and the first valve body portion 11 to maintain the synchronization between the first fixed valve plate 121 and the first valve body portion 11; when the second fixed valve plate 123 is detachably disposed in the second valve body portion 13, another fixing mechanism is used between the second fixed valve plate 123 and the second valve body portion 13 to maintain the synchronization between the second fixed valve plate 123 and the second valve body portion 13. For example, as shown in the attached drawings Figures 6A to 6PAs shown, the first fixed valve plate 121 has a first braking member 1213 protruding outward from the edge of the first fixed valve plate 121. The first inner wall 111 of the first valve body portion 11 has a first braking portion 1110. The first braking member 1213 of the first fixed valve plate 121 is arranged to be able to engage with the first braking portion 1110 of the first inner wall 111 of the first valve body portion 11, so as to ensure synchronization (or no relative rotation) between the first fixed valve plate 121 and the first valve body portion 11 and ensure that the respective channels provided on the first fixed valve plate 121 communicate with the corresponding openings provided on the first valve body portion 11; the second fixed valve plate 123 has a second braking member 1233 protruding outward from the edge of the second fixed valve plate 123. The second inner wall 131 of the second valve body portion 13 has a second braking portion 1310. The second braking member 1233 of the second fixed valve plate 123 is arranged to be able to engage with the second braking portion 1310 of the second inner wall 131 of the second valve body portion 13, so as to ensure synchronization (or no relative rotation) between the second fixed valve plate 123 and the second valve body portion 13 and ensure that the respective channels provided on the second fixed valve plate 123 communicate with the corresponding openings provided on the second valve body portion 13. It can be understood that when the first fixed valve plate 121 is detachably arranged in the first valve body portion 11, the first fixed valve plate 121 can be manufactured separately. When the second fixed valve plate 123 is detachably arranged in the second valve body portion 13, the second fixed valve plate 123 can be manufactured separately. In other words, at this time, the first fixed valve plate 121 and the second fixed valve plate 123 can be made of wear-resistant materials, so as to improve the service life of the first fixed valve plate 121 and the second fixed valve plate 123 (or the entire flat valve). Preferably, the first fluid control surface 1210 of the first fixed valve plate 121 and the fourth fluid control surface 1230 of the second fixed valve plate 123 are smoothed to reduce their roughness.

[0120] As shown in the attached drawings Figure 5 and Figure 6M shown, the flat valve 1 further includes a driving element 17 extending upward from the movable valve plate 122 and passing through the second fixed valve plate 123. The driving element 17 is arranged to be able to drive the movable valve plate 122 of the flat valve 1 to rotate relative to the first fixed valve plate 121 and the second fixed valve plate 123. It can be understood that the driving element 17 can be any element or component capable of driving the movable valve plate 122 to rotate relative to the first fixed valve plate 121 and the second fixed valve plate 123. For example, the driving element 17 can be a valve stem, a driving gear or a driving gear set. For example, the driving element of the water treatment machine of the present utility model can be a driving shaft, which passes through the central part of the second fixed valve plate 123, and the driving shaft is arranged to be able to drive the movable valve plate 122 to rotate without driving the first fixed valve plate 121 and the second fixed valve plate 123 to rotate.

[0121] As shown in the attached drawings Figures 6C to 6P and Figures 11A to 15 shown, the diameter of the movable valve plate 122 of the flat valve 1 is set slightly smaller than the diameter of the valve cavity 110 of the valve body 10, so that the sixth channel 106 of the flat valve 1 can be kept in communication with the valve cavity 110 of the valve body 10.

[0122] It should be noted that the first, second, third, fourth, fifth, sixth, seventh and / or eighth in this text are only used for naming different components (or elements) of the present utility model and to distinguish between different components, elements and structures of the present utility model, and they do not have the meaning of sequence or quantity in themselves.

[0123] Those skilled in the art should understand that the embodiments of the present utility model described above and shown in the attached drawings are only examples and do not limit the present utility model.

