CN2040236U - Circulation-type annular hot-blast cocoon drier - Google Patents

Abstract

The utility model discloses a circulation-type hot-blast cocoon drier, comprising an annular tunnel dry chamber, cocoon vehicle systems, a combined heat exchanger and pipe network systems. The dry chamber is divided into four temperature zones comprising preheating, high temperature, moderate temperature and low temperature, and in-out cocoon segments by a movable insulating board. The required thermal hot blast is conveyed to each temperature zone by the heat exchanger through pipe network systems. The annular cocoon vehicle systems can run intermittently or continuously on the inner trackway of the dry chamber, so the idle running of the requisite furnace outer trackway and the cocoon vehicle which are used for prior cocoon drying is omitted. The utility model has the advantages of land saving, low energy consumption, convenient operation and good quality of cocoon drying.

Description

Circulation-type annular hot-blast cocoon drier

The invention belongs to hot blast do drying medium, the circular flow of cocoon car annular (closed loop) dry materials stove, it is specially adapted to dry silk cocoon and other little agricultural byproducts of volume.

The silkworm cocoon drying equipment that generally uses mainly contains three types at present.The one, square body coal kitchen range; The 2nd, microscler pusher cocoon drying kitchen range; The 3rd, cocoon drier.Wherein the thermal source of square body coal kitchen range generally all in kitchen range, utilize its width of cloth to penetrate the dry silk cocoon of heat and natural airflow.The cocoon car is a transfixion after advancing kitchen range in dry run, goes out kitchen range again after baking dried cocoon or half-dried cocoon, as river 82 type square kitchen ranges etc.Cocoon drying process requires the last stage to need a large amount of heat energy, and at after-stage, only needs small amount of thermal energy when particularly facing cocoon, and the front and back great disparity is bigger, i.e. " high back is low before the temperature, humidity is low early and high after ".This type of kitchen range is because cocoon car intermittence is advanced kitchen range, and so be difficult to guarantee normal cocoon drying process, ubiquity in the time of will heating up and risen not on, and need can fall when lowering the temperature, so cocoon drying is second-rate, and energy consumption height, labour intensity are big.Though the available heated-air drying silk cocoon of cocoon drier, cocoon drying quality are also better, productivity ratio is lower, cost is high, operating technology requires also highly, and silk cocoon will stir several times in dry run, and maintenance is inconvenient in addition, therefore is difficult at present promote the use of." big and three smooth cocoon driers just belong to this kind equipment in Japan.And grow (tunnel) though the cost of the pusher cocoon drying kitchen range of shape than the cocoon drier facility, also easy to operate owing to after the cocoon car advances from an end of stove, send from the other end through half-dried or absolutely dry cocoon.This cocoon drying kitchen range is because employing is the dry silk cocoon of trunk with the advection heat, in order to satisfy the requirement of cocoon drying technology, the stroke of cocoon car in kitchen range must have certain-length, heat exchanger can only be sent into the hot blast of same temperature in addition, therefore also need utilize its length to adjust the interior thermograde of kitchen range, form approximate high, medium and low temperature and give hot arc.Therefore, the heat loss of this type of cocoon drying kitchen range is also bigger; Also need lay track because the cocoon car changes in the carrying of kitchen range outer space, therefore cause floor space big, into and out of drawbacks such as cocoon dispersions.And at present cocoon drier and the pusher hot air cocoon drying kitchen range of long tunnel still are in test and enlarge pilot phase.

The objective of the invention is to propose meter a kind of annular (closed loop) cocoon drying stove, this type of furnace technological requirement by cocoon drying in furnace chamber (hothouse) is divided into four humidity provinces--give heat, high temperature, middle temperature, low-temperature space and into and out of the cocoon section, utilize Thermal insulation door frame to separate between each section and utilize thermal insulation board sealing, to stop the hot air convection between each humidity province, utilize combined heat exchanger to carry temperature required hot blast to each humidity province respectively simultaneously; The linking mutually of cocoon car head and the tail, shuttling movement, both saved the stroke of empty cocoon car stove outside, and can will advance cocoon and go out cocoon and combine in a place again.Thereby both satisfied technological requirement, assurance cocoon drying quality, the raising thermal efficiency of cocoon drying " high back is low before the temperature, and humidity is low early and high after ", reduced the floor space of equipment again, be beneficial to control and management.The dried that also can be used for other material such as grain, Chinese medicine etc. simultaneously realizes purposes such as comprehensive utilization.

