CN2135756Y

CN2135756Y - Simple indirect hot air dryer

Info

Publication number: CN2135756Y
Application number: CN 92233580
Authority: CN
Inventors: 上官廉
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-09-12
Filing date: 1992-09-12
Publication date: 1993-06-09
Anticipated expiration: 2002-09-12

Abstract

The utility model relates to a simple indirect hot air dryer, mainly comprising a furnace range composed of a casing 1, a combustion chamber 4, a furnace chamber 5, a chimney 6, a spiral air channel 14, etc. and a drying room composed of a main air tube 9, a horizontal tube, etc. Across a baking room 8. The spiral air channel does not need maintenance, and the airflow has reasonable heating. The drying room is uniformly distributed with air outlet holes 18 to provide the uniform temperature rising for the drying room. The material to be dried does not to be turned. In addition, a water spray pipe 21 is arranged, and the sprayed water is directly boiled into the steam to increase the humidity in the drying room. The materials such as the timbers, etc. Are easy to be dried without deformation. The whole equipment is easy to make, the temperature is easy to control, and the drying effect is obvious.

Description

Simple indirect hot air dryer

The utility model relates to drying equipment, is the easy device of the indirect hot blast heat drying of a kind of usefulness article.

The drying operation on the spot of agriculture and forestry product (paddy, mushroom, timber etc.) except that adopting the solar energy air dry, utilizes local rich fuel (rice husk, wood chip, crop cane or coal etc.) directly to add the dry agriculture and forestry product of hot-air usually.Directly add entrained ash of hot-air or carcinogenic substance pollution agriculture and forestry product for fear of fuel, promoted a kind of indirect type hot-air drying device, it mainly is made up of cooking stove and drying shed two parts, tracheae row to be heated is arranged in the burner hearth of cooking stove, by air blast the indirect heated air drum in the tracheae row is advanced drying shed, make the product on the shelf in the drying shed be subjected to heated drying, but the tracheae row of this drying device in burner hearth safeguard, change comparatively difficulty; And air-flow skewness when the hot-air drum advances drying shed causes the interior temperature of drying shed irregular, need often stir product to be dried, not only spends the labour, and often causes quality to descend.

Design objective of the present utility model is at above-mentioned the deficiencies in the prior art, develops a kind of heated airflow passage that must not safeguard, and hot gas duct is directly put in the drying shed, and the hot-blast outlet of some even layouts is set, and the drying shed temperature is evenly distributed.

Technology contents of the present utility model mainly is: a kind of simple and easy indirect hot-air drying device is mainly by burner hearth, the combustion chamber, grate, housing, chimney, air blast and be subjected to cooking stove that hot-flow flue etc. forms and by discharge duct, the material frame, the drying shed that drying room and air leaving cover etc. are formed constitutes, characteristics are that housing is the chuck of inside and outside two layers of formation, be fixed with the spirality partition in the chuck, space in the chuck is separated into the spirality ventilating duct, in the chuck upper end air inlet is arranged, with the inside air blast of air blast, the chuck lower end has air outlet and air main to link, the vertical drying room of striding of air main, and horizontal or obliquely stretch out some transverse tubes different in size at air main, each is managed the top and is provided with the hole of giving vent to anger.

Parallel being provided with can be by the water pipe of the downward water spray of micropore directly over technology contents also was included in air main.Be furnished with some apertures of giving vent to anger on the transverse tube.Be fixed with the thrust of being convenient to fixedly smear fire clay on the burning chamber shell inwall.

Positive effect of the present utility model is: the spirality ventilating duct is located in the chuck of housing, need not protect dimension, and ventilating duct has sufficient length, makes air heat exchange abundant, because more the case temperature near the combustion chamber is higher, air is heated heats up and more become reasonable again; The hole of giving vent to anger of transverse tube different in size comparatively is evenly distributed in drying room everywhere, and drying room heats up evenly, generally need not stir material; Fixed, difficult drop-off by the fire clay of smearing because of thrust being arranged, making for the inner walls at place, combustion chamber; Set up the water pipe that can spray water downwards, the globule directly falls and vaporizes to air main, makes drying room increase temperature, and is favourable to materials such as desiccated woods.

Below in conjunction with accompanying drawing in detail embodiment is described in detail.

