Method and means for the preparation of solutions from dry chemicals

A method for preparing a chemical solution, comprising:

• providing a chemical feeder including
• an upper housing having a grid at the bottom thereof, and
• a lower housing having a nozzle installed therein, the nozzle oriented so as to discharge fluid vertically upward toward the grid;
• discharging fluid from the nozzle to cause a fluid surface in the chemical feeder to be locally elevated in an area of said surface above the nozzle, so that the surface in said area rises above the grid;
• dissolving chemical material disposed on top of the grid, in accordance with the fluid rising above the grid and thereby contacting the chemical material;
• and
• conducting a fluid mixture including the dissolved material out of the lower housing.

An apparatus for preparation and delivery of a solution of a solid chemical material, comprising:

• a housing having a base and an upwardly extending side wall, said base and said side wall defining a cavity;
• an inner chamber having a side wall within said cavity, the bottom of the side wall of said inner chamber being adjacent to said base and the side wall of said inner chamber being spaced from the side wall of the housing, thereby forming an annular outer chamber;
• a grid disposed above the side wall of said inner chamber, said grid being substantially parallel to the base;
• a nozzle disposed in said inner chamber for discharging fluid in which said solid chemical material is soluble into said inner chamber toward the grid, so as to cause a fluid surface in the inner chamber to be locally elevated in a portion of said surface;
• and
• an outlet port in the side wall of the housing for conducting the chemical solution out of the outer chamber.

In an apparatus for dissolving and delivering a solution of a solid chemical material including

• a housing having a base member and upwardly extending side walls, said base member and side walls defusing a cavity, and
• a chamber having side walls within said cavity, the bottom of the side walls of said chamber being adjacent to said base member and the side walls of said chamber being spaced from the side walls of the housing,
• the improvement comprising:
• a nozzle disposed in said chamber for discharging fluid in which said solid chemical material is soluble upwardly into said inner chamber, so as to cause a fluid surface in the inner chamber to be locally elevated in a portion of said surface.

An apparatus for preparation and delivery of a solution of a solid chemical material, comprising:

• a housing having a base and an upwardly extending side wall, said base and side wall defining a cavity;
• a substantially vertical hollow container extending above said cavity and in fluid communication with said cavity, said container having a side wall spaced from the side wall of said housing;
• a plate connecting the upper terminus of the side wall of the housing to the container;
• a grid having a plurality of perforations, said grid spaced from and substantially parallel to the base so that an upper surface of the grid has a spacing from the base equal to or less than that of an upper surface of said plate, said grid having an outer edge proximate to the side walls of said container,
• a nozzle disposed between the base and said grid for discharging fluid in which said solid chemical material is soluble toward the grid, so as to cause a portion of a fluid surface above the nozzle to be locally elevated above said grid;
• and
• an outlet port in the side wall of the housing for conducting the chemical solution out of the cavity.

In an apparatus for delivering a solution of a solid chemical material, including

• a housing having a base and upwardly extending side walls, said base and side walls defining a cavity, and
• an elongated substantially vertical hollow container within said cavity, said container having side walls, the bottom of which are affixed to said base and which are spaced from the side walls of said housing,
• the improvement comprising:
• a nozzle disposed within the container for discharging fluid in which said solid chemical material is soluble upwardly into the container, so as to cause a fluid surface in the container to be locally elevated in a portion of said surface.