Paddle drainage mechanism of hollow paddle dryer

Abstract

The utility model discloses a paddle drainage mechanism of a hollow paddle dryer, which comprises a drainage pipe, an air inlet pipe arranged in the drainage pipe, a connecting column fixedly connected between the drainage pipe and the air inlet pipe, and a paddle arranged on the outer wall of the drainage pipe, and further comprises a drainage device, and the drainage device is arranged outside the air inlet pipe. The utility model relates to the technical field of acrylic resin processing equipment, in particular to a paddle drainage mechanism of a hollow paddle drying machine, which realizes drainage of condensate water in paddles through cooperation of an annular sleeve, a first rubber pad, a second rubber pad, a blocking block and a spring, and solves the problem that when an existing hollow paddle drying machine is used for drying materials, the condensate water in the paddles cannot be drained. The problems that the heat transfer efficiency of the blades is reduced and the drying effect of the whole drying machine is influenced due to the fact that a part of condensate water is generated by a heat medium in the hollow blades in the heat exchange process and is accumulated in the blades after a long time are solved.

Description

Technical Field

[0001] This utility model relates to the technical field of acrylic resin processing equipment, specifically to a paddle drainage mechanism for a hollow paddle dryer. Background Technology

[0002] The hollow paddle dryer is a horizontal stirring dryer that mainly uses heat conduction. It is called a hollow paddle dryer because the hollow stirring blades inside resemble oars. It is used to dry acrylic resins during processing.

[0003] When using existing hollow paddle dryers, workers put materials into the dryer and then allow external water vapor to enter the paddles through the air inlet pipe, drying the materials through heat conduction.

[0004] However, when existing hollow paddle dryers dry materials, some condensate is generated during the heat exchange process of the heat medium inside the hollow paddles. Over time, this condensate accumulates inside the paddles, reducing the heat transfer efficiency of the paddles and thus affecting the overall drying effect of the dryer. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a paddle drainage mechanism for a hollow paddle dryer. This solves the problem that in existing hollow paddle dryers, some condensate is generated during the heat exchange process of the heat medium inside the hollow paddles. Over time, this condensate accumulates inside the paddles, reducing the heat transfer efficiency of the paddles and thus affecting the overall drying effect of the dryer.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a paddle drainage mechanism for a hollow paddle dryer, comprising a drain pipe, an air inlet pipe disposed inside the drain pipe, a connecting column fixedly connected between the drain pipe and the air inlet pipe, and paddles disposed on the outer wall of the drain pipe. The paddle drainage mechanism for the hollow paddle dryer further includes a drainage device disposed outside the air inlet pipe; a flow guiding device disposed inside the paddles; and an auxiliary device disposed outside the drain pipe. The drainage device discharges condensate from inside the paddles, the flow guiding device accelerates the flow of condensate adhering to the inner wall of the paddles, and the auxiliary device facilitates the disassembly and installation of the paddles.

[0007] Preferably, the drainage device includes a connecting pipe that communicates with the interior of the drain pipe and extends its end into the interior of the drain pipe; an outlet is opened on the side wall of the connecting pipe; an annular sleeve is fixedly connected to the inner wall of the connecting pipe; a first rubber pad is fixedly connected to the inner wall of the annular sleeve; a second rubber pad is fixedly connected to the inner wall of the connecting pipe on the side away from the annular sleeve; the bottom of the spring is fixedly connected to the bottom of the inner wall of the connecting pipe; and a plug is fixedly connected to the top of the spring. When the connecting pipe is rotated to a vertical position, the plug is dislodged from the first rubber pad due to gravity, causing the connecting pipe to open, allowing condensate to enter the connecting pipe and then enter the drain pipe through the outlet.

[0008] Preferably, the flow guiding device includes a ramp formed at the top of the inner wall of the blade; and a water guide channel formed on the side wall of the blade; wherein, the combination of the ramp and the water guide channel accelerates the flow of condensate adhering to the inner wall of the blade.

