Multifunctional plane valve for water treatment

Abstract

The utility model relates to the technical field of water treatment equipment, in particular to a multifunctional plane valve for water treatment, which comprises a valve body, a fixed valve plate and a movable valve plate which are respectively of a quartered structure, an inner valve cavity of the valve body comprises a central pollution discharge cavity, a working cavity, a water passing cavity, a backwashing cavity and a forward washing cavity, and the working cavity, the water passing cavity, the backwashing cavity and the forward washing cavity occupy one equal angle. A valve body partition beam is arranged in the backwashing chamber to divide the backwashing chamber into a first water outlet chamber communicated with the second filter element interface and a second water outlet chamber communicated with the water outlet, which have the same central angle; the fixed valve plate is provided with a central through hole, and a working water through hole, a water passing water through hole, a backwashing water through hole and a forward washing water through hole which account for an equal angle in proportion; the water passing cavity, the forward washing cavity and the working cavity are all communicated with the first filter element interface; the movable valve plate is provided with a central groove, a water inlet through hole, a first groove, a second groove and a third groove, wherein the water inlet through hole, the first groove, the second groove and the third groove are equally divided. The plane valve is of a brand-new quartering structure, the water inlet and outlet amount and the discharge capacity are reasonable, and the diversified design of a raw water flowing path can be achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to water treatment equipment technical field especially relates to a water treatment multifunctional plane valve. BACKGROUND

[0002] In recent years, with the control valve of plane sealing structure more and more be applied in water treatment field, market has recognized the structure of plane valve. Now's industrial or civil water treatment system mostly adopts multifunctional plane valve to carry out flow passage switching, such as the plane valve of filter system, can realize filtration, backwashing, positive washing and so on. Plane valve is generally used in carbon filter, sand filter and other industrial water treatment equipment, and is widely used for removing impurities, residual chlorine, heavy metals and the like on household water treatment equipment, improving people's water quality.

[0003] The plane valve adopted by the existing filter system mostly includes a valve body, a movable valve disc and a fixed valve disc, and different angles of rotation of the movable valve disc in the valve body are utilized to realize functions such as positive washing, backwashing and filtration. For example, a water treatment filter valve with a closing function disclosed in a Chinese utility model patent with the authorization announcement No. CN20717874U introduces a structure in which the movable valve disc and the fixed valve disc are circumferentially divided into seven equal parts and six equal parts. For another example, a fluid valve and a valve disc assembly for the fluid valve disclosed in a Chinese utility model patent with the authorization announcement No. CN209012476U introduces a structure in which the movable valve disc and the fixed valve disc are circumferentially divided into nine equal parts. However, with the increase of the number of equal parts, the effective water passage area in the valve body will be correspondingly reduced, and the water inflow and outflow and the sewage discharge of the valve body will be affected to a certain extent. In order to filter larger flow of raw water, the common practice is to increase the area of the movable valve disc and the fixed valve disc, which undoubtedly increases the size of the valve body and the manufacturing cost. Of course, in addition to meeting the normal functions of the valve body, the valve body, the movable valve disc and the fixed valve disc can also be divided into a smaller number of equal parts to increase the water inflow and outflow and the sewage discharge. How to effectively design the structure of the plane valve so that the valve body, the movable valve disc and the fixed valve disc can be divided into a smaller number of equal parts in addition to meeting the normal functions of the valve body has become a problem to be solved by those skilled in the art. SUMMARY

[0004] To solve the problems in the prior art, the utility model provides a water treatment multifunctional plane valve.

[0005] To solve the above problems, the water treatment multifunctional plane valve provided by the utility model adopts the following technical scheme:

[0006] The water treatment multifunctional plane valve comprises a valve body, a movable valve disc and a fixed valve disc installed in the valve body, the valve body is provided with a water inlet, a water outlet, a sewage outlet, a first filter core interface and a second filter core interface, the first filter core interface is used for being communicated with a filter tank body, and the second filter core interface is used for being communicated with a central pipe.

