Temperature controller processing laser engraving smoking machine

Abstract

This invention discloses a laser engraving smoke extraction machine for temperature controller processing, relating to the field of laser engraving technology for temperature controllers. It includes an engraving machine frame and a laser engraver slidably mounted on top of the frame, which performs engraving operations on the controller components inside the frame. The frame has an anti-diffusion mechanism with a bearing hole. A suction cone is slidably mounted inside the suction slot. The bottom of the laser engraver has a smoke extraction mechanism with a smoke extraction slide. This laser engraving smoke extraction machine for temperature controller processing, through the alignment of the laser engraver's positioning slide and the smoke extraction slide with the temperature controller, creates close-range suction from the inclined smoke extraction tube at the engraving point, opening the suction slots around the temperature controller and effectively preventing fine particles from rising or dispersing outwards, thus improving air cleanliness and visual transparency.

Description

Technical Field

[0001] This invention relates to the field of laser engraving technology for temperature controllers, specifically to a laser engraving smoking machine for processing temperature controllers. Background Technology

[0002] Laser engraving of thermostats refers to the processing technology of etching desired markings, patterns, or textures onto the surface of thermostat parts using laser engraving. The energy of the laser beam causes a chemical change or evaporation of the surface material of the thermostat, exposing deeper layers and thus creating permanent and clear marks. It is commonly used to engrave brand logos, model parameters, scale lines, wiring markings, and other information on the thermostat's housing, terminals, and adjustment knobs. Compared to traditional printing and etching processes, laser engraving machines offer high processing precision and, being non-contact, do not damage the internal components or surface precision of the thermostat. However, laser engraving operations generate smoke and dust, which can obscure the engraving and affect its accuracy.

[0003] Application CN209598438U discloses a smoke extraction device for a laser engraving machine. The smoke extraction device includes a dust collection box connected to an exhaust fan. Inside the dust collection box are three filters with progressively smaller pore sizes and an activated carbon adsorption screen. A blower is installed below the laser engraving machine's worktable to blow the smoke upwards, and the smoke is promptly removed by a fume hood, resulting in better smoke extraction. In addition, the activated carbon adsorption screen inside the dust collection box adsorbs harmful gases, reducing air pollution and ensuring the health of the workers.

[0004] Application CN220838416U discloses a laser engraving smoking device for wooden handicrafts, including: an engraving table and a fixing device. The engraving table defines an upward-opening processing space, and a mounting beam is provided at the opening of the processing space. The mounting beam is provided with a processing device and a smoking component for absorbing smoke. The processing device is connected to the smoking component, and both are movably connected to the mounting beam. The fixing device is connected between the smoking component and the processing device.

[0005] However, the aforementioned fumigation device for laser engraving machines still has the following problems in actual use: the fumigation device is fixedly connected to one end of the laser emitting component to extract smoke and dust. However, this type of laser engraving machine performs engraving operations in a non-contact manner. There is a certain height distance between the engraving component and the fumigation device relative to the workpiece to be engraved. If the negative pressure of the fumigation device is small, it is easy to cause smoke and dust to scatter. If the negative pressure of the fumigation device is large, it will affect the laser emission and result in insufficient temperature, which will affect the engraving operation.

[0006] Therefore, we propose a laser engraving smoking machine for temperature controller processing to solve the problems mentioned above. Summary of the Invention

[0007] The purpose of this invention is to provide a laser engraving fumigation machine for temperature controller processing. This addresses the problem that existing laser engraving machines use a fumigation device fixedly connected to one end of the laser emitting component to extract smoke and dust. However, these machines perform engraving operations in a non-contact manner, and there is a certain height distance between the engraving component and the fumigation device relative to the workpiece. If the negative pressure of the fumigation device is too low, smoke and dust can easily scatter; if the negative pressure of the fumigation device is too high, it can affect laser emission, resulting in insufficient temperature and affecting the engraving operation.

