CN211518776U

CN211518776U - Drying circulation device and compound machine

Info

Publication number: CN211518776U
Application number: CN201921970220.1U
Authority: CN
Inventors: 严翔; 简甦; 李步清
Original assignee: Verboca Energy Saving Technologies Co ltd
Current assignee: Verboca Energy Saving Technologies Co ltd
Priority date: 2019-11-14
Filing date: 2019-11-14
Publication date: 2020-09-18
Anticipated expiration: 2029-11-14

Abstract

The utility model discloses a dry circulating device and compounding machine relates to drying equipment technical field to solve to a certain extent among the prior art because the unable cyclic utilization of dry gas leads to dry speed to reduce and the extravagant technical problem of resource. The drying cycle device includes: the system comprises a first drying unit, a second drying unit, a main air supply unit, a gas collecting pipe and a main air exhaust unit; the main air supply unit is communicated with the air inlet end of the second drying unit and is used for conveying air into the second drying unit; the air exhaust end of the second drying unit is communicated with the main air exhaust unit through a gas collecting pipe; the air inlet end and the air exhaust end of the first drying unit and the air inlet end of the second drying unit are communicated with the gas collecting pipe.

Description

Drying circulation device and compound machine

Technical Field

The utility model relates to a drying equipment technical field especially relates to a dry circulating device and compounding machine.

Background

The compounding of the compounding machine is to adhere two or more layers of materials to each other with an adhesive. In the process, hot air is usually adopted to heat the composite material, so that the adhesive is evaporated and dried, and meanwhile, the solvent in the adhesive is taken away to volatilize. The same solvent volatilization amount, the smaller the total exhaust air volume, the smaller the operation energy consumption and the lower the rear-end treatment cost.

However, most of the drying processes in the prior art are that the air intake and the air exhaust are basically consistent, and the drying gas cannot circulate in the drying device, so that the heat is discharged under the condition of not being reasonably utilized, and the great waste of resources is caused.

Therefore, it is desirable to provide a drying cycle device to solve the problems of the prior art to some extent.

SUMMERY OF THE UTILITY MODEL

The utility model provides a dry circulating device and compounding machine to solve to a certain extent among the prior art because the unable cyclic utilization of dry gas in the drying device leads to dry speed to reduce and the extravagant technical problem of resource.

The utility model provides a drying cycle device, include: the system comprises a first drying unit, a second drying unit, a main air supply unit, a gas collecting pipe and a main air exhaust unit; the main air supply unit is communicated with an air inlet end of the second drying unit and is used for conveying air into the second drying unit; the air exhaust end of the second drying unit is communicated with the main air exhaust unit through the air collecting pipe; the air inlet end and the air exhaust end of the first drying unit and the air inlet end of the second drying unit are communicated with the gas collecting pipe.

The total air supply unit comprises a total air supply pipe, a total air supply machine and a total heater, wherein the total air supply machine and the total heater are sequentially arranged on the total air supply pipe along the air inlet direction.

Specifically, total exhaust unit includes total exhaust pipe and total exhaust fan, the collecting main with total exhaust pipe switches on mutually, total exhaust fan sets up on the total exhaust pipe for exhaust.

Further, the first drying unit comprises a first air supply pipe, a first air blower, a first exhaust pipe and a first exhaust fan; the first blower is arranged on the first air supply pipe, and an air outlet of the first air supply pipe is a first air supply outlet; the first exhaust fan is arranged on the first exhaust pipe, and an air inlet of the first exhaust pipe is a first exhaust port; the first air supply pipe is communicated with the gas collecting pipe, and the first exhaust pipe is communicated with the first air supply pipe through the gas collecting pipe.

Furthermore, the second drying unit comprises a second air supply pipe, a second air blower, a second exhaust pipe and a second exhaust fan; the second blower is arranged on the second air supply pipe, and an air outlet of the second air supply pipe is a second air supply outlet; the second exhaust fan is arranged on the second exhaust pipe, and the air inlet of the second exhaust pipe is a second air outlet; the main air supply pipe is communicated with the second air supply pipe, and the second exhaust pipe is communicated with the second air supply pipe through the gas collecting pipe.

The first air supply pipe is provided with a first heater, and the first heater is positioned between the first air feeder and the first air supply outlet and is used for heating air in the first air supply pipe; and a second heater is arranged on the second air supply pipe, is positioned between the second air feeder and the second air supply outlet and is used for heating the air in the second air supply pipe.

