Material drying machine utilizing steam waste heat
By designing a horizontal dryer that utilizes steam waste heat in the modified plastics industry, combining heating and stirring technology, the problems of low efficiency and high energy consumption of tower drying tanks are solved, and more efficient drying and lower Cost production process.
Patent Information
- Application Number
- CN202420873744.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-25
- Publication Date
- 2024-12-13
- Estimated Expiration
- 2034-04-25
AI Technical Summary
The existing tower drying tanks have problems such as long drying time, low efficiency, high energy consumption and inconvenient material output in the modified plastics industry.
A horizontal dryer using steam waste heat is designed, including a horizontal drying cylinder, heating assembly and air preheating assembly. The materials and air are heated through steam waste heat, combined with stirring and convection heat exchange technology to improve drying efficiency. And facilitate material output through adjustable support components.
It improves the efficiency of drying materials, reduces production costs, simplifies the material output process, and achieves more efficient energy utilization and lower production costs.
Smart Images
Figure CN222165540U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of material drying, in particular to a material drying machine utilizing steam waste heat. Background Art
[0002] Dryer, also known as dryer, is an industrial equipment that reduces the moisture content of materials by heating, blowing and sweeping. The most commonly used drying equipment in the modified plastics industry is the electrically heated tower drying tank. There are the following problems in the production process: 1. Plastic particles accumulate in the drying tank, and the water is evaporated only by heating, which takes a long time to dry and has low efficiency; 2. Electric heating consumes a lot of energy, which increases production costs; 3. The tower drying tank is narrow and deep, and it is easy for materials to remain when they are output.
[0003] Therefore, there is an urgent need for a drying machine that utilizes steam waste heat to solve the above problems. Utility Model Content
[0004] The purpose of the utility model is to provide a drying machine which utilizes the waste heat of steam, which can improve the drying efficiency, reduce the production cost and facilitate the output of materials.
[0005] To achieve this purpose, the utility model adopts the following technical solutions:
[0006] Provided is a drying machine utilizing steam waste heat, comprising:
[0007] A horizontal drying cylinder, one end of which is provided with a discharge port;
[0008] A support assembly, comprising a support rod and a support telescopic rod, wherein the support rod and the support telescopic rod are both connected to the horizontal drying barrel to support the horizontal drying barrel, and the length of the support telescopic rod can be adjusted to a working state and a discharging state. When the support telescopic rod is in the working state, the lengths of the support rod and the support telescopic rod are consistent, and when the support telescopic rod is in the discharging state, the one of the support rod and the support telescopic rod that is away from the discharging port is longer;
[0009] A heating assembly, comprising a heating tube, one end of which is connected to a steam source, and the heating tube is arranged at the outer side wall of the horizontal drying cylinder to heat the horizontal drying cylinder;
[0010] The air preheating component comprises a heat exchanger, wherein the inlet of the first side of the heat exchanger is connected to the steam source, the inlet of the second side of the heat exchanger is connected to the air source, and the outlet of the second side of the heat exchanger is connected to the inner cavity of the horizontal drying cylinder.
[0011] As a preferred solution of the drying machine utilizing waste heat of steam, it further comprises a stirring assembly, wherein the stirring assembly comprises stirring blades arranged in the horizontal drying barrel, and the stirring blades are rotatable to stir the materials in the horizontal drying barrel.
[0012] As a preferred solution for a drying machine utilizing waste heat from steam, the stirring assembly includes a stirring shaft and a driving member, the stirring shaft is connected to the output end of the driving member, and a plurality of stirring blades are provided, and the plurality of stirring blades are arranged on the stirring shaft at intervals so that the driving member can drive the plurality of stirring blades to rotate.
[0013] As a preferred solution for a drying machine utilizing waste heat of steam, the heating pipe comprises a plurality of heating pipe segments connected in series, and the length direction of each heating pipe segment is parallel to the axial direction of the horizontal drying barrel.
[0014] As a preferred solution of the drying machine utilizing the waste heat of steam, it further comprises a heat-insulating layer, wherein the heat-insulating layer is sleeved on the outer side of the horizontal drying cylinder, and the heating pipe is arranged between the heat-insulating layer and the horizontal drying cylinder.