[0009] Preferably, the auxiliary device includes a connecting ear, which is fixedly connected to the side wall of the blade and fits against the surface of the drain pipe; bolts are threadedly connected to the inner wall of the connecting ear and the inner wall of the drain pipe respectively; a sealing ring is fixedly connected to the inner wall of the blade and its outer wall fits against the surface of the drain pipe; two sets of mounting parts are provided and are respectively located at both ends of the drain pipe; an air intake part is located inside the air intake pipe; wherein, the blade is replaced by the cooperation of the connecting ear and the bolt, and the sealing ring improves the sealing performance of the blade.

[0010] Preferably, the mounting part includes a mounting plate, which is fixedly connected to the end of the drain pipe; mounting holes are formed on the surface of the mounting plate; wherein the blade is integrally installed into the interior of the hollow blade dryer through the mounting plate and the mounting holes.

[0011] Preferably, the air intake includes a vertical pipe connected to the inner wall of the air intake pipe, with one end passing through the drain pipe and extending into the interior of the blade; the air outlet is located at the end of the vertical pipe away from the air intake pipe; wherein, through the cooperation of the vertical pipe and the air outlet, high-temperature steam inside the air intake pipe enters the blade.

[0012] Beneficial effects

[0013] This utility model provides a paddle drainage mechanism for a hollow paddle dryer. It offers the following advantages: This paddle drainage mechanism, through the cooperation of a connecting pipe, outlet, annular sleeve, first rubber pad, second rubber pad, plug, and spring, effectively drains condensate from inside the paddles. This solves the problem in existing hollow paddle dryers where, during material drying, the heat medium inside the hollow paddles generates condensate during heat exchange. Over time, this condensate accumulates inside the paddles, reducing heat transfer efficiency and affecting the overall drying effect.

[0014] By combining the ramp and the water guide channel, the flow rate of condensate is accelerated, and the accumulation of condensate on the inner wall of the blade is reduced. This solves the problem that when condensate is discharged from inside the blade, some condensate adheres to the side wall of the blade, and the flow rate of this condensate is relatively slow, which reduces the efficiency of the condenser flow from inside the blade. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the appearance of the present utility model;

[0017] Figure 3 for Figure 1 A schematic diagram of the structure of the middle blade, air intake pipe, and exhaust pipe;

[0018] Figure 4 for Figure 1 A schematic diagram of the structure of the connecting lug, connecting pipe, and drain pipe;

[0019] Figure 5 for Figure 4 Enlarged view of point A in the middle.

[0020] In the diagram: 1. Drain pipe; 2. Air inlet pipe; 3. Connecting column; 4. Blade; 5. Drainage device; 51. Connecting pipe; 52. Water outlet; 53. Annular sleeve; 54. First rubber pad; 55. Second rubber pad; 56. Block; 57. Spring; 6. Flow guide device; 61. Slope; 62. Water guide channel; 7. Auxiliary device; 71. Connecting ear; 72. Bolt; 73. Sealing ring; 74. Mounting part; 741. Mounting plate; 742. Mounting hole; 75. Air inlet; 751. Vertical pipe; 752. Air outlet. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] When drying materials, existing hollow paddle dryers generate some condensate during the heat exchange process of the heat medium inside the hollow paddles. Over time, this condensate accumulates inside the paddles, reducing the heat transfer efficiency of the paddles and thus affecting the overall drying effect of the dryer.

[0023] In view of this, the present invention provides a paddle drainage mechanism for a hollow paddle dryer, which solves the problem of draining condensate from inside the paddle by means of a connecting pipe, a water outlet, an annular sleeve, a first rubber pad, a second rubber pad, a plug, and a spring. This solves the problem that in existing hollow paddle dryers, some condensate is generated during the heat exchange process of the heat medium inside the hollow paddles. Over time, this condensate accumulates inside the paddles, reducing the heat transfer efficiency of the paddles and thus affecting the drying effect of the entire dryer.

[0024] Those skilled in the art can connect the components in this case sequentially. The specific connection and operation sequence should refer to the working principle described below. The detailed connection methods are well-known technologies in the field. The working principle and process are mainly described below.

