Commutator and multi-way valve with same

Abstract

The reverser comprises a main water pipe, a water inlet pipe, a water outlet pipe, a reversing ball and a one-way valve, the water inlet pipe and the water outlet pipe which are communicated with the main water pipe are arranged outside the main water pipe, and a caulking groove which is opened towards the direction of the main water pipe and internally provided with an outward protruding part is formed in the water outlet pipe; the reversing ball is embedded in the caulking groove and can rotate in the caulking groove, a three-way flow channel is formed in the reversing ball, and the reversing ball rotates in the caulking groove to adjust whether the three-way flow channel is communicated with the main water pipe and the water inlet pipe or not, so that switching of the working state, the bypass state and the closed state of the reverser is achieved. The invention further provides the multi-way valve. The reverser integrates multiple functions, multiple functions such as working, bypass and closing can be achieved only through one component, the number and the size of the components of the control valve are reduced, installation and arrangement in a narrow space are more convenient, space limitation is reduced, and operation is easy and convenient.

Description

Technical Field

[0001] The invention relates to the technical field of soft water treatment, and in particular to a commutator and a multi-way valve having the same. Background Art

[0002] As people's living standards continue to improve, the requirements for daily water use are also getting higher and higher. Residential water contains a large amount of calcium and magnesium ions. Long-term use of water with high hardness is harmful to the body. For example, if clothes are washed with hard water for a long time, the clothes will turn yellow and lack luster. Residential water pipes will be blocked by scale. The scale of some heating equipment will affect the heat exchange efficiency, and the equipment will be damaged over time. Reducing or removing calcium and magnesium ions in water and turning hard water into soft water will have many benefits for people's lives. For example, taking a bath with soft water will not dry the skin, and using soft water for skin care will make the skin smoother. Water heaters will also improve heat exchange efficiency and reduce maintenance costs.

[0003] For this purpose, water softening equipment is usually used to remove calcium and magnesium ions from water. The main component of water softening equipment is the control valve. Most of the existing technologies control the working, bypass and closing states of the control valve by installing an angle valve or a ball valve in the exposed water inlet and outlet pipes. The overall volume is large, the operation is troublesome, and the aesthetics is poor. Therefore, it is necessary to design a commutator that is small in size, easy to operate, and can flexibly change the direction of the inlet and outlet water. Summary of the invention

[0004] In view of the above situation, it is necessary to provide a commutator which is small in size, easy to operate, and can flexibly switch the inlet and outlet water, so as to solve the shortcomings of the prior art.

[0005] The present invention provides a commutator, which comprises a main water pipe, a water inlet pipe, a water outlet pipe, a reversing ball, and a one-way valve. The main water pipe is provided with a water inlet pipe and a water outlet pipe connected thereto on the outside, the water outlet pipe is provided with a groove which opens in the direction of the main water pipe, and a convex embedding groove is provided inside the connecting part between the main water pipe and the water inlet pipe. The reversing ball is embedded in the embedding groove and can rotate in the embedding groove. A three-way flow channel is provided in the reversing ball. The reversing ball rotates in the embedding groove to adjust whether the three-way flow channel is connected with the main water pipe and the water inlet pipe, so as to realize the conversion of the working, bypass, and closed states of the reversing ball.

[0006] Furthermore, the commutator also includes a locking nut, a connecting piece, and a retaining ring. A connecting piece is provided on the outer periphery of the water inlet pipe and the water outlet pipe. A slot is provided on the outer periphery of the connecting piece. The connecting piece is inserted into the center hole of the locking nut. The retaining ring is engaged in the slot, and the retaining ring protrudes from the surface of the connecting piece to engage and connect the locking nut and the connecting piece.

[0007] Furthermore, the water inlet pipe and the water outlet pipe are arranged in the same direction.

[0008] Furthermore, the end of the main water pipe close to the water inlet pipe is the water inlet, and the end of the main water pipe close to the water outlet pipe is the water outlet.

[0009] Furthermore, the three-way flow channel is a T-shaped structure.

[0010] Furthermore, the three-way flow channel includes a first flow channel opening, a second flow channel opening, and a third flow channel opening that are connected. The first flow channel opening and the second flow channel opening are on the same line, and the third flow channel opening is between the first flow channel opening and the second flow channel opening and is perpendicular to the two.

[0011] Furthermore, the three-way flow channel is a Y-shaped structure.

[0012] Furthermore, the connecting piece is a cylindrical structure.

[0013] Furthermore, the commutator also includes a control handle, which includes a fixedly connected handle and a connecting rod. A small through hole is opened on the main water pipe on the rear side of the groove. The end of the connecting rod passes through the small through hole and is detachably fixedly connected to the commutator ball. The small through hole and the connecting rod are sealed. The connecting rod can drive the commutator ball to rotate axially around the small through hole to realize the conversion of the commutator between the working, bypass, and closed states.

[0014] The present invention also provides a multi-way valve, comprising a commutator, which can rotate axially 360 degrees.

[0015] The beneficial effects brought about by the technical solution of the present invention are: the above-mentioned commutator integrates multiple functions into one, and multiple functions such as operation, bypass, and closing can be realized through only one component, reducing the number and volume of components of the control valve, making it easier to install and arrange in a narrow space, reducing space limitations, and simplifying operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the multi-way valve of the present invention.

[0017] Figure 2 It is an exploded view of the multi-way valve of the present invention.

[0018] Figure 3 is an exploded view of the valve body assembly of the present invention.

[0019] Figure 4 yes Figure 3 Cross-sectional view of the center base.

[0020] Figure 5 yes Figure 3 Schematic diagram of the structure of the middle cover in another direction.

[0021] Figure 6 yes Figure 3 Schematic diagram of the structure of the valve body in another direction.

[0022] Figure 7 yes Figure 3 A schematic diagram of the structure of the middle valve body from another direction.

[0023] Figure 8 It is a structural diagram of the commutator of the present invention when it is in working state.

[0024] Fig. 9 It is a structural diagram of the commutator of the present invention in the bypass state.

[0025] Fig.10 It is a structural diagram of the commutator of the present invention when it is in a closed state.

[0026] Fig.11 It is a structural schematic diagram of the control handle of the commutator of the present invention.

[0027] Fig.12 is an exploded view of the piston assembly of the present invention.

[0028] Fig.13 It is a cross-sectional view of the first sealing frame of the present invention.

[0029] Fig.14 is a cross-sectional view of a second sealing frame of the present invention.

[0030] Fig.15 It is a cross-sectional view of the plug of the present invention.

[0031] Fig.16 It is a schematic structural diagram of the driver mechanism of the present invention.

[0032] Fig.17 yes Figure 1 Cross-sectional view at Ⅰ-Ⅰ in the middle.

