Environmentally friendly dust collecting and guiding device

Abstract

The present invention relates to the technical field of guide and guard devices, and in particular to an environmentally friendly dust-collecting guide and guard device. It comprises: a guide and guard body; the ventilation pipe, which is arranged above the guide and guard body, the ventilation pipe flange is connected with the connecting pipe, the connecting pipe is connected with a trumpet pipe, and the trumpet pipe is located above the outlet of the guide and guard body; a quick interface, which is installed on one side of the connecting pipe, the quick interface is connected with the connecting pipe, the inner wall of the trumpet pipe is fixedly connected with an inner sleeve shell, and a gap is left between the upper end of the inner sleeve shell and the inner wall of the connecting pipe. According to the Bernoulli principle, the present invention forms a low-pressure zone in the middle of the inner sleeve shell, cleans the flying dust generated at the outlet of the guide and guard body, and the flying dust flows into the ventilation pipe with the high-pressure air through the connecting pipe, and completes the subsequent collection, so as to avoid a large amount of flying dust generated by the friction between the guide and guard body and the oxide layer on the steel, thereby causing the flying dust to pollute the workshop environment.

Description

Technical Field

[0001] The invention relates to the technical field of guide devices, and in particular to an environmentally friendly dust collection guide device. Background Art

[0002] Guides are an indispensable part of the steel production process. They are mainly used to ensure the precise guidance and stable support of steel during the rolling process. They not only ensure the quality of steel processing but also improve efficiency, providing strong support for the sustainable development of the steel industry.

[0003] When the existing guide is in use, as the high-temperature steel passes through the guide and is discharged from the outlet, the oxide layer on the steel will rub against the guide and generate a large amount of dust at the outlet of the guide. Since the steel rolling production line is continuously in a high-temperature state, the temperature of the nearby air remains high. Under the action of the hot air, the suspension time of dust in the air increases, causing dust to fill the entire production workshop, thereby polluting the workshop environment. In addition, when the guide is used for a long time in a high-temperature environment, it is easy to have bearing damage. After the bearing is damaged, the roller of the guide will not rotate smoothly or even get stuck, seriously affecting the normal transportation of the steel, and scratches will appear on the outer side of the guide. After the roller of the guide stops rotating, it is necessary to stop the machine for inspection in time, resulting in frequent shutdowns of the production line and reduced production efficiency. Summary of the invention

[0004] In order to overcome the shortcoming that the existing guides and guards cannot handle dust, the present invention provides an environmentally friendly dust collecting guide and guard device.

[0005] The technical solution of the present invention is: an environmentally friendly dust collection and guiding device, comprising:

[0006] Guide body;

[0007] The ventilation pipe is arranged above the guide body, the ventilation pipe flange is connected to the connecting pipe, the connecting pipe is connected to a trumpet pipe, and the trumpet pipe is located above the outlet of the guide body and is used to clean the oxide dust;

[0008] A quick interface is installed on one side of the connecting pipe, the quick interface is communicated with the connecting pipe, an inner sleeve is fixedly connected to the inner wall of the horn pipe, and a gap is left between the upper end of the inner sleeve and the inner wall of the connecting pipe;

[0009] There are two guide assemblies in total. The two guide assemblies are symmetrically fixed to the outlet of the guide body and are used to guide the steel.

[0010] Furthermore, the guide assembly includes:

[0011] A support plate body, a slide groove is arranged on the outer side of the guide body, the support plate body is slidably connected in the slide groove of the guide body, and a tension spring 1 is fixedly connected between the support plate body and the guide body;

[0012] A support shaft is installed through the support plate body, and a roller is sleeved on the outer side of the support shaft;

[0013] There are two bearings in total, and both bearings are installed between the support shaft and the roller to reduce the friction between the two.

[0014] Furthermore, the support plate body is provided with a slide groove, a guide plate is installed in the slide groove of the guide body, and the guide plate on the guide body is located in the slide groove of the support plate body and slides, so as to limit the support plate body.