[0025] Example 1: By Figure 1-5 It can be seen that a paddle drainage mechanism for a hollow paddle dryer includes a drain pipe 1, an air inlet pipe 2, a connecting column 3, paddles 4, a drainage device 5, a flow guiding device 6, and an auxiliary device 7. The drain pipe 1 has an air inlet pipe 2 inside, and a connecting column 3 is fixedly connected between the drain pipe 1 and the air inlet pipe 2. The drain pipe 1 serves as the main drainage channel, and the air inlet pipe 2 inside is used to transport high-temperature steam. The connecting column 3 fixes the two together to ensure structural stability. Paddles 4 are installed on the outer wall of the drain pipe 1 and are a key component for drying materials. The paddle drainage mechanism of the hollow paddle dryer also includes a drainage device 5, a flow guiding device 6, and an auxiliary device 7. The drainage device 5 is located outside the air inlet pipe 2; the flow guiding device 6 is located inside the paddle 4; and the auxiliary device 7 is located outside the drain pipe 1. The drainage device 5 is responsible for draining the condensate inside the paddle, the flow guiding device 6 accelerates the flow of condensate on the inner wall of the paddle, and the auxiliary device 7 facilitates the disassembly and installation of the paddle. Specifically, the drainage device 5 drains the condensate inside the paddle 4, the flow guiding device 6 accelerates the flow of condensate adhering to the inner wall of the paddle 4, and the auxiliary device 7 facilitates the disassembly and installation of the paddle.

[0026] In the specific implementation process, it is worth noting that the drain pipe 1, air inlet pipe 2, connecting column 3, blade 4, as well as the drain device 5, flow guiding device 6 and auxiliary device 7 constitute the blade drainage mechanism of the hollow blade dryer. The drain pipe 1 serves as the main drainage channel, and the air inlet pipe 2 is installed inside it to transport high-temperature steam. The connecting column 3 fixes the two together to ensure structural stability. The blade 4 is installed on the outer wall of the drain pipe 1 and is a key component for drying materials. The drain device 5 is responsible for draining the condensate inside the blade. The flow guiding device 6 accelerates the flow rate of the condensate on the inner wall of the blade. The auxiliary device 7 facilitates the disassembly and installation of the blade.

[0027] Specifically, the paddle drainage mechanism of the hollow paddle dryer consists of drain pipe 1, air inlet pipe 2, connecting column 3, paddle 4, drainage device 5, flow guiding device 6, and auxiliary device 7. Drain pipe 1 serves as the main drainage channel, and air inlet pipe 2 is installed inside it to transport high-temperature steam. Connecting column 3 fixes the two together to ensure structural stability. Paddle 4 is installed on the outer wall of drain pipe 1 and is a key component for drying materials. Drain device 5 is responsible for draining the condensate inside the paddle. Flow guiding device 6 accelerates the flow rate of condensate on the inner wall of the paddle. Auxiliary device 7 facilitates the disassembly and installation of the paddle.

[0028] Example 2: From Figure 1-5 It can be seen that the drainage device 5 includes a connecting pipe 51, a water outlet 52, an annular sleeve 53, a first rubber pad 54, a second rubber pad 55, a plug 56, and a spring 57. The connecting pipe 51 is connected to the interior of the drainage pipe 1, and its end extends into the interior of the drainage pipe 1. The water outlet 52 is opened on the side wall of the connecting pipe 51. The blade 4, the drainage pipe 1, and the connecting pipe 51 rotate simultaneously. When draining water from the blade 4, when the blade 4 rotates to the top of the drainage pipe 1, the connecting pipe 51 is in a vertical state. At this time, due to gravity, the block 56 descends, compressing the spring 57. The block 56 then contacts the second rubber pad 55, which prevents condensate from entering the spring 57. The annular sleeve 53 is fixedly connected to the inner wall of the connecting pipe 51. The block 56 leaves the first rubber pad 54 inside the annular sleeve 53. The first rubber pad 54 increases the seal between the block 56 and the annular sleeve 53. At this time, the connecting pipe 51 opens, and the block 56 descends below the outlet 52, opening the outlet 52. Condensate inside the blade 4 enters the connecting pipe 51 and flows through the outlet 52 into the drain pipe 1. The condensate is discharged from the blade 4 through the drain pipe 1. The first rubber pad 54 is fixedly connected to the inner wall of the annular sleeve 53. The second rubber pad 55 is fixedly connected to the inner wall of the connecting pipe 51 on the side away from the annular sleeve 53. The bottom of the spring 57 is fixedly connected to the bottom of the inner wall of the connecting pipe 51. The block 56 is fixedly connected to... The top of the spring 57; when the blade 4 rotates to the bottom of the drain pipe 1, the block 56 moves, the spring 57 rebounds, the block 56 contacts the first rubber pad 54, closing the connecting pipe 51 to prevent the condensate inside the drain pipe 1 from flowing back into the blade 4. When the connecting pipe 51 rotates to the vertical position, the block 56 is lifted away from the first rubber pad 54 due to gravity, opening the connecting pipe 51, allowing the condensate to enter the connecting pipe 51 and then enter the drain pipe 1 through the outlet 52.