[0033] Fig.18 It is a schematic diagram of the water softener of the present invention in the working position.

[0034] Fig.19 It is a schematic diagram of the water softener of the present invention when it is in the salt absorption position.

[0035] Fig. 20 It is a schematic diagram of the water softener of the present invention in the backwash position.

[0036] Fig.21 It is a schematic diagram of the water softener of the present invention when it is in the normal washing position.

[0037] Fig. 22 It is a schematic diagram of the water softener of the present invention when the salt tank is filled with water.

[0038] Fig.23 It is a schematic diagram of the water softener of the present invention in the closed position.

[0039] Fig.24It is a schematic diagram of the water softener of the present invention in the bypass position.

[0040] The reference numerals and components involved in the drawings are as follows:

[0041] 100, multi-way valve; 10, valve body assembly; 11, valve body; 111, inner cavity; 112, salt inlet; 113, drain outlet; 114, siphon installation hole; 115, water inlet slot; 116, water outlet slot; 117, center water tank; 118, side water tank; 119, raw water cavity; 110, salt cavity; 12, base; 121, side channel; 122, center channel; 13, cover plate; 132, water inlet channel; 134, water outlet channel; 136, cover plate connector;

[0042] 20. Siphon; 21. Injection port; 22. Salt suction port; 23. Mixing outlet;

[0043] 30. Reversing device; 31. Main water pipe; 311. Water inlet; 312. Water outlet; 313. Embedded groove; 314. Embedded groove through hole; 315. Through hole; 316. Small through hole; 32. Water inlet pipe; 33. Water outlet pipe; 34. Reversing ball; 342. Three-way flow channel; 343. First flow channel opening; 344. Second flow channel opening; 345. Third flow channel opening; 35. One-way valve; 36. Locking nut; 361. Center hole; 37. Connecting piece; 371. Slot; 38. Retaining ring; 39. Control handle; 391. Handle; 392. Connecting rod;

[0044] 40. Piston assembly; 41. Piston; 412. Piston cavity; 414. Piston annular groove; 42. Tie rod; 422. Tie rod annular groove; 43. Connecting structure; 431. Connecting piece; 432. Clamping hole; 433. Hollowing; 435. Connecting groove;

[0045] 50, first sealing frame; 51, first sealing grille; 512, first hollowing; 52, grille embedding groove; 53, grille sealing ring; 54, annular groove; 55, water inlet annular groove; 56, side flow annular groove; 57, drainage annular groove; 58, center annular groove; 59, water outlet annular groove;

[0046] 60, second sealing frame; 61, second sealing grille; 612, second hollowing; 614, small annular groove; 62, second grille sealing ring; 63, cover plate; 64, connector; 65, step;

[0047] 70. plug; 71. plug cavity; 72. plug through hole; 73. plug step; 74. valve body connection; 742. plug connecting through hole; 75. plug annular groove; 78. plug embedded groove; 79. plug sealing ring;

[0048] 80, drive mechanism; 81, motor; 812, output shaft; 814, pinion; 82, bracket; 821, mounting plate; 822, output shaft through hole; 825, fixing claw; 83, eccentric gear; 832, eccentric column; 84, tie rod connecting part; 842, waist-shaped hole; 85, slideway;

[0049] 200. Softening tank. DETAILED DESCRIPTION

[0050] The specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the description of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0051] Unless otherwise clearly specified and limited, the terms "disposed", "installed", "connected" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0052] The directions or positional relationships indicated by terms such as “upper”, “lower”, “left”, “right”, “front”, “back”, “top”, “bottom”, “inside” and “outside” are based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the inventive product is usually placed when used. They are only for the convenience of description and simplified description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0053] The terms "first", "second", "third" and the like are merely used to distinguish elements of similar nature, and do not indicate or imply relative importance or a particular order.

[0054] The terms "comprises," "comprising," or any other variations thereof, are intended to cover a non-exclusive inclusion of the elements listed and may also include additional elements not expressly listed.

[0055] Figure 1 is a schematic structural diagram of a multi-way valve of the present invention, Figure 2 is an exploded view of the multi-way valve of the present invention, Figure 3 is an exploded view of the valve body assembly of the present invention, Figure 4 yes Figure 3 Cross-sectional view of the middle base. Figure 5 yes Figure 3 The structural diagram of the middle cover in another direction, Figure 6 yes Figure 3 The structural diagram of the valve body in another direction. Figure 7 yes Figure 3 The structural diagram of the valve body in another direction, Figure 8 is a structural diagram of the commutator of the present invention in working state, Fig. 9 is a structural diagram of the commutator of the present invention in the bypass state, Fig.10 is a structural diagram of the commutator of the present invention when it is in a closed state, Fig.11 is a schematic structural diagram of the control handle of the commutator of the present invention, Fig.12 is an exploded view of the piston assembly of the present invention, Fig.13 is a cross-sectional view of the first sealing frame of the present invention, Fig.14 is a cross-sectional view of the second sealing frame of the present invention, Fig.15 is a cross-sectional view of the plug of the present invention, Fig.16 is a schematic diagram of the structure of the driver mechanism of the present invention, Fig.17 yes Figure 1 The cross-sectional view at Ⅰ-Ⅰ in the middle, Fig.18 is a schematic diagram of the water softener of the present invention in the working position, Fig.19 is a schematic diagram of the water softener of the present invention in the salt absorption position, Fig. 20 is a schematic diagram of the water softener of the present invention in the backwash position, Fig.21 is a schematic diagram of the water softener of the present invention in the normal washing position, Fig. 22 It is a schematic diagram of the water softener of the present invention when the salt tank is filled with water. Fig.23 is a schematic diagram of the water softener of the present invention in the closed position, Fig.24 Schematic diagram of the water softener of the present invention in the bypass position. Figures 1 to 24 As shown, the multi-way valve 100 of the present invention includes a valve body assembly 10 , a siphon 20 , a reversing device 30 , a piston assembly 40 , a first sealing frame 50 , a second sealing frame 60 , a plug 70 , and a driver mechanism 80 .

[0056] The valve body assembly 10 includes a valve body 11 , a base 12 , and a cover plate 13 .

