CN213260514U - Desiccator is used in amino moulding plastic production - Google Patents

Abstract

The utility model relates to a desicator is used in amino moulding plastic production, including the preheating section that sets gradually, drying section and equilibrium section, the preheating section is connected with first draught fan through first induced duct, first draught fan is arranged in taking out the gas that preheats in the section and carries out the aftertreatment, the drying section is connected with the second draught fan through the second induced duct, the second draught fan is arranged in taking out the gas in the drying section and carries out the aftertreatment, the equilibrium section is connected with the third draught fan through the third induced duct, the exit end of third draught fan is linked together with the preheating section through the third blast pipe, it is big to have solved among the prior art to contain formaldehyde tail gas volume, reprocessing power consumption is big, manufacturing cost and environmental protection contradiction that both can not compromise.

Description

Desiccator is used in amino moulding plastic production

Technical Field

The utility model relates to a desicator technical field particularly, relates to a desicator is used in amino molding plastic production.

Background

An amino moulding plastic as one of the thermosetting plastics is prepared through addition reaction between formaldehyde and urea or melamine to obtain prepolymer, mixing it with filler (wood pulp), pigment, latent solidifying agent and demoulding agent in kneading machine, dewatering (ordinary-pressure dewatering and vacuum dewatering) to obtain particles containing 25-30% water, drying in flat plate drier to obtain dried particles with different sizes (less than 4%), and further processing.

After entering the inlet of the flat plate dryer, loose particles kneaded by the amino molding compound pass through a preheating section, a drying section, a balancing section and a cooling section, the traveling speed of the mesh belt is continuously accelerated, the thickness of the material is sequentially thinned, the material is dried uniformly, and the drying of the material is a heat transfer effect between air and wind. Under the condition of certain air temperature and air pressure, the lower the moisture content of the material is, the more loose the material is, the smaller the resistance of hot air penetration is, and the better the drying effect is.

In every section of drying process of the dryer, except the air temperature and the air pressure of the air feeder, the hot air penetrates through the material, the suction force of the induced draft fan plays an active role to the material with the same humidity, and the air pressure of the suction force assisting air feeder is more beneficial to the penetration of the hot air.

All there is the draught fan in each section of dull and stereotyped desicator to take out the tail gas that contains formaldehyde, keeps the interior operation under the condition of slightly becoming the negative pressure of desicator, prevents that formaldehyde gas from escaping outward and polluting the environment, keeps the good operating mode in production place. The tail gas is sent into the gas collection box by the draught fan to turn, and then after two times of spraying absorption, the residual gas enters the subsequent continuous absorption treatment to be emptied, but the amount of the tail gas to be treated is large, the flow is long, the power consumption is large, and the contradiction between the cost and the environmental protection is generated.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a desicator is used in amino moulding plastic production, this amino moulding plastic desicator have solved among the prior art that formaldehyde-containing tail gas volume is big, and it is big to handle power consumption again, and manufacturing cost and environmental protection contradiction that both can not compromise.

In order to realize above-mentioned purpose, first aspect, the embodiment of the utility model provides a desicator is used in amino moulding plastic production, including preheating section, dry section and the balanced section that sets gradually, preheating section is connected with first draught fan through first induced duct, first draught fan be used for with gas in the preheating section is taken out and is carried out the aftertreatment, dry section is connected with the second draught fan through the second induced duct, the second draught fan be used for with gas in the dry section is taken out and is carried out the aftertreatment, the balanced section is connected with the third draught fan through the third induced duct, the exit end of third draught fan through the third blast pipe with preheating section is linked together.

In an optional implementation mode, a plurality of first heat exchangers are arranged on the outer side wall of the preheating section, a plurality of branch pipes are arranged at intervals at one end, far away from the third draught fan, of the third air supply pipe, and the branch pipes are connected with the first heat exchangers in a one-to-one correspondence mode.

In an optional implementation mode, a fresh air inlet is formed in the side face of the first heat exchanger, and a filter screen is arranged at the fresh air inlet.