[0029] In the specific implementation process, it is worth noting that the blade 4, drain pipe 1, and connecting pipe 51 rotate simultaneously. When draining water from the blade 4, when the blade 4 rotates to the top of the drain pipe 1, the connecting pipe 51 is in a vertical state. At this time, due to gravity, the block 56 descends, compressing the spring 57. The block 56 then contacts the second rubber pad 55, which prevents condensate from entering the spring 57. The block 56 then leaves the first rubber pad 54 inside the annular sleeve 53. The first rubber pad 54 increases the contact between the block 56 and the spring 57. The sealing between the annular sleeves 53 is maintained. At this time, the connecting pipe 51 is opened, and the plug 56 descends below the outlet 52, opening the outlet 52. At this time, the condensate inside the blade 4 will enter the connecting pipe 51 and enter the drain pipe 1 through the outlet 52. The condensate is discharged from the inside of the blade 4 through the drain pipe 1. When the blade 4 rotates to the bottom of the drain pipe 1, the plug 56 moves, the spring 57 rebounds, and the plug 56 contacts the first rubber pad 54, closing the connecting pipe 51 to prevent the condensate inside the drain pipe 1 from flowing back into the blade 4, thus achieving the discharge of the condensate inside the blade 4.

[0030] Furthermore, the flow guiding device 6 includes a ramp 61 and a water guiding channel 62. The ramp 61 is formed at the top of the inner wall of the blade 4; the water guiding channel 62 is formed on the side wall of the blade 4. When condensate adheres to the inner wall of the blade 4, the ramp 61 uses its tilt angle to make the condensate flow towards the side wall of the blade 4 under the action of gravity. The water guiding channel 62 further guides the condensate to flow down along a specific path, thereby accelerating the flow of condensate and reducing the accumulation of condensate on the inner wall of the blade 4. Through the cooperation of the ramp 61 and the water guiding channel 62, the flow of condensate adhering to the inner wall of the blade 4 is accelerated.

[0031] In the specific implementation process, it is worth noting that when condensate water adheres to the inner wall of the blade 4, the ramp 61 uses its tilt angle to make the condensate water flow to the side wall of the blade 4 under the action of gravity, and the water guide groove 62 further guides the condensate water to flow down along a specific path, thereby accelerating the flow of condensate water and reducing the accumulation of condensate water on the inner wall of the blade 4.

[0032] Furthermore, the auxiliary device 7 includes a connecting ear 71, a bolt 72, a sealing ring 73, a mounting part 74, and an air intake part 75. The connecting ear 71 is fixedly connected to the side wall of the blade 4. When replacing the blade 4, the operator rotates the bolt 72 to remove it from the drain pipe 1. At this time, the blade 4 is released from its fixation and removed, fitting against the surface of the drain pipe 1. The bolt 72 is threadedly connected to the inner wall of the connecting ear 71 and the inner wall of the drain pipe 1, respectively. The sealing ring 73 is fixedly connected to the inner wall of the blade 4, and its outer wall fits against the drain pipe 1. The surface; the mounting part 74 is provided in two sets, and is respectively provided at both ends of the drain pipe 1; the air intake part 75 is provided inside the air intake pipe 2; the replacement blade 4 is placed in the drain pipe 1, and the replacement blade 4 drives the connecting ear 71 on the outer wall to move and fit on the drain pipe 1. After completion, the operator rotates the bolt 72 on the connecting ear 71 in the opposite direction and rotates the bolt 72 into the drain pipe 1 to fix the blade 4. The blade 4 is replaced by the cooperation of the connecting ear 71 and the bolt 72, and the sealing of the blade 4 is improved by the sealing ring 73.

