High-efficiency filter valve with single valve body

Abstract

A high-efficiency filter valve with a single valve body (1), comprising a valve body (1) and a movable valve cylinder (10) rotatably sealed in the valve body (1). A vertically-through fixed valve cylinder (9) is coaxially arranged in the valve body (1). The outer diameter of the fixed valve cylinder (9) is less than the inner diameter of the valve body (1), the lower end of the fixed valve cylinder (9) is sealingly connected to the top end of a first filter element interface (5), and an outer flow channel cavity (18) is formed between the fixed valve cylinder (9), the first filter element interface (5) and the inner wall of the valve body (1). A second filter element interface (6) is coaxially and fixedly arranged in the first filter element interface (5), and a vertically-through first inner flow channel cavity (21) is formed between the second filter element interface (6) and the first filter element interface (5). The top of the valve body (1) is rotatably connected to the top of the movable valve cylinder (10). The movable valve cylinder (10) comprises an outer cylinder (11) and an inner cylinder (12) that are sleeved coaxially. The outer cylinder (11) is rotatably inserted into the fixed valve cylinder (9), a second inner flow channel cavity (22) having a lower opening is formed between the outer cylinder (11) and the inner cylinder (12), and the second inner flow channel cavity (22) is vertically communicated with the first inner flow channel cavity (21). When in use, the filter valve allows a greater water flow and achieves higher water treatment efficiency under the same valve body cross-sectional area.

Description

Single-valve-body high-efficiency filter valve TECHNICAL FIELD

[0001] The present application relates to the technical field of water treatment, in particular to a single-valve-body high-efficiency filter valve. BACKGROUND

[0002] Water treatment systems usually use planar control valves to switch flow channels. For example, the control valve of a filter system needs to realize the functions of filtering, backwashing, forward flushing, etc.; and the control valve of a softening system needs to realize the functions of softening, backwashing, regeneration, forward flushing, etc.

[0003] The structure of the control valve of a filter system is shown in the multifunctional filter valve disclosed in the Chinese patent with the authorized announcement number CN219299991U, and the structure of the control valve of a softening system is shown in the multifunctional softening valve disclosed in the Chinese patent with the authorized announcement number CN218954102U. In the above two patents, in order to realize the functions of filtering, backwashing, forward flushing, etc., multiple water passing partitions are arranged on the fixed valve disc and the movable valve disc to separate the water flow channels for the filtered water flow, the backwashing water flow and the forward flushing water flow. These water passing partitions arranged on the fixed valve disc and the movable valve disc will cause the effective water passing area from the first filter core interface and the second filter core interface into the corresponding chamber to be far less than the horizontal cross-sectional area of the first filter core interface and the second filter core interface, thereby affecting the water treatment efficiency. SUMMARY

[0004] In order to solve the problem that the multiple water passing partitions arranged on the fixed valve disc and the movable valve disc in the filter valve will affect the water treatment efficiency, the present application proposes a single-valve-body high-efficiency filter valve.

[0005] The technical solution of the present application is as follows: a single-valve-body high-efficiency filter valve, comprising a valve body and a movable valve cylinder rotatingly and sealingly arranged in the valve body, the valve body and the movable valve cylinder are both cylindrical structures with a lower opening and a sealed top, the outer diameter of the movable valve cylinder is less than the inner diameter of the valve body;

[0006] An upper and lower through fixed valve cylinder is coaxially arranged in the valve body, the outer diameter of the fixed valve cylinder is less than the inner diameter of the valve body, the lower end of the fixed valve cylinder is sealingly connected with the top end of a first filter core interface, the fixed valve cylinder and the first filter core interface are internally and upwardly connected, the outer diameters of the first filter core interface and the fixed valve cylinder are both less than the inner diameter of the valve body, and the outer wall of the first filter core interface is sealingly connected with the inner wall of the valve body; an outer flow channel cavity is jointly formed between the fixed valve cylinder, the first filter core interface and the inner wall of the valve body;

[0007] The fixed valve cylinder is provided with a water outlet hole, a first water passing hole, a second water passing hole, a drain hole, a third water passing hole and a fourth water passing hole, wherein the first water passing hole, the second water passing hole, the third water passing hole and the fourth water passing hole are all in communication with the outer flow channel cavity;

[0008] The second filter core interface is coaxially arranged inside the first filter core interface, the outer diameter of the second filter core interface is smaller than the inner diameter of the first filter core interface, and a first internal flow channel cavity is formed between the second filter core interface and the first filter core interface and penetrates up and down;