[0015] Furthermore, it also includes:

[0016] Auxiliary fixing mechanism, there are two auxiliary fixing mechanisms, the two auxiliary fixing mechanisms are respectively arranged on adjacent support plates, the auxiliary fixing mechanism is used to fix the support shaft, and the auxiliary fixing mechanism includes:

[0017] There are two fixed seats in total, which are symmetrically fixed to the two sides of the support plate body, and a second bearing is installed in the fixed seat. The fixed seat is fixedly connected to the outer ring of the second bearing in the fixed seat, and the support shaft is fixedly connected to the inner ring of the second bearing;

[0018] A fixing assembly, arranged on one side of the supporting plate body, for limiting the position of the supporting shaft;

[0019] A limit assembly is arranged on the guide body and the support plate body, and is used to change the working state of the support shaft.

[0020] Furthermore, the fixing assembly includes:

[0021] A limiting column is fixedly connected to one end of the support shaft, and a fixing frame is fixedly connected to one side of the support plate body close to the limiting column;

[0022] A spline rod, spline-connected to the fixing frame, one end of the spline rod close to the limiting column is fixedly connected to a limiting plate, the limiting plate is provided with a limiting blind hole, the limiting column is located in the limiting blind hole of the limiting plate, and the limiting plate is used to limit the limiting column;

[0023] The second tension spring is fixedly connected between the limit plate and the fixing frame, and is used for driving the limit plate to release the limit on the limit column. A blind hole is arranged on one side of the limit plate close to the fixing frame.

[0024] Furthermore, the central axis of the support shaft and the central axis of the limiting column coincide with each other, so as to ensure the stability of the rotation of the support shaft.

[0025] Furthermore, the tension of the second tension spring is greater than the friction between the limit plate and the limit column, and lubricating oil is applied between the limit plate and the limit column to facilitate separation of the limit plate and the limit column.

[0026] Furthermore, the limit assembly includes:

[0027] A telescopic rod 1 is fixedly connected to the fixing frame, and a telescopic end of the telescopic rod 1 passes through the fixing frame and is located in the blind hole of the limiting plate;

[0028] The second telescopic rod is fixedly connected to one side of the guide body, the second telescopic rod is filled with hydraulic oil, and an oil guide pipe is connected between the second telescopic rod and the first telescopic rod;

[0029] A limiting member is fixedly connected to the support plate body, the limiting member is provided with a groove, the telescopic end of the telescopic rod 2 is located in the groove of the limiting member, the telescopic end of the telescopic rod 2 is fixedly connected to two fixed plates, and the limiting member is used to limit the fixed plates on the telescopic ends of the telescopic rod 2.

[0030] Furthermore, a gap is left between the fixing plate at the right end of the second telescopic end of the telescopic rod and the limiting member.

[0031] Furthermore, a limiting sleeve is fixedly connected to one side of the fixing frame close to the limiting plate, the limiting sleeve is in contact with the limiting plate, and the telescopic end of the telescopic rod 1 is located in the limiting sleeve, which is used to protect the telescopic end of the telescopic rod 1.

[0032] The beneficial effects are: 1. According to the Bernoulli principle, the present invention forms a low-pressure area in the middle of the inner shell to clean the flying dust generated at the outlet of the guide body. The flying dust flows into the ventilation pipe through the connecting pipe with the high-pressure air and completes the subsequent collection, thereby avoiding the generation of a large amount of flying dust due to the friction between the guide body and the oxide layer on the steel, thereby causing the flying dust to pollute the workshop environment.

[0033] 2. The present invention changes the working state of the support shaft so that the roller can continue to rotate after the bearing is damaged, thereby preventing the roller from stopping and causing damage to the surface of the steel. In addition, the staff can observe the state between the roller and the support shaft in time according to the height of the spline rod and judge the working state of the device. At the same time, the device can extend the use time to a certain extent, preventing the production line from frequently stopping and causing a decrease in production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0035] Figure 2 It is a cross-sectional view of the connecting pipe, the trumpet pipe and the inner casing of the present invention;

[0036] Figure 3 It is a schematic diagram of the three-dimensional structure of the supporting plate body and rollers and other parts of the present invention;

[0037] Figure 4 It is a schematic diagram of the three-dimensional structure of the guide body and the supporting plate and other parts of the present invention;

[0038] Figure 5 It is a three-dimensional structural schematic diagram of the fixing frame and telescopic rod and other parts of the present invention;

[0039] Figure 6 It is a cross-sectional view of the supporting plate body and rollers and other parts of the present invention;

[0040] Figure 7 is a cross-sectional view of the limiting plate of the present invention;

[0041] Figure 8 It is a schematic diagram of the three-dimensional structure of the support plate, the second telescopic rod and the limiting member of the present invention.

