CN216159580U

CN216159580U - Drying machine and drying exhaust system

Info

Publication number: CN216159580U
Application number: CN202122257203.7U
Authority: CN
Inventors: 蒋厚祥; 夏日炽; 陈雷; 汪熙童
Original assignee: Guangdong Phnix Environmental Protection Technology Co ltd
Current assignee: Guangdong Phnix Environmental Protection Technology Co ltd
Priority date: 2021-09-16
Filing date: 2021-09-16
Publication date: 2022-04-01
Anticipated expiration: 2031-09-16

Abstract

The utility model relates to the technical field of drying equipment, and particularly discloses a dryer and a drying exhaust system. The drying machine comprises an air supply device and an air exhaust device which are fixedly arranged, wherein the air supply device is used for inputting and heating air into the drying oven, the air exhaust device comprises a return air pipe, a sub air exhaust fan and an air exhaust pipe which are sequentially communicated, the air in the drying oven is sucked to the air exhaust pipe by the sub air exhaust fan after entering from the return air pipe, and the air exhaust pipe is used for guiding the air to be communicated to a main air exhaust fan. The drying machine can timely pump away the cooled and moist air and keep the air pressure in the drying oven balanced through the pumping of the sub-exhaust fans, and can also pump the air in each exhaust pipe through the main exhaust fan, so that the air of each drying machine can be uniformly exhausted, the energy consumption of the drying machine is reduced, the exhaust negative pressure of the drying machine is strong, the energy consumption is low, the drying efficiency and the exhaust efficiency are high, the exhaust of the drying oven is timely, and the operation safety is ensured.

Description

Drying machine and drying exhaust system

Technical Field

The application relates to the technical field of drying equipment, in particular to a dryer and a drying exhaust system.

Background

A production line of a general printing factory usually needs a plurality of printing dryers to be combined for drying operation, and in each production line, a total exhaust fan is arranged for exhaust treatment of each printing dryer, the total exhaust fan is connected to each printing dryer through an air pipe, and air in each printing dryer is sucked and exhausted by the total exhaust fan through the air pipe.

However, the negative pressure formed by distributing the negative pressure wind power of the total exhaust fan to each printing dryer is small, which affects the exhaust efficiency and causes untimely exhaust of the drying oven.

Moreover, because the lengths of the exhaust pipes connected to each printing dryer by the total exhaust fan are different, the negative pressure suction force of the total exhaust fan to each printing dryer is different, so that the number of exhaust rows of the printing dryer close to the total exhaust fan is large, and the number of exhaust rows of the printing dryer far away from the total exhaust fan is small. The printing dryer with much exhaust air can cause large energy consumption of the unit operation; the printing dryer with less exhaust air can lead the exhaust air to flow back into the oven, thus causing the increase of organic solvent in the oven and causing unsafe operation of the oven.

SUMMERY OF THE UTILITY MODEL

One object of an embodiment of the present invention is to: the utility model provides a dryer, it can solve among the prior art dryer exhaust that the negative pressure intensity of air is little, the inefficiency of airing exhaust and air exhaust untimely problem.

Another object of an embodiment of the present invention is to: the utility model provides a stoving exhaust system which can solve exist among the prior art and air exhaust inhomogeneous, the energy consumption is big and the unsafe problem of stoving operation.

In order to achieve the purpose, the following technical scheme is adopted in the application:

on one hand, the drying machine comprises an air supply device and an exhaust device which are fixedly arranged, wherein the air supply device is used for inputting and heating air into the drying oven, the exhaust device comprises a return air pipe, a sub exhaust fan and an exhaust pipe which are sequentially communicated, the air in the drying oven is sucked to the exhaust pipe by the sub exhaust fan after entering from the return air pipe, and the exhaust pipe is used for guiding the air to be communicated to a main exhaust fan.

