CN2561568Y - Environment protective and energy saving wood drying apparatus indirectely heated by gas and equipped with fan on top - Google Patents

Abstract

The utility model provides an indirect heat environmental protection and energy-saving hot-air timber dying equipment of top fan furnace gas. The equipment consists of a combustion boiler, a dry kiln body and a furnace gas heater with double metal composite fins arranged inside the kiln, a dust remover, a humidity adjusting device, an aluminum alloy axial fan, etc. A kiln crown is designed in full arc typeunique structure, which greatly reduces air flow resistance. Compared with the prior art, the utility model has scientific kiln structure, high effective energy saving, environmental protection, good thermal and humidity treatment effect, small power consumption, good dry quality of timber, safety and reliability, convenient installation and maintenance, short drying period, large kiln capacity and low drying cost, thus having widely application and popularization.

Description

A kind of indirect furnace heating of machine against the wind environment-friendly and energy-efficient timber dryer

The utility model belongs to the drying equipment technical field of timber processing class, the existing hot blast of type against the wind timber dryer has following several types: first type is conventional steam lumber kiln, as shown in Figure 1, its technology, technology maturation, control system are perfect, advanced, and wood drying quality is good, and is most widely used, but need configuration boiler and relevant device, investment is big, and steam is the secondary energy, and drying cost is higher; Second type is the dehumidifying lumber kiln, as shown in Figure 2; For in, the low humidity drying, consumed power, equipment investment is big, arid cycle is long, drying cost is higher; The third type is exactly the indirect furnace heating lumber kiln, and two kinds of forms are arranged, and a kind of is heaterless heated-air drying kiln in the kiln, as shown in Figure 3, its shortcoming is to heat up slowly, and the kiln temperature is low, and the thermal efficiency is low, and heat waste is big, medium state is wayward, and wood drying quality is poor, and disaster hidden-trouble is arranged; Another kind is the heated-air drying kiln that is provided with heater in the kiln, and is shown in Fig. 4,5, a kind of before the thermal efficiency is higher than, but the combustion chamber is little, and it is insufficient to burn, and flue dust is big, the radiator heaviness, the ash disposal difficulty, the thermal efficiency can reduce gradually, installation, maintenance inconvenience, and smoke evacuation needs to use air-introduced machine, the furnace air flow resistance is big, power consumption is big, and the housing insulation is poor, and thermal losses is big.Influence wood drying quality.Drying cost increases.

The purpose of this utility model is to overcome above the deficiencies in the prior art part, a kind of kiln structure science is provided, the equipment thermal efficiency height, power consumption is few, wood drying quality is good, make, install, maintenance, control is convenient, easy operating, to be harmful to sanitary industrial wood waste (as very easily mouldy, blackout, smelly sawdust, bark, sanding powder light, wood shavings etc.) be the environment-friendly and energy-efficient heat heating hot blast lumber kiln between the machine furnace gas against the wind of fuel, small investment, drying cost is low, and is big to satisfy, medium-sized wood processing enterprise or the enterprise that specializes in drying of wood business use.

The utility model technical solution adds down:

The utility model hot blast timber dryer is made up of burning boiler, dry kiln body and radiator, dust arrester, humidity control device and the axial flow blower etc. be located in the kiln.Burning boiler is located at outside the kiln, forms (see figure 6) by body of heater, air preheating chamber, fire bars, fire door, ash handling equipment and furnace gas export etc., and spontaneous firing is effective, does not need the smoke evacuation of air blast and air-introduced machine; Dry kiln body top is a full arc shape structure unique design, and air flow resistance is little, saves 30% power consumption; Radiator is bimetallic composite fin formula or level and smooth tube heater, heat transfer coefficient height, thermal efficiency height, and in light weight, easy installation and maintenance, and heater is positioned at full arc shape kiln top/bottom part; Humidity control device is made up of atomizer, atomizing adjuster and water pump etc., and the damping treatment effect is good, between heating and blower fan; Axial flow blower is the direct-connected aluminium alloy blower fan of high temperature resistant high-temperature electric machine, and the efficient height is in light weight, and compact conformation is easy for installation, is positioned at arc middle part, kiln top, and the dry kiln structure as shown in Figure 7.

