Feeding device of color master batch heating machine

Abstract

The utility model relates to a feeding device of a color master batch heating machine. The feeding device comprises a rack and a feeding box, a discharging port is formed in the feeding box, a feeding port is formed in the feeding box, an opening and closing assembly is connected into the discharging port and used for opening or closing the discharging port, the rack is connected with a lifting assembly, and the lifting assembly is used for driving the feeding box to move in the vertical direction. When the discharging port is formed right above the feeding end of the heating machine body, the opening and closing assembly opens the discharging port, and color master batches in the feeding box are discharged through the discharging port and enter the heating machine body, so that the labor cost and time consumed when the color master batches are fed are reduced, and the feeding efficiency is improved.

Description

Technical Field

[0001] This application relates to the field of masterbatch heating machines, and more particularly to a feeding device for a masterbatch heating machine. Background Technology

[0002] Polyester, also known as polyester fiber, is a chemical fiber made from raw materials such as polyester, polypropylene, and nylon. These materials are meltable, flowable, and not easily decomposed. They are usually processed and shaped by melt spinning.

[0003] Chinese patent CN214830818U discloses a melt spinning assembly capable of improving the quality of ultrafine denier filaments. The assembly includes a barrel, a shaft, and a motor. An air inlet pipe is located on one side of the top of the barrel, and an air outlet pipe is located on the other side of the top of the barrel. Both the air inlet and outlet pipes are electrically connected to the barrel. An agitator pin is fixedly installed at the bottom of the shaft, and the agitator pin is connected to the motor via a shaft drive. A feed pipe is fixedly installed at the top of the barrel, and a sealing cap is installed at the top of the feed pipe. During production, polymer enters the barrel through the feed pipe. The polymer is typically a color masterbatch.

[0004] Regarding the aforementioned technologies, when feeding polymers into the barrel, operators need to repeatedly shovel masterbatch into the feed pipe. The feed pipe is located at the top of the barrel, which makes the operation inconvenient and affects work efficiency. Utility Model Content

[0005] In order to reduce the manpower and time consumed in feeding masterbatch and improve work efficiency, this application provides a feeding device for a masterbatch heater.

[0006] The feeding device for a masterbatch heater provided in this application adopts the following technical solution:

[0007] A feeding device for a masterbatch heating machine includes a frame and a feeding box. The feeding box has a discharge port at one end along its length and a feed port at the top. An opening and closing component is connected inside the discharge port to open or close the discharge port. The frame is connected to a lifting component to move the feeding box vertically. When the feeding box feeds material into the heating machine body, the discharge port is located above the feed end of the heating machine body.

[0008] By adopting the above technical solution, during use, the masterbatch enters the feeding box through the inlet. The lifting component drives the feeding box to move vertically upward, thereby bringing the feeding box and the masterbatch closer to the feeding end of the heating machine body. When the discharge port is located directly above the feeding end of the heating machine body, the opening and closing component opens the discharge port, and the masterbatch in the feeding box is discharged through the discharge port and enters the heating machine body. This reduces the labor cost and time consumed in feeding the masterbatch and improves the feeding efficiency.

[0009] Optionally, the frame has a moving groove, the length direction of which is consistent with the vertical direction. The lifting assembly includes a lead screw, a first motor, and a slider. The length direction of the lead screw is consistent with the vertical direction. The first motor is connected to the frame, and the output shaft of the first motor is connected to the lead screw. The slider is threaded onto the lead screw and slides vertically within the moving groove. The slider is connected to one end of the feed box along the width direction of the feed box.

[0010] By adopting the above technical solution, the first motor drives the lead screw to rotate, so that the slider slides vertically and is connected to the moving groove, thereby driving the feed box to move vertically, so as to facilitate the feed box to move closer to or further away from the feed end of the heating machine body.

[0011] Optionally, a guide plate is connected to one side wall of the feed box along its length direction. The guide plate is located below the discharge port. The length direction of the guide plate is consistent with the width direction of the feed box. One end of the guide plate along its width direction is connected to the feed box, and the other end of the guide plate is inclined towards the side away from the discharge port. The guide plate is used to guide the color masterbatch particles into the heating machine body.

