CN2214237Y

CN2214237Y - Spiral roller bolting mill

Info

Publication number: CN2214237Y
Application number: CN 94231430
Authority: CN
Inventors: 张兆连
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-12-07
Filing date: 1994-12-07
Publication date: 1995-12-06
Anticipated expiration: 2004-12-07

Abstract

The utility model relates to a spiral roller bolting mill, which is composed of a cylinder-shaped screen body, support rollers, a drive part, a cleaning device and a protective cover, wherein, both ends of the screen body are respectively provided with an annular track; the end of the screen body is wound with a sleeve roller chain, axial support beams are homogeneously distributed on the screen body, and the outside of the screen body is provided with annular screen bars; the support rollers are contacted with tracks on both ends of the screen body, the drive part is composed of a motor speed reducer and chain wheels, and the cleaning device is provided with cleaning teeth. The spiral roller bolting mill has the advantages of large effective area of the screen surface, high screening efficiency, strong applicability, low energy consumption, easy manufacture, convenient installation and maintenance, no blockage of the screening surface, etc.

Description

Spiral roller bolting mill

The utility model relates to a kind of helix drum screening machine, and it can be with coal, the sieving machine that various materials such as ore are separated by different granularity requirements.

Novel CFBB is promoted the use of in the small-sized thermal power plant of China recently, this boiler requires the coal-fired granularity must be less than 10mm, yet the used bunker coal of power plant does not reach this standard at present, the bunker coal of various granularities is mixed in together, need processing once more to handle, the desirable technical process of processing processing should be that various granularities coal mixed in together is sieved once more, with separating below the granularity 10mm, residue branch sends crusher in crushing to, can give full play to the maximum capacity of various plant equipment like this, being most economical, also is the most rational.But present employed sieving machine such as roller picker, the fluctuation sieve, vibratory sieves etc. are all at below granularity 25～30mm and design, they do not satisfy the following screening requirement of granularity 10mm, in order to satisfy CFBB coal requirement, the bunker coal of coming in is sent to crusher in crushing without exception, because coal dust exists, sometimes also contain very high moisture content, cause disintegrating machine to stop up easily, increase the wearing and tearing of disintegrating machine, influence exerting oneself of disintegrating machine, consume a large amount of energy, do not guarantee the normal coal of going up of coal handling system, the coal-fired granularity in back that is broken in addition can not reach the granularity requirements standard fully.

The purpose of this utility model is a kind of sieving machine that is applicable to the following screening of material fine granularity, particularly 10mm of design, to satisfy the coal-fired helix drum screening machine that requires of CFBB.

Helix drum screening machine such as Fig. 1 are shown in Figure 2, by sieve nest 14, backing roll 10, drive part 11, cleaning plant 12, guard shield 6 parts such as grade are formed, respectively there is a circular orbit 3 at cylindrical shape sieve nest two ends, wherein head one end is wound with a sleeve-barrel roollr chain 7, and is fixed on the sieve nest, and the two ends end to end of sieve nest are evenly distributed with axial support beam 4 by circumference, axial support beam outside is equipped with annular grating 5, inner screwy fin 2 is equipped with in the inside, and the radical and the sectional dimension of axial support beam are decided according to requirement of strength, and the spacing between the annular grating 5 is to determine (should be slightly larger than 10mm as the coal-fired granularity requirements of CFBB) according to the screenings granularity requirements.

Backing roll 10 plays the effect of supporting sieve nest, and backing roll contacts with the circular orbit 3 at sieve nest two ends, and sieve nest can rotate on backing roll 10.

Drive part 11 is power resources, is made up of motor reducer and sprocket wheel 9, and sprocket wheel is meshed with sleeve-barrel roollr chain 7 on the sieve nest.

Cleaning plant 12 is equipped with equidistant equally distributed cleaning tooth 13, and the cleaning tooth interts 5 of annular gratings, and the cleaning tooth is made with flexible material.

The work of this machine is to be finished by sieve nest 14 rotations that the sprocket wheel of drive part 11 and 7 engagements of the sleeve-barrel roollr chain on the sieve nest drive on the backing roll, after machine start, material enters in the sieve nest from the head material inlet 15 of sieve nest, afterbody to sieve nest under the promotion of inner screwy fin 2 moves, in the material moving process, granularity will be leaked down from the gap less than the particle in grating gap and be moved to the sieve nest afterbody under the promotion of inner screwy fin greater than the particle in grating gap, is discharged from from oversize outlet 17 at last and enters crusher in crushing.

