Drying system

Abstract

The utility model relates to the technical field of drying, in particular to a drying system which comprises a tower body, a top air inlet pipe and a bottom air inlet pipe, the top air inlet pipe and the bottom air inlet pipe are arranged on one side of the tower body, and one end of the top air inlet pipe and one end of the bottom air inlet pipe are both communicated with an air supply pipe. The conveying mechanism is arranged on one side of the tower body and used for conveying materials, an upper exhaust mechanism and a lower exhaust mechanism which are used for treating hot air in a furnace are arranged on the outer side of the tower body, and a gate valve is arranged at the bottom of the tower body. If the heat cannot be recycled, the heat can be directly discharged into the atmosphere, energy waste is caused, meanwhile, a drying tower needs to continuously consume fresh hot air to maintain the drying process, energy cost can be increased, hot air discharged by the drying tower may carry some harmful substances, and if the hot air is not treated, the harmful substances are directly discharged, so that energy waste is caused. And pollution to the environment is caused.

Description

TECHNICAL FIELD

[0001] The utility model relates to drying technical field, concretely is drying system. BACKGROUND

[0002] Drying system is a kind of equipment for removing moisture in material, it is usually used in industrial production process, especially in chemical industry, pharmacy, food processing etc., drying system evaporates the moisture in wet material by heating, to achieve the purpose of drying, and the types of drying system are various, including airflow drying tower, spray drying tower, rotary drying tower etc., their working principles and structures are different, but all are to improve the drying efficiency and effect of material. Airflow drying tower is to use high-speed hot air to contact with material, to rapidly take away the moisture in material. When using drying system, the appropriate type needs to be selected according to the properties of material and drying requirement, and process parameters, such as temperature, pressure, drying time etc. need to be strictly controlled, to ensure the quality and drying efficiency of product.

[0003] When using airflow drying tower, the hot air generated in drying process contains a large amount of heat, if cannot be recycled, heat will be directly discharged to atmosphere, causing energy waste, at the same time, drying tower needs to consume fresh hot air constantly to maintain drying process, which will increase energy cost, and the hot air discharged by drying tower may carry some harmful substances, if not treated directly, will cause environmental pollution. CONTENT OF THE UTILITY MODEL

[0004] The utility model aims at providing drying system to solve the problems in the above background technology.

[0005] To achieve the above object, the utility model provides the following technical scheme: drying system, including tower body, still including:

[0006] Top air inlet pipe and bottom air inlet pipe arranged at one side of the tower body, one end of the top air inlet pipe and the bottom air inlet pipe is communicated with air supply pipe;

[0007] Conveying mechanism for conveying material arranged at one side of the tower body, the outside of the tower body is respectively provided with upper exhaust mechanism and lower exhaust mechanism for treating hot air in furnace.

[0008] Preferably, the conveying mechanism includes feed pipe communicated with the top of the tower body, the top of the feed pipe is communicated with material conveying pipe, and the bottom of the material conveying pipe is fixed with vibrating feeder.

[0009] Preferably, the upper air exhaust mechanism comprises three top air outlet branch pipes communicated with the inner wall of the tower body, one end of the top air outlet branch pipes is communicated with a top air outlet main pipe, one end of the top air outlet main pipe is communicated with a dust collector, one side of the dust collector is communicated with a first connecting pipe, one end of the first connecting pipe is communicated with a suction fan, and a chimney is arranged on the top of the suction fan.

[0010] Preferably, the lower air exhaust mechanism comprises two bottom air outlet branch pipes communicated with the inner wall of the tower body, one end of the bottom air outlet branch pipes is communicated with a bottom air outlet main pipe, one end of the bottom air outlet main pipe is communicated with the inner wall of the dust collector, the inner wall of the dust collector is communicated with a second connecting pipe, the second connecting pipe is communicated with the inner wall of the suction fan, one side of the suction fan is communicated with a return air main pipe, and the inner wall of the return air main pipe is respectively communicated with a primary air pipe, a secondary air pipe and a tertiary air pipe.

[0011] Preferably, one end of the primary air pipe is communicated with a blower, one side of the blower is communicated with a hot blast stove, the inner wall of the hot blast stove is communicated with one end of the secondary air pipe, the top of the hot blast stove is communicated with a mixed air chamber, and the inner wall of the mixed air chamber is communicated with one end of the tertiary air pipe.

