CN2531928Y - Environment protection energy saving type hot blow heating timber drying equipment - Google Patents

Abstract

The utility model relates to a novel environmental-friendly energy-saving hot air heating wood drying equipment, which needs to solve the problems of the existing equipment which is heavy, inconvenient in installation, low in thermal efficiency and high in drying costs. A bimetallic highly efficient radiator and highly efficient aluminum alloy axial flow fans are adopted by the utility model; the arc structure design among the fans greatly reduces the air resistance and wood waste; natural gas with highly efficient combustion replaces the steam boiler. Compared with the prior art, the equipment requires less investment and has a scientific structure, which has the advantages of less power consumption, high efficiency, energy saving, environmental protection, long service life, easy installation and maintenance, good wood drying quality and low drying cost and can replace the existing steam wood drying kiln with a broad promotion and application prospect.

Description

A kind of environment-friendly energy-saving type hot blast heating timber dryer

The utility model belongs to the drying equipment technical field of timber processing class, existing indirect furnace heating terminal fan type hot blast heating timber dryer has two kinds: a kind ofly be located at outside the kiln for the combustion chamber, be burning boiler, be cyclone firing, complex structure, need air blast and air-introduced machine etc., power consumption is big; Another kind of for now building between the kiln inner blower outside the semi-underground or kiln with refractory brick the combustion chamber.The blower fan of the two is the triangular shaft flow fan, and is heavy, efficient is low, power consumption is many; Heater is water (coal gas) welded tube (2 " or 2.5 ") or to make diameter with roll of steel plate be 220～260 steel pipe, promptly is the smooth tubes radiator, and area of dissipation is little, and heat transfer coefficient is low, and is not only heavy, inconvenience is installed, and corrosion-resistant, and the life-span is short.

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 radiating efficiency height, the light and handy corrosion resistant of equipment, power consumption is few, wood drying quality is good, manufacturing, installation, maintenance, easy to operate, to be harmful to the environment-friendly and energy-efficient indirect furnace heating timber dryer that sanitary wood machining residues or natural gas are fuel, alternative existing steam timber dryer, small investment, drying cost are low, and the enterprise that can satisfy large and medium-sized wood processing enterprise or specialize in drying of wood business uses.

The utility model technical solution is as follows:

The utility model environment-friendly and energy-efficient hot blast heating timber dryer is by burning boiler, dry kiln body and be located at efficient bimetallic radiator, dust arrester in the kiln, compositions such as humidity control device, the efficient axial flow blower of aluminium alloy, intake and exhaust heat reclaim unit.Burning boiler is located at outside the kiln, and available refractory brick is now built, and also available refractory brick is now built in kiln semi-underground between machine; Waste log efficient burning boiler is made up of body of heater, air preheating chamber, fire bars, combustion chamber, dust arrester, make a fire mouth and furnace gas export etc.Spontaneous firing effective (not needing air blast) and natural draught system (not needing air-introduced machine), non-power consumption.The dry kiln type is the camber structural design between blower fan for end blower fan skew wall type, and air flow resistance is little, and power consumption is few.Radiator is bimetallic composite fin or level and smooth tubular type high-efficiency radiator, and area of dissipation is big, and the heat transfer coefficient height is corrosion-resistant, and light weight, easily installation and maintenance, and heater can be divided into two groups, can be arranged on the blower fan one or both sides.Humidity control device is made up of atomizer, self priming pump etc., and damping is effective.Axial flow blower is the direct-connected aluminium alloy blower fan of high temperature resistant damp-proof machine, compact conformation not only, and efficient height, and light weight, easy for installation, power saving.

