A multi-pipe chimney

Abstract

This application relates to a multi-pipe chimney, belonging to the field of chimney technology. It includes a flue, with at least two pairs of connecting rods fixedly installed on the inner wall of the flue. A base is fixedly installed inside the flue, and a central rod is installed on the top wall of the base, fixed to the connecting rods. A partition assembly is provided between the central rod and each pair of connecting rods. The partition assembly includes a driving part and a partitioning part, with the partitioning part located between the central rod and the driving part. The driving part drives the partitioning part to unfold, thereby dividing the flue into at least two independent channels. This application has the advantages of wide applicability of the chimney and reduced floor space.

Description

Technical Field

[0001] This application relates to the field of chimneys, and more particularly to a multi-pipe chimney. Background Technology

[0002] A chimney is a means of expelling gases or smoke caused by fire; it is a tall structure that vents smoke into the upper atmosphere.

[0003] Currently, there is a large amount of hazardous waste in industry that needs to be treated. The main substances in hazardous waste that cause environmental damage are organic matter and heavy metals. Therefore, the most effective and thorough way to treat hazardous waste is incineration.

[0004] However, since a large amount of hazardous waste needs to be incinerated, multiple incineration sites are set up to incinerate the hazardous waste. Incineration will produce a large amount of flue gas. Therefore, each incineration site needs to be equipped with a chimney to discharge the flue gas. This method is not only inapplicable, but will also increase the area occupied. Summary of the Invention

[0005] To address the issue that each incineration site requires a chimney for flue gas emission, which is not only impractical but also increases the area required, this application provides a multi-pipe chimney.

[0006] The technical solution for a multi-pipe chimney provided in this application is as follows:

[0007] A multi-pipe chimney includes a flue, at least two pairs of connecting rods are fixedly disposed on the inner wall of the flue, a base is fixedly disposed inside the flue, a central rod is disposed on the top wall of the base and the central rod is fixed to the connecting rods, a partition assembly is disposed between the central rod and each pair of connecting rods, the partition assembly includes a driving part and a partition part, the partition part is disposed between the central rod and the driving part, the driving part drives the partition part to unfold, so as to divide the flue into at least two independent channels.

[0008] By adopting the above technical solution, when in use, the drive unit is activated to move the partition part away from the center rod and unfold it. After it is fully unfolded, the flue can be divided into multiple independent channels for flue gas discharge, thus eliminating the need to design multiple flues to meet the needs of multiple flue gas discharges. This not only improves the applicability of the flue but also reduces the floor space occupied.

[0009] Optionally, the drive unit includes a lead screw, a sliding rod, and a drive motor. Each pair of connecting rods has a sliding groove on one side opposite to the other. The lead screw is rotatably mounted in the sliding groove on the connecting rod near the base. The base has a cavity inside. The drive motor is mounted in the cavity and its output end is connected to the lead screw on the connecting rod near the base via a reversing component. The end of the sliding rod is slidably connected in the sliding groove, and the lead screw passes through the sliding rod and is threadedly connected to the sliding rod.

[0010] By adopting the above technical solution, when in use, the drive motor is started and controlled to rotate forward, so as to drive the lead screw to rotate. The rotation of the lead screw will drive the sliding rod to move the partition part away from the center rod and unfold it. After it is fully unfolded, the flue can be divided into multiple independent channels for flue gas discharge. When recycling, the drive motor is started and controlled to rotate in reverse.

[0011] Optionally, the reversing component includes a meshing driving gear and a driven gear. A receiving groove is provided on the connecting rod near the base. The lead screw on the connecting rod near the base extends into the receiving groove. The driving gear is coaxially fixed to the output end of the drive motor, and the driven gear is coaxially fixed to one end of the lead screw located in the receiving groove.

[0012] By adopting the above technical solution, the commutator can be set vertically instead of horizontally, so that the drive motor can be placed in the cavity, thereby protecting the drive motor.

[0013] Optionally, the partition includes a partition cloth, a rotating rod, and a coil spring. The side wall of the central rod has a partition groove, and the inner wall of the partition groove has a rotating hole. The end of the rotating rod is inserted into the rotating hole and rotatably connected to the bottom of the rotating hole. The coil spring is sleeved on the end of the rotating rod, with one end fixed to the rotating rod and the other end fixed to the inner wall of the rotating hole. One end of the partition cloth is wrapped around the rotating rod, and the other end is fixed to the sliding rod.