In optional embodiment, the top surface of preheating section is equipped with a plurality of first air blowers, the top surface of drying section is equipped with a plurality of second air blowers, the top surface of balancing section is equipped with a plurality of third air blowers, be equipped with a plurality of second heat exchangers on the lateral wall of drying section be equipped with a plurality of third heat exchangers on the lateral wall of balancing section, first air blower with first heat exchanger one-to-one is connected, the second air blower with the second heat exchanger one-to-one is connected, the third air blower with the third heat exchanger one-to-one is connected.

In an optional implementation mode, the outlet end of the first induced draft fan and the outlet end of the second induced draft fan are respectively communicated with the gas collection cabinet through the first air supply pipe and the second air supply pipe, and a spray absorption tower is arranged in the gas collection cabinet and used for absorbing tail gas containing formaldehyde.

In an optional embodiment, the dryer for producing amino molding compound further comprises a cooling section, the cooling section is located on one side of the balancing section, which is far away from the drying section, and a cold air exhaust fan is arranged on the cooling section and used for sucking gas which is not absorbed by the spray absorption tower in the gas collection cabinet.

In an alternative embodiment, a first transition section is arranged between the preheating section and the drying section, and a second transition section is arranged between the drying section and the balancing section.

In an alternative embodiment, a mesh belt is arranged in the amino molding compound production dryer and used for conveying materials from the preheating section to the cooling section.

In an optional embodiment, the mesh belt comprises three sections, the first transition joint is arranged between the first section and the second section of the mesh belt, the second transition joint is arranged between the second section and the third section of the mesh belt, and the advancing speed of the mesh belt along the direction of conveying materials is sequentially increased.

In an optional implementation mode, the air volume of the first induced draft fan is the same as that of the third induced draft fan, and the air volume of the second induced draft fan is larger than that of the first induced draft fan.

Has the advantages that:

the embodiment of the utility model provides a desicator is used in amino moulding plastic production, including the preheating section that sets gradually, drying section and equilibrium section, the preheating section is connected with first draught fan through first induced duct, first draught fan is arranged in taking out the gas that preheats in the section and carries out the aftertreatment, drying section is connected with the second draught fan through the second induced duct, the second draught fan is arranged in taking out the gas in the drying section and carries out the aftertreatment, the equilibrium section is connected with the third draught fan through the third induced duct, the exit end of third draught fan is linked together through third blast pipe and preheating section.

In the above arrangement, the tail gas containing formaldehyde extracted from the balance section of the dryer is sent to each air inlet of the preheating section to replace most of fresh air to enter the preheating section, the required temperature can be reached after moderate heating, and then the materials in the dryer are heated, so that the heat is secondarily utilized, the steam consumption of the preheating section for heating the room temperature to the rated temperature is greatly reduced, the energy-saving effect is obvious, and the production cost is reduced.

In addition, originally, three induced draft fans operate simultaneously to extract the tail gas containing formaldehyde, and then the tail gas is treated in a centralized manner. The tail gas circulation that will balance the section is to the preheating section now, because the total amount of wind of first draught fan and second draught fan is certain, just so be equivalent to having reduced the extraction to containing formaldehyde tail gas, the total flow of tail gas reduces, under the unchangeable condition of sectional area, the gas velocity that the tail gas flows has the reduction of great degree, thereby the effect of absorbing tail gas in the aftertreatment process improves, make the load of formaldehyde reprocessing process alleviate, be of value to reducing the manufacturing cost of enterprise, the ecological environment of protection mill.

Other features and advantages of the present invention will be described in detail in the detailed description which follows.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

FIG. 1 is a schematic structural diagram of a dryer for producing amino molding compound according to an embodiment of the present invention;

FIG. 2 is a sectional view taken along line A-A of a dryer for producing amino molding compound according to an embodiment of the present invention.