[0012] By adopting the above technical solution, when the feed box feeds into the heating machine body, the discharge port opens, and the masterbatch is discharged from the feed box through the discharge port. The masterbatch is guided into the heating machine body by the guide plate, which facilitates the feeding of the masterbatch into the heating machine body.

[0013] Optionally, the guide plate is a telescopic plate, which includes a first plate and a second plate. One end of the first plate is connected to the feed box along its width direction, and the other end of the first plate is inclined away from the discharge port. The width direction of the second plate is consistent with the width direction of the first plate, and the second plate is slidably connected to the first plate along its width direction. The feed box is connected to a pusher, which is used to push the second plate to move along its width direction.

[0014] By adopting the above technical solution, the guide plate is set as a telescopic plate, which can reduce the collision between the guide plate and the heating machine body when the guide plate moves with the feed box, and reduce the space occupied by the guide plate. When the feed box moves, the second plate is slidably connected to the first plate, and the overlap between the first plate and the second plate increases, which shortens the guide plate, thereby facilitating the movement of the feed box. When the feed box moves to above the feed end of the heating machine body, the pusher drives the second plate to move along the width direction of the second plate, so that the second plate moves away from the first plate along its width direction, reducing the overlap between the first plate and the second plate, and extending the guide plate, thereby facilitating the feeding of color masterbatch into the heating machine body along the guide plate.

[0015] Optionally, a sliding groove is provided on the side of the first plate away from the feed box. The length direction of the sliding groove is consistent with the length direction of the second plate. The second plate is embedded in the sliding groove and is slidably connected to the sliding groove along its width direction. A limiting block is connected to the bottom of the second plate. A limiting hole is provided on the inner wall of the bottom of the sliding groove for the limiting block to be embedded. The length direction of the limiting hole is consistent with the width direction of the second plate. The limiting block is slidably connected to the limiting hole along the width direction of the second plate.

[0016] By adopting the above technical solution, when the telescopic guide plate is extended, the second plate is slidably connected to the sliding groove along its width direction, and the limiting block is slidably connected to the limiting hole along the width direction of the second plate, so that the second plate moves stably in a predetermined direction.

[0017] Optionally, a rotating shaft is connected to one side of the feed box along its width direction. The length direction of the rotating shaft is consistent with the width direction of the feed box. The rotating shaft is rotatably connected to the slider. An elastic element is connected to the rotating shaft. The rotating shaft is connected to the slider through the elastic element. The elastic element is used to drive the rotating shaft to rotate and drive the feed box to be set horizontally. A baffle is connected to the frame. The baffle is located above the feed box. The bottom of the baffle is used to contact the end of the feed box near the discharge port.

[0018] By adopting the above technical solution, when the feeding box feeds into the heating machine body, the lifting component drives the feeding box to move vertically upward. After the top of the feeding box contacts the baffle, the lifting component continues to drive the feeding box to move. One end of the feeding box is tilted downward due to the obstruction of the baffle, so that the discharge port faces the heating machine body, thereby accelerating the discharge of masterbatch from the feeding box and further improving work efficiency. After feeding is completed, the discharge port is closed, and the lifting component drives the feeding box to move vertically downward, so that the feeding box moves away from the baffle. Driven by the elastic force of the elastic element, the feeding box rotates and resets, so that the feeding box returns to a horizontal setting.

[0019] Optionally, the slider is connected to a support plate, which is located below the end of the feed box away from the discharge port. When the feed box is set horizontally, the support plate is in contact with the bottom of the feed box.

[0020] By adopting the above technical solution, after the feeding is completed, when the feeding box moves away from the baffle, the elastic element drives the feeding box to rotate, and when the feeding box rotates, the support plate blocks the feeding box, thereby reducing the situation of excessive overturning of the feeding box.

[0021] Optionally, a connecting groove is provided on the inner wall of the top of the discharge port. The length direction of the connecting groove is consistent with the height direction of the feed box. The opening and closing assembly includes a door panel and a moving part. The door panel is slidably connected to the connecting groove and the discharge port along the height direction of the feed box. The moving part is connected to the feed box and is used to drive the door panel to move along the height direction of the feed box. The door panel is used to seal the discharge port.

[0022] By adopting the above technical solution, when the feeding box feeds the heating machine body, the moving part drives the door plate to move along the height direction of the feeding box, so that the door plate moves away from the discharge port and is embedded in the connecting groove, thereby opening the discharge port. After the feeding is completed, the moving part drives the door plate to move, and the door plate is embedded in the discharge port, thereby closing the discharge port, which facilitates the opening or closing of the discharge port.

