CN102698955A

CN102698955A - Frustum diffusion grader

Info

Publication number: CN102698955A
Application number: CN2012101692710A
Authority: CN
Inventors: 王华业
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-05-22
Filing date: 2012-05-22
Publication date: 2012-10-03

Abstract

The invention discloses a frustum diffusion grader which belongs to the field of grading devices and is mainly applied to such industries as cement, chemical industry and metallurgy. When an existing vibrating sieve grades a material, the material on the sieve surface is dispersed unevenly, local part of the sieve surface is worn seriously, the sieving efficiency is low, the fluid grading energy consumption is high, and the abrasion on components is generated rapidly. The frustum diffusion grader comprises a speed adjusting transmission device, a material scattering disc, a material blocking ring, a frustum diffusion vibrating sieve, an inner pyramid, an outer pyramid and a barrel body. The frustum diffusion grader sieves and grades the materials by mechanical force without depending on wind force, so that energy consumption is low; the material scattering disc is arranged on the upper part of the frustum diffusion grader, so that the material can be uniformly scattered on the sieve surface; the frustum-shaped sieve surface is upright, the sieve surface is small on the upper part and large on the lower part, so that materials can be further graded on the sieve surface, thereby improving the grading efficiency and simultaneously improving the processing capacity in a unit area. Besides, the materials are distributed uniformly on the sieve surface, so that the abrasion on the sieve surface is small, and the service life of the sieve is long.

Description

Terrace with edge diffusion grader

Technical field:

The invention belongs to the classifying equipoment field, be mainly used in of the classification of industries such as cement, chemical industry, metallurgy, also can be used in the powder producing system for alleviating the level of presorting of fluid classifying equipoment load greater than the 0.5mm granule materials.

Background technology:

The meal classification of existing techniques mainly contains two kinds, and first kind is utilized rectangular mesh screen surface vibration sieve to carry out rough classification, because material to be sieved receives process technology limit; Usually has only a charging aperture; And width is consistent about the compass screen surface, on compass screen surface, disperses inequality when causing mass flow big, and the compass screen surface concentrated wear is serious; Screening efficiency is low, is difficult to adapt to big flow screening; Second kind is utilized fluid to carry out rough classification, and V-type grader and centrifugal blower are composed in series the fluid classifying equipoment, more suitable for the fine powder size scale less than 0.1mm; When being used for the meal classification greater than 0.5mm; Because of wanting the continuous flowing coarse granule, so power consumption is high, component abrasion is fast.

Summary of the invention:

The object of the invention is to provide the terrace with edge diffusion that can address the aforementioned drawbacks grader, not only has higher classifying capability but also power consumption and economizes, and it is little to wear and tear.

Technical scheme of the present invention is: terrace with edge diffusion grader comprises: spreading disk is driven by the speed-regulating actuator that is installed on the cylindrical shell top cover; The blocking material ring upside-down mounting constitutes annular with the spreading disk outer rim and unloads material space under the cylindrical shell top cover; Terrace with edge diffusion vibratory sieve comprises the terrace with edge shape screen frame (unit) of just putting; One group is inlaid in the screen frame with the corresponding trapezoidal sieve sheet of each trapezoidal screen frame of terrace with edge shape screen frame (unit); Whole formation terrace with edge diffusion type compass screen surface, a vibrating motor is installed in top in the terrace with edge shape screen frame (unit), below terrace with edge shape screen frame (unit), adopts isolation mounting with the cylindrical shell joining place; Supporting terrace with edge shape screen frame (unit), the space that following string of terrace with edge shape screen frame (unit) and cylinder inwall arc form are formed sieve and are gone up meal annular discharging area; The Outer Taper upper limb is connected with the top cylindrical shell, and the bottom is the meal outlet; Inner cone is suitable for reading corresponding with terrace with edge diffusion type compass screen surface frontal plane of projection, and the fine powder outlet of bottom tiltedly goes out from the Outer Taper side, and inner cone connects through steel plate and is suspended in the Outer Taper.

Described terrace with edge diffusion vibratory sieve, screen angle are less than natural stocking angle, and the amplitude of vibrating motor is adjustable with the frequency that shakes.

Working mechanism of the present invention is: material gets into from the feed hopper at middle part, and the middle part that the process hopper is fallen the spreading disk of rotation is under the spreading disk action of centrifugal force; Material is shed equably; Formation material curtain after partial material collides the blocking material ring in the outside, loses kinetic energy and spreads on the top compass screen surface of vibratory sieve to terrace with edge down equably along blocking material ring; Under the effect of vibrating motor; Material moves down along the diffusion compass screen surface, and the terrace with edge shape compass screen surface of just putting is up-small and down-big to help the progressively separation of material in folding process, sees through at fine powder under the effect of sliding force and exciting force in the process that moves down and arrives inner cone under the sieve slit and discharge from the fine powder mouth; Meal moves down into the annular space of cylindrical shell downside along compass screen surface, falls in the Outer Taper and discharges from the meal mouth.