Fig. 1 is the drying device schematic diagram of combusting rice hull.

Fig. 2 is an A-A cross-sectional schematic among Fig. 1.

Fig. 3 is a B-B section enlarged diagram among Fig. 2.

Drying device mainly divides cooking stove and drying shed two parts, housing 1, grate 3, combustion chamber 4, burner hearth 5, chimney 6, charge door 7 that cooking stove mainly forms chuck 2 by two layers of inside and outside walls etc. formed, and hothouse mainly is made up of drying room 8, air main 9, transverse tube 10, material frame 11 and air leaving cover 12 etc.The chuck of housing is fixed with spirality partition 13 for 2 li, space in the chuck 2 is separated into spirality air channel 14, chuck 2 upper ends have air inlet 15 and air blast 16 to link, chuck 2 lower ends have air outlet 17 and air main 9 to link, the air main 9 vertical drying rooms 8 of striding, and horizontal or obliquely stretch out some transverse tubes different in size 10 at air main 9, each is managed 9,10 top and is provided with hole 18.

The rice husk that burns on grate 3 during work produces heat, by air in the housing 1 inwall heating jacket 2, because air blast 16 air blast in chuck 2, spirality air channel 14 motions of cool ambient air by 2 li of the chucks intensification of being heated gradually, can reach 300 °～400 ℃ to air outlet 17 place's temperature, and then flow to air main 9, transverse tube 10 in succession, and flow out from the give vent to anger hole 18 of 9,10 tops of respectively managing that is distributed in drying room 8, whole drying room thermally equivalent temperature can reach 40 °～120 ℃, make the product drying on the material frame 11, waste gas is arranged to the external world from air leaving cover 12.

Combustion chamber 4 is that fuel flame district temperature is the highest, for preventing this piece housing inwall premature oxidation scaling loss, can fix or weld several projections thing 19 in inner walls, the shape of thrust 19 can be shaft-like, strip or sheet, is convenient to be fixedly connected spread upon fire clay on the inwall.

For being heated in the drying room 8 more become evenly, can on each transverse tube 10, arrange some apertures 20 of giving vent to anger.

Facts have proved when materials such as desiccated wood, contain the little and easy drying of hot air seasoning timber distortion of uniform temperature.Then can directly over air main 9, parallel being provided with to pass through the micropore water pipe 21 of water spray downwards, Open valve supplies water to water pipe 21 as required, directly sprays water on air main 9, because air main 9 temperature are higher, and making water spray be vaporizated into heat steam, whole drying room promptly is full of the hot gas that contains certain humidity.

The temperature of drying room temperature and air main 9 can detect by thermometer, and temperature is crossed when low or too high, and the way of available increase and decrease fuel solves, and also can adjustable cold wind mouth be set at air main 9 ends that link with cooking stove air outlet 17 and solve.

Cooking stove in the utility model only need carry out routine and improve, and also can make fuel with wood chip, bavin, coal etc.

Claims

1, simple and easy indirect hot-air drying device is mainly by housing 1, grate 3, combustion chamber 4, burner hearth 5, chimney 6, charge door 7, air blast 16 and be subjected to cooking stove that hot-flow flue etc. forms and by discharge duct, drying room 8, the drying shed that material frame 11 and air leaving cover 12 etc. are formed constitutes, it is characterized in that housing 1 is the chuck 2 of two layers of formation of inside and outside wall, be fixed with spirality partition 13 in the chuck 2, space in the chuck 2 is separated into spirality ventilating duct 14, chuck 2 upper ends have air inlet 15 and air blast 16 to link, the lower end has air outlet 17 and air main 9 to link, the air main 9 vertical drying rooms 8 of striding, horizontal or obliquely stretch out some transverse tubes different in size 10 at air main 9, each manages 9,10 tops are provided with the hole 18 of giving vent to anger.

2, drying device according to claim 1 is characterized in that being fixed with the thrust 19 of being convenient to fixedly smear fire clay on housing 1 inwall at 4 places, combustion chamber.

3, drying device according to claim 1 and 2 is characterized in that parallel being provided with can be by the micropore water pipe 21 of water spray downwards directly over the air main 9.

4, drying device according to claim 3 is characterized in that being furnished with on each transverse tube 10 some apertures 20 of giving vent to anger.