Double-furnace dryer

Abstract

The utility model relates to a double-furnace drying machine which comprises a drying box body, and the drying box body is divided into an inner circulation pipeline chamber in the middle and dehumidification circulation chambers located on the two sides of the inner circulation pipeline chamber through a first partition plate. The dehumidification circulating chamber is divided into a power heating chamber at the upper part and a drying chamber at the lower part; the power heating chamber is divided into a power chamber and a heating chamber; the power chamber is communicated with the heating chamber, a fan is arranged in the power chamber, a heating device is arranged in the heating chamber, and a dehumidification valve is arranged at the top of the power chamber; the drying chamber is divided into an inner side ventilation channel, a drying area and an outer side ventilation channel, and a plurality of through holes are formed in ventilation partition plates. A circulation channel is arranged in the internal circulation pipeline chamber, and a dehumidifier is arranged at an air inlet of the circulation channel; an air outlet of the circulation channel is formed in the first partition plate and communicates with the heating chamber. And it can be guaranteed that dried materials are evenly heated, the material drying quality is improved, and the dehumidification effect of dried objects can be effectively guaranteed.

Description

Technical Field

[0001] The utility model relates to heating and drying equipment, in particular to a double-furnace drying machine. Background Art

[0002] The traditional tea drying method mainly uses bamboo charcoal and electric heating. The quality of tea mainly depends on the tea maker's control of temperature and time. During the entire drying process, the tea leaves are in contact with the external environment, and the fragrance will evaporate into the air, causing the loss of effective ingredients. At the same time, it is easily affected by the external temperature and humidity, breeding bacteria, causing the tea leaves to mold, and the quality of the tea leaves cannot be guaranteed. The traditional tea drying method consumes a lot of energy and labor, is inefficient, and also causes varying degrees of environmental pollution. Utility Model Content

[0003] The purpose of the utility model is to provide a double-furnace drying machine, which can ensure that the dried materials are heated evenly, improve the drying quality of the materials, and effectively ensure the dehumidification effect of the dried articles.

[0004] The utility model is realized by the following technical scheme: a double-furnace drying machine, which comprises a drying box 1, wherein the drying box 1 is divided by a first partition 11 to form an inner circulation pipeline chamber 2 in the middle and dehumidification circulation chambers located on both sides of the inner circulation pipeline chamber 2;

[0005] The dehumidification cycle chamber is divided by a second partition 12 to form an upper power heating chamber and a lower drying chamber;

[0006] The power heating chamber is divided into a power chamber 3 and a heating chamber 4 by a third partition 13; the power chamber 3 and the heating chamber 4 are connected, and a fan 31 is provided in the power chamber 3, a heating device 41 is provided in the heating chamber 4, and a dehumidification valve is provided on the top of the power chamber;

[0007] The drying chamber is divided into an inner ventilation channel 51, a drying area 52 and an outer ventilation channel 53 by ventilation baffles 14 on both sides. A plurality of through holes 141 are provided on the ventilation baffles 14. The top of the outer ventilation channel 53 is connected to the heating chamber 4, the top of the inner ventilation channel 51 is connected to the power chamber 3, and a storage rack 6 is provided in the drying area 52.

[0008] A circulation channel 22 is provided in the inner circulation pipeline chamber 2, wherein an air inlet 23 of the circulation channel 22 is opened on the first partition 11 and communicated with the inner ventilation channel 51, and a dehumidifier 25 is provided at the air inlet of the circulation channel 22; an air outlet 24 of the circulation channel 22 is opened on the first partition 11 and communicated with the heating chamber 4; an air inlet valve is provided at the air inlet 23, and an air outlet valve is provided at the air outlet 24.

[0009] Compared with the previous technology, the beneficial effects of the utility model are:

[0010] 1. Through the two-stage drying process, it can ensure the uniform heating of the dried materials to the greatest extent and improve the drying quality of the materials. In this way, the original flavor and nutritional components of dried materials such as tea leaves can be better preserved, and the product quality is better.

[0011] 2. An independent dehumidification effect is achieved through dehumidification cycle, which ensures that the dehumidifier is easily damaged under high temperature conditions, and the dehumidification effect can be achieved without a dehumidifier, and the two independent dehumidification cycle chambers do not interfere with each other.

