CN218955412U - Efficient heat supply energy-saving environment-friendly drying equipment - Google Patents

Abstract

The utility model discloses a high-efficiency heat-supply, energy-saving and environment-friendly drying equipment. The inner cavity of the drying chamber is provided with multiple sets of tubular heat exchange mechanisms, and each set of tubular heat exchange mechanisms is provided with multi-layer heat exchange tubes. The tubular heat exchange tubes are composed of a plurality of diamond-shaped tubes arranged at intervals. The inlet of the uppermost tubular heat exchange mechanism and the outlet of the lowermost tubular heat exchange mechanism are connected to the heat supply device respectively, and the middle tubular heat exchange mechanism is connected end to end to form A continuous turn-back heat medium flow channel; at least one layer of trough-shaped drying mechanism is arranged between the upper and lower adjacent two sets of tubular heat exchange mechanisms, and the inlet and outlet of the trough-shaped drying mechanism are respectively connected with the heating device and the condensing device. The utility model can realize three kinds of heat transfer forms to efficiently transfer heat to granular materials at the same time, and the heat source and heat-carrying gas are circulated for heat supply, the whole drying process is negative-pressure sealed, and the discharged high-humidity gas is washed and condensed to meet the standard discharge without polluting the environment.

Description

Efficient heating, energy saving and environmental protection drying equipment

Technical field:

The utility model relates to a material drying device, in particular to a high-efficiency heat supply, energy-saving and environment-friendly drying device.

Background technique:

At present, the traditional method of drying crops is mainly to let the hot air pass through the particles of the crops under normal pressure to evaporate their moisture. However, this drying method makes the crops have a high crack rate and easily destroys the inherent quality of the crops, and consumes a lot of energy. , The tunnel dryer that uses hot air for drying has a low heat energy utilization rate, only 30%-40%. The thermal energy utilization rate of various drying equipment using indirect conduction and radiation combined heating is 60-80% higher than that of hot air convection dryers, but its utilization of thermal energy is only a simple one-time use, which wastes energy and consumes high energy.

In addition, the drying process of wet granular materials is a high-energy-consuming process that requires heating of granular materials. The heat supply is often only one or two heat transfer forms for heat supply. The heat transfer efficiency is low and the energy consumption is high, and the discharge is high. Humid gas contains a variety of harmful components to pollute the environment.

Utility model content:

The technical problem to be solved by the utility model is: to overcome the deficiencies of the prior art, and provide a high-efficiency heat supply, energy-saving and environment-friendly drying equipment with reasonable design, good heat transfer effect and reduced emission of high-humidity gas.

The technical scheme of the utility model is:

A high-efficiency heating, energy-saving and environment-friendly drying equipment, including a drying bin, the upper outlet of the drying bin communicates with the discharge port of the material hoist through an air shutoff device, and the lower end outlet of the drying bin communicates with the outlet through another air shutoff device. The feeding port of the feeding mechanism is connected, the drying bin is a cuboid structure, at least two sets of tubular heat exchange mechanisms are arranged in the inner cavity of the drying bin, each set of tubular heat exchange mechanisms is provided with at least two layers of heat exchange tubes, Each layer of tubular heat exchange tubes is composed of at least two diamond-shaped tubes arranged at intervals. The inlet of the uppermost tubular heat exchange mechanism communicates with the heat supply device through the heat supply tube, and the outlet of the lowermost tubular heat exchange mechanism communicates with the heat supply device through the return pipe. The heating device is connected, and the upper and lower adjacent tubular heat exchange mechanisms in the middle are connected end to end to form a continuous return heat medium flow channel; at least one layer of groove-shaped drying mechanism is arranged between the upper and lower adjacent two sets of tubular heat exchange mechanisms, and each groove-shaped drying mechanism Each mechanism is provided with at least one layer of angular tubes, and each layer of angular tubes is composed of at least two angular tubes arranged at intervals. The inlet and outlet of the trough-shaped drying mechanism communicate with the heating device and the condensing device respectively.

Further: the upper end of the drying bin is provided with a cone top, and the cone top is provided with a powerless distributor; the lower end of the drying bin is provided with a cone bottom.

Further: an electric hot air distribution valve is arranged on the return pipe, and the electric hot air distribution valve divides the hot air into two branches, one branch returns to the heating device, and the other branch serves as a heat source to communicate with the The inlet of the horn tube is communicated.

Further: the heating device includes a natural gas burner, a combustion chamber, a heating fan and a heating pipe; the condensing device includes a water tank, a glass fiber reinforced plastic cooling tower and a condenser.

Further: the drying bin is an integral structure, or a split and combined structure, consisting of at least two bin body segments, each of the bin body segments is fixed together by a connecting piece, and each of the bin body segments Corresponding tubular heat exchange mechanisms and trough-shaped drying mechanisms are respectively provided in the bin body segments, and the tubular heat exchange mechanisms and trough-like drying mechanisms of the upper and lower adjacent bin body segments are connected in one-to-one correspondence.

