CN202902784U

CN202902784U - Drying device

Info

Publication number: CN202902784U
Application number: CN 201220548068
Authority: CN
Inventors: 黄河
Original assignee: PUBEI COUNTY JIANYE PLYWOOD CO Ltd
Current assignee: PUBEI COUNTY JIANYE PLYWOOD CO Ltd
Priority date: 2012-10-24
Filing date: 2012-10-24
Publication date: 2013-04-24
Anticipated expiration: 2022-10-24

Abstract

The utility model discloses a drying device which comprises a drying box body and a heat source generator, wherein an air inlet is formed at the front end of the drying box and a heat exchanger is arranged at the air inlet portion. The heat exchanger comprises a guide-in pipe, a guide-out pipe and a plurality of heat exchanging pipes, wherein the heat source generator is connected with an inlet of the guide-in pipe, an outlet of the guide-in pipe is communicated with an inlet of each heat exchanging pipe, an outlet of each heat exchanging pipe is communicated with an inlet of the guide-out pipe, and an air outlet at the rear end of drying box body is connected with an draught fan which guides airflow out of the drying box body. After steam is used for exchanging heat and goods are dried, energy consumption is low, drying temperature is suitable, the drying temperature can not be excessive high particularly when wood pieces are dried due to the fact that equilibrium moisture content is relatively low in the drying process caused by excessive high temperature, gradient of moisture content on a wood transverse section is steep, drying defects such as cracking and shrinking are easily produced, and quality of the wood pieces is influenced.

Description

Drying plant

Technical field

The utility model relates to a kind of plant equipment of article being carried out drying, is specially a kind of drying plant that timber, carton, baking vanish etc. is carried out drying.

Background technology

Existing drying plant, be the Chinese utility model patent of CN201992954U such as publication number, a kind of Multifunctional vacuum automatic wood drying device, it comprises drying system, vapour system, heating system, vacuum system and dehumidification system, it passes into hot-air by heating system to drying system, with the timber stoving in the drying system, pass into steam according to the wet degree of doing of timber again, it can carry out drying to timber at any time, solved can't desiccated wood because of climate reasons problem, but it adds hot-air with heating system, its energy consumption is large, and drying system can not effectively be adjusted its heating temperature according to the degree of the drying of wood, and dried lumber quality is not good; Direct high temperature air with heating system passes in the drying system in addition, because the equilibrium moisture content in its dry run is relatively low, moisture gradient is steeper on the timber cross section, easily forms the seasoning defect drying defects such as cracking, shrinkage, affects the quality of timber; And such drying plant, be unsuitable for the drying of other article.

The utility model content

Technical problem to be solved in the utility model provides that a kind of energy consumption is little, the drying plant of good drying effect.

For solving the problems of the technologies described above, the drying plant of the utility model design, comprise oven dry casing and thermal source generating means, described oven dry casing front end offers air inlet, the place is provided with heat exchanger at air inlet, and this heat exchanger comprises ingress pipe, delivery line and Duo Gen heat-exchange tube, and described thermal source generating means is connected with the ingress pipe entrance, the ingress pipe outlet is connected with the heat-exchange tube entrance, and the heat-exchange tube outlet is connected with the delivery line entrance; The rear end air outlet of drying baker is connected with the air-introduced machine that the air-flow outlet box is external.Thermal source is by the heat-exchange tube transferring heat, and the air heat that will blow over heat-exchange tube becomes high temperature air, by the effect of air-introduced machine, flows in whole drying baker again, and with the oven dry of the goods in the drying baker, its energy consumption is little, and drying rate is fast.

The described thermal source generating means of such scheme can be steam raising plant, or hot oil heater, or the hot water generator.

For the heat that makes the thermal source generating means can better transmit, the arrangement mode that described heat-exchange tube can successively superpose for isosceles triangle, outlet corresponding on every heat-exchange tube entrance and the ingress pipe is connected, and entrance corresponding on every heat-exchange tube outlet and the delivery line is connected.

The described every heat-exchange tube outer wall of such scheme can coil fin.Fin can increase the area of dissipation of heat-exchange tube, improves radiating efficiency and radiating effect.

The described thermal source generating means of such scheme can be steam raising plant, and this steam raising plant is steam boiler, and in the water tank of boiler exhaust gas outlet by pipeline access steam boiler, this pipe outlet picks out outside the water tank of steam boiler.Boiler exhaust gas carries out heat exchange by pipeline, with the heating of the water in the steam boiler water tank, so not only can recycle the heat of boiler exhaust gas, also reduces the pollution to air.