[0009] The side wall of the valve body is provided with a water inlet joint, a water outlet joint and a drain joint, the water inlet joint is arranged in correspondence with the third water passage inside and outside and is spaced apart, one end of the water outlet joint penetrates through the external flow channel cavity and is directly connected with the water outlet, and one end of the drain joint penetrates through the external flow channel cavity and is directly connected with the drain hole;

[0010] The top of the valve body is rotationally connected with the top of the movable valve cylinder, the movable valve cylinder comprises a coaxially sleeved outer cylinder and an inner cylinder, the outer cylinder is rotationally inserted in the fixed valve cylinder, and the outer cylinder is sealingly connected with the fixed valve cylinder, the top of the outer cylinder and the top of the inner cylinder are provided with sealing structures, and the top of the outer cylinder and the top of the inner cylinder are sealingly and fixedly connected, and a second internal flow channel cavity with an open lower end is formed between the outer cylinder and the inner cylinder;

[0011] The outer wall of the outer cylinder is provided with a fifth water passage and a sixth water passage in communication with the second internal flow channel cavity, and the side wall of the outer cylinder and the side wall of the inner cylinder are jointly provided with a first straight-through hole and a second straight-through hole, the first straight-through hole and the second straight-through hole are used to directly connect and isolate the internal flow channel cavity and the inside of the inner cylinder from the second internal flow channel cavity;

[0012] The lower end of the outer cylinder is rotationally and sealingly inserted in the inside of the first filter core interface, the lower end of the inner cylinder is rotationally and sealingly matched with the second filter core interface, and the second internal flow channel cavity is in communication with the first internal flow channel cavity up and down;

[0013] The movable valve cylinder has a filtering position, a backwashing position and a forward flushing position in its rotation stroke;

[0014] When the movable valve cylinder is in the filtering position, the water inlet joint, the external flow channel cavity, the first water passage, the third water passage, the fifth water passage, the sixth water passage, the second internal flow channel cavity and the first internal flow channel cavity are in communication, the inside of the inner cylinder, the second straight-through hole, the water outlet and the water outlet joint are in communication, and the second water passage, the drain hole and the fourth water passage are blocked by the movable valve cylinder;

[0015] When the movable valve cylinder is in the backwashing position, the water inlet joint, the external flow channel cavity, the second water passage, the second straight-through hole, the fourth water passage, the first straight-through hole and the inside of the inner cylinder are in communication, the first internal flow channel cavity, the second internal flow channel cavity, the sixth water passage, the drain hole and the drain joint are in communication, and the fifth water passage, the water outlet, the first water passage and the third water passage are blocked by the movable valve cylinder;

[0016] When the valve cylinder is in the positive flushing position, the water inlet joint, the outer flow channel cavity, the fourth water passing hole, the sixth water passing hole, the second inner flow channel cavity and the first inner flow channel cavity are communicated, the fifth water passing hole and the second water passing hole are communicated, the water outlet joint is communicated with the inside of the inner cylinder through the drainage hole and the first straight-through hole, and the water outlet hole, the first water passing hole, the third water passing hole and the second straight-through hole are all blocked by the valve cylinder.

[0017] Preferably, the upper end of the second filter core interface is lower than the upper end of the first filter core interface, and the lower end of the inner cylinder penetrates the outer cylinder and is rotationally and sealingly connected with the second filter core interface.

[0018] Preferably, an annular support rim coaxially arranged is fixedly arranged on the inner side of the upper end of the first filter core interface, and the bottom of the valve cylinder is fixedly arranged on the top of the support rim.

[0019] The bottom of the support rim is fixedly arranged with a connecting rod in a circumferential direction, and the lower end of the connecting rod extends towards the center of the support rim and is fixedly connected with the outer side wall of the second filter core interface.

[0020] Preferably, the lower end of the outer cylinder is above the connecting rod and has a space with the connecting rod.

[0021] Preferably, the lower end of the second filter core interface is higher than the lower end of the first filter core interface, so that the lower end of the second filter core interface is inside the first filter core interface.

[0022] Preferably, the lower end of the second filter core interface and the first filter core interface are fixedly connected through a plurality of first connecting plates arranged around the second filter core interface, and the first connecting plates are below the connecting rod.

[0023] Preferably, the water inlet joint and the water outlet joint are in the same horizontal plane and are respectively located on the left and right sides of the valve body, the water outlet joint is located between the water inlet joint and the water outlet joint, and the water inlet joint, the water outlet joint and the water outlet joint are all staggered in the vertical direction.

[0024] The fifth water passing hole and the second straight-through hole are in the same horizontal plane, the sixth water passing hole and the first straight-through hole are in the same horizontal plane, the fifth water passing hole corresponds to the first straight-through hole in the vertical direction, and the second straight-through hole corresponds to the sixth water passing hole in the vertical direction.