[0008] To achieve the above objectives, the present invention provides the following technical solution: a laser engraving smoking machine for processing temperature controllers, comprising an engraving machine frame and a laser engraver slidably mounted on the upper part of the engraving machine frame, wherein the laser engraver performs engraving operations on the controller components inside the engraving machine frame; The engraving machine frame is equipped with an anti-diffusion mechanism, which includes a bearing plate, and the bearing plate has suction slots evenly spaced inside. The suction groove is slidably installed with a suction cone tube inside, and a synchronous carrier plate is fixedly installed below the adjacent suction cone tube. The bottom of the laser engraver is equipped with a fumigation mechanism, which includes a fumigation slide and a fumigation inclined tube installed on the lower inner wall of the fumigation slide. The fumigation inclined tube is used to extract smoke and dust from the laser engraving area.

[0009] Preferably, the anti-diffusion mechanism includes a bearing plate fixedly installed inside the lower part of the engraving machine frame, and an anti-detachment liner is fixedly installed at equal intervals from front to back on the bottom surface of the bearing plate, and an isolation valve pipe is fixedly installed at equal intervals inside the anti-detachment liner, and an isolation valve plate is installed on the upper left and right sides inside the isolation valve pipe by means of a torsion spring for unidirectional rotation.

[0010] Preferably, the anti-diffusion mechanism includes an on / off valve tube, the upper end of which is connected to the bottom end of the synchronization carrier plate, and the lower end of which is slidably installed above the inside of the isolation valve tube. The synchronization carrier plate and the bearing orifice plate are connected to each other by a return spring.

[0011] Preferably, the anti-diffusion mechanism includes a synchronous carrier plate that is slidably installed below the bottom surface of the bearing orifice plate, and each synchronous carrier plate is connected to four suction cones. The temperature controller assembly abuts against the corresponding suction cone and synchronous carrier plate, causing the on / off valve pipe to slide downward, so that the on / off valve pipe abuts against the isolation valve plate inside the isolation valve pipe and flips downward to open and connect.

[0012] Preferably, the anti-diffusion mechanism includes a first suction filter, which is fixedly installed at the rear center of the engraving machine frame. A first suction pipe is connected through the interior of the first suction filter, and the front end of the first suction pipe is connected through the isolation valve pipe inside the anti-detachment liner, which is set at equal intervals.

[0013] Preferably, the smoking mechanism includes a positioning slide, the upper end of which is fixedly connected to the bottom end of the laser engraver, and the lower end of which is slidably connected to the upper inner end of the smoking slide. The positioning slide and the smoking slide are connected to each other by a contact spring, and the sum of the lengths of the positioning slide and the smoking slide is greater than the length between the lower end of the laser engraver and the bearing plate.

[0014] Preferably, the smoking mechanism includes a sliding roller, which is rotatably mounted on the lower exterior of the smoking carriage via a bearing, and a second suction tube is fixedly installed on the lower exterior of the smoking carriage, and the second suction tube is connected in a through connection with the smoking inclined tube below the inner wall of the smoking carriage.

[0015] Preferably, the smoking mechanism includes a smoking inclined tube that is inclined with the inner end pointing downward and the outer end pointing upward, and the smoking carriage outside the smoking inclined tube slides against the upper surface of the controller assembly via sliding rollers. The smoking carriage and the positioning carriage move synchronously with the laser engraver and are used to draw in smoke generated by the laser engraving through the smoking inclined tube.

[0016] Preferably, the smoking mechanism includes a second suction filter, which is fixedly installed behind the bottom surface of the laser engraver. The laser engraver is connected to the rear end of the second suction tube. The second suction filter achieves the suction of smoke and dust during laser engraving through the second suction tube and the through-connected smoking inclined tube. Moreover, the bottom horizontal height of the smoking inclined tube is higher than the bottom horizontal height of the smoking carriage.

[0017] Compared with the prior art, the beneficial effects of this invention are as follows: This laser engraving smoke extraction machine for temperature controller processing, through the positioning slide at the bottom of the laser engraver and the smoke extraction slide adapted to the temperature controller, forms a close-range suction through the smoke extraction inclined tube at the engraving point, simultaneously driving the suction slots around the temperature controller to open, realizing the suction of diffused smoke and dust, effectively preventing fine particles from rising or dispersing outward, improving air cleanliness and visual transparency. The specific details are as follows: 1. The positioning carriage is fixedly connected to the bottom surface of the laser engraver. The smoking carriage slides against the working surface via sliding rollers, with a contact spring placed between them. During laser engraving, the smoking carriage is pressed against the working surface by the elastic force, causing its bottom rollers to roll on the surface of the controller assembly to reduce movement resistance and avoid interference. The smoking angle tube is inclined inside the smoking carriage, and its height maintains the optimal smoking distance from the engraving point.