[0042] Marked in the figure: 1-guide body, 2-ventilation pipe, 3-connecting pipe, 4-trumpet pipe, 5-quick interface, 6-inner shell, 7-support plate body, 71-tension spring one, 8-support shaft, 9-roller, 10-bearing one, 11-fixed seat, 12-bearing two, 13-limiting column, 14-fixed frame, 15-spline rod, 16-limiting plate, 17-tension spring two, 18-telescopic rod one, 19-telescopic rod two, 20-limiting piece. DETAILED DESCRIPTION

[0043] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0044] Embodiment 1: An environmentally friendly dust collecting and guiding device, such as Figure 1 and Figure 2As shown, it includes: a guide body 1; a ventilation pipe 2, which is arranged above the guide body 1, and the ventilation pipe 2 is flange-connected with a connecting pipe 3, and the connecting pipe 3 is connected with a trumpet pipe 4, which is located above the outlet of the guide body 1 and is used to clean the oxide dust; a quick interface 5, which is installed on the lower side of the connecting pipe 3, and the quick interface 5 is connected with the connecting pipe 3, and the inner wall of the trumpet pipe 4 is fixedly connected with an inner shell 6, and a gap is left between the upper end of the inner shell 6 and the inner wall of the connecting pipe 3. When high-pressure air flows through the gap between the inner shell 6 and the connecting pipe 3, according to the Bernoulli principle, a low-pressure area will be formed at the connecting pipe 3 and the inner shell 6, which is used to extract the oxide dust and collect it; a guide assembly, which is provided with two, and the two guide assemblies are symmetrically fixed to the outlet of the guide body 1, and are used to guide the steel.

[0045] like Figure 1 , Figure 3 and Figure 4 As shown, the guide assembly includes: a support plate body 7, a slide groove is arranged on the outer side of the guide body 1, the support plate body 7 is slidably connected to the slide groove of the guide body 1, bolts are installed in the slide grooves of the support plate body 7 and the guide body 1, a tension spring 71 is fixedly connected between the support plate body 7 and the guide body 1, and the ears at both ends of the tension spring 71 are respectively sleeved on the bolts in the slide grooves of the support plate body 7 and the guide body 1; a support shaft 8 is through-mounted on the support plate body 7, and a roller 9 is sleeved on the outer side of the support shaft 8; a bearing 10, two of which are arranged, and the two bearings 10 are both installed between the support shaft 8 and the roller 9. The bearing 10 is an existing part, and its internal structure is not shown in the accompanying drawings, which is used to reduce the friction between the two. The support plate body 7 is provided with a slide groove, and a guide plate is installed in the slide groove of the guide body 1. The guide plate on the guide body 1 is located in the slide groove of the support plate body 7 and slides, which is used to limit the support plate body 7 to prevent the support plate body 7 from swinging back and forth.

[0046] In the above scheme, the main purpose is to deal with the flying dust generated by the friction between the oxide scale and the guide during the transmission of steel. The ventilation pipe 2 is connected to the dust collection (filter) box, and the quick interface 5 is connected to the air intake pipe. High-pressure air is injected between the bell tube 4 and the inner shell 6 through the quick interface 5 to deal with the oxide scale dust. The design of the bell tube 4 can be specifically selected according to the shape of the actual transmitted steel.

[0047] Working process: After the staff installs the device at the designated position, the guide body 1 guides the transmitted steel, and at the same time injects high-pressure air into the bell tube 4 through the quick interface 5. The high-pressure air enters between the bell tube 4 and the inner shell 6, and the air flows upward rapidly. According to the Bernoulli principle, a low-pressure area is formed in the middle of the inner shell 6 to clean the flying dust generated at the outlet of the guide body 1. The flying dust flows into the ventilation pipe 2 through the connecting pipe 3 with the high-pressure air, and the subsequent collection is completed to avoid a large amount of flying dust caused by the friction between the guide body 1 and the oxide layer on the steel, thereby polluting the workshop environment with flying dust. When the steel passes through the guide body 1 from left to right and passes between the two rollers 9, the steel drives the two rollers 9 to rotate under the action of friction, and the rollers 9 drive the outer rings of the two bearings 10 to start rotating around the support shaft 8. When the device is stopped, it is only necessary to stop injecting high-pressure air into the bell tube 4.