[0025] Preferably, the top of the outer cylinder and the inner cylinder are sealingly and fixedly connected with a sealing plate.

[0026] Preferably, a vertical rotating shaft is rotatably and sealingly arranged in the top of the valve body, the lower end of the rotating shaft is fixedly connected with the top of the valve cylinder, the upper end of the rotating shaft is outside the valve body, a rotary driving device is fixedly arranged on the outside of the valve body, the rotary driving device is drivingly connected with the rotating shaft, and the rotary driving device is used to drive the rotating shaft to rotate.

[0027] Preferably, when the valve cylinder is in the filtering position, the valve cylinder is rotated 90 degrees counterclockwise or 270 degrees clockwise to be in the back-flushing position;

[0028] When the valve cylinder is in the filtering position, the valve cylinder is rotated 90 degrees clockwise or 270 degrees counterclockwise to be in the forward-flushing position; or, when the valve cylinder is in the back-flushing position, the valve cylinder is rotated 180 degrees counterclockwise or 180 degrees clockwise to be in the forward-flushing position.

[0029] The filter valve of the present application has the following advantages: when in use, the water flowing out of the inner cylinder or flowing into the inner cylinder has no structural obstruction in the flow path, and can fully utilize the entire horizontal cross-sectional water area of the second filter core interface, so that the water treatment efficiency is higher under the condition of the same cross-sectional area of the valve body. Compared with the existing water treatment control valve, the filter valve of the present application can maximize the water output per unit time under the condition of the same horizontal cross-sectional area of the valve body, thereby improving the water treatment efficiency. In addition, under the condition of achieving the same effective water output at the second filter core interface, the filter valve of the present application can be made smaller in size.

[0030] The filter valve of the present application has the following advantages: when in use, the water flowing out of the inner cylinder or flowing into the inner cylinder has no structural obstruction in the flow path, and can fully utilize the entire horizontal cross-sectional water area of the second filter core interface, so that the water treatment efficiency is higher under the condition of the same cross-sectional area of the valve body. Compared with the existing water treatment control valve, the filter valve of the present application can maximize the water output per unit time under the condition of the same horizontal cross-sectional area of the valve body, thereby improving the water treatment efficiency. In addition, under the condition of achieving the same effective water output at the second filter core interface, the filter valve of the present application can be made smaller in size. BRIEF DESCRIPTION OF DRAWINGS

[0031] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without any creative effort on the basis of these drawings.

[0032] Fig. 1 is a first perspective structural schematic view of the filter valve in Embodiment 1;

[0033] Fig. 2 is a second perspective structural schematic view of the filter valve in Embodiment 1;

[0034] Fig. 3 is a structural schematic view of the driving device of the filter valve in Embodiment 1;

[0035] Fig. 4 is a structural schematic view of the filter valve in Embodiment 1 from the bottom angle;

[0036] Fig. 5 is a structural schematic view of the filter valve in Fig. 3 without the driving device;

[0037] Fig. 6 is a vertical sectional view of Fig. 5;

[0038] Fig. 7 is a first perspective view of the valve body of Fig. 5 with the valve stem removed;

[0039] Fig. 8 is a second perspective view of the valve body of Fig. 5 with the valve stem removed;

[0040] Fig. 9 is a cross-sectional view of the valve body of Fig. 5 with the valve stem removed;

[0041] Fig. 10 is a first perspective view of the valve stem of Fig. 5;

[0042] Fig. 11 is a second perspective view of the valve stem of Fig. 10 rotated 180 degrees about its axis;

[0043] Fig. 12 is a cross-sectional view of the valve stem of Fig. 5;

[0044] Fig. 13 is a cross-sectional view of the valve body of Fig. 5 showing the relationship between the valve body and the valve stem when the filter valve is in the filter position;

[0045] Fig. 14 is a cross-sectional view of the valve body of Fig. 5 showing the relationship between the valve body and the valve stem when the filter valve is in the backwash position;

[0046] Fig. 15 is a cross-sectional view of the valve body of Fig. 5 showing the relationship between the valve body and the valve stem when the filter valve is in the forward wash position;

[0047] In the drawings: 1, valve body, 2, water inlet joint, 3, water outlet joint, 4, drain joint, 5, first filter element interface, 6, second filter element interface, 7, first connecting plate, 8, driven gear, 9, valve stem, 901, water outlet hole, 902, first water passage hole, 903, second water passage hole, 904, drain hole, 905, third water passage hole, 906, fourth water passage hole, 10, valve stem, 11, outer cylinder, 12, inner cylinder, 13, cover, 14, fifth water passage hole, 15, first straight-through hole, 16, second straight-through hole, 17, sixth water passage hole, 18, outer flow channel cavity, 19, support edge, 20, connecting rod, 21, first inner flow channel cavity, 22, second inner flow channel cavity. DETAILED DESCRIPTION

[0048] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, 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 effort belong to the scope of protection of the present application.