[0124] The object of the present utility model has been fully and effectively achieved. The functions and structural principles of the present utility model have been shown and described in the embodiments. Without departing from the above principles, the embodiments of the present utility model can have any deformation or modification.

Claims

1. A control valve for a water treatment machine, characterized in that, Comprising: A driving element; A valve body; And A valve core. The valve body forms a valve cavity, a first opening, a second opening, a third opening, a fourth opening, a first fluid opening, a second fluid opening, and a sewage discharge opening. The valve core is disposed in the valve cavity. The second fluid opening of the valve body is adapted to communicate with a raw water source. The control valve for the water treatment machine is a planar valve. The valve core further includes a first fixed valve plate, a movable valve plate, and a second fixed valve plate. The driving element is arranged to drive the movable valve plate of the planar valve to rotate relative to the first fixed valve plate and the second fixed valve plate. The first fixed valve plate has a first fluid control surface, the movable valve plate has a second fluid control surface and a third fluid control surface, and the second fixed valve plate has a fourth fluid control surface. The first fixed valve plate, the movable valve plate, and the second fixed valve plate are all disposed in the valve cavity. The second fluid control surface and the third fluid control surface of the movable valve plate are respectively formed on opposite sides of the movable valve plate. The second fluid control surface of the movable valve plate is disposed on the first fluid control surface of the first fixed valve plate, and the fourth fluid control surface of the second fixed valve plate is disposed on the third fluid control surface of the movable valve plate, and the movable valve plate is arranged to be able to rotate relative to the first fixed valve plate and the second fixed valve plate. When the movable valve plate rotates relative to the first fixed valve plate and the second fixed valve plate, so that the planar valve is in a water treatment working position, the valve core of the planar valve forms a first water treatment flow path that respectively communicates with the second fluid opening and the first opening, a second water treatment flow path that respectively communicates with the second opening and the third opening, and a third water treatment flow path that respectively communicates with the fourth opening and the first fluid opening.

2. The control valve for a water treatment machine according to claim 1, characterized in that, When the movable valve plate rotates relative to the first fixed valve plate and the second fixed valve plate, so that the planar valve is in a first backwashing working position, the valve core of the planar valve forms a first backwashing flow path that respectively communicates with the second fluid opening and the second opening, and a second backwashing flow path that respectively communicates with the first opening and the sewage discharge opening.

3. The control valve for a water treatment machine according to claim 2, characterized in that, When the movable valve plate rotates relative to the first fixed valve plate and the second fixed valve plate, so that the planar valve is in a second backwashing working position, the valve core of the planar valve forms a third backwashing flow path that respectively communicates with the second fluid opening and the fourth opening, and a fourth backwashing flow path that respectively communicates with the third opening and the sewage discharge opening.

4. The control valve for a water treatment machine according to claim 3, characterized in that, When the movable valve plate rotates relative to the first fixed valve plate and the second fixed valve plate, so that the planar valve is in a first flushing working position, the valve core of the planar valve forms a first flushing flow path that respectively communicates with the second fluid opening and the first opening, and a second flushing flow path that respectively communicates with the second opening and the sewage discharge opening.

5. The control valve for a water treatment machine according to claim 4, wherein When the movable valve plate rotates relative to the first fixed valve plate and the second fixed valve plate, so that the flat valve is in a second normal flushing working position, a third normal flushing flow channel that is respectively communicated with the second fluid opening and the third opening and a fourth normal flushing flow channel that is respectively communicated with the fourth opening and the sewage discharge opening are formed by the valve core of the flat valve.