Enforcement of the present invention is to utilize masonry to make the body of heater 1 of annular drying oven, body of heater (hothouse) inwall adds and is coated with insulation material to reduce heat loss, furnace roof is circular arc and a plurality of weep holes 2 that evenly distribute, adorn an orifice-plate type ceiling 3 between furnace roof and the cocoon vehicle frame 6, directly discharge through weep hole 2 with after stoping dry hot blast to be sent by warm-air pipe 9.The cocoon producing section S that advances of body of heater adorns folding door 10, in order to make things convenient for the loading, unloading silk cocoon.Heat exchanger 4 is installed on the outdoor middle part of ring drying, makes compact equipment installation, so as to shorten hot air duct length, be beneficial to insulation, save floor occupying area simultaneously.Operating personnel enter this workspace by underpass M and operate on it and control, and cold air also can enter heat exchanger by this passage.Heat exchanger 4 adopts the combined heat exchanger with major and minor interchanger to improve the thermal efficiency and the hot blast that different temperatures is provided.Warm-air pipe 9 adopts the arrangement that combines anyhow, vertical tube is installed on cocoon car both sides in the drying oven according to certain rules respectively, all have plurality of air on each tube wall, two blow valves 5 also are housed simultaneously controlling the air output of each airduct, thereby reach the purpose of regulating the hothouse room temperature.Cocoon vehicle frame 6 be contained in the concentric cocoon chassis 7 in ring drying chamber on, some wheels 8 are equipped with in the bottom on chassis 7, the chassis can motion on the apron track 14 of hothouse bottom by wheel, and cocoon vehicle frame 6 is sent into different humidity provinces on request successively.Track 14 is annular (closed loop) single track.Between each humidity province by be loaded on door shape metal partion (metp) 11 and Thermal insulation door frame 12 on the cocoon chassis mutual engage form thermal insulation layer, to stop the thermal convection current between each humidity province, the edge of dividing plate and Thermal insulation door frame all is packed with rubber skin or high pressure sheet asbestos, make it can guarantee its sealing, again the motion of not overslaugh cocoon car.Fig. 3, be the partial view of I among Fig. 1,13 is cocoon lattice, the 14th among the figure, apron track, the 15th, track pressing plate.In order to guarantee the stable operation of cocoon car, the wheel of each wheel is along intersecting the both sides that place light rail respectively.The operation of cocoon car both can have been adopted artificial propelling, also can adopt variable speed electric motors, particularly to drive.

The present invention is owing to adopt annular body of heater, saved the cocoon car enter the stokehold and come out of the stove after no-load running, this had not only guaranteed that cocoon drying process required necessary cocoon garage journey, but also saved floor space, and the airtight degree of hothouse is also better.Compare with the pusher cocoon drying kitchen range of the rectangle of same specification, save floor occupying area 30～40%; Owing to adopt combined heat exchanger not only to improve the efficient of heat exchanger, can send temperature, fully satisfy the requirement of cocoon drying process to the hothouse segmentation, also easy for installation, be easy to eliminate crock etc. than integral exchanger.Suitable rate raising 4%, reelability percentage raising 3%, the joint coal-fired 20% done of the existing cocoon drying kitchen range of cocoon drying mass ratio; Compare output with the cocoon drier of day cocoon drying 100 loads and improve 47%, cost reduces more than 50%.Therefore the present invention not only has thermal efficiency height, little, the measured characteristics of cocoon drying matter of energy consumption, but also has advantages such as rational in infrastructure, that running is reliable, labour intensity is low and can fully utilize.

Embodiment

Body of heater of the present utility model (hothouse) utilizes common brick to be built into, the thick 0.24m in furnace wall, the high 3.40m of body of heater, and the top, two side is respectively watered one and high is the collar tie beam of 0.20m, vault head again on the collar tie beam; Radius of circle r is that 1.7m, exradius R are 4.0m in the body of heater; Body of heater (hothouse) inwall utilizes waterglass mix expanded perlite thick in heat-insulation layer all over smearing 3Cm.Thermal insulation door frame 12 high 2.32m between each humidity province, wide 1.10m, thick 0.24m.The cocoon car is at the long 17.90m of indoor Operation Centre track; Cocoon chassis 7 is made of seven fan-shaped metallic plates respectively, a closed-loop shaped disk, and each fan-shaped metallic plate constitutes a parking stall, (for weight and the economical with materials that alleviates the chassis also can prescind a part with each fan-shaped metallic plate middle part), two silk cocoon framves 6 are installed on the plate, the wide 1.05m in chassis, thick 6Cm, all install one between per two plates and thickly be the metallic insulation plate 11 of 0.75mm, its frame adopts 3 * 30 * 30mm angle steel, the edge of thermal insulation board 11 and Thermal insulation door frame 12 all is packed with high pressure asbestos soft board, to stop the thermal convection current between each warm area; The wheel of wheel 8 its adjacent two-wheeleds that install down on the chassis is along the both sides that place track respectively, to guarantee the stable operation of cocoon car; Track 14 is selected light rail, total length 17.90m for use No. 8.Cocoon vehicle frame 6 is welded by 3 * 30 * 30mm angle steel, and long 1.06m, high 2.25m, wide 0.91m adorn 17 netted cocoon lattice 13 on each cocoon vehicle frame, and the frame of each cocoon lattice is made with thick bamboo clappers, adopts woven wire at the bottom of the lattice.Heat exchanger 4 is selected the combined heat exchanger with main switch and secondary interchanger for use, and its hot-air output quantity is 2600m ³/ hour, temperature is 180～200 ℃; The blower fan system installed capacity is 9.6KW, and wherein main air blower a is 7.0KW, total head 318mmH ₂O, flow 2764m ³/ hour; Secondary blower fan b is 1,5KW, total head 212mmH ₂O, flow 1076m ³/ hour; Air-introduced machine C is 1.1KW, flow 966m ³/ hour.The warm-air pipe 9 of heating network system, its horizontal airduct (air main) diameter are φ 28mm, adopt thickly to roll, weld for the iron plate of 3mm; Discharge pipe is a conical pipe, equidistantly be arranged vertically cocoon car both sides in each warm area, totally 24, every high 2.31m, diameter at butt end are φ 20Cm, and top diameter is φ 15Cm, adopt thickly to make for the iron sheet of 1.5mm, all being drilled with 100 hot blasts on each tube wall portals, wherein 15 diameters are φ 10mm, and 85 diameters are 8mm, and the middle part of every vertical tube also is separately installed with two butterfly blow valves 5 and adjusts the output quantity of hot blast in each humidity province to regulate the temperature of each humidity province.Ceiling 3 in the hothouse adopts the bamboo offset plate, holes on the plate, and the aperture is φ 15mm, and pitch-row is 50mm.The high 2m of work tunnel M, wide 1.8m.

