Drying and cooling production line for water-soluble compound fertilizer

Abstract

The utility model discloses a drying and cooling production line for a water-soluble compound fertilizer, which comprises a drying cylinder and a cooling cabinet, a conveying belt is arranged in the cooling cabinet, and a receiving hopper positioned above the conveying belt is arranged at one end, close to the drying cylinder, of the cooling cabinet. A spreading device and a cooling fan are sequentially arranged at the upper end of the cooling cabinet in the conveying direction of the conveying belt. A supporting frame is arranged at the lower end of the drying cylinder, a rotating cylinder is coaxially and rotatably arranged in the drying cylinder, and the outlet end of the rotating cylinder is arranged above the receiving hopper; an airflow cavity is arranged between the inner wall of the drying cylinder and the outer wall of the rotating cylinder in a non-contact mode, a plurality of air holes are evenly distributed in a cylinder body of the rotating cylinder, a heat supply pipeline communicated with the airflow cavity is arranged at the lower end of the drying cylinder, and the heat supply pipeline is connected with a hot air pump. The dried compound fertilizer is automatically driven by the conveying belt to pass through the spreading device and the cooling fan to be cooled, so that drying and cooling are automatically carried out, and the production efficiency of a compound fertilizer production line is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of compound fertilizer production equipment, specifically a drying and cooling production line for water-soluble compound fertilizer. Background Technology

[0002] Water-soluble compound fertilizers are widely used in agricultural production, and their quality directly affects crop growth and yield. During the compound fertilizer production process, after the raw materials are mixed and granulated, the granules often contain a certain amount of moisture. If not dried, the fertilizer is prone to clumping, affecting subsequent storage, transportation, and use. Furthermore, damp fertilizer may trigger chemical reactions, reducing its effectiveness. Therefore, drying equipment is indispensable in compound fertilizer production.

[0003] In the prior art, utility model patent CN202223502981.9 discloses a drying device for drum-type compound fertilizer, including a right support plate and a left support plate on the left side of the right support plate. Bearings are fixedly embedded on the adjacent sides of the right and left support plates. A power pipe is fixedly connected to the inner rings of the two bearings. A drying cylinder is fixedly connected to the outer surface of the power pipe. A motor is fixedly connected to the right side of the right support plate, and the output end of the motor is fixedly connected to the right end of the power pipe. A support cover is fixedly connected to the left side of the left support plate, and a hot air blower is fixedly installed on the inner wall of the support cover. An annular exhaust net is fixedly embedded on the outer surface of the power pipe. This drying device for drum-type compound fertilizer, through the operation of the motor and the cooperation of the power pipe, can drive the drying cylinder to rotate, causing the compound fertilizer inside the drying cylinder to tumble. This results in more uniform drying of the compound fertilizer and solves the problem of easy breakage of compound fertilizer after being stirred by external forces.

[0004] The aforementioned patent provides a production device for drying compound fertilizers. This device rotates the drying drum, causing the compound fertilizer inside to tumble and dry more evenly. However, after drying, the compound fertilizer still needs to be cooled separately or left to cool naturally. This makes cooling the dried compound fertilizer troublesome, time-consuming, and labor-intensive, and also leads to low production line efficiency, requiring further improvement. Utility Model Content

[0005] The purpose of this invention is to provide a drying and cooling production line for water-soluble compound fertilizers, which aims to improve the existing compound fertilizer drying equipment, which has a single function, resulting in the need for separate cooling of the dried compound fertilizer, which is time-consuming and labor-intensive, and also leads to low production efficiency of the production line.

[0006] This utility model is implemented as follows: A drying and cooling production line for water-soluble compound fertilizer includes a drying cylinder and a cooling cabinet. A conveyor belt is installed in the cooling cabinet, and a receiving hopper located above the conveyor belt is installed at one end of the cooling cabinet near the drying cylinder. A spreading device and a cooling fan are sequentially arranged at the upper end of the cooling cabinet along the conveying direction of the conveyor belt. A support frame is installed at the lower end of the drying cylinder, and a rotating cylinder is coaxially rotatably installed inside the drying cylinder. The outlet end of the rotating cylinder is located above the receiving hopper. An airflow cavity is provided between the inner wall of the drying cylinder and the outer wall of the rotating cylinder without contact. Several air vents are evenly distributed on the cylinder body of the rotating cylinder. A heating pipe communicating with the airflow cavity is installed at the lower end of the drying cylinder, and a hot air pump is connected to the heating pipe.