For heat exchanger time that can prolonged boiler tail gas, more fully with the heat recovery in the steam boiler tail gas, the water tank part of described pipeline access steam boiler can be for spiral-shaped.

For heat and the saving water resource that can reclaim condensed water, described delivery line outlet is connected with the water tank of steam boiler by drainage pipeline.

In order to regulate the temperature of control oven dry casing, described air-introduced machine can be connected with a frequency converter.Regulate the power of air-introduced machine by frequency converter, the mobile speed of hot-air in the control drying box, its flowing velocity is faster, air velocity through over-heat-exchanger is faster, the heated time of air is shorter, and temperature is lower, and hot-air flowing in casing also accelerated, temperature in the oven dry casing is reduced, thus the temperature in the control oven dry casing.

Because the temperature in the oven dry casing there are differences, the degree of drying of the goods in it is different, and is better in order to make drying effect, can be provided with conveyer belt in the described oven dry casing.The speed of service of conveyer belt has been controlled the drying time of goods, and conveyer belt runs to the diverse location of oven dry casing, bake out temperature is also different, such design can be finely tuned the bake out temperature of goods and drying time, can carry out more specific, the more control of granular to goods.

Can be provided with a plurality of thermometers for detection of different time sections, diverse location in the oven dry casing on the described oven dry casing of such scheme.

Compared with prior art, the utlity model has following advantage:

1, utilize steam, conduction oil or hot water to carry out heat exchange after, goods is dried, its energy consumption is low, and its bake out temperature is suitable, and particularly for the oven dry wood chip, its bake out temperature can not be too high, too high meeting makes the equilibrium moisture content in the dry run relatively low, moisture gradient is steeper on the timber cross section, easily forms the seasoning defect drying defects such as cracking, shrinkage, affects the quality of wood chip;

2, heat-exchange tube isosceles triangle stack, and the fin of heat-exchange tube outer wall setting can be transmitted the heat of thermal source generating means better faster, and its thermal efficiency is high;

3, boiler exhaust gas carries out heat exchange by pipeline, to the heating of the water in the water tank, not only can recycle the heat of boiler exhaust gas, and reduce the pollution to air; The recovery of condensed water can effectively utilize heat and the saving water resource of condensed water;

4, regulate the power of air-introduced machine by frequency converter, realize the temperature control to the oven dry casing, make drying effect better;

5, be provided with conveyer belt in the oven dry casing, can control the drying time of goods, and the bake out temperature of different time sections, goods is carried out drying effect control more specific, more granular.

Description of drawings

Fig. 1 is the structural representation of a kind of drying plant of the utility model.

Number in the figure is: 1, oven dry casing; 2, thermal source generating means; 3, heat exchanger; 3-1, ingress pipe; 3-2, delivery line; 3-3, heat-exchange tube; 4, air-introduced machine; 5, fin; 6, thermometer; 7, frequency converter.

The specific embodiment

As shown in Figure 1, a kind of drying plant of the utility model comprises oven dry casing 1 and thermal source generating means 2, and described oven dry casing 1 upper front end offers air inlet, is provided with heat exchanger 3 at the air inlet place, and inlet air is in over-heat-exchanger 3 flows into oven dry casing 1.Described heat exchanger 3 comprises ingress pipe 3-1, delivery line 3-2 and Duo Gen heat-exchange tube 3-3, described thermal source generating means 2 is connected with ingress pipe 3-1 entrance, ingress pipe 3-1 outlet is connected with heat-exchange tube 3-3 entrance, and heat-exchange tube 3-3 outlet is connected with delivery line 3-2 entrance; The rear end air outlet of drying baker is connected with the air-introduced machine that the air-flow outlet box is external 4.

Described heat-exchange tube 3-3 is seamless pipe, and it is parallel to each other, and with the arrangement mode that isosceles triangle successively superposes, its side view is isosceles triangle.Offer corresponding outlet and entrance on described ingress pipe 3-1 and the delivery line 3-2, ingress pipe 3-1 and delivery line 3-2 establish the two ends at heat-exchange tube 3-3, every heat-exchange tube 3-3 entrance is connected with the upper corresponding outlet of ingress pipe 3-1, and every heat-exchange tube 3-3 outlet is connected with the upper corresponding entrance of delivery line 3-2.Every heat-exchange tube 3-3 is wound with aluminum heat scattering sheet 5 from its arrival end to the port of export along its outer wall helical disk, and this fin 5 has increased the area of dissipation of heat-exchange tube 3-3, has improved the thermal efficiency.