[0007] The valve body, the movable valve plate and the fixed valve plate are all four-part structure;

[0008] The valve body has an outer valve cavity and an inner valve cavity, the outer valve cavity is communicated with the water inlet, the inner valve cavity includes a central blowdown chamber communicated with the blowdown outlet, and working chamber, water passing chamber, backwashing chamber and forward washing chamber each occupying a quarter angle along the circumferential direction of the central blowdown chamber; the water passing chamber, the forward washing chamber and the working chamber are communicated with the first filter core interface, the backwashing chamber is communicated with the second filter core interface, and the second water outlet chamber is communicated with the water outlet;

[0009] The fixed valve plate has a central through hole and working water passing hole, water passing hole, backwashing water passing hole and forward washing water passing hole each occupying a quarter angle along the circumferential direction of the central through hole, the working water passing hole corresponds to the working chamber and is communicated with the working chamber, the water passing hole corresponds to the water passing chamber and is communicated with the water passing chamber, the backwashing water passing hole corresponds to the backwashing chamber and is communicated with the backwashing chamber, and the forward washing water passing hole corresponds to the forward washing chamber and is communicated with the forward washing chamber; one of the water passing hole, the backwashing water passing hole and the forward washing water passing hole is provided with a linear fixed valve plate separation beam to separate the fixed valve plate blind plate and the water outlet through hole with the same central axis into two regions;

[0010] The movable valve plate has a central recess and water inlet through hole, first recess, second recess and third recess each occupying a quarter angle along the circumferential direction of the central recess, one of the first recess, the second recess and the third recess is provided with a linear movable valve plate separation beam to separate the blowdown blind groove and the shielding blind groove with the same central axis, the blowdown blind groove is communicated with the central recess, and the sum of the central angles corresponding to the shielding blind groove and the blowdown blind groove is equal to the sum of the central angles corresponding to the fixed valve plate blind plate and the water outlet through hole;

[0011] The water outlet is connected with a valve, and the valve is closed when the valve body is in the forward washing and backwashing state.

[0012] Further, the fixed valve plate separation beam is arranged in the forward washing water passing hole, the pipeline at the blowdown outlet passes through the forward washing chamber and is communicated with the central blowdown chamber; the first recess and the second recess are respectively located on the two sides of the water inlet through hole, and the movable valve plate separation beam is arranged in the second recess.

[0013] Further, the fixed valve plate separation beam is arranged in the forward washing water passing hole, the pipeline at the blowdown outlet passes through the forward washing chamber and is communicated with the central blowdown chamber; the first recess and the second recess are respectively located on the two sides of the water inlet through hole, and the movable valve plate separation beam is arranged in the second recess.

[0014] Preferably, the central angle corresponding to the blowdown blind groove is equal to the central angle corresponding to the fixed valve plate blind plate, and the central angle corresponding to the shielding blind groove is equal to the central angle corresponding to the water outlet through hole.

[0015] Preferably, the central angle corresponding to the pollution blind slot is not less than the central angle corresponding to the shielding blind slot.

[0016] Further, the valve body is an integral molding type structure.

[0017] Further, a quarter circle arc beam is integrally formed on the dynamic valve sheet at the position of the water inlet through hole, the lower surface of the arc beam is coplanar with the lower surface of the dynamic valve sheet, and the outer side surface of the arc beam is coplanar with the outer side surface of the dynamic valve sheet.

[0018] The water treatment multi-functional plane valve has the advantages that:

[0019] The utility model discloses a water treatment multi-functional plane valve of brand -new four -quarter structure, carries out optimization innovation to valve body, dynamic valve sheet and fixed valve sheet, under the premise of realizing normal filtration, backwash and positive washing function, makes valve body, dynamic valve sheet and fixed valve sheet can reach the circumference four equal division, has greater inlet and outlet water flow and sewage discharge flow under the condition that the effective area of the valve body of same type plane valve is same. In addition, since the water passing chamber, the positive washing chamber and the working chamber on the valve body all communicate with the first filter core interface up and down, the effective utilization area of the first filter core interface is improved, in actual application, the relative position of the water passing chamber, the positive washing chamber and the working chamber on the valve body can be effectively adjusted and designed according to the needs, and the corresponding relative position of the corresponding hole and groove on the dynamic valve sheet and the fixed valve sheet can be adjusted and designed, and diversified design can be realized, that is, the diversification of raw water flow path is realized, and it is more convenient and reasonable to use. BRIEF DESCRIPTION OF DRAWINGS