[0012] 3. Through the drying cycle, the drying effect is maximized and dehumidification is achieved at the same time. Since the heat can be superimposed on each other, the drying effect of the two dehumidification cycle chambers is guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a three-dimensional diagram of the utility model;

[0014] Figure 2 This is a schematic diagram of the structure of the utility model without the cabinet door and the front side wall of the dehumidification circulation chamber;

[0015] Figure 3 This is a schematic diagram of the structure of the utility model without the cabinet door and the overall front side wall;

[0016] Figure 4 This is a schematic diagram of the structure of the utility model without the cabinet door, the overall front side wall and the dehumidifier;

[0017] Figure 5 It is a cross-sectional view of the utility model;

[0018] Figure 6 Schematic diagram of the overall structure of the storage rack;

[0019] Figure 7 It is a schematic diagram of the structure of the disk rack.

[0020] Figure 8 This is the airflow trend diagram for heating internal circulation;

[0021] Fig. 9 This is the airflow trend diagram for the dehumidification external circulation.

[0022] Explanation of reference numerals: 1 drying box, 11 first partition, 12 second partition, 13 third partition, 14 ventilation partition, 141 through hole, 2 inner circulation pipeline chamber, 22 circulation channel, 23 air inlet, 24 air outlet, 25 dehumidifier, 3 power room, 31 fan, 4 heating chamber, 41 heating device, 51 inner ventilation channel, 52 drying area, 53 outer ventilation channel, 6 storage rack, 61 rotating shaft, 62 tray rack, 63 vertical connecting rod, 621 arc rod, 622 first connecting rod, 623 second connecting rod, 7 walking wheel, 8 cabinet door. DETAILED DESCRIPTION

[0023] The utility model is described in detail below in conjunction with the accompanying drawings:

[0024] like Figure 1-5 As shown: a double-furnace drying machine, which comprises a drying box body 1, wherein the drying box body 1 is divided by a first partition plate 11 to form an inner circulation pipeline chamber 2 in the middle and dehumidification circulation chambers located on both sides of the inner circulation pipeline chamber 2;

[0025] The dehumidification cycle chamber is divided by a second partition 12 to form an upper power heating chamber and a lower drying chamber;

[0026] The power heating chamber is divided into a power chamber 3 and a heating chamber 4 by a third partition 13; the power chamber 3 and the heating chamber 4 are connected, and a fan 31 is provided in the power chamber 3, a heating device 41 is provided in the heating chamber 4, and a dehumidification valve is provided on the top of the power chamber;

[0027] The drying chamber is divided into an inner ventilation channel 51, a drying area 52 and an outer ventilation channel 53 by ventilation baffles 14 on both sides. A plurality of through holes 141 are provided on the ventilation baffles 14. The top of the outer ventilation channel 53 is connected to the heating chamber 4, the top of the inner ventilation channel 51 is connected to the power chamber 3, and a storage rack 6 is provided in the drying area 52.

[0028] A circulation channel 22 is provided in the inner circulation pipeline chamber 2, wherein an air inlet 23 of the circulation channel 22 is opened on the first partition 11 and communicated with the inner ventilation channel 51, and a dehumidifier 25 is provided at the air inlet of the circulation channel 22; an air outlet 24 of the circulation channel 22 is opened on the first partition 11 and communicated with the heating chamber 4; an air inlet valve is provided at the air inlet 23, and an air outlet valve is provided at the air outlet 24.

[0029] like Figure 8 , 9 As shown: By controlling the opening and closing of the air inlet valve, air outlet valve and dehumidification valve, there are two circulation modes: internal circulation air drying mode and external circulation dehumidification mode.

[0030] like Figure 8 As shown: in the internal circulation air drying mode, the air inlet valve and the air outlet valve are controlled to be opened, the dehumidification valve is closed, the fan and the heating device 41 are started, and the air flow from the power room 3 passes through the heating room 4, the outer ventilation channel 53, the drying area 52, the inner ventilation channel 51, the air inlet 23, the dehumidifier 25, the circulation channel 22, the air outlet 24 in sequence, and finally flows back into the power room 3; in this process, tea leaves, tobacco leaves, etc. can be dried.

[0031] The ventilation baffle 14 is provided with a plurality of through holes 141 which are evenly arranged to ensure that the generated heat is blown into the outer ventilation passage 53 by the energy-saving heating device 41 and finally evenly blown into the drying area 52 .

[0032] In the internal circulation drying mode, the entire drying process does not come into contact with the external environment, thus retaining the fragrance and effective ingredients of the tea. The dried tea has uniform quality, fresh aroma, no green taste, astringency or burnt taste, refreshing taste and long-lasting brewing resistance.