[0048] Embodiment 2: Based on embodiment 1, Figure 4-Figure 7 As shown, it also includes: an auxiliary fixing mechanism, there are two auxiliary fixing mechanisms in total, and the two auxiliary fixing mechanisms are respectively arranged on adjacent support plates 7, the auxiliary fixing mechanism is used to fix the support shaft 8, and the auxiliary fixing mechanism includes: a fixing seat 11, there are two fixing seats 11 in total, the two fixing seats 11 are symmetrically fixed to the upper and lower sides of the support plate 7, a bearing 2 12 is installed in the fixing seat 11, the bearing 2 12 and the bearing 1 10 have the same structure, the fixing seat 11 is fixed to the outer ring of the bearing 2 12 in it, and the support shaft 8 is fixed to the inner ring of the bearing 2 12; a fixing component is arranged on one side of the support plate 7, and is used to limit the support shaft 8; a limiting component is arranged on the guide body 1 and the support plate 7, and is used to change the working state of the support shaft 8.

[0049] like Figure 6 and Figure 7 As shown, the fixing assembly includes: a limit column 13, fixed to the upper end of the support shaft 8, and the following Figure 1 The front side is taken as an example to support the plate body 7, and the front side of the support plate body 7 is fixedly connected with a fixing frame 14; a spline rod 15, which is splined to the fixing frame 14, and the lower end of the spline rod 15 is fixedly connected to a limit plate 16, and the limit plate 16 is provided with a limit blind hole, and the limit column 13 is located in the limit blind hole of the limit plate 16, and the limit plate 16 is used to limit the limit column 13; a tension spring 17 is fixed between the limit plate 16 and the fixing frame 14, and is used to drive the limit plate 16 to release the limit plate 16. The limiting column 13 is limited, and a blind hole is set on the front side of the limiting plate 16. The central axis of the support shaft 8 and the central axis of the limiting column 13 coincide with each other, which is used to ensure the stability of the rotation of the support shaft 8. The tension of the tension spring 17 is greater than the friction between the limiting plate 16 and the limiting column 13, and lubricating oil is applied between the limiting plate 16 and the limiting column 13 to reduce the friction between the limiting plate 16 and the limiting column 13, so as to facilitate the separation of the limiting plate 16 and the limiting column 13.

[0050] like Figure 1 , Figure 5 and Figure 8 As shown, the limit assembly includes: a telescopic rod 18, which is fixed to the fixed frame 14, the telescopic end of the telescopic rod 18 passes through the fixed frame 14 and is located in the blind hole of the limit plate 16, and the telescopic end of the telescopic rod 18 is slidably connected to the fixed frame 14; a telescopic rod 2 19, which is fixed to the front side of the guide body 1, and the telescopic rod 2 19 is filled with hydraulic oil, and an oil guide pipe is connected between the telescopic rod 2 19 and the telescopic rod 18; a limit member 20, which is fixed to the support plate body 7, and the limit member 20 is provided with a groove, and the telescopic end of the telescopic rod 2 19 is connected to the fixed frame 14. The end is located in the groove of the limit piece 20, the telescopic end of the telescopic rod 19 is fixedly connected to two fixing plates, the limit piece 20 is used to limit the fixing plate on the telescopic end of the telescopic rod 19, and a gap is left between the fixing plate at the right end of the telescopic end of the telescopic rod 19 and the limit piece 20, the rear side of the fixed frame 14 is fixedly connected to a limiting sleeve, the limiting sleeve is in contact with the limiting plate 16, and the telescopic end of the telescopic rod 18 is located in the limiting sleeve, which is used to protect the telescopic end of the telescopic rod 18 to prevent the telescopic rod 18 from bending due to long-term stress.