[0020] The above and other objects, features and advantages of the exemplary embodiments of the present application will be more apparent from the following detailed description read in conjunction with the accompanying drawings, in which several embodiments of the present application are shown by way of example, and wherein the same reference numerals refer to the same or similar components throughout the several views, in which:

[0021] Figure 1 It is a perspective structure schematic view of the embodiment of the water treatment multi-functional plane valve of the utility model;

[0022] Figure 2 It is a top view of the valve body; Figure 1

[0023] Figure 3 It is a bottom view of the valve body; Figure 1

[0024] Figure 4 It is a structure schematic view of the fixed valve sheet of the water treatment multi-functional plane valve of the utility model;

[0025] Figure 5 ​​The utility model discloses a water treatment multifunctional plane valve middle fixed valve piece installation in the schematic diagram of valve body,

[0026] Figure 6 The utility model discloses a water treatment multifunctional plane valve middle dynamic valve piece one of the schematic diagram of perspective,

[0027] Figure 7 The utility model discloses a water treatment multifunctional plane valve middle dynamic valve piece another of the schematic diagram of perspective,

[0028] Figure 8 The utility model discloses a water treatment multifunctional plane valve is in the plane schematic diagram of relative position relation of dynamic valve piece and valve body when being in filter state,

[0029] Figure 9 The utility model discloses a water treatment multifunctional plane valve is in the cross section schematic diagram of relative position relation of dynamic valve piece and valve body when being in filter state,

[0030] Figure 10 The utility model discloses a water treatment multifunctional plane valve is in the plane schematic diagram of relative position relation of dynamic valve piece and valve body when being in backwash state,

[0031] Figure 11 The utility model discloses a water treatment multifunctional plane valve is in the cross section schematic diagram of relative position relation of dynamic valve piece and valve body when being in backwash state,

[0032] Figure 12 The utility model discloses a water treatment multifunctional plane valve is in the plane schematic diagram of relative position relation of dynamic valve piece and valve body when being in forward washing state,

[0033] Figure 13 The utility model discloses a water treatment multifunctional plane valve is in the cross section schematic diagram of relative position relation of dynamic valve piece and valve body when being in forward washing state.

[0034] Mark explanation:

[0035] 1, valve body, 2, dynamic valve piece, 3, fixed valve piece, 4, drive arrangement, 5, water inlet, 6, water outlet, 7, blowdown, 8, outer valve cavity, 9, center blowdown chamber, 10, forward washing chamber, 11, working chamber, 12, backwash chamber, 13, water passing chamber, 14, water outlet through -hole, 15, first filter core interface, 16, second filter core interface, 17, center recess, 18, water inlet through -hole, 19, dynamic valve piece separation beam, 22, first recess, 23, blowdown blind groove, 24, blind groove of sheltering, 25, third recess, 26, circular arc beam, 27, center through -hole, 28, working water through -hole, 29, water passing water through -hole, 30, backwash water through -hole, 31, fixed valve piece blind plate, 32, fixed valve piece separation beam. Specific implementation

[0036] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It should be known by those skilled in the art that the embodiments described below are only part of the embodiments of the present disclosure, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0037] The principles and spirits of the present application will be explained in detail below with reference to several representative embodiments of the present application.

[0038] Embodiment 1 of the water treatment multifunctional flat valve provided by the present application:

[0039] As shown in the drawings, Figure 1 The water treatment multifunctional flat valve comprises a valve body 1, a driving device 4 mounted on the valve body 1, and a fixed valve plate 3 and a movable valve plate 2 mounted in the valve body 1. The driving device 4 is a prior art for driving the movable valve plate 2 to rotate. In this embodiment, the valve body 1, the fixed valve plate 3 and the movable valve plate 2 are all four-part structure.

[0040] Specifically, as shown in the drawings, Figure 2 and Figure 3 The valve body 1 is integrally injection molded. The side wall of the valve body 1 is provided with a water inlet 5, a water outlet 6 and a blowdown port 7. The water inlet 5 and the water outlet 6 are coaxially arranged on the two radial sides of the valve body 1, and the blowdown port 7 is arranged between the water inlet 5 and the water outlet 6. A valve (not shown in the figure) is connected to the water outlet 6, which is preferably an electric valve, for controlling the water outlet 6. The bottom of the valve body 1 is provided with a first filter element interface 15 and a second filter element interface 16. The first filter element interface 15 is used to communicate with the filter tank body, and the second filter element interface 16 is used to communicate with the center pipe.

