CN2295974Y - Combined vibration fluidbed drier - Google Patents

Abstract

The utility model relates to a composite vibration fluid bed drier, which is suitable for drying powder and granular materials in chemical industries, food industries, feed industries, medicine industries, etc. The utility model is composed of a vibrating body, an upper cover body, a vibration isolation spring and a bottom frame. A feed inlet, an elastic material distributor, a feed outlet, a wind shielding device, a cold and heat wind chamber and a hole plate working surface are arranged on the vibrating body. A vapor net path arranged in a net type, a manhole and a wind exhaust outlet are arranged on the upper cover body. The utility model is characterized in that the hole plate working surface is designed according to the property of a dried material and data obtained after experiments. The hole plate working surface is combined by a parabolic segment and a straight segment. The through hole rate of the hole plate working surface of the drier is decreased along the direction of materials and is between 35% and 18%. Therefore, the utility model can obtain the optimum drying effect of materials.

Description

The complex vibration fluid bed dryer

A kind of complex vibration fluid bed dryer is the drying equipment that is used for powdery, granular material.Be specially adapted to the drying of big water content material, be applicable to the drying of the solid material of industries such as chemical industry, food, feed, fertilizer, medicine.The horizontal vibration fluid bed dryer that past produces and invents; The cartridge type Vibratingfluidbeddrier; Multi-section combined Vibratingfluidbeddrier; The energy-saving vibration fluid bed dryer is equal to the drier structure and all exists same weakness.Be that the horizontally disposed or constant inclination angle of working face is arranged, the material in this drier is arbitrary instantaneous dry run, no matter is dry or moist, all is subjected to the horizontal component under identical exciting force and the material gravity effect.In other words, material is in each stage of dry run a kind of stress that exists together in this drier, and in general, most solid material surface viscosities are directly proportional with its water content.Cause frictional force to change in the initial stage and the latter stage of vibratory liquefaction drying because of change of moisture content (its surface viscosity changes) with a kind of material, so the movement velocity of material also change thereupon.For example: * * the horizontal vibration fluid bed dryer that uses in the saltern, when xeraphium desalinization of soil by flooding or leaching operation, cause a large amount of buildups in one to two meter the scope at the charge door place, per tour is shut down and is sent someone emitting high temperature to advance machine half an hour to clear up with pick.Cause very big inconvenience for dry production.This is because this machine working face is horizontally disposed.(being working face inclination alpha=0 degree).Just section (near charge door place) is often because of the material moisture height in drying, and surface viscosity causes the material wriggling greatly, thickeies gradually even causes dead bed.Therefore, material is gone into the machine maximum water holding capacity and is restricted.In like manner constant inclination angle drying machine equally also exists the uneven problem of material speed.

In view of the foregoing, the utility model provides a kind of drying that is applicable to big water content material, and material moves at the uniform velocity in the dry run, and the bed of material is even; Each dry section is crossed the wind resistance basically identical, can obtain the complex vibration fluid bed dryer of high-quality drying effect.

Solution of the present utility model realizes by following content, it comprises the body that shakes of prior art, upper outlet body 9,17 4 major parts of isolation spring 16 and underframe are formed, shaking, to be furnished with the vertical section on the body be semi-parabolic shape and horizontal wire orifice plate working face 13,23, be fixed on the cell body, forming the cross section with the cell body both sides is the work chute of Qian type.The open-work rate of work orifice plate face is successively decreased along the materials flow direction.Two are equipped with the cell body both sides together by dress angular oscillation motor 8 in the groove center of gravity of shaking place, the body running basifacial both sides that shake are furnished with hot blast import 15a, b, c mouth and cold wind import 21d mouth successively along the materials flow direction, be furnished with dividing plate and elasticity bin gate 19 between cold and hot wind chamber, the groove head end that shakes is furnished with charge door 1, be furnished with elastical cloth glassware 2 on it, (distributing device is a rectangle, arranges continuous triangular ridges shape emboss pit from the feed point radioactive ray.Add stockline and charge door is hinged, go out on the stockline to stud with rubber slab.And by compressing spring-loaded on the body that shakes).The both sides that shake on the groove are equipped with several and are spied on peephole 12.The groove tail end is provided with discharging opening 24 and wind sheltering device 25.Groove tail bottom is provided with tailing row mouth 22.Be furnished with exhaust outlet 7A, B, C mouth on the upper outlet body, be provided with the steam channel of manhole 6 air intakes 3 and steam drain 11 and netted layout.Cover body is supported on the underframe 17.Cover body connects 5 by nylon cloth or other flexible material between the body with shaking.