6. The control valve for a water treatment machine according to claim 1, characterized in that, The flat valve has a first channel, a second channel, a third channel, a fourth channel, a fifth channel, a sixth channel, a seventh channel, an eighth channel and a sewage discharge channel, wherein the first channel, the second channel, the third channel and the fourth channel are respectively arranged on the first fixed valve plate and respectively extend from the first fluid control surface of the first fixed valve plate; The sixth channel, the seventh channel and the eighth channel are respectively arranged on the movable valve plate, wherein the sixth channel and the seventh channel respectively extend from the second fluid control surface of the movable valve plate, and the eighth channel extends from the second fluid control surface of the movable valve plate to the third fluid control surface; the fifth channel and the sewage discharge channel are respectively arranged on the second fixed valve plate and respectively extend from the fourth fluid control surface of the second fixed valve plate, wherein the first channel is communicated with the first opening, the second channel is communicated with the second opening, the third channel is communicated with the third opening, the fourth channel is communicated with the fourth opening, the fifth channel is communicated with the first fluid opening, the sixth channel is communicated with the second fluid opening, and the sewage discharge channel is communicated with the sewage discharge opening. When the flat valve is in the water treatment working position, the sixth channel of the flat valve is communicated with the first channel, so as to form the first water treatment flow channel that is respectively communicated with the second fluid opening and the first opening, the seventh channel is respectively communicated with the second channel and the third channel, so as to form the second water treatment flow channel that is respectively communicated with the second opening and the third opening, and the eighth channel is respectively communicated with the fourth channel and the fifth channel, so as to form the third water treatment flow channel that is respectively communicated with the fourth opening and the first fluid opening.

7. The control valve for a water treatment machine according to claim 6, characterized in that, When the movable valve plate rotates relative to the first fixed valve plate and the second fixed valve plate, so that the flat valve is in a first backwashing working position, the sixth channel of the flat valve is communicated with the second channel, so as to form a first backwashing flow channel that is respectively communicated with the second fluid opening and the second opening, and the eighth channel is respectively communicated with the first channel and the sewage discharge channel, so as to form a second backwashing flow channel that is respectively communicated with the first opening and the sewage discharge opening.

8. The control valve for a water treatment machine according to claim 7, wherein, When the movable valve plate rotates relative to the first fixed valve plate and the second fixed valve plate, so that the flat valve is in a second backwashing working position, the sixth channel of the flat valve is communicated with the fourth channel, so as to form a third backwashing flow channel that is respectively communicated with the second fluid opening and the fourth opening, and the eighth channel is respectively communicated with the third channel and the sewage discharge channel, so as to form a fourth backwashing flow channel that is respectively communicated with the third opening and the sewage discharge opening.

9. The control valve for a water treatment machine according to claim 8, wherein When the movable valve plate rotates relative to the first fixed valve plate and the second fixed valve plate, so that the flat valve is in a first normal flushing working position, the sixth channel of the flat valve is communicated with the first channel, thereby forming a first normal flushing flow channel respectively communicated with the second fluid opening and the first opening, and the eighth channel is respectively communicated with the second channel and the sewage discharge channel, thereby forming a second normal flushing flow channel respectively communicated with the second opening and the sewage discharge opening.

10. The control valve for a water treatment machine according to claim 9, wherein When the movable valve plate rotates relative to the first fixed valve plate and the second fixed valve plate, so that the flat valve is in a second normal flushing working position, the sixth channel of the flat valve is communicated with the third channel, thereby forming a third normal flushing flow channel respectively communicated with the second fluid opening and the third opening, and the eighth channel is respectively communicated with the fourth channel and the sewage discharge channel, thereby forming a fourth normal flushing flow channel respectively communicated with the fourth opening and the sewage discharge opening.

11. The control valve for a water treatment machine according to claim 6, characterized in that, When the flat valve is in the water treatment working position, the sewage discharge channel is blocked by the third fluid control surface of the movable valve plate.

12. The control valve for a water treatment machine according to claim 8, wherein, When the flat valve is in the first backwashing working position, the third channel is blocked by the second fluid control surface of the movable valve plate; when the flat valve is in the second backwashing working position, the second channel is blocked by the second fluid control surface of the movable valve plate.

13. The control valve for a water treatment machine according to claim 10, characterized in that, When the flat valve is in the first normal flushing working position, the third channel and the fourth channel are respectively blocked by the second fluid control surface of the movable valve plate; when the flat valve is in the second normal flushing working position, the first channel is blocked by the second fluid control surface of the movable valve plate.

