Steam conveying system and cut tobacco dryer

Abstract

The utility model relates to the technical field of cut tobacco processing, and provides a steam conveying system and a cut tobacco dryer. The first input end of the blowing-through device can be connected with the output end of the steam source, the steam source generates primary steam, and the output end of the blowing-through device can be connected with the input end of the dryer; the input end of the gas-liquid separator can be connected with the output end of the dryer and used for obtaining secondary steam and condensate water, the first output end of the gas-liquid separator can be connected with the second input end of the blowing-through device, and part of the secondary steam can enter the dryer through the blowing-through device and is used for obtaining condensate water. The second output end of the gas-liquid separator can be communicated with the condensate water main pipe and used for discharging condensate water. Therefore, condensate water in the dryer can be quickly discharged, the problem of uneven heating of the dryer is solved, and the processing quality and the processing consistency of tobacco shreds are improved.

Description

Technical Field

[0001] This utility model relates to the field of tobacco processing technology, and in particular to a steam conveying system and a tobacco drying machine. Background Technology

[0002] The moisture content of the tobacco shreds at the outlet is a crucial process indicator for the tobacco drying machine. Moisture content is controlled using a PID control method. The drying process primarily involves drying the drum wall, and the accuracy of drum wall temperature control significantly impacts the actual moisture content of the tobacco shreds at the outlet. During tobacco drying, the drum wall temperature is controlled jointly by a feedforward mathematical model and actual moisture feedback. A feedforward mathematical model is established using a series of parameters, including feed flow rate, feed moisture content, drying factor, and the setpoint for the moisture content of the tobacco shreds at the outlet. Actual moisture feedback is established using the actual moisture content and the setpoint for the tobacco shreds at the outlet as feedback values. These two parameters form a closed-loop control of the drum wall temperature, ensuring that the moisture content of the tobacco shreds at the outlet matches the setpoint.

[0003] However, during actual operation, the system cannot establish a rapid pressure field during the startup phase, and the condensate in the drum cannot be discharged quickly. Due to the uneven distribution and untimely discharge of condensate, there is a difference between the surface temperature of the thin plate and the displayed temperature, which affects the drying quality of the tobacco.

[0004] Therefore, there is an urgent need for a steam conveying system and a wire drying machine to solve the above-mentioned technical problems. Utility Model Content

[0005] The purpose of this invention is to provide a steam conveying system and a tobacco drying machine that can quickly drain the condensate in the dryer, solve the problem of uneven heating, and thus improve the processing quality and consistency of tobacco.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] Steam delivery system, including:

[0008] The blowing device has a first input end that can be connected to the output end of a steam source, which can generate primary steam. The output end of the blowing device can be connected to the input end of a dryer. Inside the dryer, part of the primary steam can be liquefied into condensate, and the other part can be converted into secondary steam. The temperature of the secondary steam is not higher than the temperature of the primary steam.

[0009] The gas-liquid separator has an input end that can be connected to the output end of the dryer to obtain the secondary steam and the condensate. The first output end of the gas-liquid separator can be connected to the second input end of the blowing device, and a portion of the secondary steam can enter the dryer through the blowing device. The second output end of the gas-liquid separator can be connected to the condensate main pipe to discharge the condensate.

[0010] As a preferred technical solution of the above-mentioned steam conveying system, the above-mentioned blowing device includes a mixing chamber, a throat and a diffuser chamber. The mixing chamber, the throat and the diffuser chamber are connected in sequence along the fluid flow direction. The cross-sectional area of ​​the flow channel of the mixing chamber and the cross-sectional area of ​​the flow channel of the diffuser chamber are both larger than the cross-sectional area of ​​the flow channel of the throat. The first input end and the second input end of the above-mentioned blowing device are connected to the mixing chamber. The fluid includes the above-mentioned primary steam and / or the above-mentioned secondary steam.