[0012] Preferably, the bottom of the hot blast stove is provided with an air-cooled slag granulator, the mixed air chamber is communicated with the air supply pipe, and the bottom of the tower body is provided with a plug valve.

[0013] Compared with the prior art, the beneficial effects of the present application are as follows:

[0014] The upper air exhaust mechanism and the lower air exhaust mechanism are arranged, the hot air in the drying system can be discharged in sections, the discharged hot air can be dust-removed, the discharged hot air can meet the national waste gas emission standard, the pollution to the natural environment is avoided, the hot air can be effectively recycled and utilized, the waste of resources is avoided, the recycled hot air is beneficial to fuel combustion, low-oxygen environment combustion carbon material is realized, the combustion temperature is reduced, and the generation of nitrogen oxides is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 A structure schematic view of a preferred embodiment of the drying system provided by the present application is shown in the figure.

[0016] Figure 2 A structure schematic view of the conveying mechanism provided by the present application is shown in the figure.

[0017] Figure 3 A structure schematic view of the upper air exhaust mechanism provided by the present application is shown in the figure.

[0018] Figure 4 A structure schematic view of the lower air exhaust mechanism provided by the present application is shown in the figure.

[0019] In the figure: 1, tower body; 2, top air inlet pipe; 3, bottom air inlet pipe; 4, air supply pipe; 5, conveying mechanism; 51, feeding pipe; 52, material conveying pipe; 53, vibrating feeder; 6, upper air exhaust mechanism; 61, top air outlet branch pipe; 62, top air outlet main pipe; 63, dust collector; 64, first connecting pipe; 65, air suction fan; 66, chimney; 7, lower air exhaust mechanism; 71, bottom air outlet branch pipe; 72, bottom air outlet main pipe; 73, second connecting pipe; 74, air return main pipe; 75, primary air pipe; 76, secondary air pipe; 77, tertiary air pipe; 78, air blower; 79, hot blast stove; 710, mixed air chamber; 8, air-cooled slag cooler; 9, gate valve. DETAILED DESCRIPTION

[0020] In order to further illustrate the technical means and effects adopted by the utility model to achieve the predetermined utility model purposes, the specific embodiments, structures, features and effects according to the utility model will be described in detail as follows in combination with the drawings and preferred embodiments.

[0021] Please refer to Figures 1-4 As shown in the figure, the drying system comprises a tower body 1, which can dry materials by being provided; a top air inlet pipe 2 and a bottom air inlet pipe 3 are arranged on one side of the tower body 1, the top air inlet pipe 2 can transmit hot air to the upper half of the tower body 1, and the bottom air inlet pipe 3 can transmit hot air to the lower half of the tower body 1; an air supply pipe 4 is communicated with one end of the top air inlet pipe 2 and the bottom air inlet pipe 3, and the air supply pipe 4 can transmit hot air to the top air inlet pipe 2 and the bottom air inlet pipe 3; a conveying mechanism 5 is arranged on one side of the tower body 1 to convey materials, and the conveying mechanism 5 can convey materials into the tower body 1; an upper air exhaust mechanism 6 and a lower air exhaust mechanism 7 are arranged on the outside of the tower body 1 to treat hot air in the furnace, the upper air exhaust mechanism 6 and the lower air exhaust mechanism 7 can exhaust hot air in the tower body 1, perform dust removal treatment, and recycle the hot air.

[0022] Please refer to Figure 1 and Figure 2 As shown in the figure, the conveying mechanism 5 comprises a feeding pipe 51 communicated with the top of the tower body 1, the feeding pipe 51 can facilitate the entry of materials into the tower body 1; a material conveying pipe 52 is communicated with the top of the feeding pipe 51, the material conveying pipe 52 can facilitate the conveying of materials; a vibrating feeder 53 is fixed to the bottom of the material conveying pipe 52, and the vibrating feeder 53 can provide power for the conveying of materials.