Specifically, the air supply pipe and/or the exhaust pipe of the first drying unit and the second drying unit are/is provided with a first regulating valve, and the first regulating valve is used for controlling the gas flow in the corresponding pipeline; the main air supply pipe is provided with a second regulating valve, the main exhaust pipe is provided with a concentration sensor, and the concentration sensor is used for monitoring the concentration information of the gas exhausted from the main exhaust pipe; the concentration sensor is electrically connected with the second regulating valve and used for regulating the opening degree of the second regulating valve according to the gas concentration information in the main exhaust pipe.

The drying circulating device provided by the utility model also comprises a third drying unit; the third drying unit comprises a third air supply pipe, a third air feeder, a third heater, a third regulating valve and a third exhaust pipe, wherein an air outlet of the third air supply pipe is a third air supply outlet, and an air inlet of the third exhaust pipe is a third exhaust outlet; the third blower and the third heater are sequentially arranged on the third air supply pipe; the third regulating valve is arranged on the third exhaust pipe; and the third exhaust pipe is communicated with the third air supply pipe, so that air can circulate in the third drying unit.

Compared with the prior art, the drying circulating device has the following advantages:

the utility model provides a drying circulation device because the dry gas that total air supply unit lets in can be at the circulation in first drying unit and the second drying unit, consequently effectively improves thermal utilization ratio, and the at utmost carries out the drying to the material.

In addition, the utility model also provides a compound machine, a plurality of drying ovens are arranged in sequence along the feeding direction, a feeding port and a discharging port are respectively arranged on two sides of each drying oven, and the discharging ports among the drying ovens are communicated with the feeding port; the gas in the drying circulating device circularly flows among the drying ovens; the materials to be dried can move along the direction from the feeding hole to the discharging hole and sequentially pass through the drying oven for drying treatment.

Specifically, the plurality of ovens comprises a first oven, a second oven and a plurality of third ovens; the first drying oven and the first drying unit are arranged correspondingly, and the first air supply outlet and the first exhaust outlet are positioned in the first drying oven; the second drying oven and the second drying unit are arranged correspondingly, and the second air supply outlet and the second air exhaust outlet are positioned in the second drying oven; the plurality of third drying ovens and the plurality of third drying units are arranged in a one-to-one correspondence mode, and the third air supply openings and the corresponding third air exhaust openings are located in the third drying ovens.

Compared with the prior art, the compound machine has the same advantages by being provided with the drying circulating device, and the description is omitted.

To summarize, the embodiment of the present invention provides a drying cycle device and a compound machine, which have the advantages of enabling the drying gas to be recycled in the drying unit and improving the energy utilization rate.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic view of an overall structure of a drying cycle apparatus according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a first drying unit and a second drying unit in a drying cycle device provided by an embodiment of the present invention.

In the figure: 1-a main blast pipe; 101-total blower; 102-total heater; 2-a gas collecting pipe; 3-a main exhaust duct; 301-general exhaust fan; 4-a first blast pipe; 401-a first blower; 402-a first heater; 403-a first air supply outlet; 5-a first exhaust duct; 501-a first exhaust fan; 502-first exhaust port; 6-a second air supply pipe; 601-a second blower; 602-a second heater; 603-a second air supply outlet; 7-a second exhaust duct; 701-a second exhaust fan; 702-a second air outlet; 8-a first regulating valve; 9-a second regulating valve; 10-a concentration sensor; 11-a third blast pipe; 1101-a third blower; 1102-a third heater; 1103-third supply-air outlet; 12-a third exhaust duct; 1201-third air outlet; 1202-third regulating valve; 13-automatic regulating valve; 14-a temperature sensor; 15-a pressure sensor; 16-a compound machine; 1601-a first oven; 1602-a second oven; 1603-third oven;

s-material advancing direction.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all the embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present application without making any creative effort, shall fall within the protection scope of the present application.

In the description of the embodiments of the present application, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, or orientations or positional relationships that are conventionally placed when the products of the present invention are used, and are only used for convenience of description and simplification of the description, but do not indicate or imply that the devices or elements indicated must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are required to be absolutely horizontal or pendant, but rather may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the embodiments of the present application, it should also be noted that, unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically 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.

As used herein, the term "and/or" includes any one of the associated listed items and any combination of any two or more of the items.