[0023] In summary, this application includes at least one of the following beneficial technical effects:

[0024] 1. During use, the masterbatch enters the feeding box through the inlet. The lifting component moves the feeding box vertically upward, thereby bringing the feeding box and the masterbatch closer to the feeding end of the heating machine body. When the discharge port is located directly above the feeding end of the heating machine body, the opening and closing component opens the discharge port, and the masterbatch in the feeding box is discharged through the discharge port and enters the heating machine body. This reduces the labor cost and time consumed in feeding the masterbatch and improves the feeding efficiency.

[0025] 2. The guide plate is designed as a telescopic plate, which can reduce the collision between the guide plate and the heating machine body when the guide plate moves with the feed box, and reduce the space occupied by the guide plate. When the feed box moves, the second plate is slidably connected to the first plate, which increases the overlap between the first plate and the second plate, thus shortening the guide plate and facilitating the movement of the feed box. When the feed box moves to above the feed end of the heating machine body, the pusher drives the second plate to move along the width direction of the second plate, so that the second plate moves away from the first plate along its width direction, reducing the overlap between the first plate and the second plate, and extending the guide plate, thus facilitating the feeding of masterbatch into the heating machine body along the guide plate;

[0026] 3. When the feeding box feeds into the heating machine body, the lifting component drives the feeding box to move vertically upward. After the top of the feeding box contacts the baffle, the lifting component continues to drive the feeding box to move. One end of the feeding box is tilted downward due to the obstruction of the baffle, so that the discharge port faces the heating machine body, thereby accelerating the discharge of masterbatch from the feeding box and further improving working efficiency. After feeding is completed, the discharge port is closed, and the lifting component drives the feeding box to move vertically downward, so that the feeding box moves away from the baffle. Driven by the elastic force of the elastic element, the feeding box rotates and resets, so that the feeding box returns to a horizontal setting. Attached Figure Description

[0027] Figure 1 This is a three-dimensional structural diagram of this embodiment.

[0028] Figure 2 This is a top view of this embodiment.

[0029] Figure 3 This is the embodiment. Figure 2 Sectional view along the AA direction.

[0030] Figure 4 This is a front view of this embodiment.

[0031] Figure 5 This is the embodiment. Figure 4 A cross-sectional view along the CC direction.

[0032] Figure 6 This is the embodiment. Figure 3 Enlarged view of section B.

[0033] Explanation of reference numerals in the attached drawings: 100, frame; 110, moving groove; 120, baffle; 200, lifting assembly; 210, lead screw; 220, first motor; 230, slider; 231, support plate; 300, feed box; 310, discharge port; 311, connecting groove; 312, first hole; 320, feed inlet; 330, opening and closing plate; 331, first magnetic block; 340, second magnetic block; 350, rotating shaft; 351, torsion spring; 360, guide plate; 370, second cylinder; 400, opening and closing assembly; 410, door panel; 411, first block; 420, first cylinder; 500, guide plate; 510, first plate; 511, sliding groove; 512, limiting hole; 520, second plate; 521, limiting block. Detailed Implementation

[0034] The following is in conjunction with the appendix Figure 1-6 This application will be described in further detail.

[0035] This application discloses a feeding device for a masterbatch heater. (Refer to...) Figure 1 and Figure 2 A feeding device for a masterbatch heating machine includes a frame 100, a lifting assembly 200, and a feeding box 300. The lifting assembly 200 is connected to the frame 100, and the feeding box 300 is also connected to the frame 100 via the lifting assembly 200. The lifting assembly 200 is used to move the feeding box 300 vertically. The feeding box 300 has a discharge port 310 at one end along its length and a feed inlet 320 at its top. An opening and closing assembly 400 is connected inside the discharge port 310, which is used to open or close the discharge port 310. By moving the feeding box 300 vertically and feeding it into the heating machine body, the manpower and time consumed in feeding masterbatch are saved, thus improving work efficiency.