Icon: 1-preheating section; 2-a drying section; 3-a balancing section; 4-a first induced draft pipe; 5-a second induced draft pipe; 6-a third induced draft pipe; 7-a first induced draft fan; 8-a second induced draft fan; 9-a third induced draft fan; 10-a first blast pipe; 11-a second blast pipe; 12-a third blast pipe; 13-a gas collecting cabinet; 14-a first heat exchanger; 15-a second heat exchanger; 16-a third heat exchanger; 17-branch pipe; 18-fresh air inlet; 19-a filter screen; 20-a first exhaust fan; 21-a second exhaust fan; 22-a third exhaust fan; 23-spraying an absorption tower; 24-a cooling section; 25-a cold air blower; 26-a first transition section; 27-a second transition section; 28-Net belt.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings in the embodiments of the present invention are combined below to clearly and completely describe the technical solutions in the embodiments of the present invention. It is to be understood that the embodiments described are only some of the embodiments of the present invention, and not all of them. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

In the description of the present invention, it should be noted that the terms "inside" and "outside" are used for indicating the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship that the utility model is usually placed when using, and are only for convenience of describing the present invention and simplifying the description, but not for indicating or implying that the device or element to be referred must have a specific position, be constructed and operated in a specific position, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example one

Referring to fig. 1, the desicator is used in amino molding compound production that this embodiment provided, including preheating section 1 that sets gradually, drying section 2 and equilibrium section 3, preheating section 1 is connected with first draught fan 7 through first induced air pipe 4, first draught fan 7 is arranged in taking out the gas in preheating section 1 and carries out the aftertreatment, drying section 2 is connected with second draught fan 8 through second induced air pipe 5, second draught fan 8 is arranged in taking out the gas in drying section 2 and carries out the aftertreatment, equilibrium section 3 is connected with third draught fan 9 through third induced air pipe 6, the exit end of third draught fan 9 is linked together through third blast pipe 12 and preheating section 1.

In the above arrangement, the tail gas containing formaldehyde extracted from the balance section 3 of the dryer is sent to each section of air inlet of the preheating section 1 to replace most of fresh air to enter the preheating section 1, the required temperature can be reached after moderate heating, and then the materials in the dryer are heated, so that the heat is secondarily utilized, the steam consumption of the preheating section 1 for heating the room temperature to the rated temperature is greatly reduced, the energy-saving effect is obvious, and the production cost is reduced.

In addition, originally, three induced draft fans operate simultaneously to extract the tail gas containing formaldehyde, and then the tail gas is treated in a centralized manner. The tail gas circulation that will balance section 3 now is to preheating section 1, because the total amount of wind of first draught fan 7 and second draught fan 8 is certain, just so be equivalent to having reduced the extraction to containing formaldehyde tail gas, the total flow of tail gas reduces, under the unchangeable condition of sectional area, the gas velocity that the tail gas flows has the reduction of great degree, thereby the effect that absorbs tail gas in the aftertreatment process improves, make the load of formaldehyde reprocessing process alleviate, be of value to reducing the manufacturing cost of enterprise, the ecological environment of protection mill.

Specifically, the present example also provides the following detailed description of the specific structure of the dryer for producing amino molding compound.

Referring to fig. 1 and 2, in this embodiment, a plurality of first heat exchangers 14 are disposed on an outer side wall of the preheating section 1, a plurality of branch pipes 17 are disposed at intervals at one end of the third air supply pipe 12 away from the third induced draft fan 9, and the branch pipes 17 are connected to the first heat exchangers 14 in a one-to-one correspondence manner.

Specifically, a plurality of first heat exchangers 14 are fixedly arranged on the outer side wall of the preheating section 1, the number of the first heat exchangers 14 can be two or more, preferably, the number of the first heat exchangers 14 is three, a plurality of branch pipes 17 are arranged at intervals at one end, far away from the third induced draft fan 9, of the third blast pipe 12, the number of the branch pipes 17 can be two or more, preferably, the number of the branch pipes 17 is also three, the number of the branch pipes 17 is the same as that of the first heat exchangers 14, the branch pipes 17 are communicated with air inlets of the first heat exchangers 14 in a one-to-one correspondence manner, so that the formaldehyde-containing tail gas extracted from the balancing section 3 is sent to an air inlet of the first heat exchanger 14 to replace most of fresh air to enter the heat exchangers, and the formaldehyde-containing tail gas circulating from the balancing section 3 has a certain temperature and can reach the temperature required by the preheating section 1 after, therefore, the heat is secondarily utilized, the steam consumption of the preheating section 1 for heating the room temperature to the rated temperature is greatly reduced, the energy-saving effect is obvious, and the production cost is reduced.