For ease of description, spatial relationship terms such as "above … …," "upper," "below … …," and "lower" may be used herein to describe one element's relationship to another element as illustrated in the figures. Such spatial relationship terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures.

The terminology used herein is for the purpose of describing various examples only and is not intended to be limiting of the disclosure. The singular forms also are intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises," "comprising," and "having" specify the presence of stated features, quantities, operations, elements, components, and/or combinations thereof, but do not preclude the presence or addition of one or more other features, quantities, operations, components, elements, and/or combinations thereof.

Variations from the shapes of the illustrations as a result, for example, of manufacturing techniques and/or tolerances, may be expected. Thus, the examples described herein are not limited to the particular shapes shown in the drawings, but include changes in shape that occur during manufacturing.

The features of the examples described herein may be combined in various ways that will be apparent after understanding the disclosure of the present application. Further, while the examples described herein have a variety of configurations, other configurations are possible, as will be apparent after understanding the disclosure of the present application. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present application.

Fig. 1 is a schematic view of an overall structure of a hot air drying circulation device according to an embodiment of the present invention; fig. 2 is a schematic structural diagram of the first drying unit and the second drying unit in the hot air drying circulation device provided by the embodiment of the present invention.

As shown in fig. 1 and fig. 2, the utility model provides a hot air drying circulation device, include: the system comprises a first drying unit, a second drying unit, a main air supply unit, a gas collecting pipe 2 and a main air exhaust unit; the main air supply unit is communicated with the air inlet end of the second drying unit and is used for conveying air into the second drying unit; the main exhaust unit is communicated with the gas collecting pipe 2 and used for exhausting gas; the air inlet end and the air outlet end of the first drying unit and the air inlet end of the second drying unit are communicated with the gas collecting pipe 2.

The air sent by the main air supply unit enters the second drying unit from the air inlet end of the second drying unit for drying and is discharged into the gas collecting pipe 2 from the air exhaust end. And part of the gas entering the gas collecting pipe 2 circulates again to enter the second drying unit, and part of the gas enters the first drying unit from the air inlet end of the first drying unit for drying and is discharged into the gas collecting pipe 2 from the air exhaust end of the first drying unit. And part of the gas entering the gas collecting pipe 2 is circulated again to enter the first drying unit, and part of the gas is exhausted from the main exhaust pipe 3.

When the concentration sensor 10 detects that the concentration of the gas exhausted from the main exhaust duct 3 is low, the main air supply unit is controlled to reduce the amount of the gas to be fed, so that the amounts of the circulating gas in the first drying unit and the second drying unit can be increased, and the amount of the gas to be fed is reduced, so that the pressure sensor 15 detects the pressure change, and the exhaust amount of the main exhaust fan 301 is controlled to be reduced to maintain the pressure unchanged, thereby improving the concentration of the exhausted gas.

When the concentration sensor 10 detects that the concentration of the gas exhausted from the main exhaust duct 3 is higher, the main air supply unit is controlled to increase the amount of the gas to be fed, so that the amount of the circulating gas in the first drying unit and the second drying unit can be reduced, and the amount of the gas to be fed is increased, so that the pressure sensor 15 detects the pressure change, and the exhaust amount of the main exhaust fan 301 is controlled to increase to maintain the pressure, so that the concentration of the exhausted gas can be reduced.

In addition, the circulation of the gas also absorbs part of the gas in the oven. Therefore, negative pressure can be generated in the oven, and the problem that drying gas in the oven diffuses outdoors to cause pollution can be avoided to a certain extent.

In the drying cycle apparatus of the present invention, the air blowing amounts of the first blower 401 and the second blower 601 are the same and smaller than the air blowing amounts of the first exhaust blower 501 and the second exhaust blower 701. Therefore, part of the gas in the gas collecting pipe can be circulated into the first drying unit, and part of the gas flows into the second drying unit. Since the discharge air volume of the first exhaust fan 501 is larger than the supply air volume of the first blower 401, the discharge air volume of the second exhaust fan 701 is larger than the supply air volume of the second blower 601. Therefore, negative pressure can be generated in the first drying unit and the second drying unit, so that air in the compound machine can be absorbed and enters the circulating pipeline, and dry waste air is guaranteed to be discharged from the main exhaust unit all the time.

According to the law of dalton evaporation: w ═ C (E-E)/P.