The invention has the beneficial effects as follows: terrace with edge diffusion grader does not rely on wind-force to pass through the sieve classification that mechanical force has realized material, consuming little energy.Be provided with spreading disk on terrace with edge diffusion grader top, can even throwing of material be dispersed on the compass screen surface, and terrace with edge shape compass screen surface just put; Compass screen surface is up-small and down-big; Help the further classification of material on compass screen surface, improved classification efficiency, improved the unit are disposal ability simultaneously.In addition, material is evenly distributed on compass screen surface, and the compass screen surface wearing and tearing are little, and prolong the service life of sieve greatly.

Description of drawings:

Below in conjunction with accompanying drawing the present invention is further specified:

The structure chart of Fig. 1 terrace with edge diffusion grader

Fig. 2 is the A-A profile of Fig. 1

Among the figure: 1 speed-regulating actuator, 2 spreading disks, 3 feed hoppers, 4 hoppers, 5 blocking material rings, 6 terrace with edges diffusion vibratory sieve, 7 top covers, 8 cylindrical shells, 9 diffusion type compass screen surfaces, 10 terrace with edge shape screen frame (unit)s, 11 vibrating motors, 12 isolation mountings, 13 inner cones, 14 Outer Taper, 15 steel plates, 16 fine powders export the outlet of 17 meal

The specific embodiment:

As shown in Figure 1, terrace with edge diffusion grader is made up of speed-regulating actuator 1, spreading disk 2, feed hopper 3, hopper 4, blocking material ring 5, terrace with edge diffusion vibratory sieve 6, inner cone 13, Outer Taper 14, cylindrical shell 8.Spreading disk 2, it is driven by the speed-regulating actuator 1 that is installed on cylindrical shell 8 top covers 7; Blocking material ring 5, upside-down mounting constitute annular with spreading disk 2 outer rims and unload material space cylindrical shell 8 top covers 7 times.Like Fig. 1, shown in Figure 2; Terrace with edge diffusion vibratory sieve 6; Comprise 10, one groups of terrace with edge shape screen frame (unit)s and the corresponding trapezoidal sieve sheet of terrace with edge shape screen frame (unit) 10 each trapezoidal screen frame just put and be inlaid in the screen frame, whole formation terrace with edge diffusion type compass screen surface 9; A vibrating motor 11 is installed in top in the terrace with edge shape screen frame (unit) 10; Below terrace with edge shape screen frame (unit) 10, adopt isolation mounting 12 with cylindrical shell 8 joining places, supporting terrace with edge shape screen frame (unit) 10, the space that terrace with edge shape screen frame (unit) 10 following strings and cylinder 8 inwall arcs form is formed sieve and is gone up meal annular discharging area.Outer Taper 14 upper limbs are connected with the top cylindrical shell, and the bottom is meal outlet 17.Inner cone 13 is suitable for reading corresponding with terrace with edge diffusion type compass screen surface 9 frontal plane of projection, and the fine powder of bottom outlet 16 tiltedly goes out from the Outer Taper side, and inner cone connects through steel plate 15 and is suspended in the Outer Taper 14.

Claims

1. terrace with edge spreads grader, it is characterized in that:

Spreading disk is driven by the speed-regulating actuator that is installed on the cylindrical shell top cover; Blocking material ring is lifted under the cylindrical shell top cover, constitutes annular with the spreading disk outer rim and unloads material space; Terrace with edge diffusion vibratory sieve comprises the terrace with edge shape screen frame (unit) of just putting; One group is inlaid in the screen frame with the corresponding trapezoidal sieve sheet of each trapezoidal screen frame of terrace with edge shape screen frame (unit); Whole formation terrace with edge diffusion type compass screen surface, a vibrating motor is installed in top in the terrace with edge shape screen frame (unit), below terrace with edge shape screen frame (unit), adopts isolation mounting with the cylindrical shell joining place; Supporting terrace with edge shape screen frame (unit), the space that following string of terrace with edge shape screen frame (unit) and cylinder inwall arc form are formed sieve and are gone up meal annular discharging area; The Outer Taper upper limb is connected with the top cylindrical shell, and the bottom is the meal outlet; Inner cone, suitable for reading corresponding with terrace with edge diffusion type compass screen surface frontal plane of projection, the fine powder outlet of bottom tiltedly goes out from the Outer Taper side, and inner cone connects through steel plate and is suspended in the Outer Taper.

2. terrace with edge diffusion vibratory sieve according to claim 1, screen angle are less than natural stocking angle, and the amplitude of vibrating motor is adjustable with the frequency that shakes.