[0018] Furthermore, the suction tube moves synchronously with the laser engraving point, ensuring that the smoke can be sucked in by negative pressure the moment it is generated. The second suction tube connects to the suction carriage and extends backward. The smoke is purified by the second suction filter and is always kept above the engraving point, achieving the effect of "laser arrives, suction follows" and preventing the smoke from spreading.

[0019] 2. After the temperature controller to be processed is placed on the bearing perforated plate, it will naturally compact the suction cone tubes in the coverage area, causing all suction cone tubes to sink synchronously under the pressure of the controller. The top of the suction cone tube sinks to be flush with the top surface of the bearing perforated plate, eliminating the risk of unevenness caused by the supporting force on the controller. The suction slots outside the controller coverage area are also opened together due to the linkage of the mechanism, becoming smoke inlets. While performing local suction, a negative pressure can still be formed around the area to control the spread of dust in all directions.

[0020] 3. The isolation valve tube is equipped with paired torsion spring valve plates, which are automatically closed under normal conditions. When the temperature controller presses down the suction cone tube to lower the synchronous carrier plate, the lower end of the on / off valve tube also enters the isolation valve tube, causing the valve plate to be flipped down under pressure and keeping the passage open, thus completing the connection from the suction port to the downstream pipeline. When there is no external pressure, the valve plate returns to the closed state due to the action of the torsion spring, preventing backflow of air.

[0021] 4. The inclined suction tube at the top of the laser captures the initial smoke generated at the engraving point at close range, while the suction cone tube below the support plate simultaneously sucks up heavily suspended particles settling downwards. The second suction tube and the first suction tube are connected to their respective independent filter units, forming two parallel suction paths that act on high-concentration and diffused smoke respectively. The two suction layers work together to cover the three-dimensional workspace, ensuring that smoke is adsorbed at different locations, especially during long-term engraving, effectively preventing fine particles from rising or diffusing outwards, and improving air cleanliness and visual transparency. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention; Figure 2 This is a schematic diagram of the three-dimensional structure of the laser engraver of the present invention; Figure 3 This is a schematic diagram of the installation structure of the smoking carriage and the positioning carriage of the present invention; Figure 4 This is a schematic diagram of the sliding roller mounting structure of the present invention; Figure 5 For the present invention Figure 4 Enlarged structural diagram at point A in the middle; Figure 6 This is a schematic diagram of the mounting structure of the bearing perforated plate of the present invention; Figure 7 This is a schematic diagram of the anti-detachment liner installation structure of the present invention; Figure 8 This is a three-dimensional structural diagram of the anti-detachment liner and isolation valve pipe of the present invention; Figure 9 For the present invention Figure 8 Enlarged structural diagram at point B; Figure 10 This is a schematic diagram of the structure of the suction cone tube after it descends according to the present invention; Figure 11 For the present invention Figure 10 Enlarged structural diagram at point C.

[0023] In the diagram: 1. Engraving machine frame; 2. Laser engraver; 3. Bearing plate; 4. Suction slot; 5. Suction cone tube; 6. Synchronous carrier plate; 7. Smoke carriage; 8. Smoke inclined tube; 9. Anti-detachment liner; 10. Isolation valve tube; 11. Isolation valve plate; 12. On / off valve tube; 13. Return spring; 14. First suction filter; 15. First suction tube; 16. Sliding roller; 17. Second suction tube; 18. Second suction filter; 19. Positioning carriage; 20. Contact spring. Detailed Implementation

[0024] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] Please see Figures 1-11 The present invention provides the following technical solution: Example 1: To solve the problems existing in the use of existing laser engraving, this example discloses the following technical solution: a laser engraving smoke extraction machine for temperature controller processing, including an engraving machine frame 1 and a laser engraver 2 slidably mounted on the upper part of the engraving machine frame 1, wherein the laser engraver 2 performs engraving operations on the controller assembly inside the engraving machine frame 1; the smoke extraction mechanism includes a positioning slide 19, the upper end of which is fixedly connected to the bottom end of the laser engraver 2, and the lower end of which is slidably connected to the upper end of the smoke extraction slide 7. The positioning slide 19 and the smoke extraction slide 7 are connected to each other by a contact spring 20, and the sum of the lengths of the positioning slide 19 and the smoke extraction slide 7 is greater than the length between the lower end of the laser engraver 2 and the bearing plate 3.