Wherein W is the liquid level evaporation rate; (E-E) is the saturation difference of air, wherein E is the saturated vapor pressure at the liquid surface temperature, and E is the actual vapor pressure of air above the liquid surface; p is air pressure; c is a proportionality coefficient related to wind speed, and a specific numerical value needs to be determined through experiments, namely a series of evaporation rates are determined at different wind speeds, and then the C value is determined by a statistical method at different wind speeds. The concentration of solvent in the oven cannot exceed 25% LEL due to safety requirements, taking the example of ethyl acetate, values of E and E at various temperatures.

When the drying temperature is 60 ℃ and the concentration is 0, W1 ═ C (55834-0)/P ═ 55837 ═ C/P is known;

when the drying temperature is 60 ℃ and the concentration is 25% LEL, W2 ═ C (55834-547)/P ═ 55287 ═ C/P is known;

when the drying temperature is 65 ℃ and the concentration is 25% LEL, W3 ═ C (66969-;

from (W2-W1)/W1 being 0.98%, the change in concentration had a very slight effect on the evaporation rate;

from (W3-W2)/W2 being 20%, it is known that the change in temperature has a significant effect on the evaporation rate.

The wind speed is in direct proportion to the wind quantity, and according to the formula, the wind quantity is also in direct proportion to the evaporation rate. Therefore, to control the drying rate, the drying temperature and air volume of each oven should be precisely controlled, and the temperature and air volume are not changed with the concentration change.

From the above analysis, it is found that when the gas is circulated and dried in the drying unit, the drying rate is not significantly affected even if the concentration of the circulated gas is gradually increased. Therefore, the air inlet end of the main air supply unit is communicated with the air inlet end of the second drying unit, air enters the second drying unit through the main air supply unit, and enters the air collecting pipe 2 from the air exhaust end of the second drying unit after being dried in the second drying unit. Because the air inlet end of the second drying unit and the air inlet end of the first drying unit are communicated with the air collecting pipe 2, one part of air circulates in the second drying unit, the other part of air enters the first drying unit for drying, the air dried in the first drying unit enters the air collecting pipe 2 from the air exhaust end of the first drying unit, one part of air is exhausted through the main air exhaust unit, and the other part of air enters the first drying unit again for circulating drying.

When the concentration of the discharged gas is about to reach a preset value, the main air inlet unit is controlled to increase the air inlet amount, so that the concentration of the gas in the circulating pipeline is reduced. When the gas concentration is low, the total air inlet unit is controlled to reduce the air inlet amount, so that the gas concentration in the circulating pipeline is improved.

Because the air intake and the air discharge in the first drying unit and the second drying unit are not changed, the air discharge of the total air discharge unit can be always ensured to be minimum under different solvent volatilization volumes, thereby reducing the cost of waste gas treatment.

As shown in fig. 1 and fig. 2, the main air supply unit includes a main air supply pipe 1, a main air supply machine 101 and a main heater 102, and the main air supply machine 101 and the main heater 102 are sequentially arranged on the main air supply pipe 1 along an air inlet direction for conveying heated air; the main exhaust unit comprises a main exhaust pipe 3 and a main exhaust fan 301, the gas collecting pipe 2 is communicated with the main exhaust pipe 3, and the gas collecting pipe 2 is respectively communicated with the first drying unit and the second drying unit; the main exhaust fan 301 is provided on the main exhaust duct 3 for exhausting gas.

The outside air enters the main air supply pipe 1 under the action of the main air supply blower 101, and is preheated by the main heater 102 to form preheated air, and the preheated air enters the first drying unit and the second drying unit to be dried, because the first drying unit and the second drying unit are communicated through the air collecting pipe 2, and the total air exhaust amount is less than the total amount of the circulating air in the drying circulating device. Therefore, most of drying gas can dry materials in the first drying unit and the internal circulation of the second drying unit, and then the utilization rate of the drying gas can be greatly improved, so that the energy loss is reduced.

Specifically, as shown in fig. 1 in conjunction with fig. 2, the air intake end of the first drying unit includes a first air supply pipe 4 and a first blower 401, and the air exhaust end of the first drying unit includes a first air exhaust pipe 5 and a first air exhaust fan 501; the first blower 401 is arranged on the first air supply pipe 4, and the first exhaust fan 501 is arranged on the first exhaust pipe 5; the first air supply pipe 4 and the first exhaust pipe 5 are communicated with the gas collecting pipe 2, so that gas can circulate in the first drying unit and the second drying unit; the air supply end of the first air supply pipe 4 forms a first air supply opening 403 for supplying air in the first air supply pipe 4, and the air inlet end of the first exhaust pipe 5 forms a first exhaust opening 502 for absorbing air into the first exhaust pipe 5, so that air can circulate in the first drying unit.