[0049] Embodiment 1: a single valve body high efficiency filter valve, as shown in FIG. 1 and FIG. 2, comprising a valve body 1 and a rotating seal valve cylinder 10 arranged in the valve body 1, the valve body 1 and the valve cylinder 10 are both open at the bottom and sealed at the top, the outer diameter of the valve cylinder 10 is smaller than the inner diameter of the valve body 1.

[0050] As shown in FIG. 3, the top of the valve body 1 is provided with a vertical rotating shaft, the lower end of the rotating shaft is fixedly connected with the top of the valve cylinder 10, and the upper end of the rotating shaft is located outside the valve body 1. A rotating drive device is fixedly arranged outside the valve body 1, the rotating drive device is in transmission connection with the rotating shaft, and the rotating drive device is used to drive the rotating shaft to rotate. The rotating drive device is a prior art, mainly including a motor, a driving gear and a driven gear 8, the driving gear is fixed on the output shaft of the motor, and the driven gear is fixed on the rotating shaft. The driving gear and the driven gear 8 are in meshing connection.

[0051] Specifically, as shown in FIG. 5, FIG. 6, FIG. 7, FIG. 8 and FIG. 9, a valve cylinder 9 is coaxially arranged in the valve body 1 and penetrates up and down, and the outer diameter of the valve cylinder 9 is smaller than the inner diameter of the valve body 1. The valve cylinder 9 is in internal up and down through connection with the first filter core interface 5, the outer diameters of the first filter core interface 5 and the valve cylinder 9 are both smaller than the inner diameter of the valve body 1, and the outer wall of the first filter core interface 5 is in sealing connection with the inner wall of the valve body 1. The valve cylinder 9 and the first filter core interface 5 and the inner wall of the valve body 1 jointly form an outer flow channel cavity 18.

[0052] The valve cylinder 9 is provided with a water outlet hole 901, a first water passing hole 902, a second water passing hole 903, a drain hole 904, a third water passing hole 905 and a fourth water passing hole 906, wherein the first water passing hole 902, the second water passing hole 903, the third water passing hole 905 and the fourth water passing hole 906 are all in communication with the outer flow channel cavity 18.

[0053] The inside of the first filter core interface 5 is fixedly provided with a second filter core interface 6 coaxially, specifically, as shown in FIG. 9, the inside of the upper end of the first filter core interface 5 is fixedly provided with an annular support rim 19 arranged coaxially, and the bottom of the valve cylinder 9 is fixedly arranged on the top of the support rim 19. The bottom of the support rim 19 is fixedly provided with a connecting rod 20 at intervals in the circumferential direction, and the lower end of the connecting rod 20 extends towards the center of the support rim 19 and is fixedly connected with the outer side wall of the second filter core interface 6.

[0054] The outer diameter of the second filter core interface 6 is smaller than the inner diameter of the first filter core interface 5, and the first filter core interface 5 and the second filter core interface 6 form a first inner flow channel cavity 21 which penetrates up and down.

[0055] The upper end of the second filter core interface 6 is lower than the upper end of the first filter core interface 5, and the lower end of the second filter core interface 6 is higher than the lower end of the first filter core interface 5, so that the lower end of the second filter core interface 6 is located in the inside of the first filter core interface 5.

[0056] In order to further enhance the stability of the second filter element interface 6 when in use, the lower end of the second filter element interface 6 is fixedly connected to the first connecting plates 7 which are spaced around the second filter element interface 6, and the first connecting plates 7 are located below the connecting rod 20. The side wall of the valve body 1 is provided with a water inlet connector 2, a water outlet connector 3 and a drain connector 4. The water inlet connector 2 is correspondingly and spacedly arranged inside and outside the third water passage hole 905. One end of the water outlet connector 3 is connected to the water outlet hole 901 through the outer flow channel cavity 18. The water inlet connector 2 and the water outlet connector 3 are located on the same horizontal plane and are respectively located on the left and right sides of the valve body 1. The drain connector 4 is located between the water inlet connector 2 and the water outlet connector 3, and the drain connector 4 is located below the water inlet connector 2 and the water outlet connector 3. One end of the drain connector 4 is connected to the drain hole 904 through the outer flow channel cavity 18.