[0007] Preferably, the drying cylinder further includes a rotating bearing, a first rotating ring, and a second rotating ring; the first rotating ring is rotatably mounted on one end of the outer ring surface of the drying cylinder via the rotating bearing, and the second rotating ring is rotatably mounted on the other end via the rotating bearing, and the second rotating ring is connected to a first motor; the rotating cylinder is coaxially disposed inside the drying cylinder, and both ends extend to the outside of the drying cylinder and are rotatably disposed via the first rotating ring and the second rotating ring.

[0008] Preferably, a first gear is provided on the outer side of the second rotating ring, and a second gear is provided on the output shaft of the first motor, with the first gear and the second gear meshing with each other.

[0009] Preferably, it further includes a first connector and a second connector, with the first connector installed on the outer end face of both the first rotating ring and the second rotating ring, and the two ends of the rotating cylinder being connected by the second connector and the first connector on the same side, respectively.

[0010] Preferably, the heating pipeline includes branch pipes and an air inlet pipe; multiple branch pipes are sequentially arranged along the length of the upper end of the heating pipeline, and each of the multiple branch pipes is connected to an airflow chamber; an air inlet pipe is arranged at the lower end of the heating pipeline, and the air inlet pipe is connected to a hot air pump.

[0011] Preferably, the spreading device includes a second motor and a mounting base. The second motor is mounted on the upper surface of the cooling cabinet via the mounting base. The output shaft of the second motor extends through the cooling cabinet and into the interior, where a rotating shaft is provided. A spreading disc is provided at the lower end of the rotating shaft. A plurality of spreading rods are evenly distributed on the lower surface of the spreading disc, and the spreading rods are located above the conveyor belt.

[0012] Preferably, the support frame includes support legs and a hydraulic lifting column. The support frame has a support leg at one end and a hydraulic lifting column at the other end along the axial direction of the drying cylinder. A first mounting ring is rotatably mounted on the support leg, and a second mounting ring is rotatably mounted on the upper end of the hydraulic lifting column. The drying cylinder can be adjusted in angle via the first and second mounting rings.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. This utility model, by setting up a drying drum and a cooling cabinet, and installing a conveyor belt in the cooling cabinet to transport compound fertilizer, can automatically drive the dried compound fertilizer through a spreading device and a cooling fan for cooling, thereby automating the drying and cooling process, improving the automation level of the device, and increasing the production efficiency of the compound fertilizer production line.

[0015] 2. By setting up a support frame, the tilt angle of the drying drum on the support frame can be freely adjusted by the hydraulic lifting column in the support frame, thereby adjusting the speed at which the compound fertilizer passes through the rotating drum.

[0016] 3. By setting up a spreading device, the compound fertilizer piles can be automatically spread out by the rotating spreading disc and spreading rod in the spreading device, which facilitates rapid cooling. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0018] Figure 2 This is a cross-sectional structural schematic diagram of the present invention;

[0019] Figure 3 This is a schematic diagram of the installation structure of the drying cylinder and support frame of this utility model;

[0020] Figure 4 This is a schematic diagram of the structure of the rotating cylinder of this utility model;

[0021] Figure 5 This is a cross-sectional view of the rotating cylinder installed on the drying cylinder of this utility model;

[0022] Figure 6 This is a three-dimensional structural diagram of the spreading device of this utility model.

[0023] In the diagram: 1. Drying drum; 101. Rotating bearing; 102. First rotating ring; 103. Second rotating ring; 104. First gear; 105. First motor; 106. Second gear; 2. Cooling cabinet; 3. Rotating drum; 301. Vent hole; 4. Heating pipe; 401. Branch pipe; 402. Air inlet pipe; 5. Hot air pump; 6. Conveyor belt; 7. Cooling fan; 8. Spreading device; 801. Second motor; 802. Mounting base; 803. Rotating shaft; 804. Spreading disc; 805. Spreading rod; 9. Receiving hopper; 10. Support frame; 1001. Support leg; 1002. First mounting ring; 1003. Hydraulic lifting column; 1004. Second mounting ring; 11. First connecting piece; 12. Second connecting piece; 13. Airflow chamber. Detailed implementation method:

[0024] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., 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 according to the specific circumstances.