As a preferable scheme of the dryer, the air return pipe comprises a first air return channel and a second air return channel which are communicated, the first air return channel is communicated with the oven and the exhaust pipe, and the second air return channel is communicated with the air supply device and the exhaust pipe.

As a preferable scheme of the dryer, the exhaust duct includes an exhaust air duct and a first exhaust port and a second exhaust port communicated with each other through the exhaust air duct, and the first return air duct and the second return air duct are both communicated to the exhaust air duct.

As a preferable scheme of the dryer, the sub exhaust fan is disposed between the first return air duct and the exhaust duct.

As a preferable scheme of the dryer, the position of the first air return duct is higher than a communication position of the air supply device and the oven.

As a preferable scheme of the dryer, the air supply device comprises a fresh air inlet, a heat exchange structure and an air supply outlet which are sequentially communicated, and air introduced from the fresh air inlet exchanges heat with the heat exchange structure and then is output into the dryer through the air supply outlet.

As a preferable scheme of the dryer, an air supply fan is arranged between the heat exchange structure and the air supply outlet.

As a preferable scheme of the dryer, the heat exchange structure is a condenser of a heat pump device.

On the other hand, the drying and air exhausting system comprises an oven, a total air exhausting fan and the dryer, wherein the air supply device and the return air pipe of the dryer are communicated into the oven respectively, and the air exhausting pipe of the dryer is communicated to the total air exhausting fan.

As a preferred scheme of the drying and air exhausting system, at least two dryers are sequentially arranged, a second air outlet of the former dryer is connected with a first air outlet of the next dryer, and the total air exhausting fan is connected with the first air outlet of the first dryer, or the total air exhausting fan is connected with the second air outlet of the last dryer.

The beneficial effect of this application does:

the drying machine is formed by the fixedly arranged air supply device and the air exhaust device, wherein the air supply device is used for inputting and heating air into the drying oven so as to dry the articles in the drying oven by the drying oven. The air exhaust device comprises an air return pipe, a sub air exhaust fan and an air exhaust pipe which are sequentially communicated, and the heated air can exchange heat with articles in the oven to be cooled and carry water vapor, so that the air pressure in the oven can also prevent the heated air from continuously entering. At the moment, the cooled and moist air in the oven can be sucked to the exhaust pipe from the return air pipe communicated into the oven and discharged out of the dryer through the suction of the sub exhaust fan, so that the cooled and moist air can be timely pumped away and the air pressure in the oven can be kept balanced. And because the exhaust pipe can guide air to communicate to the total air exhaust fan, can suck the air in each exhaust pipe through the total air exhaust fan, make the air of each drying-machine can be discharged evenly, reduce the energy consumption of the drying-machine. Thereby guarantee to continuously be supplied with high temperature and dry air in the oven, improve the drying efficiency and the efficiency of airing exhaust of oven, guarantee the operation safety.

Drawings

The present application will be described in further detail below with reference to the accompanying drawings and examples.

Fig. 1 is an isometric view of a dryer provided in an embodiment of the present application.

Fig. 2 is an installation schematic diagram of a dryer and a main exhaust fan according to an embodiment of the present application.

Fig. 3 is a schematic structural diagram of a drying exhaust system according to an embodiment of the present application.

Fig. 4 is an isometric view of a dryer provided in accordance with another embodiment of the present application.

Fig. 5 is an isometric view of a dryer provided in accordance with yet another embodiment of the present application.

Fig. 6 is a schematic view illustrating an installation of a dryer and a main exhaust fan according to another embodiment of the present application.

Fig. 7 is a schematic structural view of a drying exhaust system according to another embodiment of the present application.

In the figure:

1. a dryer; 11. an air supply device; 111. a fresh air port; 112. a heat exchange structure; 113. an air supply outlet; 114. an air supply fan; 12. an air exhaust device; 121. a return air duct; 1211. a first return air duct; 1212. a second air return duct; 122. a sub-exhaust fan; 123. an exhaust duct; 1231. an air exhaust duct; 1232. a first exhaust port; 1233. a second air outlet; 2. an oven; 3. a total exhaust fan.