Described thermal source generating means 2 is steam raising plant, this steam raising plant is steam boiler, in the water tank of boiler exhaust gas outlet by pipeline access steam boiler, the part of pipeline in water tank, for spiral-shaped being immersed in the water carried out heat exchange, described pipe outlet picks out outside the water tank of steam boiler, will discharge recycling to the energy in the boiler exhaust gas through the boiler exhaust gas of heat exchange.Described delivery line 3-2 outlet is connected with the water tank of steam boiler by drainage pipeline, with also having the condensed water than Gao Yuwen to pass in the water tank of steam boiler, can reclaim heat and the saving water resource of condensed water.

Described air-introduced machine 4 also is connected with a frequency converter 7.Described oven dry casing 1 is provided with a plurality of thermometers 6 for detection of oven dry casing 1 interior different time sections, diverse location, described thermometer 6 also can replace to temperature sensor, this temperature sensor connects master controller, master controller also connects frequency converter 7, master controller is adjusted frequency converter 7 automatically according to the variations in temperature of oven dry casing 1.

The front end of described oven dry casing 1 is provided with the shipment door, the rear end is provided with the door of stocking up, oven dry is provided with conveyer belt in the casing 1, the traffic direction of conveyer belt be rear end from oven dry casing 1 to front end, its speed of service is according to the goods of the temperature in the baking oven, oven dry, the concrete settings such as length of oven dry casing 1.In this preferred embodiment, be used for drying wood chip, 80～100 ℃ of its bake out temperatures went out one time wood chip in its 15 minutes.Its oven dry cycle is short, and energy consumption is low, and the wood chip of oven dry is without seasoning defect drying defects such as cracking, shrinkages, and the chip quality of oven dry is good.

Certainly, drying plant of the present utility model also can be used for oven dry carton, vegetables etc., and is all within spirit of the present utility model and principle, any modification of making, is equal to replacement, improvement etc., is to be included within the protection domain of the present utility model.

Claims

1. drying plant, comprise oven dry casing (1) and thermal source generating means (2), it is characterized in that: described oven dry casing (1) front end offers air inlet, be provided with heat exchanger (3) at the air inlet place, this heat exchanger (3) comprises ingress pipe (3-1), delivery line (3-2) and many heat-exchange tubes (3-3), described thermal source generating means (2) is connected with ingress pipe (3-1) entrance, ingress pipe (3-1) outlet is connected with heat-exchange tube (3-3) entrance, and heat-exchange tube (3-3) outlet is connected with delivery line (3-2) entrance; The rear end air outlet of drying baker is connected with the air-introduced machine that the air-flow outlet box is external (4).

2. drying plant according to claim 1, it is characterized in that: described thermal source generating means (2) is steam raising plant, or hot oil heater, or the hot water generator.

3. drying plant according to claim 2, it is characterized in that: the arrangement mode that described heat-exchange tube (3-3) successively superposes for isosceles triangle, every heat-exchange tube (3-3) entrance is connected with the upper corresponding outlet of ingress pipe (3-1), and every heat-exchange tube (3-3) outlet is connected with the upper corresponding entrance of delivery line (3-2).

4. the described drying plant of any one according to claim 1～3 is characterized in that: the coiling of described every heat-exchange tube (3-3) outer wall has fin (5).

5. according to claim 2 or 3 described drying plants, it is characterized in that: described thermal source generating means (2) is steam raising plant, this steam raising plant is steam boiler, in the water tank of boiler exhaust gas outlet by pipeline access steam boiler, this pipe outlet picks out outside the water tank of steam boiler.

6. drying plant according to claim 5 is characterized in that: the water tank of described pipeline access steam boiler is partly for spiral-shaped.

7. drying plant according to claim 5 is characterized in that: described delivery line (3-2) outlet is connected with the water tank of steam boiler by drainage pipeline.

8. drying plant according to claim 1, it is characterized in that: described air-introduced machine (4) is connected with a frequency converter (7).

9. drying plant according to claim 1 is characterized in that: be provided with conveyer belt in the described oven dry casing (1).

10. drying plant according to claim 1 is characterized in that: described oven dry casing (1) is provided with a plurality of thermometers (6) for detection of the interior different time sections of oven dry casing (1), diverse location.