Dry-bulk tanker, conveying system for a dry-bulk tanker, work train and method for conveying binding agents for a work train

Patent metadata

Field	Value
Publication number	US-11326312-B2
Application number	US-202016876524-A
Country	US
Kind code	B2
Filing date	May 18, 2020
Priority date	Jun 5, 2019
Publication date	May 10, 2022
Grant date	May 10, 2022

Abstract

A dry-bulk tanker for the provision of binding agent for soil stabilization for a spreading device, comprising a storage container (10) for binding agent. An intermediate chamber (20) is connected to the storage container and is also connected to a compression chamber (40). A conveying device (22) for conveying of binding agent into the compression chamber (40) is arranged in the intermediate chamber (20). A conveying channel (44) is connected to the compression chamber (40). The conveying channel (44) can be connected to a spreading device (58). Furthermore, a pneumatic line (46) for feeding of conveying compressed air is connected to the compression chamber (40) and/or the conveying channel (44).

First claim

The invention claimed is:

1. A dry-bulk tanker for the provision of binding agent for soil stabilization to a spreader, the dry-bulk tanker comprising:
a storage container for the binding agent;
an intermediate chamber connected to the storage container;
a compression chamber connected to the intermediate chamber;
a conveyor arranged in the intermediate chamber for conveying the binding agent into the compression chamber;
a conveying channel connected to the compression chamber and configured to be connected to the spreader; and
a pneumatic line connected to at least one of the compression chamber and the conveying channel for feeding of conveying compressed air.

2. The dry-bulk tanker of claim 1 , wherein:
the compression chamber includes a cross-section tapered to reduce the cross-section in a conveying direction.

3. The dry-bulk tanker of claim 1 , wherein:
the conveying channel includes a conveying channel longitudinal direction;
the compression chamber includes a compression chamber longitudinal direction; and
the conveying channel longitudinal direction and the compression chamber longitudinal direction form an angle greater than 0 degrees, where 0 degrees is defined as a coaxial arrangement.

4. The dry-bulk tanker of claim 3 , wherein:
the angle is greater than 50 degrees.

5. The dry-bulk tanker of claim 3 , wherein:
the angle is greater than 90 degrees.

6. The dry-bulk tanker of claim 1 , wherein:
the conveying channel includes a conveying channel longitudinal direction; and
the pneumatic line is connected to the conveying channel such that the conveying compressed air flows into the conveying channel substantially in the conveying channel longitudinal direction.

7. The dry-bulk tanker of claim 1 , wherein:
the conveyor is a screw conveyor.

8. The dry-bulk tanker of claim 1 , further comprising:
a compression device configured to compress the binding agent in the compression chamber, the compression device being arranged in at least one of the intermediate chamber and the compression chamber.

9. The dry-bulk tanker of claim 8 , wherein:
the compression device is formed by an end region of the conveyor, the end region being defined in a conveying direction of the conveyor.

10. The dry-bulk tanker of claim 1 , wherein:
the conveyor protrudes into the compression chamber.

11. The dry-bulk tanker of claim 1 , wherein:
the conveyor is configured to compress the binding agent in a conveying direction in an end region of the conveyor.

12. The dry-bulk tanker of claim 11 , wherein:
the conveyor is a screw conveyor having a pitch reducing in the conveying direction in the end region.

13. The dry-bulk tanker of claim 11 , wherein:
the conveyor is a double flight screw conveyor in the end region.

14. The dry-bulk tanker of claim 1 , wherein:
the intermediate chamber includes an inlet opening connected to the storage container; and
the dry-bulk tanker further includes a cover configured to partially close the inlet opening.

15. The dry-bulk tanker of claim 14 , wherein:
the cover is arranged in an end region of the conveyor in a conveying direction.

16. The dry-bulk tanker of claim 1 , further comprising:
a closing element arranged between the compression chamber and the conveying channel.

17. The dry-bulk tanker of claim 16 , wherein:
the closing element being configured to reduce a passage cross-section between the compression chamber and the conveying channel.

18. The dry-bulk tanker of claim 16 , wherein:
the closing element being configured to direct at least one of binding agent flow and conveying compressed air flow.

19. The dry-bulk tanker of claim 1 , further comprising:
a rotary feeder between the storage container and the intermediate chamber for conveying the binding agent from the storage container into the intermediate chamber.

20. The dry-bulk tanker of claim 1 in combination with a self propelled ground working machine to form a work train, the self-propelled ground working machine including:
a mixing rotor arranged inside a rotor housing; and
the spreader, wherein the spreader is configured to spread the binding agent.

21. The work train of claim 20 , wherein:
the spreader includes a buffer container for the binding agent, the buffer container being connected to the conveying channel of the dry-bulk tanker.

22. A conveying system for a dry-bulk tanker for the provision of binding agent for soil stabilization to a spreader, the conveying system comprising:
an intermediate chamber;
a compression chamber connected to the intermediate chamber;
a conveyor arranged in the intermediate chamber for conveying the binding agent into the compression chamber;
a conveying channel connected to the compression chamber and configured to be connected to the spreader; and
a pneumatic line connected to at least one of the compression chamber and the conveying channel for feeding of conveying compressed air.

23. A method of conveying binding agent in a work train including a ground working machine and a dry-bulk tanker, the method comprising steps of:
conveying the binding agent from a storage container of the dry-bulk tanker into an intermediate chamber of the dry-bulk tanker;
conveying the binding agent from the intermediate chamber into a compression chamber of the dry-bulk tanker;
compressing the binding agent in the compression chamber; and
conveying the binding agent from the compression chamber to the ground working machine.

Assignees

• Wirtgen Gmbh

Inventors

• Hess Frederic
• Menzenbach Christoph
• Schiefer Patrick

Classifications

• B65G53/08

  with mechanical injection of the materials, e.g. by screw · CPC title

• B65G2201/045

  Sand, soil and mineral ore · CPC title

• E01C2019/208

  with longitudinal auger · CPC title

• E01C19/202 Primary

  solely rotating, e.g. discharging and spreading drums · CPC title

• E01C19/2035 Primary

  both rotating parts and reciprocating, oscillating, jolting or vibrating parts · CPC title