[0023] Please refer to Figure 1 and Figure 3As shown, the upper air exhaust mechanism 6 includes three top air outlet branch pipes 61 connected to the inner wall of the tower body 1. The top air outlet branch pipes 61 are provided to facilitate the exhaust of the hot air in the upper half of the tower body 1. One end of the top air outlet branch pipes 61 is connected to a top air outlet main pipe 62. The top air outlet main pipe 62 is provided to facilitate the collection of the hot air from the top air outlet branch pipes 61. One end of the top air outlet main pipe 62 is connected to a dust collector 63. The dust collector 63 is provided to perform dust removal treatment on the hot air drawn from the top air outlet main pipe 62 and the bottom air outlet main pipe 72, so that the hot air meets the emission standard. One side of the dust collector 63 is connected to a first connecting pipe 64. The first connecting pipe 64 is provided to connect the dust collector 63 and a suction fan 65. One end of the first connecting pipe 64 is connected to the suction fan 65. The suction fan 65 is provided to draw the hot air out of the tower body 1. A chimney 66 is provided at the top of the suction fan 65. The chimney 66 is provided to facilitate the discharge of the treated hot air.

[0024] As shown in Figure 1 and Figure 4 As shown, the lower air exhaust mechanism 7 includes two bottom air outlet branch pipes 71 connected to the inner wall of the tower body 1. The bottom air outlet branch pipes 71 are provided to facilitate the exhaust of the hot air in the lower half of the tower body 1. One end of the bottom air outlet branch pipes 71 is connected to a bottom air outlet main pipe 72. The bottom air outlet main pipe 72 is provided to facilitate the collection of the hot air from the bottom air outlet branch pipes 71. One end of the bottom air outlet main pipe 72 is connected to the inner wall of the dust collector 63. The inner wall of the dust collector 63 is connected to a second connecting pipe 73. The second connecting pipe 73 is provided to connect the dust collector 63 and the suction fan 65. The second connecting pipe 73 is connected to the inner wall of the suction fan 65. One side of the suction fan 65 is connected to a return air main pipe 74. The return air main pipe 74 is provided to facilitate the recycling of the treated hot air. The inner wall of the return air main pipe 74 is connected to a primary air pipe 75, a secondary air pipe 76, and a tertiary air pipe 77. The primary air pipe 75, the secondary air pipe 76, and the tertiary air pipe 77 are provided to facilitate the classified use of the recycled hot air. One end of the primary air pipe 75 is connected to a blower 78. The blower 78 is provided to treat the hot air. One side of the blower 78 is connected to a hot air furnace 79. The hot air furnace 79 is provided to reheat the recycled hot air. The inner wall of the hot air furnace 79 is connected to one end of the secondary air pipe 76. The top of the hot air furnace 79 is connected to a mixed air chamber 710. The mixed air chamber 710 is provided to facilitate the mixing of the recycled hot air and the manufactured hot air. The inner wall of the mixed air chamber 710 is connected to one end of the tertiary air pipe 77. The bottom of the hot air furnace 79 is provided with an air-cooled slag cooler 8. The air-cooled slag cooler 8 is provided to quickly reduce the temperature of the ash and slag, which is conducive to the transportation of the ash and slag to the slag bin for storage, and also makes good use of the heat of the high-temperature ash and slag. The mixed air chamber 710 is connected to the air supply pipe 4. The bottom of the tower body 1 is provided with a plug valve 9. The plug valve 9 is provided to control the discharge of the materials in the tower body 1.