The course of work of the present utility model is such: after ignition of the boiler, air is supplied with the necessary oxygen of fuel combustion through fire bars (3) after preheating chamber (2) preheating, make fuel (5) fully burning in the combustion chamber, this combustion process is spontaneous firing, do not need air blast, the high-temperature furnace gas that fuel combustion produced furnace gas export (7) from the boiler top after ash handling equipment (6) dedusting flows out; High-temperature furnace gas is introduced into level and smooth formula heater from admission line, enter bimetallic composite fin formula high efficiency heater (10) again, furnace air is under the positive drive of efficient aluminium alloy axial flow blower (12), rise efficient along full arc shape kiln and flow through high efficiency heater fast, make it force heat radiation, high efficiency is passed to the kiln inner circulating air to heat, air themperature is raise rapidly, with heating and desiccated wood, the reversible quick forced circulation of air to be guaranteeing Wood rapid-drying and to improve the uniformity of dry back moisture content, and high-temperature furnace gas sharply reduces through temperature behind the high efficiency heater and becomes waste gas and discharge after dedusting or do not need air-introduced machine from smoke exhaust pipe; In timber drying, some dry humidity of media are on the low side to be needed damping to become to prevent that timber from deforming, ftractureing in the time of need carrying out hot wet process to timber, open humidity control device (13), after the water under high pressure process atomizer high atomisation, under the blower fan positive drive, vaporize rapidly to improve the humiture of medium through the heating of high efficiency heater with air stream, the dry run strictness is undertaken by drying schedule, guaranteed wood drying quality.This utility model boiler is spontaneous firing and smoke evacuation, the combustion thermal efficiency height, do not need air blast and air-introduced machine, it directly is thermophore with the furnace gas, adopt efficient bimetallic composite fin formula radiator and the direct-connected aluminium alloy air-foil fan of high-temperature electric machine, adopt the little full arc shape kiln roof construction of air flow resistance, whole dry run heat waste is little, power consumption is few, and unit installed capacity is 0.12-0.15KW/m only ³, fuel saving and electric energy, drying cost is low.

Now that the utility model Figure of description and marking explanation is as follows:

The conventional steam drying kiln of Fig. 1 cutaway view

1. kiln body 2. materials are piled 3. inlet and outlet roads, 4. axial flow blowers, 5. heaters, 6. steam spray pipes

Fig. 2 lumber kiln portion view that dehumidifies

1. dehumidifier 2. hot-airs flow out pipeline 3. inlet and outlet roads 4. axial flow blowers, 5. materials heap

6. kiln body

Heaterless hot blast lumber kiln cutaway view in Fig. 3 kiln

1. air blast 2. cooling air intakes 3. burner blocks 4. fire bars 5. chimneys 6. hot blasts

Inlet pipe 7. axial flow blowers 8. materials are piled 9. shower nozzles

Be provided with the hot blast lumber kiln cutaway view of heater in Fig. 4 kiln

Fig. 5 is the B-B cutaway view of Fig. 4

1. heating tube 2. air-introduced machines 3. shower nozzles 4. axial flow blowers 5. inlet and outlet roads 6. materials are piled

7. stove

Fig. 6 burning boiler cutaway view of the present utility model

Fig. 7 the utility model dry kiln cutaway view

1. body of heater 2. air preheat kilns 3. fire bars 4. fire doors 5. burning kilns 6. dust arresters

7. furnace gas export 8. kiln bodies 9. materials are piled 12. in 10. heaters, 11. inlet and outlet roads

Flow fan 13. atomizers 14. barge boards

Against the wind machine indirect furnace heating environment-friendly and energy-efficient hot blast timber dryer described in the utility model, being specially adapted to large and medium-sized wood processing enterprise uses, compared with prior art, have following outstanding advantages: 1. power consumption is few, only 0.12-0.15Kw/m ³ 2. heat utilization efficiency (is steamed up to 43.6% The vapour dry kiln is lower than 22.6%); Take the discarded bark of timber processing, sawdust, dust, wood shavings etc. as Fuel is beneficial to environmental protection and reduces drying cost; 4. installation, maintenance, easy to operate; 5. need not dispose Steam boiler, small investment; 6. wood drying quality is good, and drying cost is low.

Claims (2)

1. machine indirect furnace heating environment-friendly and energy-efficient hot blast timber dryer against the wind, by burning boiler, dry kiln body and be located at radiator in the kiln, dust arrester, humidity control device, axial flow blower etc. and form, it is characterized in that dry kiln kiln top is positioned at full arc shape kiln top/bottom part for full arc shape structural design, radiator, humidity control device, dust arrester, axial flow blower is positioned at the arc center of top, and the inlet and outlet road is located at kiln machine both sides against the wind.

2. environment-friendly and energy-efficient hot blast timber dryer according to claim 1, it is characterized in that burning boiler is made up of body of heater, air preheating chamber, fire bars, fire door, combustion chamber, dust arrester and furnace gas export etc., and be spontaneous firing and smoke evacuation, no air blast and air-introduced machine; Radiator is bimetallic composite fin formula or level and smooth tubular type furnace gas heater, also can be arranged on the blower fan both sides; Humidity control device is made up of atomizer, atomizing adjuster and water pump etc.; One group two in inlet and outlet road is established in every typhoon machine both sides.

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