[0025] The following description, in conjunction with the accompanying drawings and specific embodiments, provides further details:

[0026] Example 1

[0027] like Figure 1 , Figure 2 and Figure 6As shown, a drying and cooling production line for water-soluble compound fertilizer includes a drying drum 1 and a cooling cabinet 2. A conveyor belt 6 is installed in the cooling cabinet 2. A receiving hopper 9 is located above the conveyor belt 6 at one end of the cooling cabinet 2 near the drying drum 1. A spreading device 8 and a cooling fan 7 are sequentially arranged at the upper end of the cooling cabinet 2 along the conveying direction of the conveyor belt 6. Two cooling fans 7 are provided. The compound fertilizer passing through the drying drum 1 is fed onto the conveyor belt 6 through the receiving hopper 9. Then, as it is conveyed by the conveyor belt 6, the spreading device 8 spreads the compound fertilizer on the conveyor belt 6 evenly onto the conveyor belt 6. Finally, the cooling fans 7 cool the spread compound fertilizer. The spreading device 8 includes a second motor 801 and a mounting base 802. The second motor 801 is mounted on the upper surface of the cooling cabinet 2 via the mounting base 802. The output shaft of the second motor 801 extends through the cooling cabinet 2 and into which a rotating shaft 803 is located. A spreading disc 804 is located at the lower end of the rotating shaft 803. Several spreading rods 805 are evenly distributed on the lower surface of the spreading disc 804, and the spreading rods 805 are located above the conveyor belt 6. The spreading device 8 drives the rotating shaft 803 to rotate via the second motor 801, which in turn drives the spreading disc 804 to rotate. During the rotation of the spreading disc 804, the spreading rods 805 spread the compound fertilizer that is fed from the receiving hopper 9, facilitating subsequent cooling by the cooling fan 7.

[0028] like Figure 1 and Figure 3 As shown, a support frame 10 is provided at the lower end of the drying cylinder 1. The support frame 10 includes a support leg 1001 and a hydraulic lifting column 1003. At both ends of the support frame 10 along the axial direction of the drying cylinder 1, a support leg 1001 is provided at one end, and a hydraulic lifting column 1003 is provided at the other end. A first mounting ring 1002 is rotatably mounted on the support leg 1001, and a second mounting ring 1004 is rotatably mounted on the upper end of the hydraulic lifting column 1003. The drying cylinder 1 can be adjusted in angle via the first mounting ring 1002 and the second mounting ring 1004. The drying cylinder 1 is supported by the support frame 10, and the tilt angle of the drying cylinder 1 can be adjusted by adjusting the lifting height of the hydraulic lifting column 1003.

[0029] like Figures 1-3 and Figure 5As shown, a rotating cylinder 3 is coaxially rotatably arranged inside the drying cylinder 1. The drying cylinder 1 also includes a rotating bearing 101, a first rotating ring 102, and a second rotating ring 103. The first rotating ring 102 is rotatably mounted on one end of the outer ring surface of the drying cylinder 1 via the rotating bearing 101, and the second rotating ring 103 is rotatably mounted on the other end via the rotating bearing 101. The second rotating ring 103 is connected to a first motor 105. A first gear 104 is arranged on the outer side of the second rotating ring 103, and a second gear 106 is arranged on the output shaft of the first motor 105. The first gear 104 and the second gear 106 mesh with each other. The motor can drive the second rotating ring 103 to rotate. The rotating cylinder 3 is coaxially arranged inside the drying cylinder 1, and both ends extend to the outside of the drying cylinder 1 and are rotatably arranged via the first rotating ring 102 and the second rotating ring 103. The system also includes a first connecting member 11 and a second connecting member 12. The outer end faces of the first rotating ring 102 and the second rotating ring 103 are each fitted with a first connecting member 11. The two ends of the rotating cylinder 3 are connected via the second connecting member 12 and the first connecting member 11 on the same side, respectively. By installing the first connecting member 11 on the outer sides of the first rotating ring 102 and the second rotating ring 103 at both ends of the drying cylinder 1, the outer sides of the first rotating ring 102 and the second rotating ring 103 at both ends of the drying cylinder 1 are flush with the two ends of the rotating cylinder 3. The second connecting member 12 connects the rotating cylinder 3 and the first connecting member 11 simultaneously, thereby enabling the rotating cylinder 3 to rotate via the first rotating ring 102 and the second rotating ring 103. This ensures that the rotating cylinder 3 and the drying cylinder 1 are not in contact, thus forming an airflow cavity 13 between the outer wall of the rotating cylinder 3 and the inner wall of the drying cylinder.

