Switch valve having leakproof function
AssigneeWen Shen Fu Co., Ltd.
InventorHung-Lin Lai
Life of this patent
Estimating the term…
Abstract
A switch valve includes a valve seat, a valve body, a ceramic plate unit, a control shaft, and a control handle. Thus, the ceramic plate unit is rotatable in the valve body to open or close the water flow so that the valve body will not rub the valve seat constantly to prevent the valve body and the valve seat from being worn out due to the friction, thereby enhancing the lifetime of the switch valve. In addition, the ceramic plate unit has a wear resisting function to prevent a gap from being formed between the ceramic plate unit and the valve body during a long-term utilization, so that the ceramic plate unit has a leakproof function, thereby enhancing the working efficiency of the switch valve.
Claims14
A switch valve, comprising:
- a valve seat having an inside formed with a valve chamber which has a water inlet conduit and a water outlet conduit;
- a valve body partially mounted in the valve chamber of the valve seat and having a water inlet hole connected to the water inlet conduit of the valve seat and a water outlet hole connected to the water outlet conduit of the valve seat;
- a ceramic plate unit rotatably mounted in the valve body to connect the water inlet hole to the water outlet hole of the valve body or to interrupt a connection between the water inlet hole and the water outlet hole of the valve body;
- a control shaft rotatably mounted on the valve body and having a first end secured on the ceramic plate unit to rotate the ceramic plate unit and a second end protruded outwardly from the valve body;
- wherein the valve body has a first portion secured in the valve chamber of the valve seat and a second portion protruded outwardly from the valve chamber of the valve seat;
- the valve chamber of the valve seat has a peripheral wall formed with an inner thread;
- the first portion of the valve body has a first end formed with an outer thread screwed into the inner thread of the valve seat and a second end formed with the water inlet hole;
- the switch valve further comprises:
- a control handle secured on the second end of the control shaft to rotate the control shaft;
- a locking cap mounted on the valve body and rested on the valve seat to cover the valve body;
- the second portion of the valve body is formed with an outer threading;
- the locking cap has a first end formed with an inner threading screwed onto the outer threading of the valve body;
- the outer threading of the valve body is located beside and has a diameter greater than that of the outer thread of the valve body.
Dependencies are inferred from the claim text.