The present invention be mainly used in dry silk cocoon, also can be used for dry other agricultural byproducts, as Chinese medicine, peanut, hot pepper, sweet potato sheet etc., be example with dry silk cocoon; At first give the heated drying chamber before the drying; When each humidity province reaches t respectively ₁110 ℃～120 ℃, t ₂120 ℃～125 ℃ t ₃120 ℃～130 ℃, t ₄: in the time of 115～120 ℃, send bright cocoon to hothouse again.During operate as normal, each warm area temperature is respectively when duty is full load: give hot arc t ₁: 95 ℃～100 ℃, high temperature section t ₂: 115 ℃～120 ℃, middle-temperature section t ₃: 110～115 ℃, low-temperature zone t ₄: 70～95 ℃, the production cycle of (be 90 ℃～95 ℃ during wherein half-dried technology, be 70 ℃～75 ℃ during absolutely dry technology) half-dried cocoon is 2:30～3 hour, the production cycle of absolutely dry cocoon is 6～6:30 hour, per 30 minutes of partial desiccation technology intermittently into and out of cocoon once, be cocoon chassis 7 parking stall of (in the counterclockwise direction) propelling (present embodiment is with manually advancing the cocoon car) forward, advance the cocoon amount is 153Kg～160Kg at every turn, and white drying technology per hour passes in and out cocoon once.In dry run, half-dried technology 6 weep hole standard-sized sheets at full capacity the time; Absolutely dry technology at full capacity the time 2 the weep hole standard-sized sheets in high-temperature region, two weep holes of middle warm area respectively open 1/2, low temperature chamber closes weep hole, give the hot cell opens 1/2.The productivity ratio of present embodiment (bright cocoon--half-dried) 7500Kg～8000Kg/24 hour, comprehensive energy consumption: 0.1415Kg(marks coal)/every Kg.

Claims (5)

1, a kind of circulating hot blast cocoon drying stove, it is by hothouse, heat exchanger, the heating tube system, formations such as cocoon car and conveying track, it is characterized in that hothouse is the annular tunnel chamber for drying, this hothouse can be divided into by thermal insulation board and give heat, high temperature, middle temperature, four humidity provinces of low temperature and advancing, cocoon producing section, thermal insulation board is loaded on the cocoon chassis, the chassis of cocoon car is an annular metal sheet, the cocoon frame is installed on the chassis, whole cocoon car can be done intermittence or continuity circular flow on the circuit orbit of hothouse bottom, the heat exchanger that is adopted then send the combined heat exchanger of temperature for sectional, and by the use that links together of heating tube system and hothouse.

2, by the described cocoon drying stove of claim 1, so-called annular tunnel type hothouse is characterized in that hothouse is to be built up by masonry, all build Thermal insulation door frame and the top of each warm area all has the weep hole of adjustable open degree between inner each warm area of hothouse and into and out of the cocoon mouth, also be provided with the orifice-plate type ceiling between weep hole and the cocoon vehicle frame.

3, by the described cocoon drying stove of claim 1, so-called cocoon chassis is that annular metal sheet is characterized in that this annular metal sheet is a closed-loop shaped rosette that is made of seven independently fan-shaped metallic plates, and dress cocoon frame is meant two cocoon vehicle frames are installed on each fan-shaped chassis on the so-called chassis.

4, by the described cocoon drying stove of claim 1, what is called heating tube system is characterized in that its air main (laterally airduct) diameter is φ 28mm, each discharge pipe is the taper vertical tube and vertically is uniformly distributed in cocoon car both sides in the hothouse, its diameter at butt end is that φ 20Cm, top diameter are φ 15Cm, all have some wind hole on each tube wall, the input quantity of two air-supply valves with the hot dry wind of regulating each humidity province respectively is equipped with at the middle part of tube wall.

5, by the described cocoon drying stove of claim 1, so-called circuit orbit is characterized in that this track is the closed loop single track, and the wheel of cocoon car all has the wheel edge, and adjacent two vehicle wheel place the both sides of track along intersection during installation, to guarantee the stable operation of cocoon car.

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