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 after the preheating chamber preheating, fuel is fully burnt in the combustion chamber, this combustion process is spontaneous firing (not needing the air blast oxygen supply), the high-temperature furnace gas that fuel combustion produced enters and send heat pipe (auxiliary heater) and bimetallic high efficiency heater (primary heater) in the kiln through outlet and air inlet pipe, furnace air is under the positive drive of efficient aluminium alloy axial flow blower, efficiently (arcuate structure design, air drag is little) flow through 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 circulation of air is to accelerate drying of wood speed, improve uniform drying degree and the moisture content deviation that reduces on the thickness, improve wood drying quality.The high-temperature furnace gas that comes out from boiler sharply is reduced to waste gas from the up smoke exhaust pipe discharge of the monotubular directly over the high efficiency heater (not needing air-introduced machine) through temperature behind the radiator.In timber drying, for guaranteeing wood drying quality, in the time of need carrying out hot wet process or damping to timber, open humidity control device, water under high pressure through mist than device high atomisation after through high efficiency heater rapidly vaporization to improve humidity of media, the timber drying strictness is carried out by drying schedule, guaranteed wood drying quality.

This spontaneous firing of utility model boiler and smoke evacuation are thermophore with the furnace gas directly, adopt the direct-connected aluminium alloy axial flow blower of efficient bimetallic radiator and high temperature resistant damp-proof machine, adopt the arcuate structure design between blower fan, and air drag is little.Timber drying heat utilization height, power consumption is little, and (unit installed capacity is 0.1～0.12KW/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:

Fig. 1, utility model burning boiler cut open existing figure

1. make a fire mouthful 5. furnace gas exports of 3. pairs of inner bags 4. of boiler foundation 2. air preheating chambers

6. dust arrester 7. combustion chambers 8. bodies of heater, 9. fire bars Fig. 2, the utility model dry kiln structure cutaway view

1, aluminium alloy blower fan 2, humidity control device 3, burning boiler 4, furnace gas inlet pipe

5, auxiliary heater 6, bimetallic high efficiency heater 7, material heap 8, kiln body

9, thermometric, moisture apparatus

Environment-friendly and energy-efficient hot blast described in the utility model heats timber dryer compared with prior art, and have following outstanding advantage: 1, power consumption is few, and installed capacity is 0.1～0.12kw/m only ³Heat utilization efficiency is up to 44.6% (the steam drying kiln is lower than 22.6%); 3, be fuel with natural gas or timber processing waste such as bark, butt, sawdust, dust, wood shavings etc., be beneficial to environmental protection and reduce drying cost; 4, installation, maintenance, easy to operate; 5, need not steam boiler, small investment; 6, wood drying quality is good, and drying cost is low.The alternative existing steam drying equipment of this utility model equipment is applicable to that large and medium-sized wood processing enterprise and the company that specializes in drying of wood business use.

Claims (3)

1. an environment-friendly energy-saving type hot blast heats timber dryer, by efficient burning boiler, dry kiln body such as waste log, natural gas and be located at high-efficiency radiator in the kiln, dust arrester, humidity control device, efficient aluminium alloy axial flow blower, intake and exhaust heat reclaim unit etc. and form, it is characterized in that structure is an end blower fan skew wall type, design for arcuate structure between blower fan, humidity control device is between axial flow blower and radiator, and smoke exhaust pipe is for being positioned at monotubular ascending tube directly over the poly-petticoat pipe in radiator top.

2. environment-friendly and energy-efficient hot blast heating timber dryer according to claim 1, it is characterized in that the waste log high efficiency combustion stove is an ellipse garden shape furnace binding, the natural gas high efficiency combustion stove is circular Proper Design, is spontaneous firing and smoke evacuation (need not air blast and air-introduced machine); Radiator is bimetallic composite fin formula or smooth tubes (can be stainless steel tube, hot dip pipe, water gas pipe, seamless steel pipe) heater, can be one and forms two groups (can be positioned at blower fan both sides or a side); Humidity control device is made up of atomizer, self priming pump etc.

3. environment-friendly and energy-efficient hot blast heating timber dryer according to claim 1, it is characterized in that combustion furnace is positioned at outside the dry kiln body, available refractory brick is now built and is formed, also available fire-resistant brick semi-underground between the kiln inner blower, efficient bimetallic radiator is positioned at directly over it, and smoke exhaust pipe still is positioned at the simple ascending tube of list directly over the poly-petticoat pipe.