[0041] The valve body 1 has coaxially arranged outer valve cavity 8 and inner valve cavity. The outer valve cavity 8 communicates with the water inlet 5. The inner valve cavity comprises a center blowdown chamber 9 and a forward washing chamber 10, a working chamber 11, a backwashing chamber 12 and a water passing chamber 13 arranged in sequence along the circumferential direction of the center blowdown chamber 9 and each occupying an equal angle. The working chamber 11 and the backwashing chamber 12 are oppositely arranged, and the forward washing chamber 10 and the water passing chamber 13 are oppositely arranged. The top surfaces of the forward washing chamber 10, the working chamber 11, the backwashing chamber 12 and the water passing chamber 13 are on the same horizontal plane, and the top of the center blowdown chamber 9 protrudes upwardly outside the forward washing chamber 10, the working chamber 11, the backwashing chamber 12 and the water passing chamber 13. The water passing chamber 13, the forward washing chamber 10 and the working chamber 11 all communicate with the first filter element interface 15, the backwashing chamber 12 communicates with the second filter element interface 16, and the pipeline at the blowdown port 7 passes through the forward washing chamber 10 and communicates with the center blowdown chamber 9.

[0042] As shown in Figure 4 and Figure 5 , the fixed valve plate 3 has a center through hole 27 and a forward washing water hole, a water passing water hole 29, a back washing water hole 30 and a working water hole 28 arranged along the circumferential direction of the center through hole 27 and each occupying one equal part. Among them, the working water hole 28 corresponds to and communicates with the working chamber 11 up and down, the water passing water hole 29 corresponds to and communicates with the water passing chamber 13 up and down, the back washing water hole 30 corresponds to and communicates with the back washing chamber 12 up and down, and the forward washing water hole corresponds to and communicates with the forward washing chamber 10 up and down. A linear fixed valve plate separation beam 32 is arranged in the forward washing water hole to separate the forward washing water hole into two areas of fixed valve plate blind plate 31 and water outlet through hole 14 with the same center axis. When installed, the center through hole 27 on the fixed valve plate 3 is sleeved on the outer center drain chamber 9 of the inner valve chamber.

[0043] As shown in Figure 6 and Figure 7 , the moving valve plate 2 has a center groove 17 and a water inlet through hole 18, a first groove 22, a second groove and a third groove 25 arranged along the circumferential direction of the center groove 17 and each occupying one equal part. A linear moving valve plate separation beam 19 is arranged in the second groove to separate the second groove into a drain blind groove 23 and a blind groove 24 with the same center axis, and the drain blind groove 23 communicates with the center groove 17. The sum of the central angles corresponding to the blind groove 24 and the drain blind groove 23 is equal to the sum of the central angles corresponding to the fixed valve plate blind plate 31 and the water outlet through hole 14. In this embodiment, the central angle corresponding to the drain blind groove 23 is equal to the central angle corresponding to the fixed valve plate blind plate 31, the central angle corresponding to the blind groove 24 is equal to the central angle corresponding to the water outlet through hole 14, and the central angle corresponding to the drain blind groove 23 is greater than the central angle corresponding to the blind groove 24. A quarter circle arc beam 26 is integrally formed on the moving valve plate 2 at the position of the water inlet through hole 18, the lower surface of the arc beam 26 is coplanar with the lower surface of the moving valve plate 2, and the outer side surface of the arc beam 26 is coplanar with the outer side surface of the moving valve plate 2.