Detailed Description

In order to make the technical problems solved, technical solutions adopted, and technical effects achieved by the present application clearer, the following describes technical solutions of embodiments of the present application in further detail, and it is obvious that the described embodiments are only a part of embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

In the description of the present application, unless otherwise expressly specified or limited, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

Referring to fig. 1, an embodiment of the present invention provides a dryer 1, including a fixed air supply device 11 and an air exhaust device 12, where the air supply device 11 is configured to input and heat air into an oven 2 (as shown in fig. 2 and fig. 3), the air exhaust device 12 includes an air return pipe 121, a sub air exhaust fan 122, and an air exhaust pipe 123 that are sequentially communicated, air in the oven 2 enters from the air return pipe 121 and is then sucked to the air exhaust pipe 123 by the sub air exhaust fan 122, and the air exhaust pipe 123 is configured to guide air to communicate with a main air exhaust fan 3.

In the embodiment of the present invention, the dryer 1 is formed by the air supply device 11 and the air exhaust device 12 which are fixedly arranged, wherein, referring to fig. 3, the air supply device 11 is used for inputting and heating air into the oven 2, so that the oven 2 can bake and dry the articles in the oven 2. The exhaust device 12 includes a return air pipe 121, a sub-exhaust fan 122 and an exhaust pipe 123 which are sequentially communicated, and since the heated air can exchange heat with the articles in the oven 2 to cool and carry water vapor, the air pressure in the oven 2 can also prevent the heated air from continuously entering. At this time, the air cooled and humidified in oven 2 can be sucked from return air pipe 121 leading into oven 2 to exhaust air pipe 123 to be exhausted out of dryer 1 by the suction of sub exhaust fan 122, and the cooled and humidified air can be timely exhausted and the air pressure in oven 2 can be kept balanced. And because the exhaust pipes 123 can guide air to be communicated to the total exhaust fan 3, the air in each exhaust pipe 123 can be sucked by the total exhaust fan 3, so that the air of each dryer 1 can be uniformly exhausted, and the energy consumption of the dryer 1 is reduced. Thereby guarantee to have high temperature and dry air in oven 2 continuously to supply with, improve oven 2's drying efficiency and the efficiency of airing exhaust, guarantee the operation safety.

Therefore, the dryer 1 provided by the embodiment of the utility model has the advantages of strong exhaust negative pressure, low energy consumption, high drying efficiency and exhaust efficiency, and ensures the operation safety by exhausting the air of the oven 2 in time.

In one embodiment, referring to fig. 4 and 5, the air return duct 121 includes a first air return duct 1211 and a second air return duct 1212, the first air return duct 1211 is communicated with the oven 2 and the exhaust duct 123, and air in the oven 2 can be sucked into the exhaust duct 123 by the sub-exhaust fan 122; the second air return channel 1212 is communicated with the air supply device 11 and the exhaust pipe 123, so that air in the exhaust pipe 123 can be communicated to the air supply device 11, the air supply device 11 heats the air from the oven 2 again, heat of the air in the oven 2 can be recovered, and energy consumption required by the air supply device 11 for heating the air is reduced.

Further, referring to fig. 4, the exhaust duct 123 includes an exhaust air duct 1231 and a first exhaust port 1232 and a second exhaust port 1233 communicated with each other through the exhaust air duct 1231, and both the first return air duct 1211 and the second return air duct 1212 are communicated with the exhaust air duct 1231, so that on one hand, exhaust air can be exhausted through the first exhaust port 1232 and the second exhaust port 1233, and the connectable angle between the dryer 1 and the total exhaust fan 3 is increased, on the other hand, the exhausted air can be concentrated in the exhaust air duct 1231, and the exhausted air can be conveniently exhausted from the first return air duct 1211 and recycled from the second return air duct 1212. Particularly, in the sequential adjacent connection of the plurality of dryers 1, the second air outlet 1233 of the previous dryer 1 is connected to the first air outlet 1232 of the next dryer 1, so that the air outlet channels 1231 between each of the dryers 1 are communicated, the heat of the exhaust air can be mutually recovered between the adjacent dryers 1, the time length of the air heated by the air supply device 11 is reduced, and the drying efficiency of the adjacent dryers 1 is further improved.