[0026] The bottom of the laser engraver 2 is equipped with a fumigation mechanism, which includes a fumigation slide 7 and a fumigation inclined tube 8 located on the lower inner wall of the fumigation slide 7. The fumigation inclined tube 8 is used to extract smoke and dust from the laser engraving area. The fumigation mechanism includes a sliding roller 16, which is rotatably mounted on the lower outer side of the fumigation slide 7 via a bearing. A second suction tube 17 is fixedly installed on the lower outer side of the fumigation slide 7, and the second suction tube 17 is connected to the fumigation inclined tube 8 located on the lower inner wall of the fumigation slide 7. The smoking mechanism includes a smoking inclined tube 8 that is inclined with the inner end downward and the outer end upward. The smoking carriage 7 outside the smoking inclined tube 8 slides against the upper surface of the controller assembly via sliding rollers 16. The smoking carriage 7 and the positioning carriage 19 move synchronously with the laser engraver 2 and are used to draw in the smoke generated by the laser engraving through the smoking inclined tube 8. The smoking mechanism includes a second suction filter 18, which is fixedly installed behind the bottom surface of the laser engraver 2. The laser engraver 2 is connected to the rear end of the second suction tube 17. The second suction filter 18 draws in the smoke during the laser engraving operation through the second suction tube 17 and the through-connected smoking inclined tube 8. The bottom horizontal height of the smoking inclined tube 8 is higher than the bottom horizontal height of the smoking carriage 7.

[0027] like Figures 1-3 As shown, when laser engraving is required on the temperature controller, the temperature controller is first placed in the middle of the bearing plate 3 inside the outer frame 1 of the engraving machine. Then, the smoke slide 7 below the laser engraver 2 is manually grasped and slid upward. The smoke slide 7 presses the upper abutment spring 20 and is fitted onto the outside of the positioning slide 19, thereby placing the temperature controller on the bottom surface of the laser engraver 2. Then, the extension of the abutment spring 20 drives the smoke slide 7 to slide downward. The smoke slide 7 drives the sliding roller 16 on the outer side of the bottom end to fit against the top surface of the temperature controller, thereby aligning the temperature controller with the laser engraver 2 for subsequent laser engraving operations.

[0028] like Figures 4-5 As shown, the laser engraver 2 moves horizontally and backwards above the outer frame 1 of the engraving machine, and emits a laser downwards to the temperature controller to perform the engraving operation. At the same time, the positioning slide 19 and the smoking slide 7 move synchronously with the laser engraver 2. The sliding rollers 16, which are evenly distributed on the bottom surface of the smoking slide 7, slide on the top surface of the temperature controller, thereby reducing the sliding resistance and preventing the temperature controller from being misaligned.

[0029] Furthermore, the second suction filter 18, installed behind the bottom surface of the laser engraver 2, performs its operation. It achieves negative pressure suction through the through-connected second suction pipe 17. At the same time, the second suction pipe 17 draws smoke through the through-connected front end of the smoke suction pipe 8. The inner ends of the equally angled smoke suction pipes 8 are distributed above the temperature controller engraving area. Thus, when engraving is performed by the laser beam, the smoke generated is drawn into the interior of the second suction filter 18 through the smoke suction pipes 8 and the second suction pipe 17 for filtration, so as to avoid affecting the engraving accuracy of the laser engraver 2.