Further: the drying chamber is provided with an evacuation pipe, and the evacuation pipe is connected with a vacuum pump or an induced draft fan to maintain a negative pressure state in the drying chamber.

The beneficial effects of the utility model are:

1. The heat-carrying gas of the tube heat source of the utility model circulates to the rhombus tube in the drying chamber to supply heat to the granular material for radiation (penetration) heat transfer, conduction (indirect) heat transfer, and the excess gas of the heat-supply heat source of the utility model is introduced into the airtight drying chamber Convective heat transfer of materials realizes simultaneous heat supply in three heat transfer forms.

2. The drying chamber of the utility model is sealed with a certain negative pressure, so that the high-humidity gas generated during the drying process will not leak out, reducing heat loss and improving the utilization rate of heat.

3. The utility model adopts a recirculating water return type circular condenser to wash and condense the discharged high-humidity gas so as to reach the standard discharge without polluting the environment, and has a good environmental protection effect.

4. The utility model has reasonable design, good heat transfer effect, and reduces the discharge of high-humidity gas. It has a wide application range and is easy to popularize and implement. Compared with the traditional drying method, it has good economic benefits.

Description of drawings:

Figure 1 is a structural schematic diagram of an efficient heating, energy-saving and environment-friendly drying equipment.

Detailed ways:

Embodiment: See Fig. 1, in the figure, 1-material hoist, 2-air shut-off device, 3-unpowered distributor, 4-rhombic tube, 5-burner, 6-combustion chamber, 7-heat supply fan, 8-heating pipe, 9-electric hot air distribution valve, 10-secondary heating distribution pipe, 11-saturated water vapor discharge pipe, 12-exhaust fan, 13-condenser, 14-non-polluting exhaust gas outlet, 15 -water tank, 16-fiberglass cooling tower.

High-efficiency heating, energy-saving and environment-friendly drying equipment, including a drying chamber, the upper outlet of the drying chamber is connected to the discharge port of the material hoist 1 through the air shutoff device 2, and the lower end outlet of the drying chamber is connected to the inlet of the discharge mechanism through another air shutoff device. The material port is connected, wherein: the drying chamber is a cuboid structure (the end face shape is square), and at least two sets of tubular heat exchange mechanisms are arranged in the inner cavity of the drying chamber, and each set of tubular heat exchange mechanisms is equipped with at least two layers of heat exchange tubes. Each layer of tubular heat exchange tubes is composed of at least two rhombic tubes 4 arranged at intervals, and the rhombic tubes 4 of the upper and lower adjacent layers are arranged in a staggered manner, so that the material presents a zigzag movement during the falling process, which can increase the contact with the rhombic tubes 4 The second is to increase the formation of materials, and further improve the drying efficiency and uniformity. The inlet of the uppermost tubular heat exchange mechanism is connected to the heating device through the heat supply pipe 8, and the outlet of the lowermost tubular heat exchange mechanism is through the return pipe. It communicates with the heating device 8, and the upper and lower adjacent tubular heat exchange mechanisms in the middle are connected end to end to form a continuous return heat medium flow channel; at least one layer of groove-shaped drying mechanism is arranged between the upper and lower adjacent two sets of tubular heat exchange mechanisms, Each layer of angular tubes is provided with at least one layer of angular tubes, and each layer of angular tubes is composed of at least two angular tubes arranged at intervals. The inlet and outlet of the trough-shaped drying mechanism are respectively connected with the heating device 8 and the condensation device.

The upper end of the drying bin is provided with a cone top, and the cone top is provided with an unpowered distributor 3; the lower end of the drying bin is provided with a cone bottom. An electric hot air distribution valve 9 is arranged on the return pipe, and the electric hot air distribution valve 9 divides the hot air into two branches. One branch returns to the heating device 8 and continues heating to increase the temperature of the hot air for recycling. The road is used as a heat source to communicate with the inlet of the angular pipe, and the secondary heat supply air distribution pipe 10 can be used in the middle to send the hot blast to the angular pipe respectively. Of course, the trough-shaped drying mechanisms of different layers can be connected end to end to form a combination of different layers, allowing the hot air to form a return route, and finally discharged into the cooling device by the exhaust fan 12 and the saturated water vapor discharge pipe 11.

The heating device includes a natural gas burner 5, a combustion chamber 6, a heating fan 7 and a heating pipe 8; the hot air generated by burning is transported to the heating pipe 8 through the heating fan 7, and then passes into the rhombic pipe 4 for condensation. The device includes a water tank 15, a glass fiber reinforced plastic cooling tower 16 and a condenser 13 to cool the discharged water vapor and reduce the temperature of the discharged gas. After cooling, the gas is discharged into the atmosphere through the non-polluting waste gas outlet 14 at the upper end of the condenser 13.