A part of the air dried by the second drying unit enters the second exhaust pipe 7 through the second exhaust port 702 under the influence of the second exhaust fan 701, and the first air supply pipe 4 is communicated with the gas collecting pipe 2 because the second exhaust pipe 7 is communicated with the second air supply pipe 6 through the gas collecting pipe 2. Therefore, the second air supply pipe 6, the second exhaust pipe 7 and the first air supply pipe 4 can be communicated through the gas collecting pipe 2.

Therefore, a part of the dry air introduced into the second exhaust duct 7 is recirculated into the second oven 1602 by the influence of the second blower 601, and a part of the dry air is introduced into the first air supply duct 4 by the influence of the first blower 401, heated by the first heater 402, and introduced into the first oven 1601 through the first air supply opening 403 to perform a drying operation.

The dried gas enters the first exhaust duct 5 from the first exhaust port 502 under the influence of the first exhaust fan 501. Because the first exhaust duct 5 is communicated with the gas collecting duct 2, the second air supply duct 6, the second exhaust duct 7, the first air supply duct 4 and the first exhaust duct 5 are communicated with each other. Therefore, a part of the gas entering the first exhaust duct 5 is influenced by the first blower 401 to circulate again into the first oven 1601, a part of the gas is influenced by the second blower 601 to circulate into the second oven 1602, and a part of the gas is influenced by the main exhaust duct 301 to be exhausted through the main exhaust duct 3.

Thus, the circulation of the gas within the first drying unit and the second drying unit and between the first drying unit and the second drying unit is performed by the self-circulation of the gas. The drying effect is guaranteed, meanwhile, the drying gas can be utilized to the maximum degree, and the energy consumption of heating the drying gas through the heater is reduced.

It should be added to the description here that, in the drying cycle device provided by the present invention, the output air volume of the first blower 401, the first exhaust blower 501, the second blower 601, and the second exhaust blower 701 is a fixed value, so that the stability of the gas circulation in the whole pipeline can be ensured, the stability of the negative pressure in the first drying unit and the second drying unit is ensured, and the drying rate is further ensured.

Specifically, as shown in fig. 1 and fig. 2, the air inlet end of the second drying unit includes a second air supply pipe 6 and a second blower 601, and the air outlet end of the second drying unit includes a second air exhaust pipe 7 and a second air exhaust fan 701; the second blower 601 is arranged on the second air supply pipe 6, and the second exhaust fan 701 is arranged on the second exhaust pipe 7; the main air supply pipe 1 is communicated with the second air supply pipe 6, the second exhaust pipe 7 is communicated with the second air supply pipe 6 through the gas collecting pipe 2, the air supply end of the second air supply pipe 6 forms a second air supply opening 603 used for supplying air in the second air supply pipe 6, and the air inlet end of the second exhaust pipe 7 forms a second air exhaust opening 702 used for absorbing air into the second exhaust pipe 7 so that the air can circulate in the second drying unit.

When the drying operation is performed, the external air enters the main air supply pipe 1 under the action of the main air supply blower 101, and is preheated by the main heater 102 to form preheated air, because the main air supply pipe 1 is communicated with the second air supply pipe 6, and the second air supply pipe 6 is provided with the second air supply blower 601 and the second heater 602. Therefore, the preheated gas enters the second air supply duct 6 under the influence of the second air blower 601, is reheated by the second heater 602, and then enters the second oven 1602 through the second air supply opening 603, thereby performing the drying operation of the material.

The dried air enters the second exhaust pipe 7 through the second exhaust port 702 under the influence of the second exhaust fan 701, because the second exhaust pipe 7 is communicated with the second air supply pipe 6 through the gas collecting pipe 2, and the first drying unit is communicated with the gas collecting pipe 2. Therefore, a part of the drying air entering the second exhaust duct 7 is influenced by the second blower 601 to circulate into the second oven 1602 again, and a part of the drying air enters the first drying unit to perform the drying operation.

The drying gas can be utilized to the maximum extent by the self-circulation of the first drying means and the circulation with the second drying means.