[0030] like Figure 2 , Figure 4 and Figure 5As shown, the outlet end of the rotating cylinder 3 is located above the receiving hopper 9; an airflow chamber 13 is provided between the inner wall of the drying cylinder 1 and the outer wall of the rotating cylinder 3 without contact. Several air vents 301 are evenly distributed on the cylinder body of the rotating cylinder 3. The diameter of the air vents 301 is smaller than the diameter of the compound fertilizer, allowing hot air to pass through while preventing the compound fertilizer from falling into the air vents 301. A heating pipe 4, connected to the airflow chamber 13, is provided at the lower end of the drying cylinder 1. The heating pipe 4 is connected to a hot air pump 5. The heating pipe 4 includes branch pipes 401 and an air inlet pipe 402; multiple branch pipes 401 are sequentially arranged along the length of the upper end of the heating pipe 4, all of which are connected to the airflow chamber 13; an air inlet pipe 402 is provided at the lower end of the heating pipe 4, connected to the hot air pump 5. The hot air pump 5 heats the airflow through a resistance wire, thus providing hot air. Hot air supplied by the hot air pump 5 is delivered to the airflow chamber 13 through the heating pipe 4, so that the hot air dries the compound fertilizer through the vent holes 301 on the rotating cylinder 3. As the rotating cylinder 3 rotates, the compound fertilizer inside the rotating cylinder 3 can be automatically turned over. At the same time, the length of the heating pipe 4 covers most of the length of the drying cylinder 1 and is distributed on the drying cylinder 1 through the branch pipes 401, so that hot air can be provided to the airflow chamber 13 in sections.

[0031] Example 2

[0032] like Figure 1 , Figure 2 and Figure 6 As shown, a drying and cooling production line for water-soluble compound fertilizer includes a drying drum 1 and a cooling cabinet 2. A conveyor belt 6 is installed in the cooling cabinet 2. A receiving hopper 9 is located above the conveyor belt 6 at one end of the cooling cabinet 2 near the drying drum 1. A spreading device 8 and a cooling fan 7 are sequentially arranged at the upper end of the cooling cabinet 2 along the conveying direction of the conveyor belt 6. Three cooling fans 7 are provided. The compound fertilizer passing through the drying drum 1 is fed onto the conveyor belt 6 through the receiving hopper 9. Then, as it is conveyed by the conveyor belt 6, the spreading device 8 spreads the compound fertilizer on the conveyor belt 6 evenly onto the conveyor belt 6. Finally, the cooling fans 7 cool the spread compound fertilizer. The spreading device 8 includes a second motor 801 and a mounting base 802. The second motor 801 is mounted on the upper surface of the cooling cabinet 2 via the mounting base 802. The output shaft of the second motor 801 extends through the cooling cabinet 2 and into which a rotating shaft 803 is located. A spreading disc 804 is located at the lower end of the rotating shaft 803. Several spreading rods 805 are evenly distributed on the lower surface of the spreading disc 804, and the spreading rods 805 are located above the conveyor belt 6. The spreading device 8 drives the rotating shaft 803 to rotate via the second motor 801, which in turn drives the spreading disc 804 to rotate. During the rotation of the spreading disc 804, the spreading rods 805 spread the compound fertilizer that is fed from the receiving hopper 9, facilitating subsequent cooling by the cooling fan 7.

