Coal and gangue separation device

Patent metadata

Field	Value
Publication number	US-11654440-B2
Application number	US-202117515532-A
Country	US
Kind code	B2
Filing date	Oct 31, 2021
Priority date	Nov 3, 2020
Publication date	May 23, 2023
Grant date	May 23, 2023

Abstract

The present invention proposes a coal and gangue separation device, including a first supporting seat, a guide part and multiple material bins. The guide part is hinged with the first supporting seat; the guide part rotates in a vertical direction; and inlets of the plurality of material bins are sequentially distributed on a rotation track of a movable end of the guide part. In the coal and gangue separation device of the present invention, the high-pressure airflow of a high-pressure nozzle does not directly act on the materials, but on grate bar driving mechanisms; and cantilever grate bars are driven to rotate by the grate bar driving mechanisms so as to directionally discharge the mineral aggregate. Therefore, the gangue can accurately enter a gangue collection bin; and the clean coal can accurately enter a clean coal collection bin.

First claim

What is claimed is:

1. A coal and gangue separation device, comprising:
a first supporting seat;
a cantilever shaft;
a guide part; and
a plurality of stock bins;
wherein the guide part is hinged with the first supporting seat; the guide part rotates in a vertical direction; and inlets of the plurality of stock bins are sequentially distributed on a rotation track of a movable end of the guide part;
wherein the cantilever shaft is horizontally mounted on the first supporting seat; a fixed end of the guide part is connected with the cantilever shaft; and the guide part rotates around the cantilever shaft;
wherein the guide part is composed of a plurality of cantilever grate bars hinged with the cantilever shaft; each of the cantilever grate bars is provided with a corresponding grate bar driving mechanism; and the grate bar driving mechanisms are used to drive the corresponding cantilever grate bars to rotate around the cantilever shaft.

2. The coal and gangue separation device according to claim 1 , each of the grate bar driving mechanisms comprises a first reset spring, a first push rod, and a first high-pressure nozzle; the first reset spring is arranged below the corresponding cantilever grate bar, and both ends of the first reset spring are respectively connected with the first supporting seat and the corresponding cantilever grate bar; and the first high-pressure nozzle is arranged on the first supporting seat and used to blow air towards the first push rod, so as to push the first push rod to drive the cantilever grate bar to rotate.

3. The coal and gangue separation device according to claim 2 , wherein a corresponding inlet of a movable end of the cantilever grate bar that corresponds to the first reset spring in a natural state is located at the stock bin at the highest position.

4. The coal and gangue separation device according to claim 1 , wherein each of the grate bar driving mechanisms comprises a second push rod, a first extrusion rod, and a first chute that is arranged on the lower surface of the cantilever grate bar and located on a rotation plane of the cantilever grate bar; the lower end of the first extrusion rod is hinged with the first supporting seat; a rotation plane of the first extrusion rod coincides with the rotation plane of the cantilever grate bar; a first pulley is arranged at the upper end of the first extrusion rod; the first pulley is embedded into the first chute; the second push rod is a telescopic rod, a fixed end of the second push rod is connected with the first supporting seat. and a movable end of the second push rod is connected with the first extrusion rod; and the second push rod is used to drive the first extrusion rod to rotate by virtue of telescopic motion.

5. The coal and gangue separation device according to claim 4 , wherein the second push rod is an electric telescopic rod or a pneumatic telescopic rod; each of the grate bar driving mechanisms further comprises a first hinging connection rod; one end of the first hinging connection rod is hinged with the first extrusion rod;
and the other end of the first hinging connection rod is hinged with a free end of the second push rod.

6. The coal and gangue separation device according to claim 4 , wherein the second push rod is an arc-shaped pneumatic telescopic rod; the second push rod is located on a concentric circle of a rotation track circle of the first extrusion rod; and the second push rod drives a second extrusion rod to rotate by virtue of deformation.

7. The coal and gangue separation device according to claim 6 , wherein each of the grate bar driving mechanisms comprises a fixed rod, a third push rod, the second extrusion rod, and a second chute formed in the lower surface of each cantilever grate bar; the fixed rod is slantways arranged on the first supporting seat; a third chute is formed in the fixed rod; the third chute and the second chute are located in the same plane; a second pulley and a third pulley are respectively arranged at both ends of the second extrusion rod; the second pulley and the third pulley are respectively embedded into the second chute and the third chute; the third push rod is arranged on the first supporting seat; a movable end of the third push rod is connected with the second extrusion rod; the third push rod is used to drive the second extrusion rod to slide along the fixed rod by virtue of telescopic motion; and the cantilever grate bar rotates along a location change of the corresponding second extrusion rod.

8. The coal and gangue separation device according to claim 1 , wherein each of the grate bar driving mechanisms comprises a fourth push rod; the fourth push rod is vertically arranged on the first supporting seat; the top end of the fourth push rod is hinged with the lower surface of the cantilever grate bar; and the cantilever grate bar rotates along retraction of the corresponding fourth push rod.

Assignees

• Univ Anhui Sci & Technology

Inventors

• Wang Chao
• Zhu Jinbo
• Lv Wenbao
• Zhang Yong
• Yang Ke
• Zhu Hongzheng
• Zhou Wei
• Guo Yongcun

Classifications

• B07C5/361

  Processing or control devices therefor, e.g. escort memory · CPC title

• B07C5/363

  by means of air · CPC title

• B07B1/46

  Constructional details of screens in general; Cleaning or heating of screens · CPC title

• B07B1/42

  Drive mechanisms, regulating or controlling devices, or balancing devices, specially adapted for screens · CPC title

• B07B1/005

  Transportable screening plants · CPC title