System for squeezing, smashing and winnowing municipal solid waste

Patent metadata

Field	Value
Publication number	US-10272441-B2
Application number	US-201315033511-A
Country	US
Kind code	B2
Filing date	Nov 18, 2013
Priority date	Oct 30, 2013
Publication date	Apr 30, 2019
Grant date	Apr 30, 2019

Abstract

The invention discloses a system for squeezing, smashing and winnowing municipal solid waste (MSW). The system comprises a primary squeezing and smashing, device and a secondary smashing and winnowing device. The system of the invention has good effect m squeezing, smashing and winnowing, can greatly reduce the water content of MSW and efficiently separate the MSW into combustible matters and non-combustible matters, so as to facilitate further subsequent utilization of the municipal waste; moreover, an upper jaw of a jaw crusher is connected with a spring device, so that the squeezing pressure, smashing effect and processing capacity of the jaw crusher can be adjusted according to the amount of the MSW. In addition, the system of the invention is further provided with emergency brake switches, spring protection devices and a sieve, so as to ensure the stability and the reliability of the system.

First claim

The invention claimed is:

1. A system for squeezing, smashing and winnowing municipal solid waste, comprising:
a primary squeezing and smashing device including
a feeding port at a top of the primary squeezing and smashing device,
a storage bin below the feeding port,
a hydraulic pushing device provided left of the storage bin,
a squeezing zone provided right of the storage bin,
a squeezing and smashing zone provided right of the squeezing zone,
a discharge port provided right of the squeezing and smashing zone,
a filter screen mounted at a joint of the squeezing zone and the squeezing and smashing zone,
a leachate pipeline connected with a bottom of the filter screen, and
a jaw crusher mounted in the squeezing and smashing zone, a lower jaw of the jaw crusher being provided with apertures through which waste leachate flows down to a bottom surface of the squeezing and smashing zone;

a secondary smashing and winnowing device including
a feeding port at a top of the secondary squeezing and smashing device,
a smashing bin below the feeding port,
a sieve below the smashing bin,
a winnowing chamber below the sieve,
a conveying belt which receives non-combustible matter below the winnowing chamber,
a slow revolving knife and a fast revolving knife identical in revolving direction and which are arranged adjacent to each other in the smashing bin, the slow revolving knife being mounted below the feeding port, and
a fan mounted on left of the winnowing chamber; and

a baffle and a baffle conveying belt mounted above the baffle, disposed between the primary squeezing and smashing device and the secondary smashing and winnowing device;
wherein a first side of the baffle is connected with the leachate pipeline of the primary squeezing and smashing device, and a second side of the baffle is connected with the feeding port of the secondary smashing and winnowing device so that the waste leachate flows to the leachate pipeline;
wherein a feeding end of the baffle conveying belt is positioned below the discharge port of the primary squeezing and smashing device, and a discharge end of the baffle conveying belt is positioned above the feeding port of the secondary smashing and winnowing device; and
wherein a running direction of the conveying belt of the secondary smashing and winnowing device is opposite to a wind direction of the fan.

2. The system of claim 1 , wherein in the primary squeezing and smashing device, a maximum travel of a pushing rod of the hydraulic pushing device is up to a rightmost end of the storage bin.

3. The system of claim 1 ,
wherein a bottom surface of the squeezing zone inclines downwards from a leftmost end to a rightmost end thereof, and
wherein the bottom surface of the squeezing and smashing zone inclines downwards from a rightmost end to a leftmost end thereof.

4. The system of claim 3 ,
wherein a downward inclination angle of the bottom surface of the squeezing zone from the leftmost end to the rightmost end thereof is 6-10°, and
wherein a downward inclination angle of the bottom surface of the squeezing and smashing zone from the rightmost end to the leftmost end thereof is 6-10°.

5. The system of claim 1 ,
wherein staggered acute-angled serrated smashing blades are uniformly mounted on inner sides of an upper jaw of the jaw crusher and the lower jaw of the jaw crusher;
wherein an angle between a knifepoint direction of the smashing blades and a feeding direction of the secondary smashing and winnowing device is an acute angle; and
wherein the lower jaw of the jaw crusher is fixed, and the upper jaw is connected with a spring device such that the upper jaw can swing up and down.

6. The system of claim 1 , wherein a revolving speed of the fast revolving knife in the smashing bin is 5-10 times of a revolving speed of the slow revolving knife.

7. The system of claim 1 ,
wherein a left wall and a right wall of the smashing bin are able to swing,
wherein emergency brake switches are mounted on the left and right walls respectively; and
wherein spring protection devices are mounted between a central axis of the slow revolving knife and the left wall of the smashing bin and between a central axis of the fast revolving knife and the right wall of the smashing bin respectively.

8. The system of claim 1 ,
wherein the sieve includes ropes and a rectangular base structure;
wherein the ropes are all arranged in parallel on the rectangular base structure;
wherein a first end of each rope is fixed on the rectangular base structure; and
wherein a weight is hung at a second end of the rope, the second end of the rope passing through a slide fastener on the rectangular base structure.

9. The system of claim 8 , wherein a distance between adjacent ropes is 50-80 mm.

10. The system of claim 1 , wherein the conveying belt of the secondary smashing and winnowing device is an adaptive conveying belt capable of changing speed according to a load.

Assignees

• Guangzhou Inst Energy Conversion Cas

Inventors

• Yuan Haoran
• Lu Tao
• Wang Yazhuo
• Chen Yong
• Zhang Chiguang

Classifications

• B30B9/062

  Extrusion presses · CPC title

• B02C23/38

  in apparatus having multiple crushing or disintegrating zones · CPC title

• B03B9/06

  specially adapted for refuse · CPC title

• B02C23/16

  with separator defining termination of crushing or disintegrating zone, e.g. screen denying egress of oversize material · CPC title

• B02C18/0084

  specially adapted for disintegrating garbage, waste or sewage · CPC title