Referring to fig. 2, in this embodiment, a fresh air inlet 18 is formed in the side surface of the first heat exchanger 14, and a filter screen 19 is disposed at the fresh air inlet 18.

Specifically, all be equipped with new trend import 18 on the lateral wall of three first heat exchanger 14, new trend import 18 department all is provided with filter screen 19 to suspended particles or other impurity in the de-aeration, when the desicator was operated, heated air circulation in the balanced section 3 was to preheating section 1 in, preheats to the settlement temperature as most hot-blast, then preheats incasement material, and not enough wind is inhaled by new trend import 18, mixes with circulating hot-blast behind filter screen 19, dries after first heat exchanger 14 heats.

The amount of sucked fresh air is determined by the humidity of the air at that time, the draft of the draught fan, the opening degree of the fresh air inlet 18 and other factors, the main factors are the air humidity, the air humidity in winter is low, the fresh air inlet 18 can meet the requirement of preheating materials in the box body as long as being slightly opened, the opening amount of the fresh air inlet 18 is large under the high-humidity condition in summer, and the temperature after heat exchange is slightly low so as to protect the inherent properties of the materials.

It should be noted that the filter screen 19 may be a stainless steel mesh, a titanium alloy mesh, or other filter screens as long as the function of filtering suspended impurities in the air is achieved.

Continuing to refer to fig. 1 and 2, in this embodiment, the top outer surface of the preheating section 1 is provided with a plurality of first exhaust fans 20, the top outer surface of the drying section is provided with a plurality of second exhaust fans 21, the top outer surface of the balancing section 3 is provided with a plurality of third exhaust fans 22, the outer side wall of the drying section 2 is provided with a plurality of second heat exchangers 15, the outer side wall of the balancing section 3 is provided with a plurality of third heat exchangers 16, the first exhaust fans 20 are connected with the first heat exchangers 14 in a one-to-one correspondence manner, the second exhaust fans 21 are connected with the second heat exchangers 15 in a one-to-one correspondence manner, and the third.

Specifically, the top of the preheating section 1, the top of the drying section 2 and the top of the balancing section 3 are respectively and fixedly provided with a first exhaust fan 20, a second exhaust fan 21 and a third exhaust fan 22, the outer side walls of the preheating section 1, the drying section 2 and the balancing section 3 are respectively and fixedly provided with a first heat exchanger 14, a second heat exchanger 15 and a third heat exchanger 16, under the action of the first exhaust fan 20, air enters from the inlet of the first heat exchanger 14, is heated to a preset temperature through the first heat exchanger 14, then carries out preheating treatment on the material in the preheating section 1, under the action of the second exhaust fan 21, air enters from the inlet of the second heat exchanger 15, is heated by the second heat exchanger 15, and then is dried in the drying section 2, under the action of the third exhaust fan 22, air enters from the inlet of the third heat exchanger 16, is heated by the third heat exchanger 16, and then is subjected to the equilibrium treatment on the material in the equilibrium section 3.

With reference to fig. 1, in this embodiment, the outlet end of the first induced draft fan 7 and the outlet end of the second induced draft fan 8 are respectively communicated with the gas collecting cabinet 13 through the first air supply pipe 10 and the second air supply pipe 11, and the gas collecting cabinet 13 is internally provided with a spray absorption tower 23 for absorbing the tail gas containing formaldehyde.

Specifically, first draught fan 7 and second draught fan 8 communicate with gas collecting cabinet 13, under the effect of first draught fan 7, the air that contains formaldehyde in preheating section 1 gets into gas collecting cabinet 13 via first blast pipe 10, under the effect of second draught fan 8, the air that contains formaldehyde in drying section 2 gets into gas collecting cabinet 13 via second blast pipe 11, be provided with spray absorption tower 23 in the gas collecting cabinet 13, through twice or more than twice spray absorption, preferably, through twice spray absorption after, tail gas gets into follow-up retreatment.

It is worth to be noted that, the tail gas in the balancing section 3 is circulated to the preheating section 1, and because the total air volume of the first induced draft fan 7 and the second induced draft fan 8 is constant, the extraction of the tail gas containing formaldehyde is reduced, the total flow of the tail gas is reduced, and under the condition that the sectional area is not changed, the air velocity of the tail gas flow is reduced to a greater extent, so that the effect of the spray absorption tower 23 on absorbing the tail gas is improved, and the load of the formaldehyde reprocessing process is reduced.