[0051] In the above scheme, the main purpose is to avoid damage to the steel and avoid frequent shutdowns. The tension spring 71 initially tightens the adjacent support plate body 7, and the support shaft 8 has no interference fit with the bearing 10 and the bearing 2 12. A fixing plate is installed on the upper end of the spline rod 15, and grooves with circumferential equal spacing are arranged on the outer side of the limit column 13. A square plate assembled with the groove of the limit column 13 is arranged in the limit blind hole of the limit plate 16. In the initial state, the limit column 13 is located in the limit blind hole of the limit plate 16.

[0052] Working process: when the steel passes through the guide body 1 from left to right and passes between the two rollers 9, taking the roller 9 on the front side as an example, the roller 9 drives the outer rings of the two bearings 10 to start rotating around the support shaft 8, and because the limiting plate 16 limits the limiting column 13, the support shaft 8 will not drive the inner ring of the bearing 2 12 to rotate. As the use time increases, if the bearing 10 is damaged, the friction of the roller 9 rotating along the support shaft 8 increases or even gets stuck. When the roller 9 and the support shaft 8 are stuck, the rolling friction between the roller 9 and the steel is converted into sliding friction, the friction between the roller 9 and the steel increases, and the friction between the roller 9 and the steel increases. The friction force is greater than the tension of the tension spring 71, and then the steel drives the roller 9 to move right through the friction force, and the roller 9 pulls the support plate body 7 to the right through the support shaft 8, and the support plate body 7 moves to the right along the guide body 1, and the support plate body 7 pulls the tension spring 71, and the tension spring 71 is stretched, and the support plate body 7 drives the limit member 20 to move to the right, and the limit member 20 squeezes the fixed plate on the telescopic end of the telescopic rod 19 to the right, so that the telescopic end of the telescopic rod 19 extends outward, and the hydraulic oil in the telescopic rod 19 flows into the telescopic rod 18 along the oil guide pipe, and the telescopic end of the telescopic rod 18 contracts inward, and the telescopic end of the telescopic rod 18 releases the limit on the limit plate 16.

[0053] After the limit plate 16 is released from the limit, under the tension of the tension spring 2 17, the limit plate 16 drives the spline rod 15 to move upward along the fixed frame 14, and the limit plate 16 loses the coordination with the limit column 13. When the tension spring 2 17 loses its tension, the spline rod 15 and the limit plate 16 stop moving, and the roller 9 drives the support shaft 8 to rotate circumferentially, and the support shaft 8 drives the inner ring of the bearing 2 12 to rotate, so that the roller 9 can continue to rotate, avoiding the surface of the steel being damaged due to the stop of the roller 9. In addition, the staff can observe the state between the roller 9 and the support shaft 8 in time according to the height of the spline rod 15, and judge the working state of the device. At the same time, the device can extend the service life to a certain extent, preventing the frequent shutdown of the production line and causing a decrease in production efficiency.

[0054] When the limit plate 16 releases the limit on the limit column 13, under the tension of the tension spring 1 71, the support plate body 7 moves to the left and resets, and the limit member 20 drives the telescopic end of the telescopic rod 19 to reset, so that the hydraulic oil in the telescopic rod 18 flows back to the telescopic rod 19, and the telescopic end of the telescopic rod 18 is extended again, but the telescopic end of the telescopic rod 18 is not limited by the limit plate 16. When the whole line is overhauled, the staff will promptly overhaul the device, replace the damaged parts, restore the parts on the device to the initial state, and put it back into use.

[0055] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An environmentally friendly dust collection and guiding device, characterized in that: The invention comprises: a guide body (1); A ventilation pipe (2) is arranged above the guide body (1); the ventilation pipe (2) is flange-connected to a connecting pipe (3); the connecting pipe (3) is connected to a trumpet pipe (4); A support plate (7), wherein a slide groove is arranged on the outer side of the guide body (1), the support plate (7) is slidably connected in the slide groove of the guide body (1), and a tension spring (71) is fixedly connected between the support plate (7) and the guide body (1); A support shaft (8) is installed in a penetrating manner on the support plate body (7), and a roller (9) is sleeved on the outer side of the support shaft (8); Bearing 1 (10), two bearings in total are provided, and the two bearings 1 (10) are installed between the support shaft (8) and the roller (9) to reduce the friction between the two; Also included are: Auxiliary fixing mechanisms, two auxiliary fixing mechanisms are provided, the two auxiliary fixing mechanisms are respectively provided on adjacent support plates (7), the auxiliary fixing mechanisms are used to fix the support shaft (8), and the auxiliary fixing mechanisms include: Two fixed seats (11) are provided in total. The two fixed seats (11) are symmetrically fixed to the two sides of the support plate (7). A second bearing (12) is installed in the fixed seat (11). The fixed seat (11) is fixedly connected to the outer ring of the second bearing (12) therein, and the support shaft (8) is fixedly connected to the inner ring of the second bearing (12); A fixing component is arranged on one side of the support plate body (7) and is used to limit the support shaft (8); a limiting component is arranged on the guide body (1) and the support plate body (7) and is used to switch the bearing 1 (10) and the bearing 2 (12) to work alternately.