[0057] The interior of the valve body 11 is hollow to form a cylindrical inner cavity 111, and one side of the inner cavity 111 is opened to communicate with the outside. The lower side of the valve body 11 is provided with a central water tank 117 and a side water tank 118, which are respectively connected to the inner cavity 111. The central water tank 117 and the side water tank 118 are irregularly shaped, which can make full use of the existing space of the valve body 11 while avoiding slowing down the impact of the water flow and making the water flow softer. One side parallel to the axial direction of the inner cavity 111 ( Figures 1 to 3The side wall of the valve body 11 (the rear side in the middle) is provided with a water inlet slot 115 and a water outlet slot 116, and the water inlet slot 115 and the water outlet slot 116 are respectively connected to the inner cavity 111. Figures 1 to 3 A salt inlet 112, a drain outlet 113, and a siphon installation hole 114 are provided on the side wall of the valve body 11 (the front side in the middle), the drain outlet 113 is communicated with the inner cavity 111, a raw water cavity 119 and a salt cavity 110 are provided in the side wall of the valve body 11, the raw water cavity 119 is communicated with the inner cavity 111, the salt inlet 112 is communicated with the salt cavity 110, and the siphon installation hole 114 is respectively communicated with the raw water cavity 119, the salt cavity 110, and the central water tank 117. The drain outlet 113 is usually provided on a side away from the water inlet slot 115 and the water outlet slot 116 to prevent the sewage discharged through the drain outlet 113 from contaminating the raw water in the water inlet slot 115 and the soft water in the water outlet slot 116.

[0058] The base 12 is provided with a side channel 121 and a central channel 122. The upper end of the base 12 is fixedly connected to the lower end of the valve body 11, and the fixed connection can be welding, riveting, etc., but not limited to this. The central channel 122 is connected to the central water tank 117, and the side channel 121 is connected to the side water tank 118. The lower end of the base 12 is detachably fixedly connected to the bottle mouth of the softening tank 200, and the detachable fixed connection can be a threaded connection, an interference fit connection, etc., but not limited to this. Specifically, the lower end of the base 12 and the bottle mouth of the softening tank 200 can be threadedly connected, the outer periphery of the lower end of the base 12 is provided with an external thread structure, and the bottle mouth of the softening tank 200 is provided with an internal thread structure (not shown), and the base 12 is threadedly connected to the softening tank 200. The lower end of the base 12 is sealed with the bottle mouth of the softening tank 200. A sealing ring is provided between the lower end of the base 12 and the bottle mouth of the softening tank 200 to ensure the sealing of the two.

[0059] A water outlet channel 134 is provided at the center of the cover plate 13, and an arc-shaped water inlet channel 132 is provided on the periphery of the water outlet channel 134. A circular cover plate connector 136 protruding from the cover plate is provided on the outer side of the cover plate 13. The water inlet channel 132 and the water outlet channel 134 are respectively located inside the cover plate connector 136, and the cover plate connector 136 is used to connect with the commutator 30. The side of the cover plate 13 where the cover plate connector 136 is not provided is fixedly connected to the side of the valve body 11 where the water inlet groove 115 and the water outlet groove 116 are provided, and the fixed connection can be welding, riveting, etc., but is not limited thereto. The water inlet channel 132 is connected to the water inlet groove 115, and the water outlet channel 134 is connected to the water outlet groove 116. The valve body assembly 10 can be an integrated structure, or a split structure that is fixedly connected as a whole.

[0060] The siphon 20 includes an injection port 21, a salt suction port 22 and a mixing outlet 23 at the end thereof, which are interconnected. The siphon 20 is inserted into the siphon installation hole 114, the injection port 21 is connected to the raw water chamber 119, the salt suction port 22 is connected to the salt chamber 110, and the mixing outlet 23 is connected to the central water tank 117. When the siphon 20 is working, the siphon 20 generates negative pressure, sucks the raw water in the raw water chamber 119 into the injection port 21, and the salt water in the salt chamber 110 into the salt suction port 22. The salt water is mixed with the raw water to form diluted salt water (referred to as dilute salt water), which flows out of the mixing outlet 23 and enters the central water tank 117.

[0061] The reversing device 30 includes a main water pipe 31 , a water inlet pipe 32 , a water outlet pipe 33 , a reversing ball 34 , a one-way valve 35 , a locking nut 36 , a connecting piece 37 , and a retaining ring 38 .

[0062] One end of the main water pipe 31 is a water inlet 311, and the other end is a water outlet 312. The water inlet 311 is connected to raw water, and the water outlet 312 discharges soft water or raw water. An embedded groove 313 is provided inside the main water pipe 31. The main water pipe 31 on the outer periphery of the embedded groove 313 protrudes outward. The reversing ball 34 is embedded in the embedded groove 313. The size and shape of the embedded groove 313 match the size and shape of the reversing ball 34. The reversing ball 34 can rotate in the embedded groove 313, and the outer wall of the reversing ball 34 and the groove wall of the embedded groove 313 are sealed. The reversing ball 34 divides the main water pipe 31 into a water inlet part and a water outlet part. The end opening of the main water pipe 31 corresponding to the water inlet part is the water inlet 311, and the end opening of the main water pipe 31 corresponding to the water outlet part is the water outlet 312. The embedding groove 313 is provided with an embedding groove through hole 314, which is connected to the embedding groove 313. The water inlet pipe 32 is outside the main water pipe 31, and one end of the water inlet pipe 32 is sealed and connected to the main water pipe 31 outside the embedding groove through hole 314, and the water inlet pipe 32 is connected to the embedding groove 313 (main water pipe 31). A through hole 315 is provided on the wall of the main water pipe 31 between the water outlet 312 and the embedding groove 313 (commutation ball 34), and the through hole 315 is connected to the main water pipe 31. The water outlet pipe 33 is outside the main water pipe 31, and one end of the water outlet pipe 33 is sealed and connected to the main water pipe 31 outside the through hole 315, and the water outlet pipe 33 is connected to the water outlet part of the main water pipe 31. The water inlet pipe 32 and the water outlet pipe 33 are respectively outside the main water pipe 31 and close to each other in the same direction.

[0063] A one-way valve 35 that opens in one direction toward the main water pipe 31 is provided in the water outlet pipe 33 . The one-way valve 35 allows the liquid in the water outlet pipe 33 to flow toward the main water pipe 31 but does not allow backflow.

[0064] A connector 37 is provided on the periphery of the water inlet pipe 32 and the water outlet pipe 33. A slot 371 is provided on the periphery of the connector 37. The shape of the connector 37 matches the shape of the center hole 361 of the locking nut 36. The connector 37 is a cylindrical structure. The connector 37 is inserted into the center hole 361. The water inlet pipe 32 and the water outlet pipe 33 are also in the center hole 361. The slot 371 is in the locking nut 36. The retaining ring 38 is engaged in the slot 371 and the periphery of the retaining ring 38 protrudes from the surface of the connector 37 to engage and connect the locking nut 36 with the connector 37. The retaining ring 38 contacts the slot 371 and the inner surface of the locking nut 36 on the periphery of the center hole 361 respectively. When the connector 37 is connected to the locking nut 36, the sealing between the connector 37 and the locking nut 36 is also ensured. The locking nut 36 can rotate 360 ​​degrees relative to the connector 37 axially. The connecting piece 37, the water inlet pipe 32 and the water outlet pipe 33 can be processed as an integral structure or a split structure.

