Canister flush valve

Abstract

A canister flush valve includes a float, an overflow tube and a plurality of adjustment baffles, wherein the hollow cylindrical float is provided with a bottom wall, a plurality of water inlets are defined in the bottom wall, and a top end of the water inlet assumes a tapered form. Moreover, the overflow tube is clamped to the float, a ring plate radially extends from the overflow tube close to the bottom wall, and the overflow tube is provided with a positioning portion. The positioning portion enables the adjustment baffles to be selectively fastened and disposed thereto, thereby enabling changing the distance between the water inlet to the lowest adjustment baffle to vary the flow quantity of flush water flowing into the canister flush valve from the water inlets, and further changing the speed the float sinks in the flush water as well as the speed a valve port closes.

1 . A canister flush valve, comprising:
 a float, said float is of a hollow cylindrical form and is provided with a bottom wall, a plurality of water inlets are defined in said bottom wall, and a top portion of each of the water inlets are of a tapered form;   an overflow tube, said overflow tube is located in said float using a detached way, and said overflow tube is provided with a positioning portion close to a section at said bottom wall; and   at least one adjustment baffle, said adjustment baffles are selectively fastened to said positioning portion of said overflow tube, thereby enabling changing the distance between each of said water inlets to said adjustment baffles or the lowest adjustment baffles.   
     
     
         2 . The canister flush valve according to  claim 1 , wherein a plurality of openings are equally spaced in said bottom wall, and a raised tube upwardly extends from said bottom wall corresponding with the periphery of each of said openings, thereby enabling the top edge of each of said raised tubes to form said water inlet, moreover, a raised arc portion is formed on the inner edge of each of said raised tubes at the area of said water inlet, thereby enabling said water inlet to form said tapered form, and a plurality of drain openings are spaced in the bottom end of said overflow tube. 
     
     
         3 . The canister flush valve according to  claim 1 , wherein a float wall upwardly extends from the outer side of said bottom wall, and said overflow tube is provided with a cylindrical shaped overflow tube wall, the bottom end of said overflow tube wall is disposed tight against said bottom wall, thereby enabling a holding chamber for containing flush water to be formed between said overflow tube wall, said bottom wall, and said float. 
     
     
         4 . The canister flush valve according to  claim 3 , wherein the center of said bottom wall is provided with an aperture and the diameter of said aperture matches the internal diameter of said overflow tube wall. 
     
     
         5 . The canister flush valve according to  claim 1 , wherein a plurality of protrusions radially extend from a ring plate, and a plurality of clamp pieces respectively radially extend from the inner edge of said float corresponding to each of said protrusions, thereby enabling said overflow tube to use said protrusions to respectively insertedly clamp the bottom surface of each of said clamp pieces, moreover, the bottom end of said overflow tube is disposed tight against said bottom wall and said overflow tube is axially located to said float. 
     
     
         6 . The canister flush valve according to  claim 5 , wherein a bottom edge of each of said clamp pieces corresponding to one side of each of said protrusions is of an arc form, and the front edge of each of said protrusions is of an arc form, thereby enabling each of said protrusions to be guided to enter said bottom surface of each of said clamp pieces. 
     
     
         7 . The canister flush valve according to  claim 1 , wherein said positioning portion comprises a ring plate and a clamping section, said ring plate radially extends from said overflow tube, and said clamping section extends from the bottom end of said overflow tube wall to the bottom edge area of said ring plate. 
     
     
         8 . The canister flush valve according to  claim 7 , wherein three fins extend equally spaced from said overflow tube, and the bottom portion of each of said fins is connected to said ring plate, moreover, the outer edge of each of said fins matches up with the inner surface of said float, thereby enabling said overflow tube to be radially located within said float, the external diameter of said ring plate is smaller than the internal diameter of said float wall, thereby providing a gap between said ring plate and said float enabling the circulation of water. 
     
     
         9 . The canister flush valve according to  claim 8 , wherein a plurality of protrusions respectively radially extend from the areas where said ring plate adjoins each of said fins, and a plurality of clamp pieces respectively radially extend from the inner edge of said float corresponding to each of said protrusions, thereby enabling said overflow tube to insertedly clamp the bottom surface of each of said clamp pieces using said protrusions, and each of said clamp pieces abut against said fins to insertedly clamp said overflow tube to within said float. 
     
     
         10 . The canister flush valve according to  claim 9 , wherein a bottom edge of each of said clamp pieces corresponding to one side of each of said protrusions is of an arc form, and the front edge of each of said protrusions also is of an arc form, thereby enabling each of said protrusions to be guided to enter said bottom surface of each of said clamp pieces. 
     
     
         11 . The canister flush valve according to  claim 1 , wherein each of said adjustment baffles is provided with different thicknesses.