[0030] Example 2: To solve the problems existing in the use of existing laser engraving, this example discloses the following technical solution: The engraving machine frame 1 is provided with an anti-diffusion mechanism, which includes a bearing plate 3, and the bearing plate 3 is provided with suction slots 4 at equal intervals; a suction cone tube 5 is slidably installed inside the suction slot 4, and a synchronous carrier plate 6 is fixedly installed below the adjacent suction cone tube 5; the bearing plate 3 included in the anti-diffusion mechanism is fixedly installed inside the lower part of the engraving machine frame 1, and an anti-detachment liner 9 is fixedly installed at equal intervals from front to back on the bottom surface of the bearing plate 3, and an isolation valve tube 10 is fixedly installed at equal intervals inside the anti-detachment liner 9, and an isolation valve plate 11 is installed on the upper left and right sides of the inside of the isolation valve tube 10 by unidirectional rotation via a torsion spring.

[0031] The anti-diffusion mechanism includes an on / off valve tube 12, the upper end of which is connected to the bottom end of the synchronous carrier plate 6, and the lower end of which is slidably installed above the interior of the isolation valve tube 10. The synchronous carrier plate 6 and the bearing orifice plate 3 are connected to each other by a return spring 13.

[0032] like Figures 8-11 As shown, the temperature controller is placed above the bearing plate 3 inside the outer frame 1 of the engraving machine. Then, the temperature controller touches the suction cone tube 5 that passes through the bearing plate 3, causing the suction cone tube 5 to slide down into the suction slot 4 inside the bearing plate 3. The top of the suction cone tube 5 is at the same horizontal height as the top surface of the bearing plate 3, thereby preventing the suction cone tube 5 from touching the temperature controller and tilting, which would affect the subsequent laser engraving.

[0033] Furthermore, after the suction cone 5, which is being resisted, slides downward, it causes the synchronous carrier plate 6 fixedly connected to the lower end and the other correspondingly distributed suction cones 5 to descend synchronously. This causes the suction cones 5, which are not being squeezed or resisted by the temperature controller, to descend synchronously, so that the suction slots 4 outside the coverage area of ​​the temperature controller are also opened. Then, through these uncovered suction slots 4, the diffused smoke is sucked up and cleaned during subsequent laser engraving operations.

[0034] Example 3: To solve the problems existing in the use of existing laser engraving, this example discloses the following technical solution: The anti-diffusion mechanism includes a synchronous carrier plate 6 that is slidably installed below the bottom surface of the bearing hole plate 3, and each synchronous carrier plate 6 is connected to four suction cone tubes 5. The temperature controller assembly abuts against the corresponding suction cone tube 5 and synchronous carrier plate 6, causing the on / off valve tube 12 to slide downward, so that the on / off valve tube 12 abuts against the isolation valve plate 11 inside the isolation valve tube 10 and flips downward to open and connect; The anti-diffusion mechanism includes a first suction filter 14, and the first suction filter 14 is fixedly installed in the rear middle of the engraving machine frame 1, and the first suction tube 15 is connected through the inside of the first suction filter 14, and the front end of the first suction tube 15 is connected through the isolation valve tube 10 inside the anti-detachment liner 9 which is set at equal distances.

[0035] like Figures 6-8 As shown, during the downward sliding of the suction cone tube 5 inside the bearing orifice plate 3, the suction cone tube 5 slides downward, and the on / off valve tube 12 connected to its lower end slides into the interior of the isolation valve tube 10, and abuts against the symmetrically distributed isolation valve plate 11 inside the isolation valve tube 10 and flips downward, thereby making the isolation valve tube 10, the on / off valve tube 12 and the first suction tube 15 interconnected. Then the first suction filter 14 performs the operation, thereby creating a negative pressure suction state between the first suction tube 15, the on / off valve tube 12 and the isolation valve tube 10, and the suction cone tube 5 with its upper end in the open state sucks in the smoke and dust generated during the laser engraving operation, thereby preventing the smoke and dust from spreading and affecting the working environment.

[0036] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A laser engraving smoking machine for processing temperature controllers, comprising an engraving machine frame (1) and a laser engraver (2) slidably mounted on the upper part of the engraving machine frame (1), wherein the laser engraver (2) performs engraving operations on the controller components inside the engraving machine frame (1); Its features are, Also includes: The engraving machine frame (1) is provided with an anti-diffusion mechanism, which includes a bearing hole plate (3) and suction slots (4) are provided at equal intervals inside the bearing hole plate (3). The suction tube (5) is slidably installed inside the suction slot (4), and a synchronous carrier plate (6) is fixedly installed below the adjacent suction tube (5). The bottom of the laser engraver (2) is provided with a smoking mechanism, which includes a smoking slide (7) and a smoking inclined tube (8) is provided below the inner wall of the smoking slide (7). The smoking inclined tube (8) sucks up the smoke and dust at the laser engraving area.