[0065] The locking nut 36 is detachably fixedly connected to the cover plate connector 136. The detachable fixed connection may be a threaded connection or an interference fit connection, but is not limited thereto. If a threaded connection is adopted, an outer thread structure is provided on the outer periphery of the cover plate connector 136, and the locking nut 36 is provided with an inner thread structure, and the two are threadedly connected. If an interference fit connection is adopted, the cover plate connector 136 is inserted into the locking nut 36, and the two are connected as a whole by interference fit. The locking nut 36 and the cover plate connector 136 are kept sealed.

[0066] After the diverter 30 and the valve body assembly 10 are connected, the connecting piece 37 (the diverter 30 except the locking nut 36) can rotate 360° around the axial direction of the locking nut 36, so as to be flexibly rotated to a suitable position or direction according to the needs of the external pipeline to facilitate the installation of the multi-way valve 100.

[0067] A three-way flow channel 342 is provided in the reversing ball 34. In this embodiment, the three-way flow channel 342 is in a T-shaped structure. In other embodiments, the three-way flow channel 342 may also be in a Y-shaped structure, but is not limited thereto. The three-way flow channel 342 includes a first flow channel opening 343, a second flow channel opening 344, and a third flow channel opening 345 that are connected. The first flow channel opening 343 and the second flow channel opening 344 are in a colinear line. The third flow channel opening 345 is between the first flow channel opening 343 and the second flow channel opening 344 and is perpendicular to the first flow channel opening 343 and the second flow channel opening 344.

[0068] When the commutator ball 34 is rotated and adjusted in the embedded groove 313, the switching of the commutator 30 between the working state, the bypass state, and the closed state is realized. Specifically, when the commutator ball 34 is adjusted, the third flow channel opening 345 is connected with the water inlet 311 (the water inlet part of the main water pipe 31), the first flow channel opening 343 is connected with the embedded groove through hole 314 (the water inlet pipe 32), the second flow channel opening 344 is disconnected, and the commutator 30 is in the working state; when the commutator ball 34 is adjusted, the first flow channel opening 343 is connected with the water inlet 311 (the water inlet part of the main water pipe 31), the second flow channel opening 344 is connected with the water outlet 312 ( The water outlet of the main water pipe 31 is connected, the third flow channel opening 345 is disconnected, and the diverter 30 is in a bypass state, which is usually used when the valve body assembly 10 and other components are repaired but the water supply does not need to be stopped to avoid affecting the use due to the water supply stop; adjust the reversing ball 34, the first flow channel opening 343, the second flow channel opening 344, and the third flow channel opening 345 are not connected to the water inlet 311 (the water inlet part of the main water pipe 31), and the diverter 30 is in a closed state (see Figures 8 to 10 ).

[0069] The commutator 30 further includes a control handle 39, which includes a fixedly connected handle 391 and a connecting rod 392. A small through hole 316 is provided on the main water pipe 31 at the rear side of the embedded groove 313. The end of the connecting rod 392 passes through the small through hole 316 and is detachably fixedly connected to the commutator ball 34. A sealing gasket (not shown) is provided between the small through hole 316 and the connecting rod 392 to maintain sealing. The connecting rod 392 can drive the commutator ball 34 to rotate 360° around the axial direction of the small through hole 316 to realize the conversion of the working, bypass, and closed states of the commutator 30. It can be understood that the control handle 39 does not have to be provided, as long as it can realize the control of the commutator ball 34 to complete the conversion of the working, bypass, and closed states of the commutator 30.

[0070] The commutator 30 also includes a marking part (not shown), which includes a fixed mark and a rotating mark. The fixed mark is set on the main water pipe 31 at the rear side of the embedded groove 313, and the fixed mark can be an arrow or an origin. The rotating mark is set on the handle 391, and the rotating mark can include an arrow or an origin marked with Chinese characters or English or English abbreviations of the status (working, bypass, closed).

[0071] The control handle 39 is rotated axially, and when a rotation mark on the handle 391 is aligned with a fixed mark, the state of the commutator 30 (working, bypass, closed) is also switched accordingly.

[0072] Most of the existing technologies control the switching of the working, bypass and closing states of the control valve water inlet by installing an angle valve or a ball valve on the exposed water inlet and outlet pipes, which is relatively large in size, has large installation space limitations, is troublesome to operate, and has poor aesthetics. The commutator 30 integrates multiple functions into one, and can realize multiple functions such as working, bypassing and closing through only one component, reducing the number of components and the volume of the control valve, making it easier to install and arrange in a narrow space, reducing space limitations and simplifying operation.

[0073] The piston assembly 40 includes a piston 41 , a pull rod 42 , and a connecting structure 43 .

[0074] The piston 41 is a tubular structure, and a through piston cavity 412 is provided at the center of the piston 41. A piston annular groove 414 is provided at the outer circumference of the piston 41. A pull rod annular groove 422 is provided at the outer circumference of the pull rod 42.

[0075] The connecting structure 43 connects the piston 41 and the pull rod 42 coaxially. Specifically, in the present embodiment, the connecting structure 43 includes a connecting piece 431 and a connecting groove 435. The connecting piece 431 is arranged at the cavity opening of the piston cavity 412, and a clamping hole 432 is arranged at the center of the connecting piece 431. The connecting groove 435 is arranged at one end of the pull rod 42, and the other end of the pull rod 42 is a free end. One end of the pull rod 42 provided with the connecting groove 435 extends into the piston cavity 412 from the clamping hole 432, and the connecting groove 435 is engaged with the clamping hole 432, so as to coaxially connect the piston 41 and the pull rod 42. A hollow 433 is arranged on the connecting piece 431, and the hollow 433 enables both ends of the piston cavity 412 to communicate with the outside.

[0076] It can also be understood that the connection structure 43 in the present invention does not necessarily include the connection piece 431 and the connection groove 435, and the piston 41 and the pull rod 42 can also be coaxially connected by other components, such as a threaded hole is provided in the center of the connection piece 431, and the connecting end of the pull rod 42 is provided with an external thread, and the piston 41 and the pull rod 42 are threadedly connected, but it is not limited thereto. The piston assembly 40 is inserted into the inner cavity 111 of the valve body 11.

[0077] The sealing frame of the present invention adopts a split first sealing frame 50 and a second sealing frame 60 to facilitate disassembly and replacement.