[0057] The top of the valve body 1 is rotationally connected to the top of the movable valve cylinder 10. The movable valve cylinder 10 includes a sealing plate 13, an outer cylinder 11 and an inner cylinder 12 which are sealingly and fixedly connected to the bottom of the sealing plate 13. The outer cylinder 11 is coaxially sleeved outside the inner cylinder 12. The outer cylinder 11 is rotationally inserted into the fixed valve cylinder 9 and sealingly connected to the fixed valve cylinder 9. The top of the outer cylinder 11 and the top of the inner cylinder 12 are provided with sealing structures and are sealingly and fixedly connected. A second inner flow channel cavity 22 with an open lower end is formed between the outer cylinder 11 and the inner cylinder 12.

[0058] The outer wall of the outer cylinder 11 is provided with a fifth water passage hole 14 and a sixth water passage hole 17 which are in communication with the second inner flow channel cavity 22. The side walls of the outer cylinder 11 and the inner cylinder 12 are provided with a first straight-through hole 15 and a second straight-through hole 16 which are used to directly connect and isolate the outer flow channel cavity 18 and the inside of the inner cylinder 12 from the second inner flow channel cavity 22.

[0059] The fifth water passage hole 14 and the second straight-through hole 16 are located in the same horizontal plane, and the sixth water passage hole 17 and the first straight-through hole 15 are located in the same horizontal plane. The fifth water passage hole 14 corresponds to the first straight-through hole 15 in an up-down direction, and the second straight-through hole 16 corresponds to the sixth water passage hole 17 in the up-down direction.

[0060] The lower end of the outer cylinder 11 is located above the connecting rod 20 and is spaced from the connecting rod 20, so that the water flow can flow faster between the connecting rod 20. The lower end of the inner cylinder 12 penetrates the outer cylinder 11 and is rotationally and sealingly connected to the second filter element interface 6. The second inner flow channel cavity 22 is in communication with the first inner flow channel cavity 21 in an up-down direction.

[0061] Working principle: in use, the first filter core interface 5 is connected with the tank opening of the filter tank, the second filter core interface 6 is connected with the center tube in the filter tank, the filter tank is provided with a filter layer or other filter structure, and the lower end of the center tube is located in the filter layer. The filter tank is a prior art, and its specific structure will not be described in detail here.

[0062] The valve cylinder 10 has a filtering position, a backwashing position and a forward washing position in its rotating stroke. Moreover, when the valve cylinder 10 is in the normal filtering position, the valve cylinder 10 is rotated counterclockwise by 90 degrees or clockwise by 270 degrees to be in the backwashing position. When the valve cylinder 10 is in the filtering position, the valve cylinder 10 is rotated clockwise by 90 degrees or counterclockwise by 270 degrees to be in the forward washing position; or, when the valve cylinder 10 is in the backwashing position, the valve cylinder 10 is rotated counterclockwise by 180 degrees or clockwise by 180 degrees to be in the forward washing position.

[0063] Normal filtering state: as shown in FIG. 13, when the valve cylinder 10 is in the filtering position, the water inlet connector 2, the outer flow channel cavity 18, the first water passing hole 902, the third water passing hole 905, the fifth water passing hole 14, the sixth water passing hole 17, the second inner flow channel cavity 22 and the first inner flow channel cavity 21 are communicated, the inside of the inner cylinder 12, the second straight-through hole 16 and the water outlet connector 3 are communicated, and the second water passing hole 903, the drain hole 904 and the fourth water passing hole 906 are blocked by the valve cylinder 10.

[0064] At this time, the flow direction of the water flow is: the water inlet connector 2- the outer flow channel cavity 18- the first water passing hole 902- the sixth water passing hole 17- the second inner flow channel cavity 22- the first inner flow channel cavity 21- the first filter core interface 5- the filter tank body; meanwhile, the water flow in the outer flow channel cavity 18 can also enter the filter tank body through the third water passing hole 905- the fifth water passing hole 14- the second inner flow channel cavity 22- the first inner flow channel cavity 21- the first filter core interface 5.

[0065] The water flow seeps through the filter layer from top to bottom and is filtered, and under the pressure of the upper part, the filtered water enters the center tube from the lower port of the center tube, then enters the inner cylinder 12 along the center tube and through the second filter core interface 6, and then is discharged through the inner cylinder 12- the second straight-through hole 16- the water outlet connector 3.