[0014] By adopting the above technical solution, when in use, the drive motor is started and controlled to rotate forward, so as to drive the drive gear, driven gear and lead screw to rotate in sequence. The rotation of the lead screw will drive the sliding rod to move the partition cloth to the side away from the central rod and unfold it. After it is fully unfolded, the flue can be divided into multiple independent channels for flue gas discharge.

[0015] Optionally, the side of the sliding rod opposite to the central rod is configured as an arc-shaped protrusion.

[0016] By adopting the above technical solution, the arc-shaped protrusion facilitates the complete unfolding of the partition, allowing the side of the sliding rod closest to the inner wall of the flue to fit completely against the inner wall of the flue without leaving a large gap.

[0017] Optionally, a covering assembly is provided between adjacent connecting rods away from the base. The covering assembly includes a covering part, a suction part, a closing part, and a collecting part. The covering part is connected between adjacent connecting rods away from the base. The suction part is located between the covering part and the sliding rod. The closing part is located between the connecting rod and the covering part. The collecting part is located between the center rod and the base.

[0018] By adopting the above technical solution, when in use, the suction unit is activated to suction the sliding rod and the covering part together, and then the sliding rod is driven to retract the separating cloth; during the retraction process, the sliding rod simultaneously drives the covering part to unfold to cover the flue; and the rainwater dripping onto the covering part will flow to the collection part for collection.

[0019] Optionally, the covering part includes a covering cloth and a sliding block. A sliding groove is provided on the connecting rod away from the base. The sliding block is slidably connected in the sliding groove. One end of the covering cloth is fixed to the inner wall of the flue and the other end is fixed to the sliding block. The end of the covering cloth near the connecting rod extends into the sliding groove. The suction part is provided between the sliding block and the sliding rod. The sealing part is provided between the connecting rod and the covering cloth.

[0020] By adopting the above technical solution, during the recycling process, the sliding rod will drive the sliding block to slide, so as to unfold the covering cloth and cover the flue.

[0021] Optionally, the suction part includes an iron block, a pad, and an electromagnet. The bottom wall of the sliding groove is provided with a connecting groove, and the connecting groove communicates with the sliding groove. The iron block is fixed to the sliding block and inserted into the connecting groove. The pad is fixed to the sliding rod and inserted into the connecting groove. The pad is provided with a placement hole. The electromagnet is installed in the placement hole and contacts the iron block.

[0022] By adopting the above technical solution, before the separator cloth is recycled, the electromagnet is energized so that the electromagnet can firmly attract the iron block, that is, the sliding block and the sliding rod are fixedly connected; then during the recycling process of the separator cloth, the sliding rod will drive the sliding block to slide, so as to unfold the covering cloth and cover the flue.

[0023] Optionally, the sealing part includes a sealing plate and a compression spring. The inner wall of the sliding groove is provided with a strip groove. One end of the sealing plate is inserted into the strip groove and the other end is pressed against the covering cloth. The compression spring is connected between the bottom of the strip groove and the sealing plate.

[0024] By adopting the above technical solution, the compression spring can increase the thrust that pushes the sealing plate outward from the strip groove, so that the sealing plate has a better pressing effect on the separator cloth; the sealing plate can prevent external rainwater from easily entering the sliding groove.

[0025] Optionally, the collection part includes a receiving trough, a connecting pipe, and a collection box. The receiving trough is fixed to the central rod, the collection box is fixed to the base, and the connecting pipe connects the receiving trough and the collection box.

[0026] By adopting the above technical solution, after rainwater drips onto the cover cloth, the rainwater will flow down the cover cloth into the receiving trough, and then flow through the connecting pipe into the collection box for collection.

[0027] In summary, this application includes at least one of the following beneficial effects:

[0028] 1. When in use, start the drive unit to move the partition part away from the center rod to unfold it; after it is fully unfolded, the flue can be divided into multiple independent channels for flue gas discharge, so that there is no need to design multiple flues to meet the needs of multiple flue gas discharges, which not only improves the applicability of the flue, but also reduces the floor space.

[0029] 2. During the recycling process, the sliding rod will drive the sliding block to slide, so as to unfold the covering cloth and cover the flue.