Drying machine principle of the present utility model is: wet stock enters the cell body parabola active section that shakes by the charge door place equably after elastical cloth glassware vibration sub-material, jumping on curve orifice plate face, along with the drying of material, material synthesizes the working face that flows through different open-work rates under the promotion at exciting force and different horizontal components (being produced by material gravity).Siccative is discharged by discharging opening through the wind sheltering device.Meanwhile, hot blast enters the body that shakes by air inlet a, b, c, and cold wind enters the body that shakes by the d mouth.Penetrating on orifice plate and the orifice plate moving material is discharged by top A, B, C exhaust outlet.This machine leading portion is that dryer section, back segment are cooling section.The air feed system of this machine and tail wind treatment system then are equipped with according to the technological requirement of the material that is dried.

The key problem in technology that the utility model solves is: 1, the longitudinal profile of orifice plate working face is to be composited by parabola working face and horizontal operation face.The method to set up of parabola working face is as follows.At first origin of coordinate is located at the feeding point (see figure 1).X-direction is decided to be the direction of motion of material.Along X-direction, the angle of the tangent line of any point and the horizontal plane variation of successively decreasing on the parabolic segment.(in other words this section be by the numerous inclination angle of successively decreasing little decide the angle working face be connected form).The suffered horizontal component of moving material is different on this section any point.This power decays along X-direction.In other words, material moisture content is more little, and then the suffered horizontal component of material is more little.To any material, all should select A point coordinates (seeing chart) exactly through experiment.Promptly selected x ' y ' value.After determining, this value can obtain needed parabola.2, along X-direction, the open-work rate of working face orifice plate is successively decreased.In 35%～18% zone, select.Its reason is when uniform thickness bed of material average rate flows drying, because humidity difference, then the mistake wind resistance difference of the bed of material.Total wind resistance (Δ P) of crossing is synthesized by punishment in advance layer resistance and the stack of via hole plate resistance power.It is Δ P=Δ P material+Δ P hole.If obtain balanced mistake wind resistance.Then need Δ P hole to change.Therefore, need the open-work rate of orifice plate to successively decrease.3, upper outlet body adopts the steam channel of netted layout.Make the heating of cover body inwall.Can improve the complete machine drying efficiency on the one hand, can avoid the cover body inwall to glue the wall caking phenomenon on the other hand effectively.Improved by the quality of dry material product.

Complex vibration fluid bed dryer in sum compared with prior art possesses following advantage and effect.

1, the orifice plate working face adopts parabolic segment and straight horizontal line segment composite construction, curve can be according to the different material design supply of material, and each stage can reach nearly uniform speed motion state in dry materials (flowing) process.Can accept dry big water content and middle viscous material.Enlarged the scope of application.

2, the open-work rate of orifice plate is successively decreased along the materials flow direction, and dry each section wind resistance can be avoided the hot blast short circuit effectively near consistent.Realize highly effective drying.

3, go up cover heating inwall, can improve overall efficiency more than 10%, improved the quality of dry products again.

4, be provided with the elastical cloth glassware, need be equipped with the vibration distribution device.

5, simple in structure, manufacturing and easy to maintenance.

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

Fig. 2 is the parabola working face curve of the utility model material.

1, charge door, 2, the elastical cloth glassware, 3, air intake, 4, netted steam way, 5, soft connection, 6, manhole, 7, exhaust outlet (A, B, C) 8, vibrating motor, 9, upper outlet body, 10, the upper outlet body support, 11, steam drain, 12, spy on peephole, 13, the parabolic segment working face, 14, body shakes, 15, hot blast import (a, b, c), 16, isolation spring, 17, underframe, 18, the hot blast chamber, 19, the elasticity bin gate, 20, the cold wind chamber, 21, cold air inlet (d), 22, tailing row mouth, 23, the horizontal segment working face, 24, discharging opening, 25, the wind sheltering device, 26, insulating layer.

As shown in Figure 2:

Example: according to experiment to certain material, selected X '=3000mm Y '=500mm parabola y ²=2px becomes On the x axle, equidistantly get each point and get (table one)

x	0	300	600	900	1200	1500	1800	2100	2400	2700	3000
												y	0	-158	-224	-274	-316	-353	-387	-418	-447	-474	-500

Get the each point position according to the table mapping, connect the parabolical working face curve that each point promptly obtains being applicable to certain material.

Claims (3)

1, a kind of complex vibration fluid bed dryer comprises the body that shakes, upper outlet body, isolation spring, underframe, motor; The body that shakes is provided with charge door, discharging opening, cold air chamber, hot blast chamber, steam channel, manhole, steam drain and air intake that the net formula that orifice plate working face, upper outlet body are provided with is arranged; The vertical section that it is characterized in that the orifice plate working face is to be made of semi-parabolic section and straight horizontal line segment, and the open-work rate of orifice plate working face is successively decreased along the material movement direction; Be provided with the elastical cloth glassware at the charge door place.

2, drying machine according to claim 1, the open-work rate that it is characterized in that the orifice plate working face is between 35%～18%.

3, by the described drying machine of claim 1, it is characterized in that the elastical cloth glassware is rectangle, arranges continuous triangular ridges shape emboss pit from the feed point radioactive ray, go out to stud with rubber slab on the stockline, add stockline and charge door is hinged.