[0015] As a preferred solution for a drying machine utilizing waste heat of steam, the end of the heating tube is connected to the head end of the heating tube to form a steam loop, and the end of the heating tube has a hydrophobic branch.
[0016] As a preferred solution for the drying machine utilizing the waste heat of steam, the air preheating component further comprises a blower, and the blower is disposed on the inlet pipeline on the second side of the heat exchanger.
[0017] As a preferred solution for the drying machine utilizing waste heat of steam, it also includes an exhaust pipeline, the outlet pipeline on the second side of the heat exchanger is connected to one end of the horizontal drying cylinder, and the exhaust pipeline is arranged at the other end of the horizontal drying cylinder.
[0018] As a preferred solution for the drying machine utilizing the residual heat of steam, the outlet of the first side of the heat exchanger is connected to a drain pipeline.
[0019] As a preferred solution of the drying machine using steam waste heat, it also includes a first regulating valve, which is arranged on the heating pipe;
[0020] And / or, further comprising a second regulating valve, wherein the second regulating valve is arranged on the inlet pipeline of the first side of the heat exchanger;
[0021] And / or, further comprising a third regulating valve, wherein the third regulating valve is arranged on the outlet pipeline of the first side of the heat exchanger;
[0022] And / or, further comprising a fourth regulating valve, wherein the fourth regulating valve is arranged on the inlet pipeline on the second side of the heat exchanger;
[0023] And / or, it also includes a fifth regulating valve, which is arranged on the drain branch of the heating pipe.
[0024] Beneficial effects of the utility model:
[0025] The utility model provides a drying machine utilizing steam waste heat, comprising a horizontal drying barrel, a support assembly, a heating assembly and an air preheating assembly. Among them, a discharge port is provided at one end of the horizontal drying barrel. The support assembly comprises a support rod and a support telescopic rod, both of which are connected to the horizontal drying barrel to support the horizontal drying barrel, and the length of the support telescopic rod can be adjusted to a working state and a discharge state. When the support telescopic rod is in the working state, the length of the support rod and the support telescopic rod are consistent, and when the support telescopic rod is in the discharge state, the one of the support rod and the support telescopic rod that is away from the discharge port is longer. Through the above arrangement, the horizontal drying barrel can be adjusted between a horizontal state and an inclined state. The horizontal state can dry the material, and the inclined state can make the discharge port be located at a lower position, so that the material can be discharged from the discharge port under the action of gravity. The heating assembly comprises a heating pipe, one end of which is connected to a steam source, and the heating pipe is arranged at the outer side wall of the horizontal drying barrel to heat the horizontal drying barrel, that is, the material is heated by utilizing steam waste heat to reduce production costs. The air preheating assembly includes a heat exchanger, the inlet of the first side of the heat exchanger is connected to the steam source, the inlet of the second side of the heat exchanger is connected to the air source, and the outlet of the second side of the heat exchanger is connected to the inner cavity of the horizontal drying drum. That is, the air is heated by using the waste heat of steam, and the hot air is input into the horizontal drying drum, so that the drying efficiency of the material can be improved by convection heat transfer. Therefore, the drying machine using the waste heat of steam can improve the drying efficiency, reduce production costs, and facilitate the output of materials. BRIEF DESCRIPTION OF THE DRAWINGS
[0026] Figure 1 This is a structural schematic diagram of a drying machine utilizing steam waste heat provided by an embodiment of the utility model from a first perspective;
[0027] Figure 2 It is a structural schematic diagram of a drying machine utilizing steam waste heat provided by an embodiment of the utility model from a second viewing angle.
[0028] In the figure:
[0029] 1. Horizontal drying barrel; 101. discharge pipe; 102. drying chamber; 103. top cover; 104. inlet pipe; 105. filter element; 106. discharge valve;
[0030] 2. Support rod; 3. Support telescopic rod; 4. Heating tube; 5. Heat exchanger; 6. Stirring blade; 7. Stirring shaft; 8. Driving part; 9. Insulation layer; 10. Drain branch; 11. Blower; 12. Exhaust pipeline; 13. Drain pipeline; 14. First regulating valve; 15. Second regulating valve; 16. Third regulating valve; 17. Fourth regulating valve; 18. Fifth regulating valve; 19. Collecting pipeline; 20. Sixth regulating valve; 21. Drain; 22. Temperature sensor; 23. Collection pipeline; 24. Intake pipeline. DETAILED DESCRIPTION
[0031] The technical solution of the utility model is further described below in conjunction with the accompanying drawings and implementation methods. It is understood that the specific embodiments described herein are only used to explain the utility model, rather than to limit the utility model. It should also be noted that, for the convenience of description, only the parts related to the utility model are shown in the accompanying drawings, rather than all.
