Apparatus for remote mixing of fluids

• US 5,188,455 A
• Filed: 11/13/1990
• Issued: 02/23/1993
• Est. Priority Date: 11/13/1990
• Status: Expired due to Fees

• Current Assignee: Pennsylvania Research Corporation
• Original Assignee: Pennsylvania Research Corporation
• Inventors: Hammerstedt, Roy H.
• Primary Examiner(s): Hornsby, Harvey C.
• Assistant Examiner(s): SOOHOO, TONY GLEN
• Application Number:
  US07/612,644
• Time in Patent Office: 833 Days
• Field of Search: 366/336, 366/337, 366/339, 366/340, 366/150, 251/7, 137/896, 137/897, 417/474, 417/478, 406/80, 406/82, 406/83, 406/67, 406/181, 406/196, 406/73, 406/76, 406/85, 222/207, 222/214, 222/145, 222/135, 222/336, 92/92
• US Class Current: 366/177.1
• CPC Class Codes: B01F 31/29 Mixing by periodically deforming flexible tubular members through which the material is flowing
• CPC Class Codes: Y10T 137/87652 With means to promote mixing or combining of plural fluids
• CPC Class Codes: Y10T 137/8766 With selectively operated flow control means

Abstract

An apparatus for mixing fluids is described which includes a flexible tubular member disposed between opposed ends. Filling and clamp systems are placed adjacent each of the opposed ends, creating sealed chambers in the tubular member, each chamber including a reagent fluid. The sealed reagent chambers are separated by a mixing chamber, and all of the chambers are disposed within the tubular member. A spring driven plate pressurizes each of the reagent chambers. A control system is coupled to each of the clamp systems for selectively opening a channel between at least one reagent chamber and the mixing chamber, with reagent in a reagent chamber being forced, via the open channel, into the mixing chamber by the spring biased pressurizing plate.

Claims

1. An apparatus for mixing fluids comprising:

a flexible, tubular member having opposed closed ends;

a clamp means positioned adjacent each said opposed closed end for creating a sealed chamber adjacent each said opposed, closed end of said tubular member, each chamber containing a reagent fluid, said chambers separated by a central mixing chamber;

spring biased means bearing upon said sealed chambers to continually pressurized reagents therein; and

control means coupled to each said clamp means for selectively enabling movement of a clamp means to open a channel between a reagent containing chamber and said central mixing chamber, whereby reagent in a said reagent containing chamber positioned adjacent the enabled clamp means, is forced through said channel into said central mixing chamber by a one-time movement of said spring biased means, operation of all said clamp means enabling mixing of said reagents in said central mixing chamber, said central mixing chamber sealed so as to prevent outflow of said mixed reagents.

2. The apparatus as recited in claim 1, wherein a clamp means comprises:

a support plate adjacent said tubular member; and

movable bar means positioned to pinch said tubular member against said support plate, whereby operation of said control means enables movement of said movable bar means and a resultant opening of said channel to enable pressured fluid flow.

3. The apparatus as recited in claim 2, wherein each said spring biased means

presses said tubular member against said support plate at each said reagent chamber.

4. The apparatus as recited in claim 3, wherein said clamp means comprises:

a shaft slidably mounted in said support plate, said shaft having a latch surface movable therewith, and wherein said control means comprises an electrically movable core, operable in one position to engage said latch surface, said core and latch surface being engagable when said clamp means is moved to apply pinching pressure against tubular member.

5. The apparatus as recited in claim 4, wherein said control means, upon actuation moves said core to disengage it from said latch means and to release said clamp means whereby said pinching pressure is released.

6. An apparatus for mixing fluids comprising:

a plate;

a pair of T-shaped, flexible, tubular members, said T-shaped members having horizontal and central vertical portions, each said tubular member having reagent receiving regions at horizontal extremities of said T-shapes, said central vertical portions extending through openings in said plate and adapted to receive and hold a mixture of reagents from said reagent receiving regions;

adjustable side straps mounted on said plate for sealing extremities of said horizontal portions of said tubular member against fluid flow when adjusted to pinch said portions against said plate;

a pair of clamp means spanning said horizontal portions, one on either side of said vertical portions, said clamp means movable to pinchably seal said tubular members to create chambers for reagents in said horizontal portions, said reagent chambers separated by said central vertical portions;

spring biased bearing means for pressurizing contents of said reagent receiving regions; and

control means associated with each said clamp means enabling movement of a said clamp means to a non-pinching position, said bearing means moving under influence of a spring bias to force a reagent in a chamber to move to said central vertical portion.

7. The apparatus as recited in claim 6 wherein said bearing means comprises:

posts adjacent reagent receiving regions in said horizontal portions, said posts fixed to said plate;

a pressure bar associated with each said post, each said bar positioned to span and bear upon corresponding reagent receiving regions in adjacent horizontal portions of said tubular members; and

spring means on each said post for biasing said bars against said reagent receiving regions.

8. The apparatus as recited in claim 7 wherein each said clamp means comprises:

a yoke shaft slidable mounted in said plate between adjacent tubular members;

a yoke connected to said yoke shaft and positioned orthogonally to said tubular members, whereby when said yoke shaft is in a lowermost position, said yoke bears upon said tubular members and pinches off their tubular interiors against said plate, to prevent fluid flow therethrough.

9. The apparatus as recited in claim 8 wherein each said yoke shaft includes a latch surface, and wherein said control means comprises:

a pair of solenoids, each solenoid having a movable core, each said core, when engaged with a said latch surface acting to maintain a yoke shaft in its lowermost position, to thereby cause said yoke shaft to perform a pinching action on said tubular members.

10. The apparatus as recited in claim 9 wherein, upon energization, a solenoid is caused to withdraw its respective core from engagement with said latch surface, to release a yoke shaft and enable said yoke to elevate, thereby enabling fluid flow in said tubular member.

11. The apparatus as recited in claim 6 further comprising:

flow control means positioned within said tubular member to cause turbulent fluid flow between said reagent chambers and said central chambers.

12. The apparatus as recited in claim 6 further comprising:

flow control means positioned in a central chamber to separate it into upper and lower mixing chambers, said flow control means including a communicating orifice between said upper and lower mixing chambers to enable limited fluid flow therebetween.