[0078] The first sealing frame 50 is a hollow cylindrical tubular structure. The first sealing frame 50 includes a plurality of first sealing grilles 51 arranged coaxially and spaced apart. The first sealing grilles 51 are provided with a first hollow 512. The spacing between the first sealing grilles 51 is determined according to specific needs. A grille sealing ring 53 is convexly provided on the inner wall of the first sealing grille 51. Specifically, a grille embedding groove 52 is provided on the inner wall of the first sealing grille 51. The grille embedding groove 52 is provided with a grille sealing ring 53. The surface of the grille sealing ring 53 protrudes from the inner wall of the first sealing grille 51. The outer periphery of the first sealing grille 51 is made of rubber or other materials that can be used for sealing. The outer wall of the first sealing grille 51 fits the wall of the inner cavity 111, and the fitting part is kept sealed. In this embodiment, there are five first sealing grilles 51. A plurality of annular grooves are formed between adjacent first sealing grilles 51 and between the first sealing grille 51 and the plug 70. From the inside to the outside, they are a water inlet annular groove 55, a side flow annular groove 56, a drainage annular groove 57, a center annular groove 58, and a water outlet annular groove 59. An annular groove 54 is formed on the inner wall of one end of the first sealing frame 50, and the annular groove 54 can engage with the cover plate 63 of the second sealing frame 60. The first sealing frame 50 is in the inner cavity 111 and sleeved outside the piston 41. A certain distance is maintained between the inner wall of the first sealing grid 51 and the piston 41, and the grid sealing ring 53 and the surface of the piston 41 without the piston annular groove 414 are sealed.

[0079] The second sealing frame 60 is also a hollow cylindrical tubular structure. The second sealing frame 60 includes at least two second sealing grids 61 coaxially spaced apart. The second sealing frame 60 is provided with a second hollow 612. In this embodiment, there are two second sealing grids 61, and a small annular groove 614 is formed between the second sealing grids 61. The spacing between the second sealing grids 61 is determined according to specific needs. The outer wall of the second sealing frame 60 is attached to the plug 70, and the attached part is kept sealed. The inner wall of the second sealing frame 60 is convexly provided with a second grid sealing ring 62. The specific structure can refer to the grid sealing ring 53 and will not be repeated. The inner wall of the second sealing grid 61 maintains a certain distance from the outer wall of the pull rod 42, and the second grid sealing ring 62 can maintain a seal with the surface of the pull rod 42 without the pull rod annular groove 422.

[0080] A cover plate 63 is convexly provided on the outer periphery of one end of the second sealing frame 60. The shape and size of the cover plate 63 match the shape and size of the annular groove 54. The cover plate 63 is inserted into the annular groove 54 to realize the snap connection between the second sealing frame 60 and the first sealing frame 50. An annular connector 64 is coaxially provided on the other end of the second sealing frame 60. The outer diameter of the connector 64 is smaller than the outer diameter of the second sealing grille 61. A step 65 is formed between the connector 64 and the second sealing grille 61. The second sealing frame 60 is sleeved on the pull rod 42, and the cover plate 63 is inserted into the annular groove 54.

[0081] The plug 70 is used to limit the first sealing frame 50, the second sealing frame 60, and the piston 41 in the inner cavity 111. The plug 70 is cylindrical, and a plug cavity 71 is provided at the center of one side of the plug 70, and a coaxial plug through hole 72 is provided at the center of the bottom of the plug cavity 71. A plug step 73 is formed between the plug cavity 71 and the plug through hole 72, and the plug through hole 72 is connected with the plug cavity 71. An annular valve body connecting portion 74 is convexly provided on the outer periphery of the side of the plug 70 where the plug cavity 71 is not provided (i.e., the side of the plug through hole 72), and plug connecting through holes 742 are uniformly provided on the valve body connecting portion 74. The valve body connecting portion 74 abuts against the valve body 11, and bolts pass through the plug connecting through holes 742 to fix the plug 70 and the valve body 11 (the two are connected for matching, and the valve body 11 is provided with a threaded hole).

[0082] At least one plug annular groove 75 is formed on the outer wall of the plug 70, and plug sealing rings 79 are protruded on the outer wall of the plug 70 on both sides of the plug annular groove 75. Specifically, a plug embedding groove 78 is formed on the outer wall of the plug 70, and a plug sealing ring 79 protruding from the outer wall of the plug 70 is provided in the plug embedding groove 78. A plug hollow is provided in the plug annular groove 75, and the plug hollow connects the plug annular groove 75 with the plug cavity 71. The outer wall of the plug 70 is sealed with the inner wall of the inner cavity 111.

[0083] The second sealing frame 60 is inserted into the plug cavity 71, the connecting head 64 is in the plug through hole 72, the free end of the pull rod 42 extends from the plug through hole 72, the step 65 rests on the plug step 73, the outer periphery of the second sealing grid 61 is sealed with the inner wall of the plug cavity 71, the end of the plug 70 rests on the first sealing frame 50, and the plug sealing ring 79 is sealed with the inner cavity 111.

[0084] The drive mechanism 80 is an eccentric transmission mechanism and includes a motor 81 , a bracket 82 , an eccentric gear 83 , a pull rod connection portion 84 , and a slideway 85 .

[0085] The bracket 82 is outside the plug 70 and is detachably fixed to the plug 70. The eccentric gear 83 and the motor 81 are respectively fixed to the two sides of the bracket 82 ( Fig.16 The output shaft 812 of the motor 81 extends from the rear side of the bracket 82 to the front side, and a coaxial pinion 814 is provided at the end of the output shaft 812. The pinion 814 meshes with the eccentric gear 83. The eccentric gear 83 can rotate axially under the drive of the pinion 814, and an eccentric column 832 is provided on the eccentric gear 83.

[0086] The pull rod connection part 84 is detachably fixedly connected to the free end of the pull rod 42, and the detachable fixed connection can be a threaded connection, a pin connection, etc., but is not limited thereto. The pull rod connection part 84 is provided with a waist-shaped hole 842 perpendicular to the direction of the slideway 85, and the surface of the waist-shaped hole 842 is smooth. The slideway 85 is fixed to the front side of the bracket 82 (the same side as the eccentric gear 83), and the pull rod connection part 84 is limited in the slideway 85 and can move along the slideway 85. At the same time, the eccentric column 832 is inserted into the waist-shaped hole 842 and can move in the waist-shaped hole 842. Since the eccentric column 832 rotates around the axial center of the eccentric gear 83, the eccentric column 832 moves horizontally and vertically. The horizontal movement of the eccentric column 832 can drive the pull rod connection part 84 to move along the slideway 85, thereby realizing the axial movement of the piston assembly 40, and the vertical movement of the eccentric column 832 is realized by the movement of the eccentric column 832 in the waist-shaped hole 842.