2. The laser engraving smoking machine for processing temperature controllers according to claim 1, characterized in that: The anti-diffusion mechanism includes a bearing plate (3) fixedly installed inside the lower part of the engraving machine frame (1), and the bottom surface of the bearing plate (3) is fixedly installed with anti-detachment liner (9) at equal intervals from front to back, and the interior of the anti-detachment liner (9) is fixedly installed with isolation valve pipe (10) at equal intervals, and the upper left and right sides of the interior of the isolation valve pipe (10) are all installed with isolation valve plate (11) by unidirectional rotation through torsion spring.

3. The laser engraving smoking machine for processing temperature controllers according to claim 2, characterized in that: The anti-diffusion mechanism includes a shut-off valve tube (12), the upper end of which is connected to the bottom end of the synchronous carrier plate (6), and the lower end of which is slidably installed above the inside of the isolation valve tube (10). The synchronous carrier plate (6) and the bearing hole plate (3) are connected to each other by a reset spring (13).

4. The laser engraving smoking machine for processing temperature controllers according to claim 1, characterized in that: The anti-diffusion mechanism includes a synchronous carrier plate (6) which is slidably installed below the bottom surface of the bearing orifice plate (3). Each synchronous carrier plate (6) is connected to four suction cones (5). The temperature controller assembly abuts against the corresponding suction cone (5) and synchronous carrier plate (6), causing the on / off valve pipe (12) to slide downward, so that the on / off valve pipe (12) abuts against the isolation valve plate (11) inside the isolation valve pipe (10) and flips downward to achieve opening and connection.

5. A laser engraving smoking machine for processing temperature controllers according to claim 4, characterized in that: The anti-diffusion mechanism includes a first suction filter (14), which is fixedly installed in the middle rear of the outer frame (1) of the engraving machine. The first suction filter (14) is internally connected to a first suction pipe (15), and the front end of the first suction pipe (15) is internally connected to the isolation valve pipe (10) inside the anti-detachment liner (9) which is set at equal intervals.

6. A laser engraving smoking machine for processing temperature controllers according to claim 1, characterized in that: The smoking mechanism includes a positioning slide (19), the upper end of which is fixedly connected to the bottom end of the laser engraver (2), and the lower end of which is slidably connected to the upper end of the smoking slide (7). The positioning slide (19) and the smoking slide (7) are connected to each other by a contact spring (20). The sum of the lengths of the positioning slide (19) and the smoking slide (7) is greater than the length between the lower end of the laser engraver (2) and the bearing hole plate (3).

7. A laser engraving smoking machine for processing temperature controllers according to claim 6, characterized in that: The smoking mechanism includes a sliding roller (16), which is rotatably mounted on the lower exterior of the smoking carriage (7) via a bearing. A second suction tube (17) is fixedly installed on the lower exterior of the smoking carriage (7), and the second suction tube (17) is connected to the smoking inclined tube (8) below the inner wall of the smoking carriage (7).

8. A laser engraving smoking machine for processing temperature controllers according to claim 1, characterized in that: The smoking mechanism includes a smoking incline tube (8) that is inclined with the inner end downward and the outer end upward. The smoking carriage (7) outside the smoking incline tube (8) slides against the upper surface of the controller assembly via a sliding roller (16). The smoking carriage (7) and the positioning carriage (19) move synchronously with the laser engraver (2) to be sucked up by the smoking incline tube (8) when the laser engraving generates smoke.

9. A laser engraving smoking machine for processing temperature controllers according to claim 8, characterized in that: The smoking mechanism includes a second suction filter (18), which is fixedly installed behind the bottom surface of the laser engraver (2). The laser engraver (2) is connected to the rear end of the second suction tube (17). The second suction filter (18) achieves the suction of smoke during laser engraving through the second suction tube (17) and the through-connected smoking inclined tube (8). The bottom horizontal height of the smoking inclined tube (8) is higher than the bottom horizontal height of the smoking carriage (7).

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