[0011] As a preferred technical solution of the above-mentioned steam conveying system, it also includes a first diaphragm valve, the output end of the steam source is connected to the first input end of the blowing device through the first diaphragm valve, and the first diaphragm valve is used to adjust the flow rate of the first-stage steam entering the blowing device.

[0012] As a preferred technical solution of the above-mentioned steam conveying system, it also includes a first pressure sensor and a second pressure sensor, which are respectively disposed at the output end and the input end of the first diaphragm valve.

[0013] As a preferred technical solution of the above-mentioned steam conveying system, it also includes a first filter, and the output end of the steam source is connected to the first input end of the blowing device through the first filter.

[0014] As a preferred technical solution of the above-mentioned steam conveying system, it also includes a first safety valve. The output end of the above-mentioned blowing device is connected to the input end of the above-mentioned dryer through the first safety valve, and the first-level steam and / or the second-level steam can be discharged outside the above-mentioned steam conveying system through the first safety valve.

[0015] As a preferred technical solution of the above-mentioned steam conveying system, a second safety valve is also included. The second safety valve is installed in the gas-liquid separator, and a portion of the secondary steam can be discharged from the steam conveying system through the second safety valve.

[0016] As a preferred technical solution of the above-mentioned steam conveying system, it also includes a steam trap pump, which is used to drive the condensate in the gas-liquid separator to flow to the condensate main pipe, and the steam source can provide the first-stage steam to drive the steam trap pump.

[0017] As a preferred technical solution of the above-mentioned steam conveying system, it further includes an input pipeline and an output pipeline. The input pipeline is connected in parallel with the blowing device between the steam source and the dryer. The primary steam enters the dryer through the input pipeline or the blowing device. The output pipeline is connected in parallel with the gas-liquid separator between the dryer and the condensate main pipe. The condensate enters the condensate main pipe through the output pipeline or the gas-liquid separator.

[0018] A wire drying machine is also provided, including the steam source, the condensate main pipe, the dryer, and the steam delivery system. The steam source can deliver the first-stage steam to the dryer through the blowing device, and the condensate in the dryer can be discharged to the condensate main pipe through the gas-liquid separator.

[0019] The beneficial effects of this utility model are:

[0020] This invention provides a steam conveying system, including a blowing device and a gas-liquid separator. The first input end of the blowing device can be connected to the output end of a steam source, which generates primary steam. The output end of the blowing device can be connected to the input end of a dryer. Inside the dryer, a portion of the primary steam liquefies into condensate, and the remainder is converted into secondary steam. The temperature of the secondary steam is not higher than that of the primary steam. The input end of the gas-liquid separator can be connected to the output end of the dryer to obtain the secondary steam and condensate. The first output end of the gas-liquid separator can be connected to the second input end of the blowing device, allowing some of the secondary steam to enter the dryer through the blowing device. The second output end of the gas-liquid separator can be connected to a condensate main pipe for discharging condensate.

[0021] Specifically, in the initial start-up phase, the steam source generates primary steam, which enters the dryer through a blowing device to provide heat to the material inside the dryer. During the heat release process, some of the primary steam liquefies into condensate, and some of the condensate forms on the side wall of the dryer. Some of the primary steam is converted into secondary steam. As the primary steam is introduced, some of the condensate and secondary steam enter the gas-liquid separator and are separated there. Some of the secondary steam in the gas-liquid separator can be passed into the blowing device and then back into the dryer, which reduces the pressure inside the gas-liquid separator, i.e., reduces the pressure at the output end of the dryer. This increases the pressure difference between the input and output ends of the dryer, causing the secondary steam and condensate inside the dryer to flow more towards the gas-liquid separator. This, in turn, makes it easier for the condensate hanging on the side wall of the dryer to flow into the gas-liquid separator, allowing the dryer to be heated evenly.

[0022] A tobacco drying machine is also provided, including a steam source, a condensate main pipe, a dryer, and a steam delivery system. The steam source can supply primary steam to the dryer through a blowing device, and the condensate in the dryer can be discharged to the condensate main pipe through a gas-liquid separator. This improves the quality of tobacco processing and provides processing consistency. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of this utility model and these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the steam conveying system provided in an embodiment of the present invention.