Further, as shown in fig. 1 and fig. 2, a first heater 402 is disposed on the first air supply pipe 4, and the first heater 402 is located between the first blower 401 and the first air supply outlet 403, and is used for heating the air in the first air supply pipe 4; the second air supply pipe 6 is provided with a second heater 602, and the second heater 602 is located between the second blower 601 and the second air supply outlet 603, and is used for heating the gas in the second air supply pipe 6.

The temperature of the gas entering the first oven 1601 and the second oven 1602 can be ensured by providing the first heater 402 and the second heater 602. In addition, since the gas can be recycled in the pipeline, the first heater 402 and the second heater 602 only need to output small power to ensure the temperature of the drying gas, thereby reducing the energy loss.

It should be noted that, since the gas in the pipeline is heated many times during the continuous circulation process, the gas is always circulated from the first drying unit to the second drying unit. Therefore, in the drying cycle apparatus provided by the present invention, the temperature sensor 14 is additionally provided on the first air supply pipe 4 between the first heater 402 and the first air supply opening 403, the automatic regulating valve 13 is additionally provided on the first air supply pipe 4 between the first air blower 401 and the gas collecting pipe 2, and the temperature sensor 14 is electrically connected to the automatic regulating valve 13.

When the gas heated by the first heater 402 exceeds the preset temperature range, the temperature sensor 14 can control the automatic regulating valve 13 to open, so that the external air enters the first air supply pipe 4, and the temperature of the gas in the first air supply pipe 4 is further reduced. The gas temperature in the whole pipeline is ensured, and the use safety is improved.

Furthermore, as shown in fig. 1 and fig. 2, a plurality of first adjusting valves 8 are further disposed on the air supply pipes and/or the air exhaust pipes of the first drying unit and the second drying unit, and the first adjusting valves 8 are used for controlling the air flow in the first drying unit and the second drying unit.

The first regulating valve 8 is arranged on a pipeline between the gas collecting pipe 2 and each fan. Because the temperature, humidity and atmospheric pressure of installation place's environment difference such as, consequently, need set for the output amount of wind of each fan in first drying unit and the second drying unit according to external environment. Through a plurality of first governing valves 8 that set up in first drying unit and second drying unit, can convenient and fast adjust the output amount of wind to optimum condition according to the environment.

It should be noted that, in the drying cycle apparatus provided in the present application, after the air volume is adjusted to the optimum air volume by the first adjusting valve 8, the output air volume of each fan in the first drying unit and the second drying unit does not need to be adjusted again in the subsequent operation process.

Furthermore, as shown in fig. 1 and fig. 2, the main air supply pipe 1 is provided with a second regulating valve 9, the main exhaust pipe 3 is provided with a concentration sensor 10, and the concentration sensor 10 is used for monitoring the gas concentration information in the main exhaust pipe 3; the concentration sensor 10 is electrically connected with the second regulating valve 9 and is used for adjusting the opening degree of the second regulating valve 9 according to the gas concentration information in the main exhaust duct 3.

Through the monitoring to the concentration of the gaseous stoving of total exhaust pipe 3 exhaust, and then control the intake of total forced draught blower, can change the intake according to the stoving state of difference constantly, on the one hand, it is faster to total forced draught blower 101's control response, and on the other hand has reduced the error of manual adjustment, makes stoving control more accurate.

It should be added that a pressure sensor 15 is disposed on the main exhaust duct 3 between the main exhaust fan 301 and the gas collecting duct 2, and the pressure sensor 15 is electrically connected to the main exhaust fan 301 and is used for changing the exhaust volume of the main exhaust fan 301 according to the change of different pressures.

When the volatilization amount of the solvent in the material is reduced and the concentration sensor 10 detects that the concentration is low, the total blower 101 is controlled to reduce the total air supply amount, and the air amount of other blowers is unchanged. At this time, the self-circulation air volume in the first drying unit increases, the self-circulation air volume in the second drying unit increases, the pressure sensor 15 in front of the main exhaust fan 301 detects a pressure change, and the main exhaust fan 301 is controlled to reduce the exhaust air volume so as to increase the exhaust concentration in order to maintain the pressure unchanged.

When the solvent volatilization amount in the material is increased and the concentration sensor 10 detects that the concentration is higher, the total blower 101 is controlled to increase the total air supply amount, and the air amount of other blowers is unchanged. At this time, the self-circulation air volume in the first drying unit is reduced, the self-circulation air volume in the second drying unit is reduced, the pressure sensor 15 in front of the main exhaust fan 301 detects the pressure change, and the main exhaust fan 301 is controlled to increase the exhaust air volume so as to reduce the exhaust concentration in order to maintain the pressure unchanged.