[0032] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0033] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.
[0034] like Figure 1-Figure 2 As shown, the drying machine using steam waste heat in this embodiment includes a horizontal drying cylinder 1, a supporting component, a heating component and an air preheating component.
[0035] Among them, a discharge port is provided at one end of the horizontal drying barrel 1. The support assembly includes a support rod 2 and a support telescopic rod 3. The support rod 2 and the support telescopic rod 3 are both connected to the horizontal drying barrel 1 to support the horizontal drying barrel 1. The length of the support telescopic rod 3 can be adjusted to a working state and a discharge state. When the support telescopic rod 3 is in the working state, the lengths of the support rod 2 and the support telescopic rod 3 are the same. When the support telescopic rod 3 is in the discharge state, the one of the support rod 2 and the support telescopic rod 3 that is away from the discharge port is longer. Through the above arrangement, the horizontal drying barrel 1 can be adjusted between a horizontal state and an inclined state. The horizontal state can dry the material, and the inclined state can make the discharge port be located at a lower position, so that the material can be discharged from the discharge port under the action of gravity.
[0036] Optionally, the horizontal drying barrel 1 is four meters long, one meter in diameter, and made of stainless steel. Optionally, the horizontal drying barrel 1 comprises a top cover 103 and a main body, the top cover 103 is located above the main body and is hinged to the main body so that the top cover 103 can be turned over, and a cover opening protection chain is set.
[0037] Optionally, the supporting telescopic rod 3 is a hydraulic rod or a combination of a hydraulic rod and a rod, so that the supporting telescopic rod 3 has a telescopic function. In this embodiment, the hydraulic rod is arranged in the middle of the supporting telescopic rod 3, and both ends have a rod structure. Optionally, the supporting rod 2 and the supporting telescopic rod 3 are both connected to the main body of the horizontal drying drum 1 with bolts.
[0038] Optionally, a feeding port is provided on the top cover 103 of the horizontal drying cylinder 1, the diameter of the feeding port is 50 cm, a feeding pipe 104 is provided at the feeding port, and a filter 105 is laid in the feeding pipe 104 to facilitate filtering of the material. Optionally, the filter 105 is a stainless steel sieve plate with a thickness of 1 mm and a sieve hole diameter of 5 mm, and the stainless steel sieve plate is hinged to the feeding pipe 104 and can be turned over.
[0039] Optionally, the discharge pipe 101 is arranged at the discharge port, and the discharge port is arranged tangent to the drying chamber 102 in the horizontal drying barrel 1, so that the material at the bottom layer in the horizontal drying barrel 1 can also be discharged from the discharge port. Optionally, a discharge valve 106 is arranged on the discharge pipe 101 to control the discharge of the material, and the discharge valve 106 is a simple stainless steel gate.
[0040] The heating assembly includes a heating tube 4, one end of which is connected to a steam source. The heating tube 4 is arranged at the outer wall of the horizontal drying barrel 1 to heat the horizontal drying barrel 1, that is, the waste heat of steam is used to heat the material, which can reduce production costs and improve energy utilization.
[0041] Preferably, the heating tube 4 comprises a plurality of heating tube sections connected in series, and the length direction of each heating tube section is parallel to the axial direction of the horizontal drying cylinder 1. Figure 2As shown, a plurality of heating pipe segments are evenly spaced along the circumference of the horizontal drying barrel 1, and adjacent heating pipe segments are connected by elbows. Optionally, in this embodiment, eight heating pipe segments are provided, and the material of the heating pipe segments is DN40 carbon steel.
[0042] Preferably, the end of the heating tube 4 is connected to the head end of the heating tube 4 to form a steam loop so that the unliquefied steam can be circulated. The end of the heating tube 4 has a drain branch 10 to discharge the condensed liquid from the heating tube 4. A drain branch 10 is provided on the pipeline of the drain branch 10.