[0025] Working principle: the worker opens the vibrating feeder 53 to convey the material into the tower body 1 through the conveying pipe 52, and the hot air generated by the hot air furnace 79 enters the tower body 1 in two parts, and the tower body 1 is divided into two parts from top to bottom to dry the material, the hot air in the upper half directly enters the center of the tower body 1, then passes through the material layer in the upper half of the tower body 1, and is discharged from the upper half outlet, and is conveyed to the top air outlet manifold 62 through the top air outlet branch pipe 61, and is discharged to the atmosphere through the dust collector 63 and the induced draft fan 65 and the chimney 66, the hot air in the lower half (high temperature section) enters the tower body 1, then passes through the material layer, and then enters the tower body 1 through the central passage, and then passes through the material layer again, and is discharged from the lower outlet, and is discharged to the hot air furnace 79 for use after being treated by the induced draft fan 65 and the dust collector 63, a part is introduced to the air blower 78 through the primary air pipe 75, a part is used as secondary air into the hot air furnace 79 through the secondary air pipe 76, and the remaining part is discharged to the outlet mixed air chamber 710 of the hot air furnace 79 to be used as the cooling gas of the tower body 1, and is recycled into the tower body 1 to dry the material, so that the waste heat of the flue gas (smoke temperature above 150) after drying the material is recycled. The hot air furnace 79 recycles the high-temperature flue gas with low oxygen content as primary and secondary air, that is, the waste heat of the high-temperature flue gas is used to increase the air temperature, which is beneficial to the combustion of fuel, and realizes low-oxygen environment combustion of carbon material, reduces the combustion temperature, reduces the generation of nitrogen oxides, and realizes that the concentration of nitrogen oxides in the exhaust gas meets the national emission standard requirements. The furnace slag outlet and the cyclone separator ash outlet are provided with the gas-cooled slag cooler 8, the hot air after being heated by the gas-cooled slag cooler 8 is introduced into the furnace through the secondary air blower 78, which can quickly reduce the temperature of the ash and is beneficial to the transportation to the ash storage, and the heat of the high-temperature ash is well utilized.

[0026] The above is only a preferred embodiment of the present application, and does not limit the present application in any form. Although the present application has been disclosed as above, it is not intended to limit the present application. Any person skilled in the art can make some changes or modifications to the above disclosed technical content without departing from the technical solution of the present application, and any equivalent embodiments with equivalent changes and modifications are still within the scope of the technical solution of the present application.

Claims

1. Drying system comprising a tower body (1), characterized in that, Also include: The top air inlet pipe (2) and the bottom air inlet pipe (3) are communicated with the air supply pipe (4) at one end; The conveying mechanism (5) is arranged on one side of the tower body (1) for conveying materials, and the outer side of the tower body (1) is respectively provided with an upper air exhaust mechanism (6) and a lower air exhaust mechanism (7) for treating hot air in the furnace.

2. The drying system of claim 1, wherein: The conveying mechanism (5) includes a feeding pipe (51) communicated with the top of the tower body (1), and the top of the feeding pipe (51) is communicated with a material conveying pipe (52), and the bottom of the material conveying pipe (52) is fixed with a vibrating feeder (53).

3. The drying system of claim 1, wherein: The upper air exhaust mechanism (6) includes three top air outlet branch pipes (61) communicated with the inner wall of the tower body (1), one end of the top air outlet branch pipe (61) is communicated with a top air outlet main pipe (62), one end of the top air outlet main pipe (62) is communicated with a dust collector (63), one side of the dust collector (63) is communicated with a first connecting pipe (64), one end of the first connecting pipe (64) is communicated with a suction fan (65), and a chimney (66) is arranged on the top of the suction fan (65).

4. The drying system of claim 3, wherein: The lower air exhaust mechanism (7) includes two bottom air outlet branch pipes (71) communicated with the inner wall of the tower body (1), one end of the bottom air outlet branch pipe (71) is communicated with a bottom air outlet main pipe (72), one end of the bottom air outlet main pipe (72) is communicated with the inner wall of the dust collector (63), the inner wall of the dust collector (63) is communicated with a second connecting pipe (73), the second connecting pipe (73) is communicated with the inner wall of the suction fan (65), one side of the suction fan (65) is communicated with a return air main pipe (74), and the inner wall of the return air main pipe (74) is respectively communicated with a primary air pipe (75), a secondary air pipe (76) and a tertiary air pipe (77).

5. The drying system of claim 4, wherein: One end of the primary air pipe (75) is communicated with a blower (78), one side of the blower (78) is communicated with a hot blast stove (79), the inner wall of the hot blast stove (79) is communicated with one end of the secondary air pipe (76), the top of the hot blast stove (79) is communicated with a mixed air chamber (710), and the inner wall of the mixed air chamber (710) is communicated with one end of the tertiary air pipe (77).

6. The drying system of claim 5, wherein: The bottom of the hot blast stove (79) is provided with an air-cooled slag cooler (8), the mixed air chamber (710) is communicated with the air supply pipe (4), and the bottom of the tower body (1) is provided with a plug valve (9).

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