[0066] Backwash state: when the valve cylinder 10 is in the normal filtering position, the valve cylinder 10 is rotated counterclockwise by 90 degrees or clockwise by 270 degrees to be in the backwash position. At this time, as shown in Figure 14, the water inlet joint 2, the outer flow channel cavity 18, the second water passing hole 903, the second straight-through hole 16, the fourth water passing hole 906, the first straight-through hole 15 and the interior of the inner cylinder 12 are communicated, the first inner flow channel cavity 21, the second inner flow channel cavity 22, the sixth water passing hole 17, the drain hole 904 and the drain outlet joint 4 are communicated, and the fifth water passing hole 14, the water outlet hole 901, the first water passing hole 902 and the third water passing hole 905 are blocked by the valve cylinder 10.

[0067] At this time, the flow direction of the water flow is: the water inlet joint 2- the outer flow channel cavity 18- the fourth water passing hole 906- the first straight-through hole 15- the inner cylinder 12- the second filter element interface 6- the central pipe of the filter tank.

[0068] The water discharged from the bottom of the central pipe penetrates the filter layer from bottom to top under the pressure, carries out the impurities in the filter layer, and then is discharged after passing through the tank opening of the filter tank- the first filter element interface 5- the first inner flow channel cavity 21- the second inner flow channel cavity 22- the sixth water passing hole 17- the drain outlet joint 4.

[0069] Positive washing state: when the valve cylinder 10 is in the filtering position, the valve cylinder 10 is rotated clockwise by 90 degrees or counterclockwise by 270 degrees to be in the positive washing position; or, when the valve cylinder 10 is in the backwash position, the valve cylinder 10 is rotated counterclockwise by 180 degrees or clockwise by 180 degrees to be in the positive washing position. At this time, as shown in Figure 15, the water inlet joint 2, the outer flow channel cavity 18, the fourth water passing hole 906, the sixth water passing hole 17, the second inner flow channel cavity 22 and the first inner flow channel cavity 21 are communicated, the second water passing hole 903 and the fifth water passing hole 14, the second inner flow channel cavity 22, the first inner flow channel cavity 21 are communicated in sequence, the drain outlet joint 4 is communicated with the interior of the inner cylinder 12 through the drain hole 904 and the first straight-through hole 15, and the water outlet hole 901, the first water passing hole 902, the third water passing hole 905 and the second straight-through hole 16 are blocked by the valve cylinder 10.

[0070] At this time, the flow direction of the water flow is: the water inlet joint 2- the outer flow channel cavity 18- the fourth water passing hole 906- the sixth water passing hole 17- the second inner flow channel cavity 22- the first inner flow channel cavity 21- the first filter element interface 5- above the filter layer in the filter tank. At the same time, another water inlet path is: the water inlet joint 2- the outer flow channel cavity 18- the second water passing hole 903- the fifth water passing hole 14- the second inner flow channel cavity 22- the first inner flow channel cavity 21- the first filter element interface 5- above the filter layer in the filter tank.

[0071] The water flows from top to bottom through the filter layer in the filter tank, and is filtered. Under the pressure of the upper part, the filtered water enters the central tube from the lower port of the central tube, and then enters the inner cylinder 12 along the central tube, passes through the second filter core interface 6, and then passes through the inner cylinder 12-first straight-through hole 15-drainage hole 904-drainage port connector 4, and is discharged.

[0072] The filter valve of the present application has no structural obstruction in the flow path of the water flowing out of the inner cylinder 12 or flowing into the inner cylinder 12, and can fully utilize the entire horizontal cross-sectional water area of the second filter core interface 6. Under the condition of the same valve body cross-sectional area, the water treatment efficiency is higher, and the water treatment efficiency is higher. Compared with the existing water treatment control valve, under the condition of the same valve body cross-sectional area, the water output of the filter valve of the present application can be maximized in unit time, and the water treatment efficiency is improved. In addition, under the condition of realizing the same effective water output at the second filter core interface 6, the volume of the filter valve of the present application can be made smaller.

[0073] In use, the filter valve of the present application has only to rotate the movable valve cylinder by a certain angle through the three-layer gap cooperation of the outer-middle-inner of the valve body, the fixed valve cylinder and the movable valve cylinder, so as to realize the quick switching of the three states of filtering, backwashing and forward flushing, and to automatically block the water passage hole, the straight-through hole or the water outlet hole not used in this state, without the need to set a valve for blocking, thereby saving the cost.

[0074] Embodiment 2: A single-valve-body high-efficiency filter valve, which is different from embodiment 1 in that the drainage port connector 4 is located above the water inlet connector 2 and the water outlet connector 3, and the positions of the water passage hole, the straight-through hole and the water outlet hole are adjusted accordingly. The other structures are the same as those of embodiment 1.

[0075] It is obvious to those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be regarded as exemplary and non-limiting, and the scope of the present application is defined by the appended claims, not by the above description, and all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application. Any reference signs in the claims should not be regarded as limiting the claims involved.