With continuing reference to fig. 1 and 2, in this embodiment, the dryer for producing amino molding compound further includes a cooling section 24, the cooling section 24 is located on a side of the equilibrium section 3 away from the drying section 2, and a cold air exhaust fan 25 is disposed on the cooling section 24 for exhausting the gas in the gas collection tank 13 that is not absorbed by the spray absorption tower 23.

Specifically, a cold air exhaust fan 25 is fixedly arranged on the side wall of the cooling section 24, the formaldehyde-containing tail gas is subjected to spray absorption twice or more in the spray absorption tower 23, preferably, after the two spray absorption times, the formaldehyde-containing tail gas cannot be directly exhausted, and under the action of the cold air exhaust fan 25, the gas which is not absorbed by the spray absorption tower 23 in the gas collection cabinet 13 enters the cooling section 24 for subsequent reprocessing.

With continued reference to fig. 1 and 2, in the present embodiment, a first transition joint 26 is disposed between the preheating section 1 and the drying section 2, and a second transition joint 27 is disposed between the drying section 2 and the balancing section 3.

Specifically, the moisture content between the preheating section 1 and the drying section 2 is different, the preheating section 1 and the drying section 2 are isolated by the first transition section 26, and the guide plate is arranged in the first transition section 26 and guides the material from the preheating section 1 to the drying section 2. In a similar way, the moisture content between the drying section 2 and the balance section 3 is different, the drying section 2 and the balance section 3 are isolated by the second transition section 27, and the guide plate is also arranged in the second transition section 27 to guide the material to the balance section 3 from the drying section 2.

With continued reference to fig. 1 and 2, in this embodiment, a mesh belt 28 is disposed within the amino molding compound production dryer for transporting material from the preheating section 1 to the cooling section 24.

Specifically, a stainless steel wire mesh belt can be adopted as a material conveying belt in the dryer, the diameter of the stainless steel wire mesh belt is generally 0.7-0.8mm, and the side length of a mesh is 2 mm; also can adopt the plate-type material that punches as the material conveyer belt, when carrying out drying process like this, panel formula material can transfer heat on the one hand, and on the other hand hot-air can transfer heat through the diaphragm orifice for heat transfer efficiency improves, and it is more even to transfer heat, and the material is difficult for gluing on the otter board in addition, also relatively when clearing up the material.

With continued reference to fig. 1 and 2, in this embodiment, the belt 28 includes three sections, a first transition joint 26 is disposed between the first section and the second section of the belt 28, a second transition joint 27 is disposed between the second section and the third section of the belt 28, and the forward speed of the belt 28 along the direction of conveying the material is sequentially increased.

The mesh belt 28 is accelerated in sequence along the direction of material transmission, so that the material is thinned in sequence, the material is dried uniformly, and the drying of the material is the heat transfer effect between air and wind. Under the condition of certain wind temperature and wind pressure, the lower the moisture content of the material is, the more loose the material appears, the smaller the resistance of hot wind penetration is, and the better the drying effect is.

Like this, because the material is transported to the 3 in-process of balanced section from preheating section 1, the moisture content of material descends gradually, generally reduces about 7%, and this makes the material disperse very loosely, and hot-blast penetrating effect is very good.

With reference to fig. 1, in this embodiment, the air volume of the first induced draft fan 7 is the same as the air volume of the third induced draft fan 9, and the air volume of the second induced draft fan 8 is greater than the air volume of the first induced draft fan 7.

Specifically, the air volume of the first induced draft fan 7 in the preheating section 1 is the same as that of the third induced draft fan 9 in the balancing section 3, the air volume of the second induced draft fan 8 in the drying section 2 is larger than that of the first induced draft fan 7 in the preheating section 1, the tail gas of the balancing section 3 is circulated to the preheating section 1 after improvement, so that the heat contained in the air volume in the balancing section 3 is recycled, the air inlet temperature of the first heat exchanger 14 in the preheating section 1 is increased to 65-75 ℃ (winter and summer) from room temperature, and in the actual operation process, the temperature range of hot air in the preheating section 1 needs to be controlled to be 80-90 ℃, so that steam is greatly saved.