[0036] Reference Figure 1 and Figure 3The length of the feed inlet 320 is aligned with the width of the feed box 300. A closing plate 330 is connected to the top of the feed box 300 to seal the feed inlet 320. The length of the closing plate 330 is aligned with the width of the feed box 300. One end of the closing plate 330 is hinged to the top of the feed box 300 along its width direction. A first magnetic block 331 is embedded at the other end of the closing plate 330. A second magnetic block 340 is embedded at the top of the feed box 300. When the closing plate 330 seals the feed inlet 320, the first magnetic block 331 and the second magnetic block 340 attract each other.

[0037] Reference Figure 1 The frame 100 has two movable slots 110, which are respectively located on both sides of the feed box 300 along the width direction of the feed box 300. The length direction of the movable slot 110 is consistent with the vertical direction. The lifting assembly 200 includes a lead screw 210, a first motor 220, and a slider 230. The length direction of the lead screw 210 is consistent with the vertical direction, and its two ends are rotatably connected to the corresponding inner walls of the movable slot 110. The first motor 220 is connected to the frame 100 and is located above the lead screw 210. The output shaft of the first motor 220 is connected to the top of the lead screw 210. The slider 230 is embedded in the movable slot 110 and threaded onto the lead screw 210. The slider 230 is slidably connected to the movable slot 110 along the vertical direction. The first motor 220 drives the lead screw 210 to rotate, and causes the slider 230 to slide vertically and connect to the moving groove 110. The feed box 300 moves with the slider 230, so that the feed box 300 moves closer to or further away from the masterbatch heater.

[0038] Reference Figure 2 and Figure 4 A rotating shaft 350 is connected to the feed box 300 along its width direction. The length direction of the rotating shaft 350 is consistent with the width direction of the feed box 300. The rotating shaft 350 is rotatably connected to the slider 230. An elastic element, namely a torsion spring 351, is connected to the rotating shaft 350. The torsion spring 351 is sleeved on the rotating shaft 350, with one end connected to the rotating shaft 350 and the other end connected to the side wall of the feed box 300. When the feed box 300 is tilted, the torsion spring 351 deforms.

[0039] Reference Figure 1 The frame 100 is connected to a baffle 120. The length of the baffle 120 is consistent with the width of the feed box 300. The baffle 120 is located above the end of the feed box 300 near the discharge port 310. The bottom of the baffle 120 is used to contact the top of the feed box 300.

[0040] Reference Figure 3 and Figure 4The slider 230 is connected to a support plate 231, the length of which is aligned with the width of the feed box 300. The support plate 231 is located below the feed box 300 on the side away from the baffle 120. When the feed box 300 is horizontal, the support plate 231 contacts the bottom of the feed box 300. When the feed box 300 moves and approaches the feeding end of the heating machine body, the feed box 300 contacts the baffle 120. As the feed box 300 continues to move upward, the baffle 120 blocks the feed box 300, thereby causing the feed box 300 to tilt. The torsion spring 351 deforms, and the feed box 300 has an outlet 310 that is tilted to facilitate the discharge of masterbatch.

[0041] Reference Figure 5 Two guide plates 360 are connected inside the feed box 300. The length direction of the guide plates 360 is consistent with the height direction of the feed box 300. The two ends of the guide plates 360 along their length direction are respectively connected to the inner wall of the corresponding side of the feed box 300. The two guide plates 360 are distributed at intervals along the width direction of the feed box 300. The guide plates 360 are located on both sides of the discharge port 310 along the width direction of the feed box 300. The inner wall of one side of the guide plate 360 ​​along its width direction is connected to the inner wall of the feed box 300 along its width direction. The other end of the guide plate 360 ​​is inclined towards the side near the feed port 320 and connected to the inner wall of the feed box 300 near the discharge port 310.

[0042] Reference Figure 3 and Figure 6 A connecting groove 311 is provided on the inner wall of the top of the discharge port 310, and the length direction of the connecting groove 311 is consistent with the height direction of the feed box 300. The opening and closing assembly 400 includes a door panel 410 and a moving part. The length direction of the door panel 410 is consistent with the height direction of the feed box 300. The door panel 410 is embedded in the connecting groove 311 and slidably connected to the discharge port 310 along the height direction of the feed box 300. The door panel 410 is used to seal the discharge port 310. The moving part is a first cylinder 420, which is connected to the outer wall of one end of the feed box 300 along its length direction, and the length direction of the first cylinder 420 is consistent with the height direction of the feed box 300. The first cylinder 420 is located above the discharge port 310.