[0033] In the specific implementation process, it is worth noting that when replacing the blade 4, the worker rotates the bolt 72 to remove the bolt 72 from the drain pipe 1. At this time, the blade 4 is released from its fixation and removed. The replacement blade 4 is placed in the drain pipe 1. The replacement blade 4 drives the connecting lug 71 on the outer wall to move and fit onto the drain pipe 1. After completion, the worker rotates the bolt 72 on the connecting lug 71 in the opposite direction to rotate the bolt 72 into the drain pipe 1 and fix the blade 4 in place, thus realizing the replacement of the blade 4.

[0034] Furthermore, the mounting part 74 includes a mounting plate 741 and mounting holes 742. The mounting holes 742 are circular in shape. There are six mounting holes 742 on one mounting plate 741. The mounting plate 741 is fixedly connected to the end of the drain pipe 1. The mounting holes 742 are formed on the surface of the mounting plate 741. The operator installs the drain pipe 1 into the external hollow paddle dryer through the mounting holes 742 on both sides of the mounting plate 741, thereby fixing the paddle 4 into the dryer. The paddle 4 is installed into the interior of the hollow paddle dryer as a whole through the mounting plate 741 and the mounting holes 742.

[0035] In the specific implementation process, it is worth noting that the mounting hole 742 is circular in shape, and there are six mounting holes 742 on a mounting plate 741. The workers can install the drain pipe 1 into the external hollow paddle dryer through the mounting holes 742 on the mounting plates 741 on both sides, thereby fixing the paddle 4 into the dryer and realizing the overall installation of the paddle 4.

[0036] Furthermore, the air inlet 75 includes a vertical pipe 751 and an air outlet 752. The vertical pipe 751 is connected to the inner wall of the air inlet pipe 2, and one end passes through the drain pipe 1 and extends into the interior of the blade 4. When drying the material, the external high-temperature steam enters the vertical pipe 751 through the air inlet pipe 2, and the air outlet 752 is opened at the end of the vertical pipe 751 away from the air inlet pipe 2. Then, it enters the blade 4 through the air outlet 752. The blade 4 dries the material through heat exchange. The high-temperature steam inside the air inlet pipe 2 enters the blade 4 through the cooperation of the vertical pipe 751 and the air outlet 752.

[0037] In the specific implementation process, it is worth noting that when drying the material, the external high-temperature steam enters the vertical pipe 751 through the air inlet pipe 2, and then enters the blade 4 through the air outlet 752. The blade 4 dries the material through heat exchange.

[0038] Specifically, firstly, the worker installs the drain pipe 1 into the external hollow paddle dryer through the mounting holes 742 on the mounting plates 741 on both sides, thereby fixing the paddle 4 into the dryer. Then, the external high-temperature steam enters the vertical pipe 751 through the air inlet pipe 2, and then enters the paddle 4 through the air outlet 752. The paddle 4 dries the material through heat exchange. When the paddle 4 is to be replaced, the worker rotates the bolt 72 to remove it from the drain pipe 1. At this time, the fixation of the paddle 4 is released, and the paddle 4 is removed. The replacement paddle 4 is placed in the drain pipe 1. The replacement paddle 4 drives the connecting lug 71 on the outer wall to move and fit against the drain pipe 1. After completion, the worker rotates the bolt 72 on the connecting lug 71 in the opposite direction to rotate the bolt 72 into the drain pipe 1, fixing the paddle 4 in place. When draining the paddle 4, when the paddle 4 rotates to the top of the drain pipe 1, the connecting pipe 51... In the vertical position, the block 56 descends due to gravity, compressing the spring 57. The block 56 then contacts the second rubber pad 55 and leaves the first rubber pad 54 inside the annular sleeve 53. At this time, the connecting pipe 51 opens, and the block 56 descends below the outlet 52, opening the outlet 52. The condensate inside the blade 4 flows towards the side wall of the blade 4 under gravity due to the inclination angle of the ramp 61. The guide channel 62 further guides the condensate down a specific path, into the connecting pipe 51, and into the drain pipe 1 through the outlet 52. The condensate is discharged from the inside of the blade 4 through the drain pipe 1. When the blade 4 rotates to the bottom of the drain pipe 1, the block 56 moves, the spring 57 rebounds, and the block 56 contacts the first rubber pad 54, closing the connecting pipe 51 and preventing the condensate inside the drain pipe 1 from flowing back into the blade 4, thus achieving the discharge of the condensate inside the blade 4.