[0030] 3. The compression spring can increase the thrust that pushes the sealing plate out of the groove, so that the sealing plate can better compress the separator cloth; the sealing plate can prevent external rainwater from entering the sliding groove. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the structure of an embodiment of this application;

[0032] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0033] Figure 3 This is a schematic diagram illustrating the structure of the covering component in the embodiments of this application;

[0034] Figure 4 for Figure 3 Enlarged view of point B in the middle.

[0035] In the diagram: 1. Flue; 11. Base; 111. Cavity; 12. Center rod; 121. Dividing groove; 1211. Rotating hole; 2. Connecting rod; 21. Sliding groove; 22. Sliding groove; 23. Connecting groove; 24. Strip groove; 25. Receiving groove; 3. Drive unit; 31. Lead screw; 32. Sliding rod; 321. Arc-shaped protrusion; 33. Drive motor; 4. Reversing component; 41. Driving gear; 42. Driven gear; 5. Dividing part; 51. Dividing cloth; 52. Rotating rod; 53. Coil spring; 6. Covering part; 61. Covering cloth; 62. Sliding block; 7. Suction part; 71. Iron block; 72. Pad; 721. Placement hole; 73. Electromagnet; 8. Sealing part; 81. Sealing plate; 82. Compression spring; 9. Collection part; 91. Receiving groove; 92. Connecting pipe; 93. Collection box. Detailed Implementation

[0036] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0037] This application discloses a multi-pipe chimney. (Refer to...) Figure 1 A multi-pipe chimney includes a flue 1, the inner diameter of which decreases from bottom to top. In this embodiment, an inlet or external pipe can be opened through the side wall near the bottom of the flue 1 to allow flue gas to be introduced into the flue 1 for discharge. A base 11 is fixedly installed at the bottom of the flue 1, and a central rod 12 is fixedly installed at the center of the top wall of the base 11. Several pairs of connecting rods 2 are fixedly installed on the inner wall of the flue 1. At least two pairs of connecting rods 2 are provided, and the end of the connecting rod 2 away from the inner wall of the flue 1 is fixed to the central rod 12. In this embodiment, three pairs of connecting rods 2 are provided, and this is optimal. The three pairs of connecting rods 2 are evenly arranged around the circumference of the central rod 12, and in each pair, one connecting rod 2 is located at the top end of the central rod 12, and the other connecting rod 2 is located at the bottom end of the central rod 12 and is in contact with the top wall of the base 11.

[0038] Reference Figure 2A partition assembly is provided between the central rod 12 and each pair of connecting rods 2. The partition assembly includes a drive unit 3 and a partition unit 5. The drive unit 3 is located on the connecting rod 2, and the partition unit 5 is located between the central rod 12 and the drive unit 3. In use, the drive unit 3 is activated to move the partition unit 5 away from the central rod 12 to unfold it. After it is fully unfolded, the flue 1 can be divided into three independent channels for flue gas discharge, thus eliminating the need to design multiple flues 1 to meet the needs of multiple flue gas discharges. This not only improves the applicability of the flue 1 but also reduces the floor space. If the three independent channels do not need to discharge flue gas at the same time, the drive unit 3 can be activated as needed to move the partition unit 5 closer to the central rod 12 for retraction. After it is fully retracted, the channel that does not discharge flue gas can be merged with the channel that discharges flue gas to increase the discharge space and thus accelerate the discharge speed.

[0039] Reference Figure 2 The drive unit 3 includes a lead screw 31, a sliding rod 32, and a drive motor 33. In this embodiment, the drive motor 33 has a self-locking function. Each pair of connecting rods 2 has a sliding groove 21 on one side opposite to each other along the length direction. The lead screw 31 is rotatably mounted in the sliding groove 21 on the connecting rod 2 near the base 11, and the lead screw 31 is horizontally arranged. The base 11 has a cavity 111 inside, and the drive motor 33 is installed in the cavity 111, and its output end drives the lead screw 31 to rotate through the commutator 4.

[0040] Reference Figure 2 One end of the sliding rod 32 is slidably connected to the sliding groove 21 on the connecting rod 2 near the base 11, and the other end is slidably connected to the sliding groove 21 on the connecting rod 2 away from the base 11. The lead screw 31 passes through the sliding rod 32 and is threadedly connected to the sliding rod 32. In use, the drive motor 33 is started and controlled to rotate forward to drive the lead screw 31 to rotate. The rotation of the lead screw 31 will drive the sliding rod 32 to move the partition 5 to the side away from the central rod 12 and unfold it. After it is fully unfolded, the flue 1 can be divided into three independent channels for flue gas discharge. When recycling, the drive motor 33 is started and controlled to rotate in reverse.