[0087] Specifically, in this embodiment, the bracket 82 may be a sheet structure, the bracket 82 includes a mutually perpendicular mounting piece 821 and a fixing claw 825, the fixing claw 825 is detachably fixedly connected to the plug 70, the mounting piece 821 is vertical, the mounting piece 821 is provided with an output shaft through hole 822, the motor 81 is fixed to the rear side of the mounting piece 821, the output shaft 812 of the motor 81 extends from the output shaft through hole 822 to the front side of the mounting piece 821, the eccentric gear 83 is fixed to the front side of the mounting piece 821, and the pinion 814 at the end of the output shaft 812 is meshed with the eccentric gear 83. It can be understood that the specific shape of the bracket 82 in the present invention is not limited, as long as it can meet the installation of other components and realize the corresponding functions.

[0088] The motor 81 drives the pinion 814 to rotate axially, and the eccentric gear 83 rotates axially under the drive of the pinion 814. The eccentric column 832 rotates around the axial center of the eccentric gear 83 (eccentric motion), driving the pull rod connection part 84 to move along the slide 85, realizing the axial movement of the piston assembly 40, and realizing the passage of different states of the multi-way valve 100.

[0089] The drive mechanism 80 also includes a control unit (not shown), which is electrically connected to the motor 81. The control unit can control the motor 81 to work and adjust the multi-way valve 100 to different positions such as the working position, salt absorption position, backwash position, forward wash position, salt tank water filling position, and stop position.

[0090] The assembly method of the multi-way valve 100 of the present invention:

[0091] The locking nut 36 of the commutator 30 is fixedly connected to the cover plate connector 136 of the valve body assembly 10 , and the water inlet pipe 32 is communicated with the water inlet channel 132 .

[0092] The first sealing frame 50 is placed in the inner cavity 111 of the valve body assembly 10, the outer wall of the first sealing grid 51 fits with the wall of the inner cavity 111 to maintain sealing, the water inlet annular groove 55 is connected with the water inlet slot 115, the side flow annular groove 56 is connected with the side water slot 118, the drainage annular groove 57 is connected with the drainage port 113, the center annular groove 58 is connected with the center water slot 117, and the water outlet annular groove 59 is connected with the water outlet slot 116.

[0093] The piston 41 is inserted into the first sealing frame 50 , the free end of the pull rod 42 is outside the inner cavity 111 , a certain distance is maintained between the inner wall of the first sealing grid 51 and the piston 41 , and the grid sealing ring 53 is sealed with the surface of the piston 41 without the piston annular groove 414 .

[0094] The second sealing frame 60 is sleeved on the pull rod 42, the cover plate 63 is inserted into the annular groove 54, the connecting head 64 faces outward, a certain distance is maintained between the inner wall of the second sealing grid 61 and the outer wall of the pull rod 42, and the second grid sealing ring 62 is sealed with the surface of the pull rod 42 without the pull rod annular groove 422.

[0095] The second sealing frame 60 is inserted into the plug cavity 71, the connecting head 64 is in the plug through hole 72, the free end of the pull rod 42 extends from the plug through hole 72, the step 65 rests on the plug step 73, the outer periphery of the second sealing grid 61 is sealed with the inner wall of the plug cavity 71, the end of the plug 70 rests on the first sealing frame 50, and the plug sealing ring 79 is sealed with the inner cavity 111.

[0096] The plug 70 is sleeved on the second sealing frame 60, the connecting head 64 is inserted into the plug through hole 72, the free end of the pull rod 42 passes through the plug cavity 71 and then extends out from the plug through hole 72, the plug step 73 abuts on the step 65, the outer wall of the plug 70 is sealed with the inner wall of the inner cavity 111, the outer periphery of the second sealing grid 61 is sealed with the inner wall of the plug cavity 71, the plug 70 abuts on the first sealing frame 50, the plug sealing ring 79 is sealed with the inner cavity 111, the end of the plug 70 abuts on the first sealing frame 50, the valve body connecting part 74 abuts on the valve body 11, the plug 70 is threadedly connected to the valve body 11, and the plug annular groove 75 is connected to the small annular groove 614.

[0097] The motor 81, the eccentric gear 83, and the slideway 85 are fixed on the bracket 82, the bracket 82 is fixed on the plug 70, the pinion 814 of the motor 81 is meshed with the eccentric gear 83, the pull rod connecting part 84 is fixed on the free end of the pull rod 42, the pull rod connecting part 84 is limited in the slideway 85, and the eccentric column 832 is inserted into the waist-shaped hole 842.

[0098] Some of the above installation steps can be adjusted as needed and are not limited to the above sequence.

[0099] The present invention also includes a water softener, which includes a multi-way valve 100, a softening tank 200, and a salt tank (not shown in the figure), the softening tank 200 is detachably connected to the base 12 of the valve body assembly 10 of the multi-way valve 100, and the salt tank is connected to the salt inlet 112 of the valve body assembly 10 of the multi-way valve 100.

[0100] The water softener (multi-way valve 100) control method of the present invention comprises:

[0101] Adjust the commutator 30 to be in working state (the water inlet slot 115 is connected to the raw water).

[0102] The motor 81 controls the piston assembly 40 to move and stay at the working position, and the raw water enters the softening tank 200 to be softened into soft water.

[0103] When the softening capacity of the softener decreases, the motor 81 controls the piston assembly 40 to move and stay at the salt absorption position, and the siphon 20 generates negative pressure to reversely absorb the raw water and salt water into the softening tank 200 to regenerate the softener.

[0104] After the softener has finished absorbing salt and renaturing, the motor 81 controls the piston assembly 40 to move and stay at the backwash position, and the raw water backwashes (reverse flushes) the softener in the softening tank 200 and discharges the remaining dilute brine out of the multi-way valve 100.

[0105] After the backwash is completed, the motor 81 controls the piston assembly 40 to move and stay in the forward wash position, and the raw water flushes forward to compact the loose softener.

[0106] After the forward flushing is completed, the motor 81 controls the piston assembly 40 to move and stay at the salt tank water filling level, and soft water flows into the salt tank to dissolve the solid salt therein to form brine for standby use.

[0107] When soft water is not needed or the softening tank 200 is under maintenance, the motor 81 controls the piston assembly 40 to move and stay in the closed position or to move and stop and stay in the bypass position, and the softening tank 200 has no water inlet passage.

[0108] When the softener in the softening tank 200 is replaced or the rear end pipeline of the multi-way valve 100 is damaged and leaking, the motor 81 controls the piston assembly 40 to move and stay in the closed position, and a water inlet passage cannot be formed in the multi-way valve 100, and the water softener does not work.

[0109] When raw water is used instead of soft water, the motor 81 controls the piston assembly 40 to move and stay at the bypass position, so that the raw water flows out directly without passing through the softening tank 200; and the commutator 30 is adjusted to be in the bypass or closed state.