[0025] In the picture:

[0026] 2. Steam source; 3. Dryer; 4. Condensate main pipe;

[0027] 10. Blowing device;

[0028] 20. Gas-liquid separator;

[0029] 31. First diaphragm valve;

[0030] 41. First pressure sensor; 42. Second pressure sensor;

[0031] 61. First safety valve; 62. Second safety valve;

[0032] 71. Steam trap pump; 72. Balancing pipeline; 73. Drain pipeline;

[0033] 81. Input pipeline; 82. Output pipeline. Detailed Implementation

[0034] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0035] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0036] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0037] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0038] like Figure 1 As shown, this utility model provides a steam conveying system, including a blowing device 10 and a gas-liquid separator 20. The first input end of the blowing device 10 can be connected to the output end of a steam source 2, which generates primary steam. The output end of the blowing device 10 can be connected to the input end of a dryer 3. Inside the dryer 3, part of the primary steam liquefies into condensate, and the other part is converted into secondary steam. The temperature of the secondary steam is not higher than that of the primary steam. The input end of the gas-liquid separator 20 can be connected to the output end of the dryer 3 to obtain secondary steam and condensate. The first output end of the gas-liquid separator 20 can be connected to the second input end of the blowing device 10, allowing some of the secondary steam to enter the dryer 3 through the blowing device 10. The second output end of the gas-liquid separator 20 can be connected to a condensate main pipe 4 for discharging condensate.

[0039] Specifically, in the initial start-up stage, steam source 2 generates primary steam, which enters dryer 3 through blowing device 10 to provide heat to the material inside dryer 3. During the heat release process, part of the primary steam liquefies into condensate, and part of the condensate forms on the side wall of dryer 3. Part of the primary steam is converted into secondary steam. As the primary steam is introduced, part of the condensate and secondary steam enter gas-liquid separator 20 and are separated there. Part of the secondary steam in gas-liquid separator 20 can be introduced into blowing device 10 and then reintroduced into dryer 3, which reduces the pressure inside gas-liquid separator 20, i.e., reduces the pressure at the output end of dryer 3. This increases the pressure difference between the input end and the output end of dryer 3, causing the secondary steam and condensate inside dryer 3 to flow more towards gas-liquid separator 20. This makes it easier for the condensate hanging on the side wall of dryer 3 to flow into gas-liquid separator 20, allowing dryer 3 to be heated evenly.

[0040] Optionally, the blowing device 10 includes a mixing chamber, a throat, and a diffuser chamber, which are connected sequentially along the fluid flow direction. The cross-sectional area of ​​the flow channel of the mixing chamber and the cross-sectional area of ​​the flow channel of the diffuser chamber are both larger than the cross-sectional area of ​​the flow channel of the throat. The first input end and the second input end of the blowing device 10 are connected to the mixing chamber. The fluid includes primary steam and / or secondary steam.

[0041] Specifically, the blowing device 10 forms a Venturi structure through a mixing chamber, throat, and diffuser chamber with varying diameters. The primary steam produced by the steam source 2 has a high initial velocity and enters the mixing chamber and then the throat and diffuser chamber through the first input end of the blowing device 10. Due to the rapid flow of the primary steam, the gas pressure in the mixing chamber decreases, causing the secondary steam in the gas-liquid separator 20 to be drawn into the mixing chamber from the second input end of the blowing device 10. The primary steam and the secondary steam mix in the mixing chamber to form mixed steam, which flows together towards the throat and diffuser chamber. Because the secondary steam in the gas-liquid separator 20 is extracted by the blowing device 10, the gas pressure in the gas-liquid separator 20 decreases. Since the cross-sectional area of ​​the flow channel in the throat is smaller than that in the mixing chamber, the flow velocity of the mixed steam increases and the pressure decreases. Since the cross-sectional area of ​​the flow channel in the diffuser chamber is larger than that in the throat, the flow velocity of the mixed steam decreases and the pressure increases after entering the diffuser chamber from the throat. This results in a higher pressure at the input end of dryer 3 and a lower pressure at the output end. The increased pressure difference between the input and output ends of dryer 3 allows the secondary steam and condensate to enter the gas-liquid separator 20 more smoothly. The Venturi structure enables automatic circulation between the blowing device 10 and the gas-liquid separator 20.