Further, referring to fig. 3, the sub-exhaust fan 122 is disposed between the first return air duct 1211 and the exhaust duct 123, so that the sub-exhaust fan 122 only draws air from the first return air duct 1211 into the exhaust duct 123, and air is prevented from being drawn from the second return air duct 1212 connected to the blower 11, thereby ensuring that the cooled humid air in the oven 2 can be exhausted in time.

Still further, referring to fig. 1, since the air follows the characteristics of expansion with heat and contraction with cold, the position of the first air return duct 1211 is higher than the communication position of the air supply device 11 and the oven 2, so that the high-temperature air output by the air supply device 11 can be released from the bottom, and the low-temperature air in the oven 2 can be lifted and stirred, and the low-temperature humid air can be driven to move to the first air return duct 1211 to be discharged while the temperature in the oven 2 is ensured to be uniformly increased.

Specifically, referring to fig. 4, air supply device 11 may include a fresh air inlet 111, a heat exchange structure 112, and an air supply outlet 113, which are sequentially communicated, air outside dryer 1 is introduced through fresh air inlet 111 and is heated by exchanging heat with heat exchange structure 112, the heated air is output to oven 2 through air supply outlet 113, and high-temperature and dry air may be continuously input from outside dryer 1.

Preferably, referring to fig. 5, an air supply fan 114 is disposed between the heat exchanging structure 112 and the air supply outlet 113, and the air supply fan 114 can suck the air at the fresh air inlet 111 to the heat exchanging structure 112 and deliver the air to the air supply outlet 113, so as to improve the heat exchanging efficiency between the external air and the heat exchanging structure 112 within a certain time and improve the input amount of the air within the time.

In the dryer 1 of the present invention, the heat exchanging structure 112 may be an electric heating rod, and the electric heating rod directly heats the air delivered from the fresh air inlet 111.

In another embodiment, the heat exchange structure 112 is a condenser (not shown in the figure) of a heat pump device, the heat pump device generally includes a compressor, a condenser, a throttle valve and an evaporator, during a heating process of the heat pump device, the evaporator absorbs external heat and heats a heat exchange medium in the evaporator, then the compressor outputs a high-temperature high-pressure gaseous heat exchange medium to the condenser, and the condenser releases heat to air introduced into the fresh air inlet 111, so as to achieve an effect of heating air. Then, the heat exchange medium after releasing the heat is changed into a low-temperature high-pressure liquid heat exchange medium, the low-temperature low-pressure liquid heat exchange medium is changed into a low-temperature low-pressure liquid heat exchange medium through the throttle valve, and then the low-temperature low-pressure liquid heat exchange medium returns to the evaporator to continuously absorb external heat for the next heating cycle, so that the heating efficiency is high. The air is heated by the condenser of the heat pump device, so that energy can be saved, the emission of pollutants such as carbon dioxide can be reduced, and the effects of energy conservation and emission reduction can be realized.

Referring to fig. 3 or fig. 7, an embodiment of the present invention further provides a drying and air exhausting system, including an oven 2, a total air exhausting fan 3, and the dryer 1 according to any one of the embodiments, wherein the air supply device 11 and the air return pipe 121 of the dryer 1 are respectively communicated to the oven 2, and the air exhaust pipe 123 of the dryer 1 is communicated to the total air exhausting fan 3. The dryer 1 in this embodiment may have the same structure and achieve the same effect as the dryer 1 in the above embodiment, and the description of this embodiment is omitted.