2. An environmentally friendly dust collection and guiding device according to claim 1, characterized in that: Included are: A quick interface (5) is installed on one side of the connecting pipe (3), the quick interface (5) is connected to the connecting pipe (3), an inner sleeve (6) is fixedly connected to the inner wall of the bell pipe (4), and a gap is left between the upper end of the inner sleeve (6) and the inner wall of the connecting pipe (3).

3. The environmentally friendly dust suction and guiding device according to claim 2, characterized in that: The support plate body (7) is provided with a slide groove, a guide plate is installed in the slide groove of the guide body (1), and the guide plate on the guide body (1) slides in the slide groove of the support plate body (7) to limit the support plate body (7).

4. The environmentally friendly dust suction and guiding device according to claim 3, characterized in that: The fixing assembly comprises: A limiting column (13) is fixedly connected to one end of the support shaft (8); a fixing frame (14) is fixedly connected to one side of the support plate body (7) close to the limiting column (13); A spline rod (15) is spline-connected to the fixing frame (14); one end of the spline rod (15) close to the limiting column (13) is fixedly connected to a limiting plate (16); the limiting plate (16) is provided with a limiting blind hole; the limiting column (13) is located in the limiting blind hole of the limiting plate (16); and the limiting plate (16) is used to limit the limiting column (13); A second tension spring (17) is fixedly connected between the limit plate (16) and the fixing frame (14) and is used to drive the limit plate (16) to release the limit on the limit column (13). A blind hole is provided on one side of the limit plate (16) close to the fixing frame (14).

5. The environmentally friendly dust suction and guiding device according to claim 4, characterized in that: The central axis of the support shaft (8) and the central axis of the limiting column (13) coincide with each other, so as to ensure the stability of the rotation of the support shaft (8).

6. The environmentally friendly dust collecting and guiding device according to claim 5, characterized in that: The tension of the second tension spring (17) is greater than the friction force between the limit plate (16) and the limit column (13), and lubricating oil is applied between the limit plate (16) and the limit column (13), so as to facilitate the separation of the limit plate (16) and the limit column (13).

7. The environmentally friendly dust suction and guiding device according to claim 6, characterized in that: The limit assembly includes: A telescopic rod (18) is fixedly connected to the fixing frame (14), and a telescopic end of the telescopic rod (18) passes through the fixing frame (14) and is located in the blind hole of the limiting plate (16); A second telescopic rod (19) is fixedly connected to one side of the guide body (1), the second telescopic rod (19) is filled with hydraulic oil, and an oil guide pipe is connected between the second telescopic rod (19) and the first telescopic rod (18); A limiting member (20) is fixedly connected to the support plate body (7), the limiting member (20) being provided with a groove, the telescopic end of the second telescopic rod (19) being located in the groove of the limiting member (20), the telescopic end of the second telescopic rod (19) being fixedly connected to two fixed plates, the limiting member (20) being used to limit the fixed plates on the telescopic end of the second telescopic rod (19).

8. The environmentally friendly dust suction and guiding device according to claim 7, characterized in that: A gap is left between the fixing plate at the right end of the telescopic end of the second telescopic rod (19) and the limiting member (20).

9. The environmentally friendly dust suction and guiding device according to claim 8, characterized in that: A limiting sleeve is fixedly connected to one side of the fixing frame (14) close to the limiting plate (16); the limiting sleeve is in contact with the limiting plate (16), and the telescopic end of the telescopic rod (18) is located in the limiting sleeve, which is used to protect the telescopic end of the telescopic rod (18).

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