[0043] Optionally, the heating pipe 4 also includes a head end pipe section and a metal hose, the head end pipe section is connected to the steam source, the other end of the head end pipe section is connected to the first heating pipe section through the metal hose, and the last heating pipe section is connected to the head end pipe section through another metal hose.
[0044] In order to reduce the heat loss of steam, preferably, the drying machine using waste heat of steam further includes a heat-insulating layer 9, which is sleeved on the outside of the horizontal drying barrel 1, and the heating tube 4 is arranged between the heat-insulating layer 9 and the horizontal drying barrel 1. Optionally, the heat-insulating layer 9 is a heat-insulating cover shell, which is arranged according to the shape of the horizontal drying barrel 1.
[0045] In order to improve the drying efficiency, hot air can be input into the horizontal drying barrel 1, and the waste heat of steam can be used to heat the air to obtain hot air. Specifically, the air preheating component includes a heat exchanger 5, the inlet of the first side of the heat exchanger 5 is connected to the steam source, the inlet of the second side of the heat exchanger 5 is connected to the air source, and the outlet of the second side of the heat exchanger 5 is connected to the inner cavity of the horizontal drying barrel 1. That is, the air is heated by the waste heat of steam, and the hot air is input into the horizontal drying barrel 1, so that the drying efficiency of the material can be improved by convection heat transfer. Therefore, the drying machine using the waste heat of steam can improve the drying efficiency, reduce production costs, and facilitate the output of materials. Optionally, the air is heated to 40°C-70°C by the heat exchanger 5, enters the horizontal drying barrel 1, and removes the water vapor on the surface of the material through blowing and heating.
[0046] Preferably, the air preheating component further comprises a blower 11, which is disposed on the inlet pipeline of the second side of the heat exchanger 5. The air is pressurized by the blower 11 and enters the second side of the heat exchanger 5 to absorb the heat of the steam.
[0047] Preferably, the drying machine using steam waste heat further includes an exhaust pipe 12, the outlet pipe of the second side of the heat exchanger 5 is connected to one end of the horizontal drying barrel 1, and the exhaust pipe 12 is arranged at the other end of the horizontal drying barrel 1, so that air enters from one end of the horizontal drying barrel 1 and carries the gas evaporated from the drying material to be discharged from the drying chamber 102 from the other end of the horizontal drying barrel 1. Optionally, the exhaust pipe 12 is also connected to a collection pipe 19 to collect and process the exhaust gas.
[0048] Preferably, the outlet of the first side of the heat exchanger 5 is connected to the drain pipe 13 so that the condensed liquid is discharged through the drain pipe 13 , and a drain trap 21 is provided on the drain pipe 13 .
[0049] In order to accurately adjust the flow rate of steam to control the temperature of the horizontal drying cylinder 1 , preferably, the drying machine using the waste heat of steam further includes a first regulating valve 14 , which is disposed on the heating tube 4 .
[0050] Optionally, the heating assembly further includes a collecting pipeline 23, one end of which is connected to the steam source, and the other end of which is branched into a heating pipe 4 and a preheating pipe, part of the steam flows through the heating pipe 4 to heat the horizontal drying cylinder 1, and another part of the steam flows through the preheating pipe to enter the first side of the heat exchanger 5 to heat the air. Optionally, a sixth regulating valve 20 is provided on the collecting pipeline 23 to adjust the input flow of the steam.
[0051] Preferably, the drying machine utilizing waste heat of steam further comprises a second regulating valve 15, which is disposed on the inlet pipeline of the first side of the heat exchanger 5 to adjust the flow rate of steam used to heat the air, thereby adjusting the temperature rise amplitude of the air.
[0052] Preferably, the drying machine using waste heat of steam further comprises a third regulating valve 16, which is arranged on the outlet pipeline of the first side of the heat exchanger 5, namely the drain pipeline 13, to regulate the discharge of the liquid.
[0053] Preferably, the drying machine using waste heat of steam further comprises a fourth regulating valve 17, which is arranged on the inlet pipeline of the second side of the heat exchanger 5, namely, the air inlet pipeline 24, to adjust the air flow.