[0043] Reference Figure 3 and Figure 6A first hole 312 is formed on the outer wall of the feed box 300 along its length and near the end of the first cylinder 420. The length of the first hole 312 is consistent with the height of the feed box 300, and the first hole 312 communicates with the connecting groove 311. A first piece 411 is connected to the door panel 410 along the length of the feed box 300 and near the end of the first cylinder 420. The first piece 411 is embedded in the first hole 312 and is slidably connected to the first hole 312 along its length. The piston rod of the first cylinder 420 is connected to the first piece 411.

[0044] Reference Figure 1 and Figure 3 A guide plate 500 is connected to one end of the outer wall of the feed box 300 along its length. The guide plate 500 is located below the discharge port 310. The guide plate 500 is a telescopic plate and includes a first plate 510 and a second plate 520. The length direction of the first plate 510 is consistent with the width direction of the feed box 300, and the length direction of the second plate 520 is consistent with the length direction of the first plate 510. The width direction of the second plate 520 is consistent with the width direction of the first plate 510. Both the first plate 510 and the second plate 520 have a U-shaped cross-section. One end of the first plate 510 is connected to the feed box 300 along its width direction, and the other end of the first plate 510 is inclined downwards towards the side away from the discharge port 310.

[0045] Reference Figure 3 The first plate 510 has a sliding groove 511 on the side away from the feed box 300. The sliding groove 511 has a U-shaped cross-section, and its depth direction is consistent with the length direction of the second plate 520. The second plate 520 is embedded in the sliding groove 511 and is slidably connected to the sliding groove 511 along its width direction. A limiting block 521 is connected to the bottom of the second plate 520. A limiting hole 512 is formed on the inner wall of the bottom of the sliding groove 511. The length direction of the limiting hole 512 is consistent with the width direction of the second plate 520. The limiting block 521 is embedded in the limiting hole 512 and is slidably connected to the limiting hole 512 along the width direction of the second plate 520.

[0046] Reference Figure 3 The feed box 300 is connected to a pusher, which is a second cylinder 370. The cylinder body of the second cylinder 370 is hinged to the bottom of the feed box 300, and the piston rod of the second cylinder 370 is hinged to the limit block 521. When the feed box 300 feeds into the heating machine body, the piston rod of the second cylinder 370 extends, pushing the second plate 520 to move along its width direction, so that the guide plate 500 extends, thereby facilitating the feeding of masterbatch into the heating machine body.

[0047] The implementation principle of the feeding device of the masterbatch heater according to an embodiment of this application is as follows: the masterbatch enters the feeding box 300 through the feeding port 320, the opening and closing plate 330 is rotated and the opening and closing plate 330 seals the feeding port 320. At the same time, the first magnetic block 331 and the second magnetic block 340 attract each other, so that the opening and closing plate 330 is stably connected to the feeding box 300. The first motor 220 drives the lead screw 210 to rotate, the slider 230 moves upward in the vertical direction, and drives the feeding box 300 to move along with the slider 230. After the top of the feeding box 300 contacts the support plate 231, when the feeding box 300 continues to move upward, one end of the feeding box 300 is squeezed by the support plate 231, so that one end of the feeding box 300 is tilted downward, and the rotating shaft 350 rotates, the torsion spring 351 deforms, so that the discharge port 310 is tilted towards the feeding end of the heater body.

[0048] The second cylinder 370 drives the second plate 520 to move along the width direction of the second plate 520, causing the guide plate 500 to extend, thereby facilitating the feeding of color masterbatch into the heating machine body. This causes the first cylinder 420 to drive the first block 411 to move along the height direction of the feed box 300, and the door plate 410 moves with the first block 411, causing the door plate 410 to move away from the discharge port 310, opening the discharge port 310, allowing the color masterbatch to be discharged through the discharge port 310 and move along the guide plate 500 into the heating machine body. This facilitates the feeding of color masterbatch, reduces the manpower and time consumed in feeding color masterbatch, and improves work efficiency.