The drying chamber is an integral structure, or a split combined structure, consisting of at least two chamber segments (two segments in the figure, of course, it can also be three segments, four segments or five segments etc., according to the needs), each bin body segment is fixed together by a connecting piece, each bin body segment is equipped with a corresponding tubular heat exchange mechanism and a groove-shaped drying mechanism, and the upper and lower adjacent bin bodies The segmental tubular heat exchange mechanism and the trough-shaped drying mechanism are connected one by one to perform tubular drying and trough-shaped drying respectively.

The drying chamber is provided with an evacuation pipe, which is connected with a vacuum pump or an induced draft fan (not shown in the figure), so as to maintain a negative pressure state in the drying chamber and reduce the leakage of steam. At present, diamond-shaped tubes 4 and angular tubes are relatively common, and their fixing methods and specific structures are not described in detail. According to needs, a discharge device can be installed at the lower part of the drying chamber, which can quickly and evenly discharge materials.

When in use, start the heating device 8 to supply hot air into the rhombic tube 4, and the material enters the square drying bin through the material hoist 1 and the air locker, and during the falling process of the square drying bin, it is radiated and conducted by the rhombic tube 4. The effect of heat is gradually dried, falling to the opening of the lower end of the square drying chamber, and then discharged through the air locker connected in series to complete a drying process and achieve continuous drying.

Determine the opening and closing of the electric hot blast distribution valve 9 and the size of the opening and closing according to the temperature of the hot blast. When the temperature is low at the beginning, do not start or open a small opening, so that all or most of the hot blast returns to the heating device and heats up again. In the middle stage of drying, the temperature of the discharged hot air is high. At this time, open or open the electric hot air distribution valve 9, pour the hot air into the angular tube, and dry the material again. The saturated water vapor discharged from the angular tube is discharged into the atmosphere after cooling. Complete the entire work cycle.

The above is only a preferred embodiment of the utility model, and does not limit the utility model in any form. Any simple modification made according to the technical essence of the utility model still belongs to the technical solution of the utility model. within range.

Claims (6)

1. A high-efficiency heating, energy-saving and environment-friendly drying equipment, including a drying bin, the upper outlet of the drying bin communicates with the discharge port of the material hoist through an air shutoff device, and the lower end outlet of the drying bin passes through another air shutoff device It communicates with the feed port of the discharge mechanism, and is characterized in that: the drying bin is a cuboid structure, and at least two sets of tubular heat exchange mechanisms are arranged in the inner cavity of the drying bin, and each set of tubular heat exchange mechanisms is equipped with at least Two layers of heat exchange tubes, each layer of tubular heat exchange tubes is composed of at least two diamond-shaped tubes arranged at intervals, the inlet of the uppermost tubular heat exchange mechanism communicates with the heating device through the heat supply tube, and the lowermost tubular heat exchange mechanism The outlet of the outlet is connected to the heating device through the return pipe, and the upper and lower adjacent tubular heat exchange mechanisms in the middle are connected end to end to form a continuous return heat medium flow channel; at least one layer of groove-shaped drying mechanism is arranged between the upper and lower adjacent two sets of tubular heat exchange mechanisms , each trough-shaped drying mechanism is provided with at least one layer of angular tubes, each layer of angular tubes is composed of at least two angular tubes arranged at intervals, the inlet and outlet of the trough-shaped drying mechanism are respectively connected to the heating device and the condensation device connected. 2. The high-efficiency heating, energy-saving and environment-friendly drying equipment according to claim 1, characterized in that: the upper end of the drying chamber is provided with a cone top, and the cone top is provided with a non-powered distributor; the lower end of the drying chamber is provided with With conical bottom. 3. The high-efficiency heating, energy-saving and environment-friendly drying equipment according to claim 1, characterized in that: the return pipe is provided with an electric hot air distribution valve, and the electric hot air distribution valve divides the hot air into two branches, one branch The path returns to the heating device, and another branch communicates with the inlet of the angular tube as a heat source. 4. The high-efficiency heating, energy-saving and environment-friendly drying equipment according to claim 1, characterized in that: the heating device includes a natural gas burner, a combustion chamber, a heating fan and a heating pipe; the condensing device includes a water tank, a glass fiber reinforced plastic Cooling towers and condensers. 5. The high-efficiency heating, energy-saving and environment-friendly drying equipment according to claim 1, characterized in that: the drying chamber is an integral structure, or a split combined structure, consisting of at least two chamber segments, each The bin body segments are fixed together by connectors, each of the bin body segments is respectively provided with a corresponding tubular heat exchange mechanism and a groove-shaped drying mechanism, and the upper and lower adjacent bin body segments The tubular heat exchange mechanism and the trough drying mechanism are connected in one-to-one correspondence. 6. The high-efficiency heating, energy-saving and environment-friendly drying equipment according to claim 1, characterized in that: the drying chamber is provided with an evacuation pipe, and the evacuation pipe is connected with a vacuum pump or an induced draft fan, so that the drying chamber is kept under load. pressure state.

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