[0041] Reference Figure 1 Specifically, the side of the sliding rod 32 away from the center rod 12 is provided with an arc-shaped protrusion 321. The arc-shaped protrusion 321 makes it easy for the side of the sliding rod 32 near the inner wall of the flue 1 to fit completely with the inner wall of the flue 1 after the partition 5 is fully unfolded, without leaving a large gap.

[0042] Reference Figure 2The reversing component 4 includes a driving gear 41 and a driven gear 42. In this embodiment, both the driving gear 41 and the driven gear 42 are bevel gears. A receiving groove 25 is provided at the bottom wall of the connecting rod 2 near the base 11 and at the end away from the central rod 12. The output end of the drive motor 33 extends into the receiving groove 25 and is coaxially fixed with the driving gear 41. The end of the lead screw 31 away from the central rod 12 extends into the receiving groove 25 and is coaxially fixed with the driven gear 42. The driving gear 41 and the driven gear 42 mesh with each other. In use, the drive motor 33 is started and controlled to rotate forward, thereby driving the drive gear 41, driven gear 42 and lead screw 31 to rotate in sequence. The rotation of the lead screw 31 will drive the sliding rod 32 to move the partition 5 away from the center rod 12 and unfold it. After it is fully unfolded, the flue 1 can be divided into three independent channels for flue gas discharge. By setting the reversing member 4, the drive motor 33 can be set vertically instead of horizontally, so that the drive motor 33 can be placed in the cavity 111, thereby protecting the drive motor 33.

[0043] Reference Figure 2 The partition 5 includes a partition cloth 51, a rotating rod 52, and a coil spring 53. A partition groove 121 is formed on the side wall of the central rod 12 along its length, and the partition groove 121 corresponds one-to-one with each pair of connecting rods 2. A rotating hole 1211 is formed on the inner wall of the partition groove 121. The end of the rotating rod 52 is inserted into the corresponding rotating hole 1211 and rotatably connected to the bottom of the hole 1211. One end of the partition cloth 51 is wrapped around the rotating rod 52, and the other end is fixed to the side of the sliding rod 32 near the central rod 12. The distance from top to bottom of the partition cloth 51 is equal to the distance between each pair of connecting rods 2. The partition cloth 51 can divide the flue 1 into three independent channels for flue gas emission.

[0044] Reference Figure 2 The coil spring 53 is sleeved on one end of the rotating rod 52 located in the rotating hole 1211, with one end fixed to the rotating rod 52 and the other end fixed to the inner wall of the rotating hole 1211. When the separating cloth 51 is retracted, the spring spring 53 releases its elastic force to drive the rotating rod 52 to rotate, thereby enabling the separating cloth 51 to be rolled up on the rotating rod 52.

[0045] In use, start the drive motor 33 and control it to rotate forward, so as to drive the drive gear 41, driven gear 42 and lead screw 31 to rotate in sequence. The rotation of lead screw 31 will drive the sliding rod 32 to move the partition cloth 51 to the side away from the center rod 12 and unfold it. After it is fully unfolded, the flue 1 can be divided into three independent channels for flue gas discharge.

[0046] Reference Figure 3 and Figure 4Each adjacent connecting rod 2 away from the base 11 is provided with a covering assembly. The covering assembly includes a covering part 6, a suction part 7, a sealing part 8, and a collecting part 9. The covering part 6 is connected between the adjacent connecting rods 2 away from the base 11. The covering part 6 can cover the flue 1. On the one hand, it can prevent rainwater from accumulating in the flue 1 and from washing away the inner wall of the flue 1 during rainy days. On the other hand, it can cover the flue 1 when backflow of flue gas occurs.

[0047] Reference Figure 4 The suction part 7 is located between the covering part 6 and the sliding rod 32, the sealing part 8 is located between the connecting rod 2 and the covering part 6, and the collection part 9 is located between the central rod 12 and the base 11. The collection part 9 can collect rainwater dripping onto the covering part 6 during rainy weather for reuse, thereby saving water resources. In use, the suction part 7 is activated to clamp the sliding rod 32 and the covering part 6 together, and then the sliding rod 32 is driven to retract the separating cloth 51. During the retraction process, the sliding rod 32 simultaneously causes the covering part 6 to unfold, covering the flue 1; and the rainwater dripping onto the covering part 6 will flow to the collection part 9 for collection.