[0054] Preferably, the drying machine using steam waste heat further includes a fifth regulating valve 18, which is arranged on the drain branch 10 of the heating pipe 4 to adjust the discharge of the liquid. Optionally, the first regulating valve 14, the second regulating valve 15, the third regulating valve 16, the fourth regulating valve 17, the fifth regulating valve 18 and the sixth regulating valve 20 are all manual valves.
[0055] Preferably, in order to monitor the temperature in the drying chamber 102 of the horizontal drying barrel 1, a temperature sensor 22 is also provided here. Optionally, a temperature sensor 22 is also provided at the head end of the heating tube 4 to detect the steam temperature there. Optionally, the temperature sensor 22 and the first regulating valve 14 are cascaded to control the target temperature. Optionally, in this embodiment, the steam temperature in the heating tube 4 is controlled at 80°C-120°C.
[0056] In order to further increase the drying efficiency, preferably, the drying machine utilizing steam waste heat further comprises a stirring assembly, wherein the stirring assembly comprises a stirring blade 6 disposed in the horizontal drying barrel 1 , and the stirring blade 6 can rotate to stir the material in the horizontal drying barrel 1 .
[0057] Preferably, the stirring assembly includes a stirring shaft 7 and a driving member 8, the stirring shaft 7 is connected to the output end of the driving member 8, and a plurality of stirring blades 6 are provided, and the plurality of stirring blades 6 are arranged at intervals on the stirring shaft 7 so that the driving member 8 can drive the plurality of stirring blades 6 to rotate.
[0058] Optionally, three groups of stirring blades 6 are provided, the dynamic and static rings are mechanically sealed, the driving member 8 is a driving motor, and the driving motor and the gear transmission are located at one end of the horizontal drying barrel 1 where the discharge pipe 101 is not provided. Optionally, the rotation speed of the stirring blades 6 is set to 8rpm, and the contact area between the material surface and the hot air is increased by stirring and flipping.
[0059] The working process of the drying machine using steam waste heat in this embodiment is as follows:
[0060] Equipment startup: Open the top cover 103, check and confirm whether the cleanliness of the inner wall of the horizontal drying barrel 1 and the stirring blade 6 meets the drying requirements. Confirm that the discharge valve 106 is closed, confirm that the hydraulic rod is reset, and the horizontal drying barrel 1 is in a horizontal position. Then close the top cover 103, put the material to be dried from the feeding port and close the feeding port, set the baking temperature, open the sixth regulating valve 20, open the fifth regulating valve 18, and the temperature in the horizontal drying barrel 1 begins to rise. Start the driving part 8 to start stirring, open the fourth regulating valve 17, start the blower 11, and let the air pass into the horizontal drying barrel 1. Open the second regulating valve 15 and the third regulating valve 16 to preheat the air, and the exhaust gas in the horizontal drying barrel 1 is discharged and processed through the exhaust pipe 12 and the collection pipe 19.
[0061] Equipment stop: close the sixth regulating valve 20 and the second regulating valve 15, stop steam heating, and cool the drying chamber 102 of the horizontal drying barrel 1 to below 35°C. Stop the blower 11, close the fourth regulating valve 17, and stop air from entering the horizontal drying barrel 1. The hydraulic rod lifts the horizontal drying barrel 1 to form a 20° inclination, and opens the discharge valve 106 to start discharging. After discharging, the drive member 8 is closed, the top cover 103 of the horizontal drying barrel 1 is opened, the inner wall of the horizontal drying barrel 1 and the stirring blade 6 are cleaned, and then the top cover 103 is reset, the hydraulic rod is reset, and the third regulating valve 16 and the fifth regulating valve 18 are closed.
[0062] The drying machine using waste steam heat in this embodiment can heat the horizontal drying barrel 1 through the steam tubes, and can also heat the air so that the hot air can purge the material, and combined with the stirring and turning of the material, the efficiency of material drying can be maximized. In addition, the drying machine using waste steam heat can also make full use of the surplus waste steam heat of thermal power enterprises and chemical enterprises to replace electric heating, reduce energy consumption, and save production costs. The drying machine using waste steam heat can effectively improve work efficiency and reduce labor intensity through a variety of simple and practical designs, such as the flip top cover 103, steam temperature CV valve cascade control, etc.
[0063] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the claims of the present invention.