[0042] Optionally, the steam delivery system also includes a first diaphragm valve 31, the output end of the steam source 2 is connected to the first input end of the blowing device 10 through the first diaphragm valve 31, and the first diaphragm valve 31 is used to regulate the flow rate of the primary steam entering the blowing device 10.

[0043] The first diaphragm valve 31 is a valve that controls fluids (liquid or gas) through the movement of a diaphragm. It mainly consists of a valve body, diaphragm, valve stem, and valve seat. Its working principle is based on the pressure difference between the upper and lower sides of the diaphragm, causing deformation and thus moving the valve stem to open or close the valve. In this embodiment, the opening degree of the first diaphragm valve 31 is calculated from parameters such as the inlet tobacco flow rate, inlet tobacco moisture content, drying factor, and the actual and set values ​​of the outlet tobacco moisture content. This is automatically controlled and adjusted by a PLC to ensure that the actual moisture content of the outlet tobacco remains stable within a certain deviation from the set value.

[0044] Optionally, the steam delivery system also includes a first pressure sensor 41 and a second pressure sensor 42, which are respectively located at the output end and input end of the first diaphragm valve 31.

[0045] In this embodiment, the first pressure sensor 41 and the second pressure sensor 42 are used to obtain the pressure values ​​of the first-stage steam at the input and output ends of the first diaphragm valve 31.

[0046] Optionally, the steam delivery system also includes a first filter, through which the output end of the steam source 2 is connected to the first input end of the blowing device 10. The first filter is used to filter the primary steam output from the steam source 2, allowing only the primary steam to pass through and intercepting other impurities carried in the primary steam.

[0047] Optionally, the steam delivery system also includes a first safety valve 61. The output end of the blowing device 10 is connected to the input end of the dryer 3 through the first safety valve 61, and primary steam and / or secondary steam can be discharged outside the steam delivery system through the first safety valve 61.

[0048] Normally, the first safety valve 61 is in a closed state. When the first safety valve 61 is closed, the primary steam and / or secondary steam discharged from the self-blowing device 10 all enter the dryer 3. However, when the pressure at the input end of the dryer 3 exceeds the first pressure threshold preset in the first safety valve 61, the first safety valve 61 opens, and some of the primary steam and / or secondary steam can be discharged through the first safety valve 61 to the outside of the steam conveying system for pressure relief.

[0049] Optionally, the steam delivery system also includes a second safety valve 62, which is installed in the gas-liquid separator 20, allowing a portion of the secondary steam to be discharged from the steam delivery system through the second safety valve 62.

[0050] Normally, the second safety valve 62 is in a closed state. When the second safety valve 62 is closed, the gas-liquid separator 20 is in a relatively sealed state. The secondary steam is stored in the gas-liquid separator 20 or enters the blow-through device 10, i.e., in the steam conveying system. When the pressure value in the gas-liquid separator 20 is greater than the preset second pressure threshold in the second safety valve 62, the second safety valve 62 opens, and some of the secondary steam can be discharged out of the steam conveying system through the second safety valve 62 to relieve pressure.

[0051] Optionally, the steam delivery system also includes a steam trap pump 71, which drives the condensate in the gas-liquid separator 20 to flow to the condensate main pipe 4. The steam source 2 can provide primary steam to the steam trap pump 71 to drive the steam trap pump 71.

[0052] Thus, by using a portion of the first-stage steam produced by steam source 2 to drive the steam trap pump 71, the participation of other driving sources can be reduced. When the steam trap pump 71 starts, it can actively extract the condensate in the gas-liquid separator 20, thereby further reducing the pressure in the gas-liquid separator 20 and increasing the pressure difference between the input and output ends of the dryer 3.

