Title:
NEGATIVE PRESSURE SYSTEM ON GANGUE DISCHARGE SYSTEM FOR AIR-DRY SAND COAL PREPARATION SYSTEM
Document Type and Number:
WIPO Patent Application WO/2020/098687
Kind Code:
A1
Abstract:
A negative pressure system on a gangue discharge system for an air-dry sand coal preparation system, comprising a negative pressure chamber (10), an exhaust fan (11), a medium filter screen (12), a buffer chamber (13), a suction fan (14), a first valve (15), a second valve (16), and a discharge pipe (17). The discharge pipe is located in the buffer chamber; the first valve is located at a feed port of the discharge pipe, and the second valve is located at a discharge port of the discharge pipe; the suction fan is located between the first valve and the second valve and is connected to the discharge pipe; the discharge pipe is communicated with the negative pressure chamber; the upper side of the negative pressure chamber is provided with an exhaust port, the exhaust fan is connected to the exhaust port, and a dust bag is connected to the rear part of the exhaust fan; the medium filter screen is disposed at the exhaust port; the bottom of the negative pressure chamber is provided with a unloading port. The negative pressure system makes it uneasy to damage the equipment when screening gangue and can remove impurities in a medium.
Inventors:
WANG CHENGKUI (CN)
WANG GUANGQING (CN)
XIE JIEKUN (CN)
XIE HUAFENG (CN)
WANG GUANGQING (CN)
XIE JIEKUN (CN)
XIE HUAFENG (CN)
Application Number:
PCT/CN2019/117946
Publication Date:
May 22, 2020
Filing Date:
November 13, 2019
Export Citation:
Assignee:
WANG GUANGLING (CN)
International Classes:
B03B5/46; B03B7/00; B03B11/00; B07B9/00
Foreign References:
| CN109317303A | 2019-02-12 | |||
| CN209238159U | 2019-08-13 | |||
| CN201279508Y | 2009-07-29 | |||
| CN204841987U | 2015-12-09 | |||
| CN1593774A | 2005-03-16 | |||
| US3998728A | 1976-12-21 |
Attorney, Agent or Firm:
CHONGQING ZHONGZHIXIN INTELLECTUAL PROPERTY OFFICE (GENERAL PARTNERSHIP) (CN)
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