Portable screening/washing plant with scrubbing mill

• US 7,461,746 B1
• Filed: 06/19/2007
• Issued: 12/09/2008
• Est. Priority Date: 06/19/2006
• Status: Active Grant

• Current Assignee: Astec Industries Incorporated (Johnson Crushers International)
• Original Assignee: Astec Industries Incorporated (Johnson Crushers International)
• Inventors: Egge, Alan R., Anderson, Steve J., Wendte, Jeffrey A.
• Primary Examiner(s): Rodriguez; Joseph C
• Application Number:
  US11/820,421
• Time in Patent Office: 539 Days
• Field of Search: 209/44, 209/44.2, 209/250, 209/268, 209/413, 209/420, 209/421, 209/935
• US Class Current: 209/413
• CPC Class Codes: B02C 21/02 Transportable disintegrating plant
• CPC Class Codes: B07B 1/005 Transportable screening plants
• CPC Class Codes: B07B 2201/04 Multiple deck screening devices comprising one or more superimposed screens
• CPC Class Codes: B08B 3/042 the loose articles or bulk material travelling gradually through a drum or other container, e.g. by helix or gravity

Abstract

A portable screening and washing assembly includes a frame, and in addition, a scrubbing mill, a vibratory screen assembly and a fine material washer, all of which are mounted on the frame. Both the scrubbing mill and the fine material washer are adapted to move between a transport configuration and an operational configuration.

Claims

1. A portable screening and washing assembly comprising:

(a) a frame having a wheelset;

(b) a scrubbing mill that is mounted on the frame and adapted to move between a transport configuration and an operational configuration;

(c) a vibratory screen assembly that is mounted on the frame;

(d) a fine material washer that is mounted on the frame and adapted to move between a transport configuration and an operational configuration;

(e) means mounted on the frame for moving the scrubbing mill between the transport configuration and the operational configuration;

(f) means mounted on the frame for moving the fine material washer between the transport configuration and the operational configuration.

2. The assembly of claim 1 wherein:

(a) the fine material washer has a front end and a rear end, said front end being pivotally attached to the frame; and

(b) the means mounted on the frame for moving the fine material washer between the transport configuration and the operational configuration includes a pair of actuators, one on either side of the fine material washer, each of which is pivotally attached at one end to the frame and at the other end to the fine material washer so that when the scrubbing mill is raised from the transport configuration to the operational configuration, the actuators may be operated to raise the rear end of the fine material washer to the operational configuration.

3. The assembly of claim 2:

(a) wherein the frame comprises;

(i) a first frame component that is located generally beneath the vibratory screen assembly;

(ii) a second frame component that is located to the rear of the first frame component and generally beneath the vibratory screen assembly;

(iii) a third frame component having a front end and a rear end, said third frame component being located to the rear of the second frame component and generally beneath the fine material washer;

(b) which includes a chute that is pivotally attached to the rear end of the fine material washer so that as the rear end of the fine material washer is raised to the operational configuration, the chute will extend beyond the rear end of the third frame component.

4. The assembly of claim 1 wherein the frame comprises:

(a) a first frame component that is located generally beneath the vibratory screen assembly;

(b) a second frame component that is located to the rear of the first frame component and generally beneath the vibratory screen assembly;

(c) a third frame component that is located to the rear of the second frame component and generally beneath the fine material washer; and

(d) a fourth frame component.

5. The assembly of claim 4 wherein the fourth frame component comprises:

(a) a front equalizer frame portion to which a wheelset is attached; and

(b) a rear equalizer frame portion to which a wheelset is attached.

6. The assembly of claim 5 wherein the rear equalizer frame portion is detachably mounted both to the front equalizer frame portion and to the third frame component.

7. The assembly of claim 1 wherein:

(a) the means mounted on the frame for moving the scrubbing mill between the transport configuration and the operational configuration includes a front elevation assembly comprising a pair of scrubbing mill supports, one on either side of the scrubbing mill, wherein each scrubbing mill support comprises;

(i) a telescoping tube support comprising an inner tube mounted within an outer tube and adapted to move longitudinally with respect thereto, said telescoping tube support being pivotally attached at one end to the frame and being pivotally attached at the other end to the scrubbing mill; and

(ii) a cooperating actuator that is attached at one end to the outer tube and at the other end to the inner tube, so that operation of the actuator will cause the inner tube to move longitudinally with respect to the outer tube; and

(b) the means mounted on the frame for moving the scrubbing mill between the transport configuration and the operational configuration includes a rear elevation assembly that is attached between the frame and the scrubbing mill.

8. The assembly of claim 7 wherein the cooperating actuator of each scrubbing mill support is adapted to be extended to cause the tube support to pivot from an angled position when the scrubbing mill is in the transport configuration to a generally vertical position when the scrubbing is in the operational configuration.