[0053] The working principle of the steam trap pump 71 is as follows: Initially, the inlet check valve opens, while the outlet check valve remains closed due to high back pressure, allowing water to enter the valve and the float to be at a low position. As the water level rises, the vent valve opens, and the float reaches the highest point, triggering a switching critical state for the controller. The controller switches to a high position, closing the vent valve and introducing power steam or compressed air to inject power into the valve, pushing the condensate in the pump towards the high-pressure zone. At this time, the inlet check valve cannot enter due to high internal pressure. When the float reaches a low position, the controller switches to shut off power, opens the vent valve, and begins the next operating cycle.

[0054] It should be noted that the steam trap pump 71 is existing technology, and its specific mechanism will not be described in detail here.

[0055] Furthermore, the steam trap pump 71 is connected to a balance pipe 72 and a vent pipe 73 so that the gas in the condensate can be discharged smoothly and vapor lock will not occur.

[0056] Optionally, the steam delivery system also includes an input pipe 81 and an output pipe 82. The input pipe 81 is connected in parallel with the blowing device 10 between the steam source 2 and the dryer 3. Primary steam enters the dryer 3 through the input pipe 81 or the blowing device 10. The output pipe 82 is connected in parallel with the gas-liquid separator 20 between the dryer 3 and the condensate main pipe 4. Condensate enters the condensate main pipe 4 through the output pipe 82 or the gas-liquid separator 20.

[0057] Specifically, the steam delivery system also includes a first shut-off valve group, a second shut-off valve group, a third shut-off valve group, and a fourth shut-off valve group. The first shut-off valve group includes a first shut-off valve A and a first shut-off valve B. First shut-off valve A is installed between the blowing device 10 and the steam source 2, used to control the connection or disconnection between the steam source 2 and the blowing device 10. First shut-off valve B is installed between the blowing device 10 and the dryer 3, used to control the connection or disconnection between the blowing device 10 and the dryer. The second shut-off valve group includes a second shut-off valve A and a second shut-off valve B. Second shut-off valve A is installed between the steam source 2 and the input pipeline 81, used to control the connection or disconnection between the steam source 2 and the input pipeline 81. Second shut-off valve B is installed between the input pipeline 81 and the dryer 3, used to control the connection or disconnection between the input pipeline 81 and the dryer. The third shut-off valve assembly includes a third shut-off valve A and a third shut-off valve B. Third shut-off valve A is installed between the dryer 3 and the gas-liquid separator 20, and is used to control the connection or disconnection between the two. Third shut-off valve B is installed between the gas-liquid separator 20 and the blowing device 10, and is used to control the connection or disconnection between the two. The fourth shut-off valve assembly is installed between the dryer 3 and the condensate main pipe 4, and is used to control the connection or disconnection between the dryer 3 and the condensate main pipe 4.

[0058] In use, either the first or second shut-off valve group can be opened. When the first shut-off valve group is open, the third shut-off valve group is open, and both the second and fourth shut-off valve groups are closed. Conversely, when the second or fourth shut-off valve group is open, both the first and third shut-off valve groups are closed.

[0059] For example, the first or second shut-off valve group can be opened depending on the amount of condensate produced in the dryer 3. That is, when the amount of condensate produced increases, the first shut-off valve group is opened to quickly eliminate the condensate, and the second shut-off valve group is opened otherwise.

[0060] A filament drying machine is also provided, including a steam source 2, a condensate main pipe 4, a dryer 3 and the aforementioned steam delivery system. The steam source 2 can deliver primary steam to the dryer 3 through a blowing device 10, and the condensate in the dryer 3 can be discharged to the condensate main pipe 4 through a gas-liquid separator 20.

[0061] Furthermore, the filament drying machine also includes a rotary sealing joint, and the blowing device 10 is connected to the dryer 3 through the rotary sealing joint.

