Fluid pump and quick release mounting arrangement therefor

• US 4,211,519 A
• Filed: 08/29/1977
• Issued: 07/08/1980
• Est. Priority Date: 08/29/1977
• Status: Expired due to Term

• Current Assignee: Cole-Parmer Instrument Company (Thermo Fisher Scientific Incorporated)
• Original Assignee: Cole-Parmer Instrument Company (Thermo Fisher Scientific Incorporated)
• Inventors: Hogan, Lawrence R.
• Primary Examiner(s): Gluck, Richard E.
• Application Number:
  US05/828,482
• Time in Patent Office: 1,044 Days
• Field of Search: 417/360, 417/475, 417/476, 417/477, 417/474, 418/45, 64/10
• US Class Current: 417/360
• CPC Class Codes: F04B 43/1253 by using two or more rollers as squeezing elements, the rollers moving on an arc of a circle during squeezing

Abstract

A peristaltic pump is disclosed having two identical hingedly connected housing sections defining mating surfaces substantially coplanar with the hinge axis and the longitudinal axis of the housing to facilitate easy opening of the housing sections for loading and manipulation of a flow tube looped internally of the housing and cooperable with rotatable displacement means to effect a peristaltic pumping action on the tube. Various pump mounting arrangements are disclosed which are particularly suitable for limited access areas and which maintain the pump sections in closed positions while facilitating quick release of the pumps for servicing and the like.

Claims

1. In a peristaltic pump which includes a housing defining a longtiudinal axis, said housing having an internal chamber and an opening communicating with said chamber, a length of tube extending through said opening and having a portion looped internally of said chamber so as to form a cntinuous flow passage through said tube, and displacement means supported within said chamber and operatively associated with said tube to facilitate a peristaltic pumping action within said tube;

the improvement wherein said housing comprises two housing sections hingedly connected to each other for relative movement between open and closed positions about a hinge axis substantially coplanar with and spaced from said longitudinal axis in substantially parallel relation therewith, said two housing sections defining a parting plane therebetween substantially coplanar with said longitudinal and hinge axes when said housing sections are in relatively closed positions wherein said housing sections define said internal chamber and enclose and support said displacement means, said housing sections in their said open positions facilitating removal of said displacement means and manipulation and replacement of said tube, each of said housing sections defining a tube receiving opening communicating with said chamber and opening externally of said housing, said parting plane passing through said openings in the longitudinal direction thereof such that when said housing sections are in their said open positions, said tube may be inserted within each of said openings by movement of said tube in a direction substantially transverse to its longitudinal axis, said housing sections being adapted to retain said tube in assembled relation therewith when said housing sections are moved between their said open and closed positions.

2. The improvement as defined in claim 1 wherein said housing sections include means facilitating retention of said housing sections in their said closed positions.

3. The improvement as defined in claim 1 wherein said housing sections are identical in configuration.

4. The improvement as defined in claim 1 wherein said displacement means is rotatably supported within said chamber, said displacement means including an operating shaft extending externally of said housing and facilitating rotation of said displacement means.

5. The improvement as defined in claim 1 wherein said parting plane passes through said openings so that said housing peripherally of said openings establishes approximately 270°

contact with said tube when inserted within said openings with said housing sections in their said open positions.

6. The improvement as defined in claim 1 wherein one of said tube receiving openings is provided in each of said housing sections, the axes of said tube receiving openings being such that the portions of said tube extending through said openings have substantially different curvature than said loop portion of said tube when said housing sections are in their said closed positions.

7. A peristaltic pump and mounting arrangement comprising, in combination, a peristaltic pump having a housing defining a longitudinal axis and an internal chamber, rotary displacement means supported by said housing within said chamber, said housing comprising at least two housing sections hingedly connected to each other for relative movement about a hinge axis between closed positions supporting and enclosing said displacement means and open positions providing access to said displacement means, said hinge axis being disposed substantially coplanar with and parallel to said longitudinal axis, said two housing sections defining a parting plane therebetween substantially coplanar with said longitudinal and hinge axes when said housing sections are in relatively closed positions, each of said housing sections defining a conduit receiving opening communicating with said chamber and opening externally of said housing, said conduit receiving openings being adapted to receive a tubular conduit therethrough with a portion of the conduit disposed within said chamber so as to form a continuous flow passage through said conduit, said conduit being cooperable with said displacement means within said chamber to facilitate a peristaltic pumping action within said conduit upon rotation of said displacement means, said parting plane passing through said openings in the longitudinal direction thereof such that when said housing sections are in their said open positions, said conduit may be inserted within each of said openings by movement of said conduit in a direction substantially transverse to its longitudinal axis, said housing sections being adapted to retain said conduit in assembled relation within said openings when said housing sections are moved between their said open and closed positions, and mounting support means having means cooperative with said housing sections to support said housing sections in predetermined closed positions relative to said mounting support means, said mounting support means facilitating release of said housing from said mounting support means, opening of said housing section relative to each other for access to said displacement means and said conduit, and reclosing and remounting of said housing sections on said mounting support means.

8. The combination as defined in claim 7 wherein said housing sections and said mounting support means define cooperating detent means adapted to retain said housing sections in their said closed positions when said housing means is supported by said mounting support means in said predetermined position.

