Machine tool coolant reclamation system employing a conveyor discharging separated solids onto an impingement screen

• US 5,858,218 A
• Filed: 12/16/1996
• Issued: 01/12/1999
• Est. Priority Date: 12/16/1996
• Status: Expired due to Fees

• Current Assignee: Kennametal Incorporated
• Original Assignee: Kennametal Incorporated
• Inventors: Reffner, Richard B., Setlock, Andrew T.
• Primary Examiner(s): POPOVICS, ROBERT J
• Application Number:
  US08/767,395
• Time in Patent Office: 757 Days
• Field of Search: 210/167, 210/168, 210/171, 210/196, 210/197, 210/252, 210/255, 210/259, 210/262, 210/295, 210/297, 210/348, 210/400, 210/401, 210/409
• US Class Current: 210/167.01
• CPC Class Codes: B01D 29/014 with curved filtering elements construction B01D29/035, B01D29/071
• CPC Class Codes: B01D 29/90 for feeding
• CPC Class Codes: B01D 29/945 for continuously discharging concentrated liquid

Abstract

A coolant reclamation device for use in conjunction with a conveyor of a first width wherein the conveyor receives solid contaminants and coolant from a machine tool operation. The conveyor transports the solid contaminants and coolant to the coolant reclamation device. The coolant reclamation device includes an elongate body which defines a chamber and contains an elongate opening which provides direct access to the chamber. The device also includes an elongate screen located over the opening. The coolant reclamation device is positioned relative to the conveyor so that the solid contaminants and coolant discharged from the conveyor impinge the screen whereby the solid contaminants remain on the surface of the screen and the coolant passes through the screen into the chamber. The elongate body contains a return port through which the chamber is in fluid communication with the coolant reservoir via a conduit.

Claims

1. A machine tool coolant reclamation system for use with a machine tool that discharges solid contaminants and coolant, the reclamation system comprising:

a coolant reservoir that supplies coolant to the machine tool;

a conveyor of a first width that receives the solid contaminants and coolant from the machine tool, and a portion of the conveyor being within the coolant reservoir;

a solid contaminant bin;

a coolant reclamation device comprising;

an elongate body defining a chamber, and the elongate body containing an elongate opening which provides direct access to the chamber;

an elongate screen positioned over the opening;

the coolant reclamation device positioned relative to the conveyor so that the solid contaminants and coolant discharged from the conveyor impinge the screen whereby the solid contaminants remain on the surface of the screen and the coolant passes through the screen into the chamber; and

the elongate body containing a return port through which the chamber is in fluid communication with the coolant reservoir via a conduit.

2. The coolant reclamation system of claim 1 wherein the screen is arcuate in shape so as to present a convex surface upon which the solid contaminants impinge upon discharge from the conveyor.

3. The coolant reclamation system of claim 2 wherein the screen has longitudinal edges.

4. The coolant reclamation system of claim 3 wherein the degree of curvature of the screen is of a magnitude so as to permit the solid contaminants to build up on the screen and eventually fall over the longitudinal edges of the screen and into the solid contaminant bin.

5. The coolant reclamation system of claim 4 wherein the degree of curvature of the screen is of a magnitude so as to permit the solid contaminants to remain on the screen a sufficient time to allow coolant to pass through the screen and into the chamber.

6. The coolant reclamation system of claim 2 wherein the screen has a elongate length and an arcuate width, the screen has a radius of curvature, and the ratio of the arcuate width to the radius of curvature being about 7:

10.

7. The coolant reclamation system of claim 2 wherein the screen has an elongate length, and the elongate length of the screen being greater than the first width of the conveyor.

8. The coolant reclamation system of claim 2 further including a conduit connected to the return port whereby coolant flows from the chamber through the conduit into the coolant reservoir.

9. A machine tool system for removing material from a workpiece, the machine tool system comprising:

a machine tool station that removes material from the workpiece so as to generate solid contaminants and used coolant;

a coolant reclamation assembly that comprises;

a coolant reservoir that supplies coolant to the machine tool station;

a conveyor of a first width that receives the solid contaminants and the coolant from the machine tool station, and a portion of the conveyor being within the coolant reservoir;

a solid contaminant bin;

a coolant reclamation device comprising;

an elongate body defining a chamber, and the elongate body containing an elongate opening which provides direct access to the chamber;

an elongate screen positioned over the opening;

the coolant reclamation device positioned relative to the conveyor so that the solid contaminants and coolant discharged from the conveyor impinge the screen whereby the solid contaminants remain on the surface of the screen and the coolant passes through the screen into the chamber; and

the elongate body containing a return port through which the chamber is in fluid communication with the coolant reservoir via a conduit.

10. The machine tool system of claim 9 wherein the screen is arcuate in shape so as to present a convex surface upon which the solid contaminants impinge upon discharge from the conveyor.

11. The machine tool system of claim 10 wherein the screen has longitudinal edges, and the degree of curvature of the screen is of a magnitude so as to permit the solid contaminants to build up on the screen and eventually fall over the longitudinal edges of the screen and into the solid contaminant bin, and the degree of curvature of the screen is of a magnitude so as to permit the solid contaminants to remain on the screen a sufficient time to allow coolant to pass through the screen and into the chamber.

12. The coolant reclamation system of claim 10 wherein the screen has an elongate length, and the elongate length of the screen being greater than the first width of the conveyor.

13. The coolant reclamation system of claim 10 further including a conduit connected to the return port whereby coolant flows from the chamber through the conduit into the coolant reservoir.