Fluid cartridge for a plural component sprayer

A mounting and mixing assembly comprising:

• a fluid cartridge comprising:
• a cartridge body having a first end and a second end;
• a cartridge bore extending axially through the cartridge body between the first end and the second end;
• a first material flowpath extending from the second end to the cartridge bore and a second material flowpath extending from the second end to the cartridge bore;
• a first fluid check disposed in the first material flowpath proximate a first inlet of the first material flowpath and a second fluid check disposed in the second material flowpath proximate a second inlet of the second material flowpath, the first and second fluid checks disposed to prevent backflow of material through the first and second inlets;
• a first side seal disposed in the first material flowpath proximate the cartridge bore, the first side seal including a first seal member and a first side spring biasing the first seal member at least partially into the cartridge bore such that the first side seal is pre-loaded;
• and
• a second side seal disposed in the second material flowpath proximate the cartridge bore, the second side seal including a second seal member and a second side spring biasing the second seal member at least partially into the cartridge bore such that the second side seal is pre-loaded;
• and
• a mounting head for mounting to a plural component sprayer, the mounting head including:
• a head body having a chamber wall;
• a receiving portion extending from the head body, the receiving portion and the chamber wall defining a receiving chamber;
• a first material port extending into the chamber wall, a second material port extending into the chamber wall, a purge port extending into the chamber wall, and a central bore extending axially through the head body;
• wherein the fluid cartridge is disposed in the receiving chamber;
• wherein the first inlet is aligned with the first material port to receive a first component material from the first material port, the second inlet is aligned with the second material port to receive a second component material from the second material port, and a purge inlet is aligned with the purge port to receive purge air from the purge port.

A fluid cartridge for use in a plural component sprayer, the fluid cartridge configured to be mounted in a receiving chamber of the plural component sprayer to receive first and second component materials from the plural component sprayer and to receive purge air from the plural component sprayer, the fluid cartridge comprising:

• a cartridge body defining a cartridge bore, the cartridge bore extending fully through the cartridge body between a first bore opening and a second bore opening such that the mix chamber can extend into the cartridge body through the second bore;
• a first seal housing mounted to the cartridge body, the first seal housing including a first post extending rearward from the first seal housing and configured to be received in a first material port formed through a chamber wall of the receiving chamber to receive the first component material from the first material port;
• a second seal housing mounted to the cartridge body, the second seal housing including a second post extending rearward from the second seal housing and configured to be received in a second material port formed through the chamber wall of the receiving chamber to receive the second component material from the second material port;
• a third post extending rearward from the cartridge body and configured to be received in a purge port formed through the chamber wall of the receiving chamber to receive purge air from the purge port;
• a first fluid check disposed in a first material path extending through the first seal housing from the first post to the cartridge bore;
• a second fluid check disposed in a second material path extending through the second seal housing from the second post to the cartridge bore;
• a third fluid check disposed in a purge path extending through the cartridge body from the third post to a purge chamber in the cartridge bore;
• a first side seal disposed in the first material path proximate the cartridge bore, the first side seal including a first seal member and a first side spring biasing the first seal member at least partially into the cartridge bore such that the first side seal is pre-loaded;
• and
• a second side seal disposed in the second material path proximate the cartridge bore, the second side seal including a second seal member and a second side spring biasing the second seal member at least partially into the cartridge bore such that the second side seal is pre-loaded;
• wherein the cartridge body, the first seal housing, the second seal housing, the first fluid check, the second fluid check, the third fluid check, the first side seal, and the second side seal form a single module configured to route the first component material, the second component material, and the purge air to the cartridge bore;
• wherein the fluid cartridge is mountable in the receiving chamber of the plural component sprayer as the single module such that the first post extends into the first material port, the second post extends into the second material port, the third port extends into the purge port, and the cartridge body is at least partially disposed within the receiving chamber;
• and
• wherein the fluid cartridge is dismountable from the receiving chamber of the plural component sprayer as the single module.

A fluid cartridge for use in a plural component sprayer, the fluid cartridge configured to be mounted in a receiving chamber of the plural component sprayer to receive first and second component materials from the plural component sprayer and to provide the first and second component materials to a mix chamber movable within and relative to the fluid cartridge for combination into a plural component material within the mix chamber, the fluid cartridge comprising:

• a cartridge body defining a cartridge bore, the cartridge bore extending fully through the cartridge body along a body axis and between a first opening and a second opening, wherein an axial distance between the first opening and a fluid outlet of the mix chamber is smaller than an axial distance between the second opening and the fluid outlet of the mix chamber;
• a first post extending rearward from the cartridge body and configured to be received in a first material port formed through a chamber wall of the receiving chamber to receive the first component material from the first material port;
• a first material flowpath extending through the cartridge body and configured to route the first component material to the cartridge bore and output the first component material at a first location along the axis;
• a second material flowpath extending through the cartridge body and configured to route the second component material to the cartridge bore;
• a purge air pathway extending through the cartridge body and configured to route purge air to the cartridge bore, the purge air pathway outputting the purge air into the cartridge bore at a purge chamber, wherein an axial distance between the purge chamber and the first opening is smaller than an axial distance between the first location and the first opening;
• a first fluid check disposed in the first material flowpath;
• a second fluid check disposed in the second material flowpath;
• a third fluid check disposed in the purge air pathway;
• wherein the cartridge body, the first fluid check, the second fluid check, and the third fluid check form a single module configured to route the first component material, the second component material, and the purge air to the cartridge bore;
• wherein the fluid cartridge is mountable in the receiving chamber of the plural component sprayer as the single module such that the cartridge body is at least partially disposed within the receiving chamber;
• and
• wherein the fluid cartridge is dismountable from the receiving chamber of the plural component sprayer as the single module.