[0033] like Fig. 9 As shown: in the external circulation dehumidification mode, the air inlet valve and the air outlet valve are controlled to be closed, the dehumidification valve is opened, and the fan and the heating device 41 are started. At this time, the air flow from the power room 3 passes through the heating room 4, the outer ventilation channel 53, the drying area 52, the inner ventilation channel 51 in sequence, and flows back into the power room 3, and part of the air is discharged through the dehumidification valve on the top of the power room 3, and the corresponding external air can also be replenished into the power room from the edge of the dehumidification valve; in this process, the high-humidity air formed in the drying process of tea and tobacco leaves can be discharged to reduce the internal humidity.

[0034] Since the safe temperature operating range of the dehumidifier is 75 degrees Celsius. When the material drying temperature needs to be greater than 75 degrees Celsius, the air inlet valves on both sides of the dehumidifier will be closed to prevent the high-temperature and high-humidity water vapor blown out of the drying box from entering the dehumidifier. The side air outlet valve will also be closed to prevent the high-temperature and high-humidity water vapor blown out of the drying box from being sucked into the drying box by the fan. The dehumidification valve above the fan will be opened. Since the high-temperature and high-humidity water vapor has a lower density than the cold air, it will rise and be discharged from the drying box. Achieve the dehumidification effect. High-temperature external circulation dehumidification can also be called a direct exhaust dehumidification method.

[0035] In terms of the selection of the fan, the fan adopts a 4-blade high temperature and high humidity asynchronous motor, with an air volume of 3200-1800, a full pressure of 120-180, a static pressure of 80-150, an insulation grade of H, a protection grade of 1P55, and a speed of up to 2710r / min. Through a large number of tests, the fan air volume and pressure are sufficient to evenly blow the heat throughout the drying box.

[0036] Hot air dries the materials through the racks. After the heat evaporates the moisture of the high-humidity materials, the high-humidity and high-heat water vapor is blown out of the drying box through the gap and sent to the intermediate dehumidifier (blue component in the figure) to remove the high-humidity water vapor. The high-temperature air is sent back to the air outlet and then reaches the semiconductor heating glass to raise the temperature again to complete the entire high-temperature dehumidification internal circulation process. The dehumidifier is suitable for temperatures of 5 to 75 degrees Celsius, with a circulating air volume of 1,000 cubic meters, a temperature control adjustable range of 10 to 90%, and a two-way 4-time timing function. The dehumidification capacity can reach 138L / D.

[0037] like Figure 6 , 7As shown: the storage rack 6 includes a rotating motor, a rotating shaft 61, a plurality of racks 62 and a vertical connecting rod 63, wherein the rack 62 includes an arc rod 621, a first connecting rod 622 and a second connecting rod 623; both ends of the arc rod 621 are connected by the first connecting rod 622, the first connecting rod 622 and the second connecting rod 623 are connected to each other at 90 degrees, and one end of the second connecting rod 623 is connected to the arc rod 621;

[0038] A plurality of racks 62 are arranged from top to bottom and the two ends of the arc rod 621 and the other end of the second connecting rod 623 are connected by a vertical connecting rod 63; the intersection of the first connecting rod 622 and the second connecting rod 623 in the top and bottom racks 62 is connected to the rotating shaft 61, and the rotating shaft 61 is installed in the drying area, and the rotating motor is installed outside the drying box 1 and its output shaft is connected to the rotating shaft 61.

[0039] The rack 62 adopts a three-point support design and is made of stainless steel square tubes. The weight of the material on the single-layer rack 62 can reach about 20 pounds. Even when rotating at full load, the material rack will not deform or shake. The turntable motor can reach a uniform speed of 5 to 17 revolutions per minute, and the turntable can bear a load of 200 kg.

[0040] It also includes running wheels 7, which are arranged at the bottom of the drying box body 1, so as to facilitate the overall movement of the utility model.

[0041] The cabinet also includes a cabinet door 8. The side of the heating chamber 4 is provided with an opening, and the cabinet door 8 is installed at the opening to facilitate the taking and placing of materials and the sealing during the heating process.

[0042] It also includes a control mechanism, which is connected to and controls the air inlet valve, the air outlet valve, the dehumidification valve, the heating device, the fan 31 and the start and stop of the rotating motor. The control mechanism is a conventional numerical control mechanism, and the utility model will not repeat it.

[0043] The heating device includes a mounting frame and a plurality of heating glasses, which are arranged in sequence and mounted on the mounting frame at equal distances. The electric-heat conversion efficiency of the semiconductor heating glass is as high as 98.77%, which is 26-46.5% energy-saving than the traditional resistance wire, and is energy-saving and efficient. The heat provided can meet the constant temperature of 120 degrees Celsius in the drying box, meeting the drying needs of most materials.