[0049] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A feeding device for a masterbatch heating machine, characterized in that: The device includes a frame (100) and a feed box (300). The feed box (300) has a discharge port (310) at one end along its length and a feed inlet (320) at the top. An opening and closing assembly (400) is connected inside the discharge port (310) to open or close the discharge port (310). The frame (100) is connected to a lifting assembly (200) to drive the feed box (300) to move vertically. When the feed box (300) feeds into the heating machine body, the discharge port (310) is located above the feed end of the heating machine body.

2. The feeding device for a masterbatch heating machine according to claim 1, characterized in that: The frame (100) has a moving groove (110) with the length direction of the moving groove (110) aligned with the vertical direction. The lifting assembly (200) includes a lead screw (210), a first motor (220), and a slider (230). The length direction of the lead screw (210) is aligned with the vertical direction. The first motor (220) is connected to the frame (100). The output shaft of the first motor (220) is connected to the lead screw (210). The slider (230) is threaded onto the lead screw (210). The slider (230) is slidably connected to the moving groove (110) in the vertical direction. The slider (230) is connected to one side of the feed box (300) along the width direction of the feed box (300).

3. The feeding device for a masterbatch heating machine according to claim 1, characterized in that: A guide plate (500) is connected to one side wall of the feed box (300) along its length direction. The guide plate (500) is located below the discharge port (310). The length direction of the guide plate (500) is consistent with the width direction of the feed box (300). One end of the guide plate (500) along its width direction is connected to the feed box (300), and the other end of the guide plate (500) is inclined towards the side away from the discharge port (310). The guide plate (500) is used to guide the color masterbatch particles into the heating machine body.

4. The feeding device for a masterbatch heating machine according to claim 3, characterized in that: The guide plate (500) is a telescopic plate. The guide plate (500) includes a first plate (510) and a second plate (520). One end of the first plate (510) is connected to the feed box (300) along its width direction. The other end of the first plate (510) is inclined towards the side away from the discharge port (310). The width direction of the second plate (520) is consistent with the width direction of the first plate (510). The second plate (520) is slidably connected to the first plate (510) along its width direction. The feed box (300) is connected to a pusher. The pusher is used to push the second plate (520) to move along its width direction.

5. The feeding device for a masterbatch heating machine according to claim 4, characterized in that: The first plate (510) has a sliding groove (511) on the side away from the feed box (300). The length direction of the sliding groove (511) is consistent with the length direction of the second plate (520). The second plate (520) is embedded in the sliding groove (511). The second plate (520) is slidably connected to the sliding groove (511) along its width direction. The bottom of the second plate (520) is connected to a limiting block (521). The inner wall of the bottom of the sliding groove (511) has a limiting hole (512) for the limiting block (521) to be embedded. The length direction of the limiting hole (512) is consistent with the width direction of the second plate (520). The limiting block (521) is slidably connected to the limiting hole (512) along the width direction of the second plate (520).

6. The feeding device for a masterbatch heating machine according to claim 2, characterized in that: The feed box (300) is connected to a rotating shaft (350) along one side of its width direction. The length direction of the rotating shaft (350) is consistent with the width direction of the feed box (300). The rotating shaft (350) is rotatably connected to the slider (230). The rotating shaft (350) is connected to an elastic element. The rotating shaft (350) is connected to the slider (230) through the elastic element. The elastic element is used to drive the rotating shaft (350) to rotate and drive the feed box (300) to be set horizontally. The frame (100) is connected to a baffle (120). The baffle (120) is located above the feed box (300). The bottom of the baffle (120) is used to contact the end of the feed box (300) near the outlet (310).

7. The feeding device for a masterbatch heating machine according to claim 6, characterized in that: The slider (230) is connected to a support plate (231). The support plate (231) is located below the end of the feed box (300) away from the discharge port (310). When the feed box (300) is set horizontally, the support plate (231) contacts the bottom of the feed box (300).

8. The feeding device for a masterbatch heating machine according to claim 1, characterized in that: The top inner wall of the discharge port (310) is provided with a connecting groove (311). The length direction of the connecting groove (311) is consistent with the height direction of the feed box (300). The opening and closing assembly (400) includes a door panel (410) and a moving part. The door panel (410) is slidably connected to the connecting groove (311) and the discharge port (310) along the height direction of the feed box (300). The moving part is connected to the feed box (300). The moving part is used to drive the door panel (410) to move along the height direction of the feed box (300). The door panel (410) is used to seal the discharge port (310).

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