[0033] like Figure 1 and Figure 3 As shown, a support frame 10 is provided at the lower end of the drying cylinder 1. The support frame 10 includes a support leg 1001 and a hydraulic lifting column 1003. At both ends of the support frame 10 along the axial direction of the drying cylinder 1, a support leg 1001 is provided at one end, and a hydraulic lifting column 1003 is provided at the other end. A first mounting ring 1002 is rotatably mounted on the support leg 1001, and a second mounting ring 1004 is rotatably mounted on the upper end of the hydraulic lifting column 1003. The drying cylinder 1 can be adjusted in angle via the first mounting ring 1002 and the second mounting ring 1004. The drying cylinder 1 is supported by the support frame 10, and the tilt angle of the drying cylinder 1 can be adjusted by adjusting the lifting height of the hydraulic lifting column 1003.

[0034] like Figures 1-3 and Figure 5 As shown, a rotating cylinder 3 is coaxially rotatably mounted inside the drying cylinder 1. The drying cylinder 1 also includes a rotating bearing 101, a first rotating ring 102, and a second rotating ring 103. The first rotating ring 102 is rotatably mounted on one end of the outer ring surface of the drying cylinder 1 via the rotating bearing 101, and the second rotating ring 103 is rotatably mounted on the other end via the rotating bearing 101. The second rotating ring 103 is connected to a first motor 105. A first gear 104 is mounted on the outer side of the second rotating ring 103, and a second gear 106 is mounted on the output shaft of the first motor 105. The first gear 104 and the second gear 106 mesh with each other. The rotating cylinder 3 is coaxially mounted inside the drying cylinder 1, and both ends extend to the outside of the drying cylinder 1 and are rotatably mounted via the first rotating ring 102 and the second rotating ring 103. It also includes a first connecting member 11 and a second connecting member 12. The outer end faces of the first rotating ring 102 and the second rotating ring 103 are both mounted with the first connecting member 11, and the two ends of the rotating cylinder 3 are connected via the second connecting member 12 and the first connecting member 11 on the same side, respectively.

[0035] like Figure 2 , Figure 4 and Figure 5 As shown, the outlet end of the rotating cylinder 3 is located above the receiving hopper 9; an airflow chamber 13 is provided between the inner wall of the drying cylinder 1 and the outer wall of the rotating cylinder 3 without contact; several air vents 301 are evenly distributed on the cylinder body of the rotating cylinder 3; a heating pipe 4 connected to the airflow chamber 13 is provided at the lower end of the drying cylinder 1, and the heating pipe 4 is connected to a hot air pump 5. The heating pipe 4 includes branch pipes 401 and an air inlet pipe 402; multiple branch pipes 401 are arranged sequentially along the length of the upper end of the heating pipe 4, and all multiple branch pipes 401 are connected to the airflow chamber 13; an air inlet pipe 402 is provided at the lower end of the heating pipe 4, and the air inlet pipe 402 is connected to the hot air pump 5.

[0036] The working principle of this utility model is as follows: During use, the drying drum 1 is adjusted to a suitable tilt angle by the hydraulic lifting column 1003. This facilitates the automatic sliding of the compound fertilizer in the rotating drum 3. The sliding speed is also adjusted according to the drying speed. The compound fertilizer to be dried is placed into the rotating drum 3. As the rotating drum 3 rotates, the compound fertilizer is automatically turned over and dried by hot air provided by the hot air pump 5. After drying, the compound fertilizer is placed from the rotating drum 3 into the receiving hopper 9, and then onto the conveyor belt 6. As the conveyor belt 6 carries the compound fertilizer through the spreading device 8 and the cooling fan 7, the spreading disc 804 in the spreading device 8 can be used to spread the piled compound fertilizer evenly. Then, the cooling fan 7 can be used for cooling, thus achieving fully automated drying and cooling.

[0037] In summary, this utility model, by setting up a drying cylinder 1 and a cooling cabinet 2, and installing a conveyor belt 6 in the cooling cabinet 2 to transport compound fertilizer, can automatically drive the dried compound fertilizer through a spreading device 8 and a cooling fan 7 for cooling. This automates the drying and cooling process, improves the automation level of the device, and increases the production efficiency of the compound fertilizer production line. By setting up a support frame 10, the tilt angle of the drying cylinder 1 on the support frame 10 can be freely adjusted by the hydraulic lifting column 1003 in the support frame 10, thereby adjusting the speed at which the compound fertilizer passes through the rotating cylinder 3. By setting up a spreading device 8, the rotating spreading disc 804 and spreading rod 805 in the spreading device 8 can automatically spread the piled compound fertilizer, facilitating rapid cooling.