In particular, referring to fig. 6, the drying and air exhausting system according to the embodiment of the present invention includes at least two dryers 1 arranged in sequence, and the second air outlet 1233 of the previous dryer 1 is connected to the first air outlet 1232 of the next dryer 1, so that the air exhausting duct 1231 between each dryer 1 can be communicated, and the heat of the exhausted air can be mutually recovered between the adjacent dryers 1, thereby improving the drying efficiency of the adjacent dryers 1 and reducing the drying efficiency. The total air exhaust fan 3 is connected with the first air exhaust port 1232 of the dryer 1 located at the head position, or the total air exhaust fan 3 is connected with the second air exhaust port 1233 of the dryer 1 located at the tail position, so that the total air exhaust fan 3 can be connected with the dryer 1 at different positions, and the installation convenience of the total air exhaust fan 3 is improved.

In the description herein, it is to be understood that the terms "upper," "lower," "left," "right," and the like are used in an orientation or positional relationship merely for convenience in description and simplicity of operation, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the present application. Furthermore, the terms "first" and "second" are used merely for descriptive purposes and are not intended to have any special meaning.

In the description herein, references to the description of "an embodiment," "an example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be appropriately combined to form other embodiments as will be appreciated by those skilled in the art.

The technical principles of the present application have been described above in connection with specific embodiments. The description is made for the purpose of illustrating the principles of the present application and is not to be construed in any way as limiting the scope of the application. Based on the explanations herein, those skilled in the art will be able to conceive of other embodiments of the present application without inventive effort, which shall fall within the scope of the present application.

Claims

1. The drying machine is characterized by comprising an air supply device and an exhaust device which are fixedly arranged, wherein the air supply device is used for inputting and heating air into a drying oven, the exhaust device comprises a return air pipe, a sub exhaust fan and an exhaust pipe which are sequentially communicated, the air in the drying oven is sucked to the exhaust pipe by the sub exhaust fan after entering from the return air pipe, and the exhaust pipe is used for guiding the air to be communicated to a main exhaust fan.

2. The dryer of claim 1, wherein the return air duct comprises a first return air duct and a second return air duct, the first return air duct communicates with the oven and the exhaust duct, and the second return air duct communicates with the blowing device and the exhaust duct.

3. The dryer of claim 2, wherein said exhaust duct includes an exhaust duct and a first exhaust opening and a second exhaust opening communicating through said exhaust duct, said first return duct and said second return duct both communicating to said exhaust duct.

4. The dryer of claim 2, wherein said sub-exhaust fan is disposed between said first return air duct and said exhaust duct.

5. The dryer of claim 2, wherein the first return air duct is located at a position higher than a position where the blower device communicates with the oven.

6. The dryer of claim 1, wherein the air supply device comprises a fresh air inlet, a heat exchange structure and an air supply outlet which are sequentially communicated, and air introduced from the fresh air inlet is heat-exchanged with the heat exchange structure and then is output into the oven through the air supply outlet.

7. The dryer of claim 6, wherein an air supply fan is disposed between the heat exchange structure and the air supply outlet, and the air supply fan is configured to draw air after heat exchange with the heat exchange structure to the air supply outlet.

8. The dryer of claim 6 wherein said heat exchange structure is a condenser of a heat pump device.

9. A drying and air exhausting system is characterized by comprising an oven, a main air exhausting fan and the dryer of any one of claims 1 to 8, wherein the air supply device and the air return pipe of the dryer are communicated into the oven respectively, and the air exhaust pipe of the dryer is communicated to the main air exhausting fan.

10. The drying and air-exhausting system according to claim 9, wherein at least two dryers are arranged in sequence, the second air outlet of the former dryer is connected to the first air outlet of the next dryer, the total air-exhausting fan is connected to the first air outlet of the first dryer, or the total air-exhausting fan is connected to the second air outlet of the last dryer.