Enclosed mixture stirrer using intermittent resonance and method

Patent metadata

Field	Value
Publication number	US-11318429-B2
Application number	US-201716491718-A
Country	US
Kind code	B2
Filing date	Mar 6, 2017
Priority date	Mar 6, 2017
Publication date	May 3, 2022
Grant date	May 3, 2022

Abstract

Provided are an enclosed stirrer using intermittent resonance and a method. The enclosed stirrer comprises: two pairs of parallel tension springs (1), a fixing bracket (2), an elastic cantilever beam (3), a cantilever beam pressure clamping device (6), an eccentric motor (4), an arc-shaped cushion block (5), and an enclosed container (8). The enclosed container (8) is mounted on the fixing bracket (2) by the tension spring (1). The elastic cantilever beam (3) is installed below the enclosed container (8) and is axially parallel to the enclosed container (8). One end of the elastic cantilever beam (3) is mounted on the fixing bracket (2) as a clamping end, the other end of the elastic cantilever beam (3) is connected to the eccentric motor (4) as a movable end. The arc-shaped cushion block (5) is connected above the eccentric motor (4). The arc-shaped cushion block (5) reciprocally strikes the bottom of the enclosed container (8) during operation of the eccentric motor (4).

First claim

What is claimed is:

1. An enclosed stirring machine for mixture materials using intermittent resonance, characterized in that: comprising: two pairs of tension springs which are parallel to each other, a fixed support frame, an elastic cantilever beam, a cantilever pressure clamping device, an eccentric motor, a curve-shaped cushion pad, and an enclosed container,
wherein said enclosed container is mounted to the fixed support frame by the tension springs, said elastic cantilever beam is mounted below said enclosed container and is parallel to an axial direction of said enclosed container, said elastic cantilever beam has one end serving as a clamping end and mounting to said fixed support frame and another end serving as a movable end and connecting to said eccentric motor, said eccentric motor has a top side connected to said curve-shaped cushion pad, said curve-shaped cushion pad reciprocally hits a bottom side of a tail portion of said enclosed container during an operation of said eccentric motor.

2. The enclosed stirring machine for mixture materials using intermittent resonance according to claim 1 , characterized in that: the fixed support frame comprises: a pair of parallel support cantilevers, four parallel support vertical beams, two parallel support side beams, a fixed plate and four weight blocks;
said four support vertical beams are perpendicular to the ground, said two support side beams are axially parallel to said enclosed container and are connected between said support vertical beams, said fixed plate is radially parallel to said enclosed container and is connected between said support vertical beams, said four weight blocks are mounted at a bottom of said four support vertical beams respectively, said two pairs of tension springs has one end mounted on said support cantilevers.

3. The enclosed stirring machine for mixture materials using intermittent resonance according to claim 2 , characterized in that: said two support vertical beams are connected by said support cantilever therebetween at top ends of said support vertical beams and at one end of said two support side beams, one pair of said tension springs have one end fixed on said support cantilever at said one end of said two support side beams;
two said support vertical beams are connected by said support cantilever therebetween at top ends of said support vertical beams and at another end of said two support side beams, another one pair of said tension springs have one end fixed on said support cantilever at said another end of said two support side beams.

4. A method using the enclosed stirring machine for mixture materials using intermittent resonance according to claim 3 , comprising the steps of:
Step 1: obtaining a total natural frequency F′ of a material with a height H and said enclosed container by;
Step 1-1: transporting water and raw materials at liquid state to said enclosed container until reaching the height H, at this time blocking a tapered outlet of said enclosed container;
Step 1-2: obtaining the total natural frequency F′ of the enclosed container and the liquid with the height H based on a suspension spring stiffness K, the height H of the liquid inside the enclosed container, a mass M of the enclosed container, and based on

F
=

1

2
⁢
π

⁢

K

M
+

m
Liquid

and

m
Liquid

=

ρ
Liquid

⁢

d
⁡

(

r
2

⁢
arccos
⁢

r
-
H

r

-

2
⁢
r
⁢
H

-

H
2

⁢

(

r
-
H

)

)

,

where ρliquid refers to a density of liquid inside the enclosed container, d refers to a length of a thin-walled cylinder body of the enclosed container, r refers to an inner cavity radius of the enclosed container; and
Step 1-3: If the raw material being added is a mixture of liquid and solid or a mixture of solid and solid, the mixture can be weighed first and a total mass after mixing can be obtained, then the total natural frequency can be obtained by using formula

F
=

1

2
⁢
π

⁢

K

M
+

m
total

;

Step 2: based on R=60F, determining a real-time rotational speed R of the eccentric motor; establishing a relationship between the rotational speed R and the height H of the raw materials inside the enclosed container by the step 1, and calibrating height values for the thin-walled cylinder body of the enclosed container, if the mixture inside the enclosed container is solid, a relationship between the height of the enclosed container and the rotational speed of the eccentric motor can be determined by field test according to a size and mass of the thin-walled cylinder body and the mass of the solid mixture contained

Assignees

• Univ Northeastern

Inventors

• Ren Zhaohui
• Qiu Hongcheng
• Li Hui
• Li Shangqing
• Wang Huihui
• Wu Huaishuai

Classifications

• B01F35/42

  Clamping or holding arrangements for mounting receptacles on mixing devices · CPC title

• B01F31/861 Primary

  caused by hitting or striking the receptacle · CPC title

• B01F31/70

  Drives therefor, e.g. crank mechanisms · CPC title

• B01F33/5014

  movable by human force, e.g. kitchen or table devices · CPC title

• B01F31/265 Primary

  the vibrations being caused by an unbalanced rotating member · CPC title