Multifunctional softening valve

A multifunctional softening valve, comprising:

• a valve body, a movable valve plate and a driving device, wherein a side wall of the valve body defining a water inlet, a water outlet, a drainage port, a water passing port, and a regenerant inlet;
• an inner chamber and an outer chamber located in the valve body, the inner chamber and the outer chamber being coaxial and separated from each other, the outer chamber communicated with the water inlet;
• the inner chamber comprising a central drainage cavity, a working cavity, a backwashing cavity, a regeneration cavity, a blind cavity, a positive washing cavity and a water injection cavity;
• the working cavity, the backwashing cavity, the regeneration cavity, the blind cavity, the positive washing cavity and the water injection cavity arranged in a fan ring and distributed in a circumferential direction of the central drainage cavity;
• wherein the central drainage cavity is communicated with the drainage port, a water blocking structure is arranged at the backwashing cavity or the water outlet, the regeneration cavity is communicated with the water passing port, the water passing port is communicated with the regenerant inlet, the water injection cavity is communicated with the regenerant inlet, a first filter element interface and a second filter element interface, coaxial with a central axis, are disposed on a bottom portion of the valve body, the working cavity and the forward washing cavity are respectively communicated with the first filter element interface, and the backwashing cavity is communicated with the second filter element interface;
• wherein the movable valve plate is coaxially disposed above the inner chamber;
• the driving device is in transmission connection with the movable valve plate to drive the movable valve plate to rotate in the valve body;
• a central blind hole is defined in a central position of the movable valve plate;
• the movable valve plate defines a water inlet through hole, a first blind hole, a second blind hole, a third blind hole, a fourth blind hole, a fifth blind hole, a drainage blind hole, a sixth blind hole, a seventh blind hole and an eighth blind hole;
• the water inlet through hole the first blind hole, the second blind hole, the third blind hole, the fourth blind hole, the fifth blind hole, the drainage blind hole, the sixth blind hole, the seventh blind hole and the eighth blind hole are arranged in a fan ring and distributed in a circumferential direction of the central blind hole;
• the central blind hole is in communication with the central drainage cavity, and the drainage blind hole is in communication with the central blind hole;
• a central angle corresponding to the first blind hole is equal to a central angle corresponding to the water injection cavity;
• a central angle corresponding to the first blind hole plus a central angle corresponding to the second blind hole is equal to a central angle corresponding to the water inlet through hole, a central angle corresponding to the working cavity, and a central angle corresponding to the backwashing cavity respectively;
• wherein a central angle corresponding to the third blind hole is equal to a central angle corresponding to the fifth blind hole, a central angle corresponding to the sixth blind hole, a central angle corresponding to the eighth blind hole, and a central angle corresponding to the water injection cavity;
• a central angle corresponding to the fourth blind hole is equal to a central angle corresponding to the seventh blind hole;
• the central angle corresponding to the third blind hole plus the central angle corresponding to the fourth blind hole is equal to a central angle corresponding to the regeneration cavity, and is equal to a central angle corresponding to the positive washing cavity;
• a central angle corresponding to the drainage blind hole plus a central angle corresponding to the fifth blind hole is equal to a central angle corresponding to the blind cavity.