Wherein, as shown in fig. 1, the drying cycle device provided by the utility model also comprises a plurality of third drying units; the plurality of third drying units include a third blowing duct 11, a third blower 1101, a third heater 1102, a third regulating valve 1202, and a third exhaust duct 12; the third blower 1101 and the third heater 1102 are sequentially arranged on the third blast pipe 11, the air supply end of the third blast pipe 11 forms a third air supply outlet 1103, and the third heater 1102 is positioned between the third blower 1101 and the third air supply outlet 1103; the third adjusting valve 1202 is disposed on the third exhaust duct 12, an air inlet end of the third exhaust duct 12 forms a third exhaust outlet 1201, and the third exhaust duct 12 is communicated with the third air supply duct 11, so that air can circulate inside the third drying unit.

In order to ensure the drying effect, the drying cycle device provided by the present application is provided with a plurality of third drying units, the gas in the third drying units enters the third oven 1603 through the third blowers 1101 to the third heater 1102 and the third blowing port 1103, the gas for drying materials in the oven enters the third exhaust duct 12 through the third exhaust port 1201 and circulates into the third oven 1603 again under the action of the third blowers 1101, so that the gas can self-circulate in the third drying units.

Because negative pressure is generated when the gas in the first drying unit and the second drying unit circulates, the volatile solvent remained in the third drying unit is sucked into the first drying unit or the second drying unit by the negative pressure and is circularly discharged.

It should be added here that, as shown in fig. 1, the number of the third drying units in the present application is two, and the two third drying units have the same structure. But not limited to, two, the number of the third drying units of the self-circulation is set according to the drying environment and the requirement.

The output air quantity of the fan is adjusted through the adjusting valve arranged in the application, and the function of adjusting the output air quantity of each fan through the frequency converter can be controlled.

In addition, as shown in fig. 1, the present invention further provides a compound machine 16, which comprises the above-mentioned drying cycle device and a plurality of ovens; the multiple drying ovens are sequentially arranged along the feeding direction, the two sides of each drying oven are provided with a feeding hole and a discharging hole, and the discharging holes among the multiple drying ovens are communicated with the feeding holes; the material to be dried can advance along the direction from the feeding hole to the discharging hole and sequentially passes through the drying oven to be dried.

During the drying operation, the material to be dried moves along the material advancing direction S, enters from the feeding port of the first oven 1601, moves to the feeding port of the second oven 1602 through the discharging port of the first oven 1601, and moves to the feeding port of the third oven 1603 through the discharging port of the second oven 1602 until moving out of the compound machine 16. In the process, the materials are dried by the second drying unit, then dried by the first drying unit, and finally dried by the third drying units.

Since the ovens in the composite machine 16 are provided with the inlet and the outlet, the negative pressure in the first drying unit and the second drying unit can cause the gas in the third drying units and the third ovens 1603 to be sucked into the first drying unit and the second drying unit and further to be discharged out of the overall circulation pipeline.

Wherein the plurality of ovens comprises a first oven 1601, a second oven 1602 and a plurality of third ovens 1603 as shown in fig. 1; the first oven 1601 is arranged corresponding to the first drying unit, and the first air supply opening 403 and the first air exhaust opening 502 are located in the first oven 1601; the second oven 1602 and the second drying unit are arranged correspondingly, and the second air supply outlet 603 and the second air exhaust outlet 702 are located in the second oven 1602; the plurality of third ovens 1603 and the plurality of third drying units are arranged in one-to-one correspondence, and the third supply air outlet 1103 and the corresponding third exhaust outlet 1201 are located in the third ovens 1603.

The drying oven and the drying units can ensure that the drying process is stably and continuously carried out relatively, and the drying ovens and the drying units cannot be influenced mutually, so that the drying effect is ensured.

The above is only a preferred embodiment of the present invention, and should not be limited to the present invention, and any modification, equivalent replacement, and transformation made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A drying cycle apparatus, comprising: the system comprises a first drying unit, a second drying unit, a main air supply unit, a gas collecting pipe and a main air exhaust unit;

the main air supply unit is communicated with an air inlet end of the second drying unit and is used for conveying air into the second drying unit; the air exhaust end of the second drying unit is communicated with the main air exhaust unit through the air collecting pipe;

the air inlet end and the air exhaust end of the first drying unit and the air inlet end of the second drying unit are communicated with the gas collecting pipe.