In addition, the total flow of the tail gas is reduced, and the flowing gas velocity of the tail gas is reduced to a greater extent under the condition that the sectional area is not changed, so that the effect of the spray absorption tower 23 on absorbing the tail gas is improved, and the load of the formaldehyde retreatment process is reduced.

Claims (10)

1. The utility model provides a desicator is used in amino molding plastic production, a serial communication port, including preheating section (1), drying section (2) and the balance section (3) that set gradually, preheating section (1) is connected with first draught fan (7) through first induced duct (4), first draught fan (7) be used for with gas in preheating section (1) is taken out and is carried out the aftertreatment, drying section (2) are connected with second draught fan (8) through second induced duct (5), second draught fan (8) be used for with gas in drying section (2) is taken out and is carried out the aftertreatment, balance section (3) are connected with third draught fan (9) through third induced duct (6), the exit end of third draught fan (9) through third blast pipe (12) with preheating section (1) is linked together.

2. The drier for amino molding compound production according to claim 1, wherein a plurality of first heat exchangers (14) are arranged on the outer side wall of the preheating section (1), a plurality of branch pipes (17) are arranged at intervals at one end of the third blast pipe (12) far away from the third induced draft fan (9), and the branch pipes (17) are connected with the first heat exchangers (14) in a one-to-one correspondence manner.

3. The amino molding compound production dryer as claimed in claim 2, wherein fresh air inlets (18) are formed in the side surfaces of the first heat exchanger (14), and filter screens (19) are arranged at the positions of the fresh air inlets (18).

4. The amino molding compound production dryer according to claim 3, characterized in that a plurality of first exhaust fans (20) are arranged on the outer surface of the top of the preheating section (1), a plurality of second exhaust fans (21) are arranged on the outer surface of the top of the drying section (2), a plurality of third exhaust fans (22) are arranged on the outer surface of the top of the balancing section (3), a plurality of second heat exchangers (15) are arranged on the outer side wall of the drying section (2), a plurality of third heat exchangers (16) are arranged on the outer side wall of the balancing section (3), the first exhaust fans (20) are connected with the first heat exchangers (14) in a one-to-one correspondence manner, the second exhaust fans (21) are connected with the second heat exchangers (15) in a one-to-one manner, and the third exhaust fans (22) are connected with the third heat exchangers (16) in a.

5. The drier for amino molding compound production according to claim 4, wherein the outlet end of the first induced draft fan (7) and the outlet end of the second induced draft fan (8) are respectively communicated with a gas collection cabinet (13) through a first blast pipe (10) and a second blast pipe (11), and a spray absorption tower (23) is arranged in the gas collection cabinet (13) and is used for absorbing tail gas containing formaldehyde.

6. The amino molding compound production dryer as claimed in claim 5, characterized in that the amino molding compound production dryer further comprises a cooling section (24), the cooling section (24) is located on the side of the balancing section (3) away from the drying section (2), and a cold air exhaust fan (25) is arranged on the cooling section (24) and is used for sucking the gas which is not absorbed by the spray absorption tower (23) in the gas collection cabinet (13).

7. The drier for amino molding compound production according to claim 6, wherein a first transition section (26) is provided between the preheating section (1) and the drying section (2), and a second transition section (27) is provided between the drying section (2) and the balancing section (3).

8. The amino molding compound production dryer as claimed in claim 7, characterized in that a mesh belt (28) is arranged in the amino molding compound production dryer for conveying material from the preheating section (1) to the cooling section (24).

9. The amino molding compound production dryer of claim 8, wherein the mesh belt (28) comprises three sections, the first transition joint (26) is arranged between the first section and the second section of the mesh belt (28), the second transition joint (27) is arranged between the second section and the third section of the mesh belt (28), and the advancing speed of the mesh belt (28) along the material conveying direction is increased in sequence.

10. The amino molding compound production dryer according to any one of claims 1-9, wherein the air volume of the first induced draft fan (7) is the same as the air volume of the third induced draft fan (9), and the air volume of the second induced draft fan (8) is greater than the air volume of the first induced draft fan (7).

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