Claims

1. A single valve body high efficiency filter valve characterized by: The valve body (1) and the rotating seal valve cylinder (10) are coaxially arranged in the valve body (1), the valve body (1) and the valve cylinder (10) are both open at the bottom and sealed at the top, the outer diameter of the valve cylinder (10) is smaller than the inner diameter of the valve body (1); The valve body (1) is coaxially provided with a lower and upper through valve cylinder (9), the outer diameter of the valve cylinder (9) is smaller than the inner diameter of the valve body (1), the lower end of the valve cylinder (9) is sealingly connected with the top end of the first filter core interface (5), the valve cylinder (9) and the first filter core interface (5) are internally and upwardly connected, the outer diameters of the first filter core interface (5) and the valve cylinder (9) are smaller than the inner diameter of the valve body (1), the outer wall of the first filter core interface (5) is sealingly connected with the inner wall of the valve body (1); the valve cylinder (9) and the first filter core interface (5) and the inner wall of the valve body (1) jointly form an outer flow channel cavity (18); The valve cylinder (9) is provided with a water outlet hole (901), a first water passing hole (902), a second water passing hole (903), a drain hole (904), a third water passing hole (905) and a fourth water passing hole (906), wherein the first water passing hole (902), the second water passing hole (903), the third water passing hole (905) and the fourth water passing hole (906) are all communicated with the outer flow channel cavity (18); The first filter core interface (5) is coaxially fixedly provided with a second filter core interface (6) in the inside, the outer diameter of the second filter core interface (6) is smaller than the inner diameter of the first filter core interface (5), and the second filter core interface (6) and the first filter core interface (5) form a first inner flow channel cavity (21) which is upwardly and downwardly through; The side wall of the valve body (1) is provided with a water inlet connector (2), a water outlet connector (3) and a drain connector (4), the water inlet connector (2) is correspondingly and spacedly arranged in and out of the third water passing hole (905), one end of the water outlet connector (3) penetrates through the outer flow channel cavity (18) and is directly connected with the water outlet hole (901), and one end of the drain connector (4) penetrates through the outer flow channel cavity (18) and is directly connected with the drain hole (904); The top of the valve body (1) is rotationally connected with the top of the valve cylinder (10), the valve cylinder (10) comprises a coaxially sleeved outer cylinder (11) and an inner cylinder (12), the outer cylinder (11) is rotationally inserted into the valve cylinder (9), and the outer cylinder (11) is sealingly connected with the valve cylinder (9), the top of the outer cylinder (11) and the top of the inner cylinder (12) are both provided with a sealing structure, and the top of the outer cylinder (11) and the top of the inner cylinder (12) are sealingly and fixedly connected, and the outer cylinder (11) and the inner cylinder (12) form a second inner flow channel cavity (22) which is open at the bottom; The outer wall of the outer cylinder (11) is provided with a fifth water passing hole (14) and a sixth water passing hole (17) which are communicated with the second inner flow channel cavity (22), and the side wall of the outer cylinder (11) and the inner cylinder (12) is jointly provided with a first straight hole (15) and a second straight hole (16), the first straight hole (15) and the second straight hole (16) are used to directly connect and isolate the inner part of the outer flow channel cavity (18) and the inner cylinder (12) from the second inner flow channel cavity (22). The lower end of the outer cylinder (11) is rotatably sealed and inserted into the inside of the first filter core interface (5), and the lower end of the inner cylinder (12) is rotatably sealed and matched with the second filter core interface (6), and the second inner flow channel cavity (22) is in communication with the first inner flow channel cavity (21) in an up-down manner; The movable valve cylinder (10) has a filtering position, a backwashing position and a forward flushing position in its rotating stroke; When the movable valve cylinder (10) is in the filtering position, the water inlet joint (2), the outer flow channel cavity (18), the first water passing hole (902), the third water passing hole (905), the fifth water passing hole (14), the sixth water passing hole (17), the second inner flow channel cavity (22) and the first inner flow channel cavity (21) are in communication, the inside of the inner cylinder (12), the second straight-through hole (16) and the water outlet joint (3) are in communication, and the second water passing hole (903), the drainage hole (904) and the fourth water passing hole (906) are blocked by the movable valve cylinder (10); When the movable valve cylinder (10) is in the backwashing position, the water inlet joint (2), the outer flow channel cavity (18), the second water passing hole (903), the second straight-through hole (16), the fourth water passing hole (906), the first straight-through hole (15) and the inside of the inner cylinder (12) are in communication, the first inner flow channel cavity (21), the second inner flow channel cavity (22), the sixth water passing hole (17) and the drainage hole (904) are in communication with the drainage joint (4), and the fifth water passing hole (14), the water outlet (901), the first water passing hole (902) and the third water passing hole (905) are blocked by the movable valve cylinder (10); When the movable valve cylinder (10) is in the forward flushing position, the water inlet joint (2), the outer flow channel cavity (18), the fourth water passing hole (906), the sixth water passing hole (17), the second inner flow channel cavity (22) and the first inner flow channel cavity (21) are in communication, the fifth water passing hole (14) is in communication with the second water passing hole (903), the drainage joint (4) is in communication with the inside of the inner cylinder (12) through the drainage hole (904) and the first straight-through hole (15), and the water outlet (901), the first water passing hole (902), the third water passing hole (905) and the second straight-through hole (16) are blocked by the movable valve cylinder (10).