[0039] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A paddle drainage mechanism for a hollow paddle dryer, comprising a drain pipe (1), characterized in that: An air inlet pipe (2) is provided inside the drain pipe (1), and a connecting column (3) is fixedly connected between the drain pipe (1) and the air inlet pipe (2). A paddle (4) is provided on the outer wall of the drain pipe (1). The paddle drainage mechanism of the hollow paddle dryer further includes: A drainage device (5) is provided outside the air inlet pipe (2); A flow guiding device (6) is disposed inside the blade (4); An auxiliary device (7) is disposed outside the drain pipe (1); The condensate inside the blade (4) is drained by the drainage device (5), the flow guide device (6) accelerates the flow of the condensate adhering to the inner wall of the blade (4), and the blade is disassembled and installed by the auxiliary device (7).

2. The paddle drainage mechanism of a hollow paddle dryer according to claim 1, characterized in that: The drainage device (5) includes: A connecting pipe (51) is connected to the interior of the drain pipe (1), and its end extends into the interior of the drain pipe (1); The outlet (52) is located on the side wall of the connecting pipe (51); An annular sleeve (53) is fixedly connected to the inner wall of the connecting pipe (51); The first rubber pad (54) is fixedly connected to the inner wall of the annular sleeve (53); The second rubber pad (55) is fixedly connected to the inner wall of the connecting tube (51) on the side away from the annular sleeve (53); The spring (57) is fixedly connected to the bottom of the inner wall of the connecting tube (51); The block (56) is fixedly connected to the top of the spring (57); When the connecting pipe (51) is rotated to the vertical position, the block (56) is moved away from the first rubber pad (54) due to gravity, causing the connecting pipe (51) to open. Condensate enters the connecting pipe (51) and enters the drain pipe (1) through the outlet (52).

3. The paddle drainage mechanism of a hollow paddle dryer according to claim 1, characterized in that: The flow guiding device (6) includes: A ramp (61) is formed at the top of the inner wall of the blade (4); A water guide channel (62) is provided on the side wall of the blade (4); The slope (61) and the water guide channel (62) work together to accelerate the flow of condensate water adhering to the inner wall of the blade (4).

4. The paddle drainage mechanism of a hollow paddle dryer according to claim 1, characterized in that: The auxiliary device (7) includes: Connecting ear (71) is fixedly connected to the side wall of the blade (4) and fits against the surface of the drain pipe (1); Bolts (72) are threaded to the inner wall of the connecting lug (71) and the inner wall of the drain pipe (1), respectively; A sealing ring (73) is fixedly connected to the inner wall of the blade (4), and its outer wall is attached to the surface of the drain pipe (1). The mounting part (74) is provided in two sets, and is respectively located at both ends of the drain pipe (1); An air intake section (75) is disposed inside the air intake pipe (2); The blade (4) is replaced by the cooperation of the connecting ear (71) and the bolt (72), and the sealing performance of the blade (4) is improved by the sealing ring (73).

5. The paddle drainage mechanism of a hollow paddle dryer according to claim 4, characterized in that: The mounting part (74) includes: Mounting plate (741) is fixedly connected to the end of the drain pipe (1); Mounting holes (742) are formed on the surface of the mounting plate (741); The blade (4) is installed as a whole into the interior of the hollow blade dryer through the mounting plate (741) and the mounting hole (742).

6. The paddle drainage mechanism of a hollow paddle dryer according to claim 4, characterized in that: The air intake (75) includes: The vertical pipe (751) is connected to the inner wall of the air inlet pipe (2), and one end passes through the drain pipe (1) and extends into the interior of the blade (4); An air outlet (752) is located at the end of the vertical pipe (751) away from the air inlet pipe (2); The high-temperature steam inside the air inlet pipe (2) enters the blade (4) through the cooperation of the vertical pipe (751) and the air outlet (752).

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