2. The drying cycle apparatus as claimed in claim 1, wherein the main blower unit includes a main blower pipe, a main blower and a main heater, and the main blower and the main heater are sequentially disposed on the main blower pipe along an air intake direction.

3. The drying cycle apparatus according to claim 2, wherein the main exhaust unit includes a main exhaust duct and a main exhaust fan, the main exhaust duct is in communication with the main exhaust duct, and the main exhaust fan is disposed on the main exhaust duct for exhausting the gas.

4. The drying cycle apparatus according to claim 3, wherein the first drying unit includes a first blast duct, a first blower, and a first exhaust duct and a first exhaust fan;

the first blower is arranged on the first air supply pipe, and an air outlet of the first air supply pipe is a first air supply outlet; the first exhaust fan is arranged on the first exhaust pipe, and an air inlet of the first exhaust pipe is a first exhaust port;

the first air supply pipe is communicated with the gas collecting pipe, and the first exhaust pipe is communicated with the first air supply pipe through the gas collecting pipe.

5. The drying cycle apparatus according to claim 4, wherein the second drying unit includes a second blast pipe, a second blower, and a second exhaust duct and a second exhaust fan;

the second blower is arranged on the second air supply pipe, and an air outlet of the second air supply pipe is a second air supply outlet; the second exhaust fan is arranged on the second exhaust pipe, and the air inlet of the second exhaust pipe is a second air outlet;

the main air supply pipe is communicated with the second air supply pipe, and the second exhaust pipe is communicated with the second air supply pipe through the gas collecting pipe.

6. The drying cycle apparatus as claimed in claim 5, wherein a first heater is provided on the first air supply pipe, and the first heater is located between the first blower and the first air supply outlet, and is configured to heat the air in the first air supply pipe;

and a second heater is arranged on the second air supply pipe, is positioned between the second air feeder and the second air supply outlet and is used for heating the air in the second air supply pipe.

7. The drying cycle apparatus of claim 6, wherein the supply pipe and/or the exhaust pipe of the first drying unit and the second drying unit are provided with first adjusting valves, and the first adjusting valves are used for controlling the gas flow in the corresponding pipelines;

the main air supply pipe is provided with a second regulating valve, the main exhaust pipe is provided with a concentration sensor, and the concentration sensor is used for monitoring the concentration information of the gas exhausted from the main exhaust pipe;

the concentration sensor is electrically connected with the second regulating valve and used for regulating the opening degree of the second regulating valve according to the gas concentration information in the main exhaust pipe.

8. The drying cycle apparatus of claim 7, further comprising a third drying unit;

the third drying unit comprises a third air supply pipe, a third air feeder, a third heater, a third regulating valve and a third exhaust pipe, wherein an air outlet of the third air supply pipe is a third air supply outlet, and an air inlet of the third exhaust pipe is a third exhaust outlet;

the third blower and the third heater are sequentially arranged on the third air supply pipe;

the third regulating valve is arranged on the third exhaust pipe; and the third exhaust pipe is communicated with the third air supply pipe, so that air can circulate in the third drying unit.

9. A compound machine comprising the drying cycle apparatus as set forth in claim 8 and a plurality of ovens;

the multiple drying ovens are sequentially arranged along the feeding direction, a feeding hole and a discharging hole are respectively formed in two sides of each drying oven, and the discharging holes among the multiple drying ovens are communicated with the feeding hole; the gas in the drying circulating device circularly flows among the drying ovens;

the materials to be dried can move along the direction from the feeding hole to the discharging hole and sequentially pass through the drying oven for drying treatment.

10. The compound machine as recited in claim 9, wherein the plurality of ovens comprises a first oven, a second oven, and a plurality of third ovens;

the first drying oven and the first drying unit are arranged correspondingly, and the first air supply outlet and the first exhaust outlet are positioned in the first drying oven;

the second drying oven and the second drying unit are arranged correspondingly, and the second air supply outlet and the second air exhaust outlet are positioned in the second drying oven;

the plurality of third drying ovens and the plurality of third drying units are arranged in a one-to-one correspondence mode, and the third air supply openings and the corresponding third air exhaust openings are located in the third drying ovens.