9. The combination as defined in claim 8 wherein said cooperating detent means includes at least two fixed locating pins mounted on said mounting support means, said housing sections each having a recess detent therein adapted to receive one of said locating pins therein when said housing sections are mounted on said mounting support means in their said closed positions.

10. The combination as defined in claim 7 wherein said mounting and support means includes rotary drive means, said displacement means being rotatable within said chamber and having a drive shaft extending externally of said housing, said mounting support means being adapted to support said housing with said drive shaft in axial alignment with said rotary drive means.

11. The combination as defined in claim 10 including drive key means cooperative with said rotary drive means and said drive shaft when said housing is mounted on said mounting support means so as to effect rotation of said displacement means upon energizing said rotary drive means.

12. The combination as defined in claim 11 wherein said drive shaft has a transverse slot in its outer end registrable with said drive key means to couple said drive shaft to said rotary drive means, and including resilient means operatively associated with said drive key means and adapted to facilitate mounting of said housing on said support means when said drive key means is not in registry with said transverse slot, said resilient means urging said drive key means into said transverse slot upon initial actuation of said rotary drive means.

13. The combination as defined in claim 7 wherein said housing includes at least two longitudinally extending grooves therein, said mounting support means including at least two support flanges adapted to be received within said longitudinal grooves when said housing is mounted on said mounting support means with said housing sections in their said closed positions.

14. A peristaltic pump and mounting arrangement comprising, in combination, a peristaltic pump having a housing defining a longitudinal axis and an internal chamber and having at least one opening communicating with said chamber and opening externally of said housing, a tubular conduit extending through said opening and having a portion disposed within said chamber so as to form a continuous flow passage through said conduit, displacement means mounted within said chamber and cooperable with said conduit to facilitate a peristaltic pumping action within said conduit, said housing comprising at least two housing sections hingedly connected to each other for relative movement about a hinge axis between closed positions supporting and enclosing said displacement means and open positions providing access to said displacement means and said conduit, said hinge axis being disposed substantially coplanar with and parallel to said longitudinal axis, each of said housing sections having at least one mounting sleeve thereon in parallel relation to and spaced from the longitudinal axis of said housing, each of said mounting sleeves having an opening extending longitudinally therethrough and opening laterally outwardly along the full length of the corresponding mounting sleeve, and mounting support means including releasable mounting screws adapted to be inserted within said mounting sleeves so as to releasably retain said housing means on said mounting support means with said housing sections in their said closed positions, said mounting support means facilitating release of said mounting screws so as to enable removal of said housing from said mounting support means and opening of said housing sections for access to said displacement means and said conduit, and reclosing and remounting of said housing sections on said mounting support means.

15. The combination as defined in claim 14 wherein said mounting support means further includes a plurality of locating pins thereon the axes of which are parallel to the axes of said mounting screws when secured to said mounting support means, said housing having recess detents therein cooperable with said locating pins to receive said locating pins when said housing is mounted on said mounting support means with said housing sections in their said closed positions.

16. A peristaltic pump and mounting arrangement comprising, in combination, peristaltic pump having a housing defining a longitudinal axis and an internal chamber and having at least one opening communicating with said chamber and opening externally of said housing, a tubular conduit extending through said opening and having a portion disposed within said chamber so as to form a continuous flow passage through said conduit, displacement means mounted within said chamber and cooperable with said conduit to facilitate a peristaltic pumping action with said conduit, said housing comprising at least two housing sections hingedly connected to each other for relative movement about a hinge axis between closed positions supporting and enclosing said displacement means and open positions providing access to said displacement means and said conduit, said hinge axis being disposed substantially coplanar with and parallel to said longitudinal axis, each of said housing sections having at least one mounting sleeve thereon in substantially parallel relation to and spaced from the longitudinal axis of said housing, each of said mounting sleeves having an opening extending longitudinally therethrough, and mounting support means including a mounting plate having a plurality of generally parallel support rods secured thereon and spaced laterally apart a distance sufficient to be received through said mounting sleeves so as to releasably retain said housing on said mounting plate when said housing sections are in their said closed positions, said support rods being of sufficient length to extend fully through said mounting sleeves so as to extend outwardly therefrom, said support rods each having an annular retainer groove formed adjacent its outer end, and including a retainer plate separable from said housing and having a plurality of openings formed therethrough each of which is positioned and shaped to receive the outer end of a corresponding one of said support rods therethrough with said retainer plate in a first orientation relative to said support rods;

said retainer plate being thereafter moveable, to affect cooperation of said retainer plate with said retainer grooves in the corresponding outer ends of said support rods so as to releasably retain said retainer plate on said support rods whereby to retain said housing on said mounting support means.

17. The combination as defined in claim 16 wherein said mounting plate comprises a first mounting plate, and including a second mounting plate having a plurality of second support rods secured thereto, said second support rods being adapted to support a similar pump housing thereon, and said second mounting plate being adapted for releasable mounting on said first support rods so as to axially align the associated pump housings in tandem relation.

18. The combination of claim 17 wherein said second mounting plate and said retainer plate have lifting flanges thereon facilitating grasping and manipulation thereof.