The utility model its advantage compared with the prior art is:

1. the effective area of compass screen surface is big, and this machine adopts annular grating structure, and the screening raw meal particle size is big more, and the grating spacing is big more, and effective area is just big more.

2. screening efficiency height, material move simultaneously to afterbody in sieve nest, owing to exist friction between material and sieve nest, make circular motion with sieve nest, when the gravity of material during greater than friction material will roll and flow to the sieve nest outside, sifted out easily, the efficient of screening is high relatively.

3. non-blocking screen face, because compass screen surface is equipped with cleaning plant, the cleaning tooth of cleaning plant interts between annular grating, cleaning at any time is bonded at coal dust or other material on the grating.

4. adaptability is strong, not only is adapted to various material screenings, as long as adjust the screening that annular grating spacing just can be used for various different grain size requirements.

Characteristics such as in addition, it is low that this rotary screen also has power consumption, manufactures easily, and cost is low, and installation and maintenance are convenient.

Description of drawings:

Fig. 1 is the front view of helix drum screening machine;

Fig. 2 be among Fig. 1 A to (side) view;

Number in the figure: 1. sieve nest afterbody; 2. inner screwy fin; 3. circular orbit; 4. axial support beam; 5. annular grating; 6. guard shield; 7. sleeve-barrel roollr chain; 8. sieve nest head; 9. sprocket wheel; 10. backing roll; 11. motor reducer; 12. cleaning plant; 13. cleaning tooth; 14. sieve nest; 15. material inlet; 16. screenings outlet; 17. oversize outlet.

Embodiment of the present utility model:

This rotary screen extension set sieve nest head 8 is connected with axial support beam 4 with sieve nest afterbody 1 usefulness bolt or welds together, annular grating 5 is asked equidistant by granularity and is welded on the axial support beam, inner screwy fin 2 is welded in brace summer 4 inboards, sleeve-barrel roollr chain 7 is centered around on the sieve nest head 8 and with bearing pin and fixes, sieve nest 14 is installed and is placed on the backing roll 10, motor reducer is installed on the support, makes sleeve-barrel roollr chain 7 engagements on sprocket wheel 9 and the sieve nest; Cleaning plant 12 is installed on the other basis of sieve nest, and cleaning tooth 13 interts 5 of annular gratings, and guard shield 6 covers on sieve nest 14, and is also fixing on motor deceleration, the sprocket wheel 9; Be provided with material inlet 15 at the sieve nest head, below sieve nest, be provided with material outlet 16, be provided with oversize outlet 17 at the sieve nest afterbody.

Claims

1, helix drum screening machine, by sieve nest (14), backing roll (10), drive part (11), cleaning plant (12) and guard shield parts such as (6) are formed, and it is characterized in that:

A: respectively there is a circular orbit (3) at cylindrical shape sieve nest (14) two ends, wherein head is wound with a sleeve-barrel roollr chain (7), and be fixed on the sieve nest, the two ends end to end of sieve nest are evenly distributed with axial support beam (4) by circumference, this brace summer outside is equipped with annular grating (5), and inner screwy fin (2) is equipped with in the inside;

B: backing roll (10) contacts with the circular orbit (3) at sieve nest two ends, and sieve nest can be gone up at backing roll (10) and rotate;

C: drive part (11) is made of motor reducer and sprocket wheel (9), and sprocket wheel (9) is meshed with sleeve-barrel roollr chain (7) on the sieve nest;

D: the cleaning tooth (13) that cleaning plant (12) is equipped with and equidistantly distributes, make with flexible material.

2,, it is characterized in that clearing up tooth (13) and intert between annular grating (5) according to the described screening machine of claim 1.

3,, it is characterized in that annular grating (5) is welded on the axial support beam (4) by granularity requirements is equidistant according to the described screening machine of claim 1.

According to the described screening machine of claim 1, it is characterized in that 4, inner screwy fin (2) is welded in axial support beam (4) inboard.

5,, it is characterized in that sleeve-barrel roollr chain (7) is centered around sieve nest head (8) and goes up and fix with bearing pin according to the described screening machine of claim 1.

6,, it is characterized in that guard shield (6) covers on that sieve nest (14), motor reducer (11), sprocket wheel (9) are gone up and fixing according to the described screening machine of claim 1.

7, it is characterized in that being provided with material inlet (15) according to the described screening machine of claim 1, below sieve nest, be provided with material outlet (16), be provided with oversize outlet (17) at the sieve nest afterbody at the sieve nest head.