[0044] When in use, the tea leaves need to be placed on the shelf in layers, and different parameters are set according to the different characteristics of the tea leaves. Through digital segmented drying, the heating speed is fast and can be started with one button. If necessary, the entire drying process can be remotely controlled through a mobile phone APP, and data can be viewed in real time. High-precision sensors can accurately grasp the working points of different stages such as heating, moisturizing, and dehumidification. The operating temperature and humidity are unified to achieve fully automated drying. The entire process does not require personnel to turn over or guard, and the entire process is protected. Automatic shutdown is completed, which fully saves labor costs. No toxic or harmful gases are generated during the drying process, and there is no pollution and zero emission, which is green and environmentally friendly, low-carbon and energy-saving. By comparison, the quality of tea leaves dried by the traditional tea drying method and the utility model is greatly different. In most cases, the utility model adopts the internal circulation principle, and dehumidifies through a dehumidifier. The entire drying process does not contact the external environment, retains the fragrance and effective ingredients of the tea leaves, and the dried tea leaves are of uniform quality, fresh aroma, no green taste, astringency and burnt taste, refreshing taste, and long-lasting and durable. The tea roasting technology has been unified, and the quality of the roasted tea has been consistent, which has effectively improved the quality of tea roasting and helped the tea industry move towards green development and reduce labor and costs.

[0045] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. Double furnace drying machine, characterized by: It comprises a drying box (1), wherein the drying box (1) is divided by a first partition (11) to form an inner circulation pipeline chamber (2) in the middle and dehumidification circulation chambers located on both sides of the inner circulation pipeline chamber (2); The dehumidification circulation chamber is divided by a second partition (12) to form an upper power heating chamber and a lower drying chamber; The power heating chamber is divided into a power chamber (3) and a heating chamber (4) by a third partition plate (13); the power chamber (3) and the heating chamber (4) are connected, a fan (31) is provided in the power chamber (3), a heating device (41) is provided in the heating chamber (4), and a dehumidification valve is provided on the top of the power chamber; The drying chamber is divided into an inner ventilation channel (51), a drying area (52) and an outer ventilation channel (53) by ventilation partitions (14) on both sides, and a plurality of through holes (141) are provided on the ventilation partitions (14); the top of the outer ventilation channel (53) is communicated with the heating chamber (4), the top of the inner ventilation channel (51) is communicated with the power chamber (3), and a storage rack (6) is provided in the drying area (52); A circulation channel (22) is provided in the inner circulation pipeline chamber (2), wherein an air inlet (23) of the circulation channel (22) is provided on the first partition plate (11) and communicates with the inner ventilation channel (51), and a dehumidifier (25) is provided at the air inlet of the circulation channel (22); an air outlet (24) of the circulation channel (22) is provided on the first partition plate (11) and communicates with the heating chamber (4); an air inlet valve is provided at the air inlet (23), and an air outlet valve is provided at the air outlet (24).

2. The double-furnace drying machine according to claim 1, characterized in that: The storage rack (6) comprises a rotating motor, a rotating shaft (61), a plurality of racks (62) and a vertical connecting rod (63); the rack (62) comprises an arc-shaped rod (621), a first connecting rod (622) and a second connecting rod (623); both ends of the arc-shaped rod (621) are connected by the first connecting rod (622); the first connecting rod (622) and the second connecting rod (623) are connected to each other at 90 degrees, and one end of the second connecting rod (623) is connected to the arc-shaped rod (621); A plurality of racks (62) are arranged from top to bottom, and the two ends of the arc-shaped rod (621) and the other end of the second connecting rod (623) are connected by a vertical connecting rod (63); the intersection of the first connecting rod (622) and the second connecting rod (623) in the top and bottom racks (62) is connected to the rotating shaft (61), and the rotating shaft (61) is installed in the drying area; the rotating motor is installed outside the drying box (1) and its output shaft is connected to the rotating shaft (61).

3. The double-furnace drying machine according to claim 1, characterized in that: It also includes running wheels (7), which are arranged at the bottom of the drying box body (1).

4. The double-furnace drying machine according to claim 1, characterized in that: It also comprises a cabinet door (8), a side of the heating chamber (4) is provided with an opening, and the cabinet door (8) is installed at the opening.

5. The double-furnace drying machine according to claim 2, characterized in that: It also includes a control mechanism, which is connected to and controls the start and stop of the air inlet valve, the air outlet valve, the dehumidification valve, the heating device, the fan (31), and the rotating motor.

6. The double-furnace drying machine according to claim 1, characterized in that: The heating device comprises a mounting frame and a plurality of heating glasses, wherein the heating glasses are arranged in sequence and at equal intervals and are mounted on the mounting frame.

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