[0044] When the moving valve plate 2 rotates in the valve body 1, it cooperates with the fixed valve plate 3 in the form of end face sealing. The driving device 4 drives the moving valve plate 2 to rotate at different angles, which can realize the filtering, back washing and forward washing functions of the valve body 1, and the realization of each function is as follows:

[0045] As shown in Figure 8 and Figure 9As shown, the multi-functional planar valve for water treatment is in the filtration state. At this time, the first groove blocks the water passage chamber 13 and the water passage hole 29 in the vertical direction, and the third groove 25 blocks the backwash chamber 12 and the backwash water passage hole 30 in the vertical direction. The sewage blind groove 23 corresponds vertically to the fixed valve plate blind plate 31 to block the fixed valve plate blind plate 31, and the blocking blind groove 24 corresponds vertically to the water outlet hole 14 to block the water outlet hole 14. The working chamber 11, the water inlet hole 18, and the working water passage hole 28 correspond vertically and are connected. At this time, the valve connected to the outlet 6 is in the open state. The flow path of the raw water is: water inlet 5 → outer valve chamber 8 → water inlet hole 18 → working water passage hole 28 → working chamber 11 → first filter element interface 15 → filter tank → central pipe → second filter element interface 16 → backwash chamber 12 → outlet 6.

[0046] like Figure 10 and Figure 11 As shown, the multi-functional planar valve for water treatment is in the backwash state. The moving valve plate 2 rotates 180° counterclockwise compared to the filtration state. At this time, the first groove 22 blocks the forward wash chamber 10, the fixed valve plate blind plate 31, and the water outlet 14 in the vertical direction, and the third groove 25 blocks the working chamber 11 and the working water outlet 28 in the vertical direction. The sewage blind groove 23 and the blocking blind groove 24 together block the water passage chamber 13 and the water passage 29 in the vertical direction. The water inlet 18 corresponds to and is connected to the backwash chamber 12 and the backwash water outlet 30 in the vertical direction. At this time, the valve connected to the water outlet 6 is in the closed state. The raw water flows through the following path: inlet 5 → outer valve chamber 8 → inlet hole 18 → backwash water hole 30 → backwash chamber 12 → second filter element interface 16 → central pipe → filter tank → first filter element interface 15 → water passage chamber 13 → water passage hole 29 → sewage blind trough 23 → central sewage discharge chamber 9 → sewage outlet 7.

[0047] like Figure 12 and Figure 13 As shown, the multi-functional planar valve for water treatment is in the forward washing state. The moving valve plate 2 rotates 270° counterclockwise compared to the filtration state. At this time, the first groove 22 blocks the working chamber 11 and the working water passage 28 in the vertical direction, the third groove 25 blocks the water passage chamber 13 and the water passage 29 in the vertical direction, the sewage blind groove 23 and the blocking blind groove 24 together block the backwash chamber 12 and the backwash water passage 30 in the vertical direction, and the fixed valve plate blind plate 31 partially blocks the water inlet passage 18 in the vertical direction. The water inlet passage 18 is connected to the water outlet passage 14 and the forward washing chamber 10. At this time, the valve connected to the outlet 6 is still in the closed state. The raw water flows through the following path: inlet 5 → outer valve chamber 8 → inlet hole 18 → outlet hole 14 → forward wash chamber 10 → first filter element interface 15 → filter tank → central pipe → second filter element interface 16 → backwash chamber 12 → backwash water passage 30 → sewage blind trough 23 → central sewage discharge chamber 9 → sewage outlet 7.

[0048] The water treatment multifunctional plane valve of the utility model adopts four-part grid structure, has more excellent water inlet and outlet quantity and sewage quantity, can fully utilize the first filter core interface, can reasonably select and design the water inlet position of the moving valve piece, can realize the diversity design of the raw water flow path in addition to meeting normal filtration, backwashing and forward washing functions.

[0049] The utility model provides a water treatment multifunctional plane valve's embodiment 2:

[0050] The difference between the embodiment 1 mainly lies in: in the embodiment 1, the central angle corresponding to the sewage blind groove is equal to the central angle corresponding to the fixed valve piece blind plate, the central angle corresponding to the shielding blind groove is equal to the central angle corresponding to the water outlet through hole, and the central angle corresponding to the sewage blind groove is greater than the central angle corresponding to the shielding blind groove.In this embodiment, the central angle corresponding to the sewage blind groove is equal to the central angle corresponding to the shielding blind groove, and of course in other embodiments, the central angle corresponding to the sewage blind groove can be less than the central angle corresponding to the shielding blind groove.Only need to satisfy the sum of the central angle corresponding to the shielding blind groove and the sewage blind groove is equal to the sum of the central angle corresponding to the fixed valve piece blind plate and the water outlet through hole.