Claims
1. A drying machine utilizing waste heat of steam, characterized in that: include: A horizontal drying cylinder (1), wherein one end of the horizontal drying cylinder (1) is provided with a discharge port; A support assembly, comprising a support rod (2) and a support telescopic rod (3), wherein the support rod (2) and the support telescopic rod (3) are both connected to the horizontal drying barrel (1) to support the horizontal drying barrel (1), and the length of the support telescopic rod (3) can be adjusted to a working state and a discharging state. When the support telescopic rod (3) is in the working state, the lengths of the support rod (2) and the support telescopic rod (3) are the same; when the support telescopic rod (3) is in the discharging state, the one of the support rod (2) and the support telescopic rod (3) that is farther from the discharging port is longer. A heating assembly, comprising a heating tube (4), one end of the heating tube (4) being connected to a steam source, and the heating tube (4) being arranged on the outer side wall of the horizontal drying cylinder (1) to heat the horizontal drying cylinder (1); The air preheating component comprises a heat exchanger (5), wherein the inlet on the first side of the heat exchanger (5) is connected to the steam source, the inlet on the second side of the heat exchanger (5) is connected to the air source, and the outlet on the second side of the heat exchanger (5) is connected to the inner cavity of the horizontal drying cylinder (1).
2. The drying machine using steam waste heat according to claim 1, characterized in that: It also comprises a stirring component, wherein the stirring component comprises a stirring blade (6) arranged in the horizontal drying barrel (1), and the stirring blade (6) is capable of rotating to stir the material in the horizontal drying barrel (1).
3. The drying machine using steam waste heat according to claim 2, characterized in that: The stirring assembly further comprises a stirring shaft (7) and a driving member (8), wherein the stirring shaft (7) is connected to the output end of the driving member (8), and a plurality of stirring blades (6) are provided, wherein the plurality of stirring blades (6) are arranged at intervals on the stirring shaft (7), so that the driving member (8) can drive the plurality of stirring blades (6) to rotate.
4. The drying machine using steam waste heat according to claim 1, characterized in that: The heating tube (4) comprises a plurality of heating tube sections connected in series, and the length direction of each heating tube section is parallel to the axial direction of the horizontal drying cylinder (1).
5. The drying machine using steam waste heat according to claim 1, characterized in that: It also comprises a heat-insulating layer (9), wherein the heat-insulating layer (9) is sleeved on the outside of the horizontal drying cylinder (1), and the heating tube (4) is arranged between the heat-insulating layer (9) and the horizontal drying cylinder (1).
6. The drying machine using steam waste heat according to any one of claims 1 to 5, characterized in that: The end of the heating tube (4) is connected to the head end of the heating tube (4) to form a steam loop, and the end of the heating tube (4) is provided with a hydrophobic branch (10).
7. The drying machine using steam waste heat according to any one of claims 1 to 5, characterized in that: The air preheating component further comprises a blower (11), and the blower (11) is arranged on the inlet pipeline of the second side of the heat exchanger (5).
8. The drying machine using steam waste heat according to any one of claims 1 to 5, characterized in that: It also comprises an exhaust pipeline (12), wherein the outlet pipeline of the second side of the heat exchanger (5) is connected to one end of the horizontal drying cylinder (1), and the exhaust pipeline (12) is arranged at the other end of the horizontal drying cylinder (1).
9. The drying machine using steam waste heat according to any one of claims 1 to 5, characterized in that: The outlet of the first side of the heat exchanger (5) is connected to the drain pipe (13).
10. The drying machine using steam waste heat according to any one of claims 1 to 5, characterized in that: It also includes a first regulating valve (14), wherein the first regulating valve (14) is arranged on the heating pipe (4); And / or, further comprising a second regulating valve (15), wherein the second regulating valve (15) is arranged on the inlet pipeline of the first side of the heat exchanger (5); And / or, further comprising a third regulating valve (16), wherein the third regulating valve (16) is arranged on the outlet pipeline of the first side of the heat exchanger (5); And / or, further comprising a fourth regulating valve (17), wherein the fourth regulating valve (17) is arranged on the inlet pipeline on the second side of the heat exchanger (5); And / or, it also includes a fifth regulating valve (18), wherein the fifth regulating valve (18) is arranged on the drain branch (10) of the heating pipe (4).