[0110] See also Fig.18As shown, the motor 81 controls the piston assembly 40 to move and stay at the working position. At this time, the piston annular groove 414 is connected to the water inlet annular groove 55 and the side flow annular groove 56 through the first hollow 512 of the first sealing frame 50; the central annular groove 58 is not blocked by the piston 41, and the central annular groove 58 and the water outlet annular groove 59 form a passage.

[0111] The raw water enters the softening tank 200 through the water inlet 311, the third flow channel 345, the first flow channel 343, the water inlet pipe 32, the water inlet channel 132, the water inlet slot 115, the water inlet annular slot 55, the piston annular slot 414, the side flow annular slot 56, the side water slot 118, and the side channel 121 in sequence. The raw water becomes soft water (softened water is soft water) after being softened by the softener (resin and / or activated carbon) in the softening tank 200. The soft water flows out through the central channel 122, the central water slot 117, the central annular slot 58, the water outlet annular slot 59, the water outlet slot 116, the water outlet channel 134, the water outlet pipe 33, the one-way valve 35, and the water outlet 312. The water softener is in the working position, and the raw water enters the softening tank 200 and is softened to become soft water.

[0112] See also Fig.19 As shown, when the softening capacity of the water softener decreases, the motor 81 controls the piston assembly 40 to move and stay at the salt absorption position, and the siphon 20 generates negative pressure when working, and the raw water and salt water are reversely sucked into the softening tank 200 to regenerate the softener. At this time, the central annular groove 58 (central water groove 117) is blocked by the piston 41 and cannot form a passage, while the water inlet groove 115 is not blocked by the piston 41, and the water inlet annular groove 55 (water inlet groove 115) is connected to the piston cavity 412 through the first hollow 512 of the first sealing frame 50, and the piston cavity 412 is connected to the raw water cavity 119 through the hollow 433 of the piston assembly 40 and the first hollow 512 of the first sealing frame 50; in addition, the piston annular groove 414 is connected to the side flow annular groove 56 and the drainage annular groove 57 through the first hollow 512 of the first sealing frame 50.

[0113] The siphon 20 generates negative pressure when it is working. Raw water is sucked into the injection port 21 of the siphon 20 through the water inlet 311, the third flow channel port 345, the first flow channel port 343, the water inlet pipe 32, the water inlet channel 132, the water inlet slot 115, the water inlet annular slot 55, the piston chamber 412, and the raw water chamber 119. At the same time, the salt water in the salt water tank is sucked into the salt suction port 22 of the siphon 20 through the salt inlet 112 and the salt chamber 110. The salt water is mixed with the raw water to form a dilute salt water and discharged from the mixed water outlet of the siphon 20. 23 flows out, and then passes through the central water tank 117 and the central channel 122 in sequence to enter the softening tank 200, the dilute brine and the impurity ions adsorbed by the softener (resin) undergo ion exchange, the salt ions enter the softener (resin), the impurity ions enter the dilute brine, the softener (resin) is renatured and regenerated, and the dilute brine containing impurity ions passes through the side channel 121, the side water tank 118, the side flow annular groove 56, the piston annular groove 414, the drainage annular groove 57, and the drainage port 113 in sequence to discharge the valve body assembly 10. The dilute brine renatures the softener in the softening tank 200 until the discharge liquid at the drainage port 113 is basically dilute brine without impurity ions, and the softener has completed salt absorption and renaturation.

[0114] See also Fig. 20 As shown, after the softener has completed salt absorption and regeneration, the motor 81 controls the piston assembly 40 to move and stay in the backwash position. At this time, the water inlet slot 115 is still not blocked by the piston 41, and the water inlet annular groove 55 (water inlet slot 115) is connected to the piston cavity 412; the central annular groove 58 (central water groove 117) is no longer blocked by the piston 41, and the central annular groove 58 (central water groove 117) forms a passage with the piston cavity 412; in addition, the piston annular groove 414 is connected to the side flow annular groove 56 and the drainage annular groove 57 through the first hollow 512 of the first sealing frame 50.

[0115] The raw water enters the softening tank 200 through the water inlet 311, the third flow channel 345, the first flow channel 343, the water inlet pipe 32, the water inlet channel 132, the water inlet slot 115, the water inlet annular slot 55, the piston chamber 412, the central annular slot 58, the central water tank 117, and the central channel 122, and rinses the dilute brine containing impurity ions in the softening tank 200. The rinse liquid passes through the side channel 121, the side water tank 118, the side flow annular slot 56, the piston annular slot 414, the drainage annular slot 57, and the drainage port 113 to discharge the valve body assembly 10. The raw water reversely rinses the softener in the softening tank 200, and discharges the residual dilute brine therein from the multi-way valve 100 until the salt content in the discharge liquid from the drainage port 113 is negligible, and the backwashing is completed.

[0116] See also Fig.21As shown, after the backwash is completed, the motor 81 controls the piston assembly 40 to move and stay in the forward wash position. Since the softener that has undergone backwashing is relatively loose, it is necessary to flush forward (forward wash) to compact the softener. At this time, the piston 41 exposes the water inlet annular groove 55 and the side flow annular groove 56, and the water inlet annular groove 55, the side flow annular groove 56, and the side water groove 118 form a passage (the water inlet annular groove 55 and the side flow annular groove 56 are connected through the first hollow 512 of the first sealing frame 50); in addition, the passage between the center annular groove 58 (center water groove 117) and the piston cavity 412 is blocked by the piston 41, while the drainage annular groove 57, the piston annular groove 414, and the center annular groove 58 form a passage through the first hollow 512 of the first sealing frame 50.

[0117] The raw water enters the softening tank 200 through the water inlet 311, the third flow channel 345, the first flow channel 343, the water inlet pipe 32, the water inlet channel 132, the water inlet slot 115, the water inlet annular slot 55, the side flow annular slot 56, the side water slot 118, and the side channel 121, and the forward flushing (forward washing) compacts the softener in the softening tank 200. The liquid after the forward washing passes through the central channel 122, the central water slot 117, the central annular slot 58, the piston annular slot 414, the drainage annular slot 57, and the drainage port 113 to discharge the valve body assembly 10. Since the liquid coming out of the forward washing process is not completely softened or may contain trace amounts of salt ions, the forward washing liquid needs to be discharged from the drainage port 113.

[0118] See also Fig. 22 As shown, the motor 81 controls the piston assembly 40 to move and stay at the salt tank filling level. After the softener absorbs salt and regenerates, the salt water in the salt tank has been exhausted, and solid salt needs to be added to the salt tank, and then the salt tank is filled with water to form salt water for the next salt absorption and regeneration. In order to avoid contamination by impurities in the raw water, soft water is required to prepare the salt water. The salt tank filling level does not affect the normal operation of the water softener, and water is also added to the salt tank.

