CN87207361U

CN87207361U - Rocking screen for high-speed drying and screening material

Info

Publication number: CN87207361U
Application number: CN 87207361
Authority: CN
Inventors: 丁年雄; 孙勇; 季细星
Original assignee: Jiangxi University of Science and Technology
Current assignee: Jiangxi University of Science and Technology
Priority date: 1987-08-01
Filing date: 1987-08-01
Publication date: 1988-03-09

Abstract

The utility model relates to equipment which can simultaneously be used for drying and sieving materials. A single vibrating motor makes a body do horizontal circular vibrations and shimmies around a horizontal axis; materials jump and tumble from the top down along a multi-screw working surface to advance, so sieving is realized. Meanwhile, hot wind blown in from the lower part is thoroughly contacted with the jumping materials through all layers of sieves, moisture is evaporated and carried away in order to realize drying. The utility model organically combines two technologies of drying and sieving, and has the advantages of simple structure, high heat utilization, small occupation area, high productive efficiency, good effect of drying and sieving, application to various material treatments, etc.

Description

Rocking screen for high-speed drying and screening material

The utility model is a kind of equipment that can be used for drying materials and screening simultaneously.

In the prior art, the oven dry of material and screening all are to adopt dryer and two equipment of screening machine to carry out separately.At present, institute's required airflow is few because vibrating dryer has, and blast is low, and rate of drying is fast, drying effect is not subject to material ratio and weighs, the advantages such as influence of granularity difference, especially multilayer vibrating desiccator in horizontal circle movement have adopted the multilayer orifice plate, material and hot blast adverse current, heat is fully used, and floor space is little, thereby obtains using more widely.But multilayer vibrating desiccator in horizontal circle movement needs two vibrating motors of doing synchronous vibration, and cost is higher; The dry materials time for the different grain size size is identical, so be difficult for reaching the purpose of homogeneous drying.Material sorting mode commonly used has the inertia-type linear vibrating screen, the horizontal circle vibratory sieve, and probability screen, vibrosieves such as the sieve that shakes are revolved on uniform thickness sieve and plane.The major defect of preceding two kinds of screening modes is that production efficiency is low, and anti-vibration performance is poor, and noise is big.Probability screen be because can realize at a high speed screening, difficult obstruction and being widely used, but its screen rate is relatively poor, and the material that sieves a kind of specification often needs to adopt the multilayer screen cloth.Uniform thickness sieve compass screen surface utilization rate height, but need bigger floor space and oscillation intensity.It is simple that the sieve structure that shakes is revolved on the plane, and anti-vibration performance is good, can realize the multilayer screening, but the time of staying of material on compass screen surface is shorter, influences screening effect.The oven dry of material and screening are handled and are carried out in two equipment respectively, and not only equipment investment is big, and technological process is long, and occupation area of equipment is big, is unfavorable for the raising of production efficiency.

The utility model is for overcoming above-mentioned defective, dry and two kinds of technologies of screening are organically combined, finishing in an equipment, enhance productivity thereby reach, reduce the device fabrication cost, reduce energy consumption and floor space, alleviate the purpose of working strength of workers.

The utility model adopts separate unit vibrating motor exciting, impels body to do horizontal circle vibration and shimmy around horizontal axis, and its resultant motion can make material jump to roll along the spiral working face from top to bottom to advance, realize screening.In order to be suitable for the screening of plurality of specifications material, the utility model adopts the spiral working face more than two or two.The sieve mesh size of each spiral working face is all inequality.The quantity of discharging opening equates with a number of spiral working face, i.e. the corresponding discharging opening of the bottom of each spiral working face.The middle footpath lead angle of spiral working face is 7 ° to 20 °.The casing of drying machine adopts three-decker.Between overcoat and interior cover, be added with heat-barrier material, can improve the thermal efficiency preferably, prevent heat radiation, improve working conditions.

The utility model is owing to employing separate unit vibrating motor, thereby noise is little, and anti-vibration performance is good, saves energy consumption, and is easy to adjust, and can utilize mechanical oscillation to realize the dry and screening of material simultaneously, and these two kinds of different modes of operation are combined as a whole.Aspect vibration drying, adopt hot blast and material adverse current, contact has improved the thermal efficiency repeatedly.Owing to adopted the screen cloth working face, make the stroke of large granular materials than the stroke of granule for long, satisfied the requirement different in size drying time of size particles different material, thereby realized the purpose of homogeneous drying, heat is fully utilized.Aspect vibrosieve, utilized probability screening with constant bed thickness principle, make inclined working common in the probability screen into helicoid, thereby reduced the floor space of equipment, increase the movement length of material on compass screen surface, helped the drying of material, improved screening effect.