2. A single valve body high efficiency filter valve as defined in claim 1 wherein: The upper end of the second filter core interface (6) is lower than the upper end of the first filter core interface (5), and the lower end of the inner cylinder (12) penetrates out of the outer cylinder (11) and is rotatably sealed and matched with the second filter core interface (6).

3. A single valve body high efficiency filter valve as claimed in claim 1 or 2 wherein: An annular support edge (19) coaxially arranged is fixedly arranged on the inside of the upper end of the first filter core interface (5), and the bottom of the fixed valve cylinder (9) is fixedly arranged on the top of the support edge (19); A connecting rod (20) extending downward is fixedly arranged on the upper end of the support edge (19), and the lower end of the connecting rod (20) extends towards the center of the support edge (19) and is fixedly connected with the outer side wall of the second filter core interface (6).

4. A single valve body high efficiency filter valve as defined in claim 3 wherein: The lower end of the outer cylinder (11) is located above the connecting rod (20) and has a space between the connecting rod (20).

5. A single body high efficiency separation valve as defined in claim 3 wherein: The lower end of the second filter core interface (6) is higher than the lower end of the first filter core interface (5), so that the lower end of the second filter core interface (6) is located in the inside of the first filter core interface (5).

6. A single body high efficiency separation valve as defined in claim 3 wherein: The lower end outer side of the second filter core interface (6) and the first filter core interface (5) are fixedly connected through a plurality of first connecting plates (7) which are arranged at intervals around the second filter core interface (6), and the first connecting plates (7) are located below the connecting rod (20).

7. A single valve body high efficiency filter valve as defined in claim 1 wherein: The water inlet joint (2) and the water outlet joint (3) are in the same horizontal plane and are respectively located on the left and right sides of the valve body (1), and the drain joint (4) is located between the water inlet joint (2) and the water outlet joint (3), and the water inlet joint (2), the water outlet joint (3) and the drain joint (4) are all staggered in the vertical direction. The fifth water passing hole (14) and the second straight-through hole (16) are in the same horizontal plane, the sixth water passing hole (17) and the first straight-through hole (15) are in the same horizontal plane, and the fifth water passing hole (14) corresponds to the first straight-through hole (15) in the vertical direction, and the second straight-through hole (16) corresponds to the sixth water passing hole (17) in the vertical direction.

8. A single body high efficiency separation valve as defined in claim 1 wherein: The top of the outer cylinder (11) and the inner cylinder (12) are fixedly connected with the sealing plate (13) in common.

9. A single valve body high efficiency filter valve as claimed in claim 1 or 8 wherein: The top of the valve body (1) is rotatably sealed and penetrates a vertical rotating shaft, the lower end of the rotating shaft is fixedly connected with the top of the movable valve cylinder (10), the upper end of the rotating shaft is located outside the valve body (1), a rotating driving device is fixedly arranged outside the valve body (1), the rotating driving device is in transmission connection with the rotating shaft, and the rotating driving device is used to drive the rotating shaft to rotate.

10. A single valve body high efficiency filter valve as defined in claim 1 wherein: When the movable valve cylinder (10) is in the filtering position, the movable valve cylinder (10) is rotated counterclockwise by 90 degrees or clockwise by 270 degrees to be in the backwashing position; When the movable valve cylinder (10) is in the filtering position, the movable valve cylinder (10) is rotated clockwise by 90 degrees or counterclockwise by 270 degrees to be in the forward washing position; or, when the movable valve cylinder (10) is in the backwashing position, the movable valve cylinder (10) is rotated counterclockwise by 180 degrees or clockwise by 180 degrees to be in the forward washing position. When the movable valve cylinder (10) is in the filtering position, the movable valve cylinder (10) is rotated counterclockwise by 90 degrees or clockwise by 270 degrees to be in the backwashing position;

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