[0038] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A drying and cooling production line for water-soluble compound fertilizer, comprising a drying drum (1), characterized in that, It also includes a cooling cabinet (2), in which a conveyor belt (6) is provided. A receiving hopper (9) located above the conveyor belt (6) is provided at one end of the cooling cabinet (2) near the drying cylinder (1). A spreading device (8) and a cooling fan (7) are arranged sequentially at the upper end of the cooling cabinet (2) along the conveying direction of the conveyor belt (6). A support frame (10) is provided at the lower end of the drying cylinder (1). A rotating cylinder (3) is coaxially rotatably arranged inside the drying cylinder (1). The outlet end of the rotating cylinder (3) is located above the receiving hopper (9). An airflow cavity (13) is provided between the inner wall of the drying cylinder (1) and the outer wall of the rotating cylinder (3) without contact. Several air vents (301) are evenly distributed on the cylinder body of the rotating cylinder (3). A heating pipe (4) connecting the airflow cavity (13) is provided at the lower end of the drying cylinder (1). A hot air pump (5) is connected to the heating pipe (4).

2. The drying and cooling production line for water-soluble compound fertilizer according to claim 1, characterized in that, The drying cylinder (1) further includes a rotating bearing (101), a first rotating ring (102), and a second rotating ring (103); the first rotating ring (102) is rotatably mounted on one end of the outer ring surface of the drying cylinder (1) through the rotating bearing (101), and the second rotating ring (103) is rotatably mounted on the other end through the rotating bearing (101). The second rotating ring (103) is connected to a first motor (105); the rotating cylinder (3) is coaxially arranged inside the drying cylinder (1), and both ends extend to the outside of the drying cylinder (1) through the first rotating ring (102) and the second rotating ring (103).

3. The drying and cooling production line for water-soluble compound fertilizer according to claim 2, characterized in that, A first gear (104) is provided on the outer side of the second rotating ring (103), and a second gear (106) is provided on the output shaft of the first motor (105). The first gear (104) and the second gear (106) mesh with each other.

4. The drying and cooling production line for water-soluble compound fertilizer according to claim 2, characterized in that, It also includes a first connector (11) and a second connector (12). The outer end faces of the first rotating ring (102) and the second rotating ring (103) are both equipped with the first connector (11). The two ends of the rotating cylinder (3) are connected by the second connector (12) and the first connector (11) on the same side, respectively.

5. The drying and cooling production line for water-soluble compound fertilizer according to claim 1, characterized in that, The heating pipe (4) includes a branch pipe (401) and an air inlet pipe (402); the upper end of the heating pipe (4) is provided with a plurality of branch pipes (401) in sequence along its length, and the plurality of branch pipes (401) are all connected to the airflow chamber (13); the lower end of the heating pipe (4) is provided with an air inlet pipe (402), and the air inlet pipe (402) is connected to the hot air pump (5).

6. The drying and cooling production line for water-soluble compound fertilizer according to claim 1, characterized in that, The spreading device (8) includes a second motor (801) and a mounting base (802). The second motor (801) is mounted on the upper surface of the cooling cabinet (2) via the mounting base (802). The output shaft of the second motor (801) extends through the cooling cabinet (2) and into which a rotating shaft (803) is provided. A spreading disc (804) is provided at the lower end of the rotating shaft (803). Several spreading rods (805) are evenly distributed on the lower surface of the spreading disc (804). The spreading rods (805) are located above the conveyor belt (6).

7. The drying and cooling production line for water-soluble compound fertilizer according to claim 1, characterized in that, The support frame (10) includes a support leg (1001) and a hydraulic lifting column (1003). The support frame (10) has a support leg (1001) at one end and a hydraulic lifting column (1003) at the other end along the axial direction of the drying cylinder (1). A first mounting ring (1002) is rotatably mounted on the support leg (1001), and a second mounting ring (1004) is rotatably mounted on the upper end of the hydraulic lifting column (1003). The drying cylinder (1) can be adjusted in angle by means of the first mounting ring (1002) and the second mounting ring (1004).

Images