9. The assembly of claim 7 wherein the rear elevation assembly comprises:

(a) a linkage assembly comprising;

(i) a pair of forward links, one on either side of the scrubbing mill, each of which is pivotally attached at one end to the frame and pivotally attached at the other end to the scrubbing mill;

(ii) a pair of lower rear links, one on either side of the scrubbing mill, each of which is pivotally attached at one end to the frame; and

(iii) a pair of upper rear links, one on either side of the scrubbing mill, each of which is pivotally attached at one end to a lower rear link and pivotally attached at the other end to the scrubbing mill; and

(b) a pair of actuators which cooperate with the linkage assembly, one on either side of the scrubbing mill, each of which is pivotally attached at one end to the frame and pivotally attached at the other end to the scrubbing mill, so that operation of the actuators will, with the cooperation of the linkage assembly and the front elevation assembly, move the scrubbing mill between the transport configuration and the operational configuration.

10. The assembly of claim 7 wherein the rear elevation assembly comprises:

(a) a linkage assembly comprising a pair of forward links, one on either side of the scrubbing mill, each of which is pivotally attached at one end to the frame and pivotally attached at the other end to the scrubbing mill; and

(b) a pair of actuators which cooperate with the linkage assembly, one on either side of the scrubbing mill, each of which is pivotally attached at one end to the frame and pivotally attached at the other end to a forward link, so that operation of the actuators will, with the cooperation of the linkage assembly and the front elevation assembly, move the scrubbing mill between the transport configuration and the operational configuration.

11. A portable screening and washing assembly having a front end and a rear end, said assembly comprising:

(a) a frame having a wheelset;

(b) a scrubbing mill that is mounted on the frame and adapted to move between a transport configuration and an operational configuration;

said scrubbing mill being;

(i) mounted above the fine material washer in the transport configuration;

(ii) mounted nearer to the rear end than the front end;

(iii) adapted, in the operational configuration, to process an aggregate slurry mixture, thereby producing a processed aggregate mixture;

(iv) adapted, in the operational configuration, to discharge the processed aggregate mixture into the vibratory screen assembly;

(c) a vibratory screen assembly that is mounted on the frame, said vibratory screen assembly being;

(i) mounted nearer to the front end than the rear end;

(ii) adapted, in the operational configuration, to separate aggregate materials of various particle sizes from the processed aggregate mixture discharged from the scrubbing mill;

(iii) adapted, in the operational configuration, to discharge aggregate materials into the fine material washer;

(d) a fine material washer that is mounted on the frame and adapted to move between a transport configuration and an operational configuration, said fine material washer being;

(i) adapted to dewater aggregate materials received from the vibratory screen assembly;

(ii) mounted nearer to the rear end than the front end.

12. The assembly of claim 11 wherein the scrubbing mill comprises a blademill having a pair of augers with paddle assemblies mounted thereon.

13. The assembly of claim 11 wherein the vibratory screen assembly comprises a triple deck screen.

14. The assembly of claim 11 wherein the fine material washer comprises a pair of augers.

15. The assembly of claim 11 wherein the scrubbing mill includes a scrubbing mill hopper for introduction of the aggregate slurry mixture and a scrubbing mill chute through which the processed aggregate mixture may be discharged into the vibratory screen assembly.

16. The assembly of claim 15 wherein the scrubbing mill chute is disposed at an angle within the range of 35°

to 65°

when the scrubbing mill is in the operational configuration.

17. A portable screening and washing assembly comprising:

(a) a frame having;

(i) a front end;

(ii) a rear end; and

(iii) a wheelset;

(b) a scrubbing mill that is;

(i) mounted on the frame;

(ii) adapted to move between a transport configuration and an operational configuration;

(iii) mounted above the fine material washer in the transport configuration;

(iv) adapted, in the operational configuration, to process an aggregate slurry mixture, thereby producing a processed aggregate mixture;

(v) adapted, in the operational configuration, to discharge the processed aggregate mixture into the vibratory screen assembly;

(c) a vibratory screen that is;

(i) mounted on the frame;

(ii) adapted, in the operational configuration, to separate aggregate materials of various particle sizes from the processed aggregate mixture discharged from the scrubbing mill;

(iii) adapted, in the operational configuration, to discharge aggregate materials into the fine material washer;

(d) a fine material washer that is;

(i) mounted on the frame;

(ii) adapted to move between a transport configuration and an operational configuration;

(iii) adapted to dewater aggregate materials received from the vibratory screen assembly;

(e) means mounted on the frame for moving the scrubbing mill between the transport configuration and the operational configuration;

(f) means mounted on the frame for moving the fine material washer between the transport configuration and the operational configuration.

18. The assembly of claim 17 wherein the scrubbing mill includes a scrubbing mill hopper for introduction of the aggregate slurry mixture and a scrubbing mill chute through which the processed aggregate mixture may be discharged into the vibratory screen assembly.

19. The assembly of claim 18 wherein the scrubbing mill chute is disposed at an angle within the range of 35°

to 65°

when the scrubbing mill is in the operational configuration.

20. The assembly of claim 18 which is sized and configured, when in the transport configuration, to be transportable over state-regulated highways.