[0051] The utility model provides a water treatment multifunctional plane valve's embodiment 3:

[0052] The difference between the embodiment 1 mainly lies in: in the embodiment 1, the position corresponding to the water inlet through hole on the moving valve piece is provided with a quarter circle arc beam.In this embodiment, the moving valve piece is not provided with the above-mentioned arc beam.

[0053] It should be noted that the above is only a preferred embodiment of the utility model, and is not used to limit the utility model, and any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. A multifunctional flat valve for water treatment, comprising a valve body and a movable valve disc and a fixed valve disc installed in the valve body, the valve body being provided with a water inlet, a water outlet, a blowdown outlet, a first filter core interface and a second filter core interface, the first filter core interface being used for communication with a filter tank body, and the second filter core interface being used for communication with a central pipe, characterized in that the valve body, the movable valve disc and the fixed valve disc are all four-part structures; the valve body has an outer valve cavity and an inner valve cavity, the outer valve cavity is communicated with the water inlet, the inner valve cavity comprises a central blowdown chamber communicated with the blowdown outlet, and a working chamber, a water passing chamber, a backwashing chamber and a forward washing chamber each occupying an equal angle along the circumferential direction of the central blowdown chamber; the water passing chamber, the forward washing chamber and the working chamber are all communicated with the first filter core interface, the backwashing chamber is communicated with the second filter core interface, and the second water outlet chamber is communicated with the water outlet; the fixed valve disc has a central through hole and a working water passing hole, a water passing water passing hole, a backwashing water passing hole and a forward washing water passing hole each occupying an equal angle along the circumferential direction of the central through hole, the working water passing hole is corresponded with and communicated with the working chamber, the water passing water passing hole is corresponded with and communicated with the water passing chamber, the backwashing water passing hole is corresponded with and communicated with the backwashing chamber, and the forward washing water passing hole is corresponded with and communicated with the forward washing chamber; one of the water passing water passing hole, the backwashing water passing hole and the forward washing water passing hole is provided with a linear fixed valve disc separation beam to separate the fixed valve disc blind plate and the water outlet through hole into two regions with the same central axis; the movable valve disc has a central groove and a water inlet through hole, a first groove, a second groove and a third groove each occupying an equal angle along the circumferential direction of the central groove, one of the first groove, the second groove and the third groove is provided with a linear movable valve disc separation beam to separate a blowdown blind groove and a shielding blind groove into two regions with the same central axis, the blowdown blind groove is communicated with the central groove, and the sum of the central angles of the shielding blind groove and the blowdown blind groove is equal to the sum of the central angles of the fixed valve disc blind plate and the water outlet through hole; a valve is connected to the water outlet, and the valve is closed when the valve body is in the forward washing and backwashing state. The fixed valve disc separation beam is arranged in the forward washing water passing hole, a pipeline at the blowdown outlet passes through the forward washing chamber and is communicated with the central blowdown chamber; the first groove and the second groove are respectively arranged on the two sides of the water inlet through hole, and the movable valve disc separation beam is arranged in the second groove. The top of the working chamber, the water passing chamber, the backwashing chamber and the forward washing chamber is flush, the top of the central blowdown chamber is protruded out of the working chamber, and the central through hole is sleeved outside the central blowdown chamber. The central angle of the blowdown blind groove is equal to the central angle of the fixed valve disc blind plate, and the central angle of the shielding blind groove is equal to the central angle of the water outlet through hole. The central angle of the blowdown blind groove is not less than the central angle of the shielding blind groove. The valve body is an integral molding structure.

2. The water treatment multifunctional flat valve according to claim 1, characterized in that, A quarter of a circular arc beam is integrally formed on the movable valve disc at the position of the water inlet through hole, the lower surface of the circular arc beam is coplanar with the lower surface of the movable valve disc, and the outer surface of the circular arc beam is coplanar with the outer surface of the movable valve disc.

3. The water treatment multifunctional flat valve according to claim 2, characterized in that, ​ 4. The multifunctional water treatment flat valve according to any one of claims 1 to 3, characterized in that, ​ 5. The water treatment multifunctional flat valve according to claim 4, characterized in that, ​ 6. The water treatment multifunctional flat valve according to any one of claims 1-3, characterized in that, ​ 7. The water treatment multifunctional flat valve according to any one of claims 1-3, characterized in that, ​

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