[0119] At this time, the center annular groove 58 (center water groove 117) is not blocked by the piston 41, and the center water groove 117, the center annular groove 58, and the water outlet annular groove 59 form a passage, and the center water groove 117, the center annular groove 58, the pull rod annular groove 422, and the plug annular groove 75 form a passage; the second grille sealing ring 62 is aligned with the second grille sealing ring 62 and a gap is generated, the pull rod 42 does not block the plug annular groove 75, and the center water groove 117, the center annular groove 58, the pull rod annular groove 422, and the plug annular groove 75 form a passage; in addition, through the first hollow 512 of the first sealing frame 50, the water inlet annular groove 55, the piston annular groove 414, the side flow annular groove 56, and the side water groove 118 form a passage.

[0120] The raw water enters the softening tank 200 through the water inlet 311, the third flow channel opening 345, the first flow channel opening 343, the water inlet pipe 32, the water inlet channel 132, the water inlet slot 115, the water inlet annular slot 55, the piston annular slot 414, the side flow annular slot 56, the side water slot 118, and the side channel 121 in sequence. The raw water becomes soft water after being adsorbed and softened by the softener in the softening tank 200. The soft water enters the first sealing frame 50 through the central channel 122, the central water slot 117, and the central annular slot 58. Then, a part of the soft water flows out through the water outlet annular slot 59, the water outlet slot 116, the water outlet channel 134, the water outlet pipe 33, the one-way valve 35, and the water outlet 312 for use, and the other part of the soft water is injected into the salt tank through the pull rod annular slot 422, the plug annular slot 75, the salt cavity 110, and the salt inlet 112.

[0121] See also Fig.23 As shown, when the softener in the softening tank 200 is replaced or the rear end pipeline of the multi-way valve 100 is damaged and leaking, the motor 81 controls the piston assembly 40 to move and stay in the closed position, the water inlet annular groove 55 is blocked by the piston 41, and a water inlet passage cannot be formed, and the water softener does not work.

[0122] See also Fig.24 As shown, when raw water is used instead of soft water (such as for watering flowers), the motor 81 controls the piston assembly 40 to move and stay in the bypass position, and the side flow annular groove 56 (side water groove 118) and the center annular groove 58 (center water groove 117) are blocked by the piston 41, while the water inlet slot 115 is not blocked by the piston 41. The water inlet annular groove 55 (water inlet slot 115), the piston cavity 412, and the water outlet annular groove 59 form a passage, and the raw water flows out through the water inlet 311, the third flow channel opening 345, the first flow channel opening 343, the water inlet pipe 32, the water inlet channel 132, the water inlet slot 115, the water inlet annular groove 55, the piston cavity 412, the water outlet annular groove 59, the water outlet slot 116, the water outlet channel 134, the water outlet pipe 33, the one-way valve 35, and the water outlet 312, and the raw water does not enter the softening tank 200.

[0123] The beneficial effect brought about by the technical solution of the present invention is that the above-mentioned commutator 30 integrates multiple functions into one, and multiple functions such as operation, bypass, and closing can be realized through only one component, reducing the number and volume of components of the control valve, making it easier to install and arrange in a narrow space, reducing space limitations, and simplifying operation.

[0124] The above are only preferred embodiments of the present invention, and are not intended to limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technician familiar with the profession can make some changes or modifications to equivalent embodiments of equivalent changes using the technical contents disclosed above without departing from the scope of the technical solution of the present invention. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A commutator (30), characterized in that: The commutator (30) comprises a main water pipe (31), a water inlet pipe (32), a water outlet pipe (33), a reversing ball (34), and a one-way valve (35). The main water pipe (31) is provided with the water inlet pipe (32) and the water outlet pipe (33) in communication with the main water pipe (31) on its outside. The water outlet pipe (33) is provided with the one-way valve (35) which opens in the direction of the main water pipe (31). The main water pipe (31) is provided with an external convex inner portion of the communicating portion with the water inlet pipe (32). The reversing ball (34) is embedded in the embedding groove (313) and can rotate in the embedding groove (313). A three-way flow channel (342) is provided in the reversing ball (34). The reversing ball (34) rotates in the embedding groove (313) to adjust whether the three-way flow channel (342) is connected to the main water pipe (31) and the water inlet pipe (32), so as to realize the conversion of the working state, bypass state, and closed state of the reversing device (30).

2. The commutator (30) according to claim 1, characterized in that: The commutator (30) further comprises a locking nut (36), a connecting piece (37), and a retaining ring (38); the connecting piece (37) is arranged on the outer periphery of the water inlet pipe (32) and the water outlet pipe (33); a slot (371) is arranged on the outer periphery of the connecting piece (37); the connecting piece (37) is inserted into the central hole (361) of the locking nut (36); the retaining ring (38) is engaged in the slot (371); and the retaining ring (38) protrudes from the surface of the connecting piece (37) to engage and connect the locking nut (36) and the connecting piece (37).

3. The commutator (30) according to claim 1, characterized in that: The water inlet pipe (32) and the water outlet pipe (33) are arranged in the same direction.

4. The commutator (30) according to claim 1, characterized in that: The end of the main water pipe (31) close to the water inlet pipe (32) is a water inlet (311), and the end of the main water pipe (31) close to the water outlet pipe (33) is a water outlet (312).

5. The commutator (30) according to claim 1, characterized in that: The three-way flow channel (342) is a T-shaped structure.

6. The commutator (30) according to claim 5, characterized in that: The three-way flow channel (342) includes a first flow channel opening (343), a second flow channel opening (344), and a third flow channel opening (345) which are connected to each other. The first flow channel opening (343) and the second flow channel opening (344) are collinear, and the third flow channel opening (345) is between the first flow channel opening (343) and the second flow channel opening (344) and is perpendicular to both.

7. The commutator (30) according to claim 1, characterized in that: The three-way flow channel (342) is a Y-shaped structure.

8. The commutator (30) according to claim 2, characterized in that: The connecting piece (37) is a cylindrical structure.

9. The commutator (30) according to claim 1, characterized in that: The commutator (30) further comprises a control handle (39), wherein the control handle (39) comprises a handle (391) and a connecting rod (392) which are fixedly connected. A small through hole (316) is provided on the main water pipe (31) at the rear side of the embedding groove (313). The end of the connecting rod (392) passes through the small through hole (316) and is detachably fixedly connected to the commutator ball (34). The small through hole (316) and the connecting rod (392) are sealed. The connecting rod (392) can drive the commutator ball (34) to rotate axially around the small through hole (316) to realize the conversion of the commutator (30) between the working state, the bypass state, and the closed state.

10. A multi-way valve (100), characterized in that: The commutator (30) comprises the commutator (30) according to any one of claims 1 to 9, wherein the commutator (30) is axially rotatable by 360°.

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