[0062] It should be noted that the rotary sealing joint is existing technology, and its specific structure and working principle will not be described in detail here.

[0063] Furthermore, the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the protection scope of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention, the scope of which is determined by the scope of the appended claims.

Claims

1. A steam conveying system, characterized in that, include: A blowing device (10) is provided, the first input end of which can be connected to the output end of a steam source (2), the steam source (2) can generate primary steam, the output end of the blowing device (10) can be connected to the input end of a dryer (3), the primary steam is inside the dryer (3), part of which can be liquefied into condensate, and the other part can be converted into secondary steam, the temperature of the secondary steam is not higher than the temperature of the primary steam; A gas-liquid separator (20) is provided, the input end of which can be connected to the output end of the dryer (3) to obtain the secondary steam and the condensate. The first output end of the gas-liquid separator (20) can be connected to the second input end of the blowing device (10), and part of the secondary steam can enter the dryer (3) through the blowing device (10). The second output end of the gas-liquid separator (20) can be connected to the condensate main pipe (4) to discharge the condensate.

2. The steam conveying system according to claim 1, characterized in that, The blowing device (10) includes a mixing chamber, a throat, and a diffuser chamber. The mixing chamber, the throat, and the diffuser chamber are connected sequentially along the fluid flow direction. The cross-sectional area of ​​the flow channel of the mixing chamber and the cross-sectional area of ​​the flow channel of the diffuser chamber are both greater than the cross-sectional area of ​​the flow channel of the throat. The first input end and the second input end of the blowing device (10) are connected to the mixing chamber. The fluid includes the primary steam and / or the secondary steam.

3. The steam conveying system according to claim 1, characterized in that, It also includes a first diaphragm valve (31), the output end of the steam source (2) is connected to the first input end of the blowing device (10) through the first diaphragm valve (31), and the first diaphragm valve (31) is used to adjust the flow rate of the first-stage steam entering the blowing device (10).

4. The steam conveying system according to claim 3, characterized in that, It also includes a first pressure sensor (41) and a second pressure sensor (42), which are respectively disposed at the output end and the input end of the first diaphragm valve (31).

5. The steam conveying system according to claim 1, characterized in that, It also includes a first filter, through which the output end of the steam source (2) is connected to the first input end of the blowing device (10).

6. The steam conveying system according to claim 1, characterized in that, It also includes a first safety valve (61), the output end of the blowing device (10) is connected to the input end of the dryer (3) through the first safety valve (61), and the primary steam and / or the secondary steam can be discharged outside the steam conveying system through the first safety valve (61).

7. The steam conveying system according to claim 1, characterized in that, It also includes a second safety valve (62), which is installed in the gas-liquid separator (20), and a portion of the secondary steam can be discharged from the steam delivery system through the second safety valve (62).

8. The steam conveying system according to claim 1, characterized in that, It also includes a steam trap pump (71) for driving the condensate in the gas-liquid separator (20) to flow to the condensate main pipe (4), and the steam source (2) is able to provide the first-stage steam to the steam trap pump (71) for driving the steam trap pump (71).

9. The steam conveying system according to claim 1, characterized in that, It also includes an input pipe (81) and an output pipe (82). The input pipe (81) is connected in parallel with the blowing device (10) between the steam source (2) and the dryer (3). The primary steam enters the dryer (3) through the input pipe (81) or the blowing device (10). The output pipe (82) is connected in parallel with the gas-liquid separator (20) between the dryer (3) and the condensate main pipe (4). The condensate enters the condensate main pipe (4) through the output pipe (82) or the gas-liquid separator (20).

10. A filament drying machine, characterized in that, The system includes the steam source (2), the condensate main pipe (4), the dryer (3), and the steam delivery system according to any one of claims 1-9. The steam source (2) can deliver the primary steam to the dryer (3) through the blowing device (10), and the condensate in the dryer (3) can be discharged to the condensate main pipe (4) through the gas-liquid separator (20).

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