[0048] Reference Figure 4 The covering part 6 includes a covering cloth 61 and a sliding block 62. A sliding groove 22 is formed on the side wall of the connecting rod 2 away from the base 11 along its length, and both ends of the sliding groove 22 pass through the connecting rod 2 along its length. The sliding block 62 is slidably connected in the sliding groove 22. One end of the covering cloth 61 is fixed to the inner wall of the flue 1, and the other end is fixed to the sliding block 62. The side of the covering cloth 61 near the connecting rod 2 extends into the sliding groove 22. A suction part 7 is provided between the sliding block 62 and the sliding rod 32, and a sealing part 8 is provided between the connecting rod 2 and the covering cloth 61. During the recycling process of the separating cloth 51, the sliding rod 32 will drive the sliding block 62 to slide, so as to unfold the covering cloth 61 and cover the flue 1.

[0049] Reference Figure 4 The suction part 7 includes an iron block 71, a pad 72, and an electromagnet 73. The bottom wall of the sliding groove 22 has a connecting groove 23 along its length, which is connected to the sliding groove 21. One end of the iron block 71 is fixed to the bottom wall of the sliding block 62, and the other end is inserted into the connecting groove 23. One end of the pad 72 is fixed to the top wall of the sliding rod 32, and the other end is inserted into the connecting groove 23.

[0050] Reference Figure 4The top wall of the pad 72 has a placement hole 721, and the electromagnet 73 is installed in the placement hole 721 and is in contact with the iron block 71. Before the separator cloth 51 is recycled, the electromagnet 73 is energized so that the electromagnet 73 can firmly attract the iron block 71, that is, the sliding block 62 and the sliding rod 32 are fixedly connected; then during the recycling of the separator cloth 51, the sliding rod 32 will drive the sliding block 62 to slide, so as to unfold the covering cloth 61 and cover the flue 1.

[0051] Reference Figure 2 and Figure 4 The collection unit 9 includes a receiving trough 91, a connecting pipe 92, and a collection box 93. The receiving trough 91 is fixed to the side wall of the central rod 12, and the receiving trough 91 corresponds one-to-one with the partition cloth 51. The collection box 93 is fixed to the top wall of the base 11, and the collection box 93 is connected to the receiving trough 91 through the connecting pipe 92. After rainwater drips onto the covering cloth 61, the rainwater will flow down the covering cloth 61 into the receiving trough 91, and then flow through the connecting pipe 92 into the collection box 93 for collection.

[0052] Reference Figure 4 Specifically, the sealing part 8 includes a sealing plate 81 and a compression spring 82. The sealing plate 81 may be made of rubber. The inner top and bottom walls of the sliding groove 22 near the opening are both provided with strip-shaped grooves 24. One end of the sealing plate 81 is inserted into the strip-shaped groove 24, and the other end is pressed against the end of the separator cloth 51 located within the sliding groove 22. One end of the compression spring 82 is fixed to the sealing plate 81, and the other end is fixed to the bottom of the strip-shaped groove 24. The compression spring 82 can increase the thrust that pushes the sealing plate 81 outwards from the strip-shaped groove 24, so that the sealing plate 81 has a better pressing effect on the separator cloth 51; the sealing plate 81 can prevent external rainwater from easily entering the sliding groove 22.

[0053] The implementation principle of a multi-pipe chimney according to an embodiment of this application is as follows: When in use, the drive motor 33 is started and controlled to rotate forward, so as to drive the drive gear 41, the driven gear 42 and the lead screw 31 to rotate in sequence. The rotation of the lead screw 31 will drive the sliding rod 32 to move the partition cloth 51 to the side away from the central rod 12 and unfold it. After it is fully unfolded, the flue 1 can be divided into three independent channels for flue gas discharge.