14. The control valve for a water treatment machine according to any one of claims 6-13, characterized in that, The first fluid control surface of the first fixed valve plate of the flat valve forms a central part and an edge part extending outward from the central part. The first channel, the fourth channel, the second channel and the third channel of the flat valve are arranged in this clockwise order on the edge part of the first fluid control surface of the first fixed valve plate. The sixth channel, the eighth channel and the seventh channel of the flat valve are arranged in this clockwise order on the second fluid control surface of the movable valve plate. The fifth channel and the sewage discharge channel of the flat valve are arranged on the fourth fluid control surface of the second fixed valve plate, and the first channel, the fourth channel, the second channel and the third channel of the flat valve are arranged separately on the first fluid control surface of the first fixed valve plate; the sixth channel, the eighth channel and the seventh channel of the flat valve are arranged separately on the second fluid control surface of the movable valve plate; the fifth channel and the sewage discharge channel of the flat valve are arranged separately on the fourth fluid control surface of the second fixed valve plate.

15. The control valve for a water treatment machine according to any one of claims 6-13, characterized in that, The first fluid control surface of the first fixed valve plate of the flat valve forms a central portion and an edge portion extending outward from the central portion. The first channel, the fourth channel, the second channel, and the third channel of the flat valve are arranged counterclockwise in this order on the edge portion of the first fluid control surface of the first fixed valve plate. The sixth channel, the eighth channel, and the seventh channel of the flat valve are arranged counterclockwise in this order on the second fluid control surface of the movable valve plate. The fifth channel and the sewage discharge channel of the flat valve are arranged on the fourth fluid control surface of the second fixed valve plate, and the first channel, the fourth channel, the second channel, and the third channel of the flat valve are spaced apart and arranged on the first fluid control surface of the first fixed valve plate; the sixth channel, the eighth channel, and the seventh channel of the flat valve are spaced apart and arranged on the second fluid control surface of the movable valve plate; the fifth channel and the sewage discharge channel of the flat valve are spaced apart and arranged on the fourth fluid control surface of the second fixed valve plate.

16. The control valve for a water treatment machine according to any one of claims 1-13, characterized in that, The valve body includes a first valve body portion and a second valve body portion, wherein the valve cavity is formed between the first valve body portion and the second valve body portion. The first opening, the second opening, the third opening, and the fourth opening are formed in the first valve body portion. The first fluid opening and the sewage discharge opening are formed in the second valve body portion. The second fluid opening is selectively arranged in the first valve body portion or the second valve body portion of the valve body.

17. A water treatment machine, characterized in that, Comprising: A control valve according to any one of claims 1-16; And A first water treatment device; And A second water treatment device, wherein the first water treatment device has a first water inlet and a first water outlet, the second water treatment device has a second water inlet and a second water outlet, and the first opening of the valve body is adapted to communicate with the first water inlet of the first water treatment device, the second opening is adapted to communicate with the first water outlet of the first water treatment device, the third opening is adapted to communicate with the second water inlet of the second water treatment device, and the fourth opening is adapted to communicate with the second water outlet of the second water treatment device.

18. The water treatment machine according to claim 17, characterized in that, The first water treatment device includes a first outer shell, a first central tube, and first water treatment materials. The first outer shell has a first end portion and a first shell main body extending from the first end portion. The first central tube has a first tube upper end and a first tube lower end. The first water inlet is formed between the first end portion and the first tube upper end. The first tube upper end forms the first water outlet. The first water treatment materials are arranged between the first outer shell and the first central tube; the second water treatment device includes a second outer shell, a second central tube, and second water treatment materials. The second outer shell has a second end portion and a second shell main body extending from the second end portion. The second central tube has a second tube upper end and a second tube lower end extending downward from the second tube upper end. The second water inlet is formed between the second end portion of the second outer shell and the second tube upper end. The second tube upper end forms the second water outlet. The second water treatment materials are arranged between the second outer shell and the second central tube.

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