Fig. 1 is a structural representation of the present utility model.

Embodiment of the present utility model is provided by following:

Casing is to be made of overcoat 7 and interior cover 9.Be filled with insulation material 8 between the interior overcoat, for example adopt polyurethane foam plastic or glass fibre or asbestos etc.The cover plate 1 of casing upper end has charging aperture 3, exhaust outlet 2 and screw 20, is connected with blast pipe 4 by the screw 20 of bolt with the blast pipe upper end.Casing is placed on the boss 11.Boss and blast pipe 4 fuse.Unclamp cover plate 1, casing is removable, helps cleaning the dirt in the screen cloth.The hoop cover 13 of two semicircle shapes is connected as a single entity boss 11 and vibrating motor seat 16, and it is fastening to adopt bolt to connect between the hoop cover.Unclamp hoop cover 13, boss can separate with support together with body, so that the I﹠M of equipment.Vibrating motor seat 16 is supported on the support 15 by several springs 18.In the circumferencial direction symmetry 4 amplitude limit rods 14 are housed between vibrating motor seat and the support.The elastic steel bar that the amplitude limit rod is equipped with rubber sleeve by the outside is formed.It can prevent body shimmy significantly when crossing resonance region effectively, can reduce the impact between body and the amplitude limit rod again.The outside Joint of spiral working face 5 and blast pipe 4 in order to increase its intensity, is provided with working face and protects frame 6 and working face reinforcement 10.The Internal and external cycle pitch of 4 spiral working faces should equate that wherein footpath lead angle optimum value is 9 ° to 13 °.The screen cloth eye size of each spiral working face differs, the mesh size unanimity of same helicoid.Charging aperture 3 is corresponding to the spiral working face of mesh size maximum.

During work, vibrating motor 17 produces excitings, and body is done horizontal circle vibration and shimmy around horizontal axis.Material enters from feeding mouth 3, and the material of different size is fallen on the corresponding spiral working face.Material jumps to roll along the spiral working face from top to bottom and advances, and realizes screening.Simultaneously, hot blast enters in the machine from blast pipe 4, and the hot blast introducing port 19 through the blast pipe bottom sees through each layer screen cloth then, fully contacts with the material of beating, and with its water evaporates and take away, discharges from exhaust duct 2 at last.The length of dry materials time can realize by the speed that the control material moves on the spiral working face.Material after drying and the screening is discharged from corresponding discharging opening 12.

Vibrating motor of the present utility model is equipped with 4 adjustable eccentric pieces, each 2 up and down. By different adjustment, change the up and down angle between the inclined to one side power, thereby change movement locus and the speed of material on helicoid, its scope of application can expand food to, the industries such as agricultural, chemical industry, medicine, be particularly useful for oven dry and the screening of the demanding material of surface quality, such as monosodium glutamate, glucose, Radix Isatidis granules, milk powder etc. The utility model also can use as drying machine or screening machine separately.

Claims

1, a kind of by the cover plate 1 that has charging aperture 3 and exhaust outlet 2, blast pipe 4, discharging opening 14, shock-absorbing spring 18, casing and be contained in the device that can be used for drying materials and screening simultaneously that the vibrating motor 17 of organism bottom is formed, it is characterized in that being provided with and two of blast pipe 4 Joints or the helical screens working face 5 more than two, the mesh size of each helical screens working face is all inequality.

2, device according to claim 1 is characterized in that only adopting one can make body produce the horizontal circle vibration and around the shimmy vibrating motor 17 of horizontal axis.

3, device according to claim 1 and 2, the quantity that it is characterized in that discharging opening 12 equates with a number of spiral working face, blast pipe 4 fuses with boss 11, and the upper end of blast pipe is affixed with bolt and cover plate 1, and casing is enclosed within the outside of spiral working face 5.

4, device according to claim 1 and 2 is characterized in that the hoop cover 13 of two semicircle shapes is connected as a single entity boss 11 and vibrating motor seat 16, and hoop is applied mechanically bolt and connected fastening.

5, device according to claim 1 and 2 is characterized in that casing is to be made of overcoat 7 and interior cover 9, fills polyurethane foam plastic or asbestos or glass fibre thermal insulation material 8 between the inside and outside cover.

6, device according to claim 1 and 2, the middle footpath lead angle that it is characterized in that the spiral working face is 7 ° to 20 °, best angle is 9 ° to 13 °.

7, device according to claim 4 is characterized in that being equipped with on the symmetric position between vibrating motor seat 16 and the support 15 4 amplitude limit rods 14 that are made of rubber sleeve and elastic steel bar.