[0054] 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 multi-pipe chimney, comprising a flue (1), characterized in that: At least two pairs of connecting rods (2) are fixedly provided on the inner wall of the flue (1). A base (11) is fixedly provided inside the flue (1). A central rod (12) is provided on the top wall of the base (11) and the central rod (12) is fixed to the connecting rod (2). A partition component is provided between the central rod (12) and each pair of connecting rods (2). The partition component includes a driving part (3) and a partition part (5). The partition part (5) is located between the central rod (12) and the driving part (3). The driving part (3) drives the partition part (5) to unfold so as to divide the flue (1) into at least two independent channels. The drive unit (3) includes a lead screw (31), a sliding rod (32), and a drive motor (33). Each pair of connecting rods (2) has a sliding groove (21) on one side opposite to the other. The lead screw (31) is rotatably installed in the sliding groove (21) on the connecting rod (2) near the base (11). The base (11) has a cavity (111) inside. The drive motor (33) is installed in the cavity (111) and its output end is connected to the lead screw (31) on the connecting rod (2) near the base (11) through a reversing member (4). The end of the sliding rod (32) is slidably connected in the sliding groove (21), and the lead screw (31) passes through the sliding rod (32) and is threadedly connected to the sliding rod (32). The reversing component (4) includes a meshing drive gear (41) and a driven gear (42). A receiving groove (25) is provided on the connecting rod (2) near the base (11). The lead screw (31) on the connecting rod (2) near the base (11) extends into the receiving groove (25). The drive gear (41) is coaxially fixed with the output end of the drive motor (33). The driven gear (42) is coaxially fixed with one end of the lead screw (31) located in the receiving groove (25). The partition (5) includes a partition cloth (51), a rotating rod (52) and a coil spring (53). The side wall of the central rod (12) is provided with a partition groove (121) and the inner wall of the partition groove (121) is provided with a rotating hole (1211). The end of the rotating rod (52) is inserted into the rotating hole (1211) and is rotatably connected to the bottom of the rotating hole (1211). The coil spring (53) is sleeved on the end of the rotating rod (52) and one end is fixed to the rotating rod (52) and the other end is fixed to the inner wall of the rotating hole (1211). One end of the partition cloth (51) is wrapped around the rotating rod (52) and the other end is fixed to the sliding rod (32). A cover assembly is provided between each of the adjacent connecting rods (2) away from the base (11). The cover assembly includes a cover part (6), a suction part (7), a closing part (8), and a collecting part (9). The cover part (6) is connected between the adjacent connecting rods (2) away from the base (11). The suction part (7) is located between the cover part (6) and the sliding rod (32). The closing part (8) is located between the connecting rod (2) and the cover part (6). The collecting part (9) is located between the center rod (12) and the base (11). The covering part (6) includes a covering cloth (61) and a sliding block (62). A sliding groove (22) is provided on the connecting rod (2) away from the base (11). The sliding block (62) is slidably connected in the sliding groove (22). One end of the covering cloth (61) is fixed to the inner wall of the flue (1) and the other end is fixed to the sliding block (62). The end of the covering cloth (61) near the connecting rod (2) extends into the sliding groove (22). The suction part (7) is provided between the sliding block (62) and the sliding rod (32). The sealing part (8) is provided between the connecting rod (2) and the covering cloth (61).

2. A multi-pipe chimney according to claim 1, characterized in that: The sliding rod (32) is provided with an arc-shaped protrusion (321) on the side opposite to the central rod (12).

3. A multi-pipe chimney according to claim 2, characterized in that: The suction part (7) includes an iron block (71), a pad (72) and an electromagnet (73). The bottom wall of the sliding groove (22) is provided with a connecting groove (23) and the connecting groove (23) is connected to the sliding groove (21). The iron block (71) is fixed to the sliding block (62) and inserted into the connecting groove (23). The pad (72) is fixed to the sliding rod (32) and inserted into the connecting groove (23). The pad (72) is provided with a placement hole (721). The electromagnet (73) is installed in the placement hole (721) and is in contact with the iron block (71).

4. A multi-pipe chimney according to claim 2, characterized in that: The sealing part (8) includes a sealing plate (81) and a compression spring (82). The inner wall of the sliding groove (22) is provided with a strip groove (24). One end of the sealing plate (81) is inserted into the strip groove (24) and the other end is pressed onto the covering cloth (61). The compression spring (82) is connected between the bottom of the strip groove (24) and the sealing plate (81).

5. A multi-pipe chimney according to claim 1, characterized in that: The collection part (9) includes a receiving trough (91), a connecting pipe (92) and a collection box (93). The receiving trough (91) is fixed on the central rod (12), the collection box (93) is fixed on the base (11), and the connecting pipe (92) connects the receiving trough (91) and the collection box (93).

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