Position and angle adjustable dust cover device
Patent Information
- Application Number
- CN202522410147.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-13
- Publication Date
- 2026-10-30
- Estimated Expiration
- 2035-11-13
AI Technical Summary
[0003]为了克服现有机械加工车间的生产场景具有多工序、变工件、变位置的特点，而固定吸尘罩的位置与角度固定不变，难以适配动态变化的除尘需求，工人在操作过程中，加工位置会因工件装夹调整、操作习惯等因素发生偏移，而固定吸尘罩无法跟随偏移，固定吸尘罩的适配性缺陷，直接导致除尘效果不佳，不利于保证机械加工车间的加工环境和工人健康的情况，本申请提供一种位置角度可调吸尘罩装置
[0005]通过采用上述技术方案，承载件中的加工台用于支撑整个装置，提供稳定的安装平面；支杆则作为支撑结构，固定在加工台上，用于安装调节件。调节件中的水平滑框和竖直滑框配合使用，使升降滑块能够在不同方向上自由移动，实现对吸尘罩位置和角度的调整。水平滑框上的转板和支杆通过转动连接，能够改变吸尘罩的水平方向；竖直滑框通过滑条和水平滑框的滑动组装，实现了垂直方向上的移动；升降滑块和其上的限位转座进一步增强了垂直方向上的稳定性，转柱通过竖直转动连接在限位转座上，保证了吸尘罩可以灵活转动，适应不同的工作需求。整个装置能够在加工台上灵活调整吸尘罩的位置和角度，使其能更好地对准需要清理的地方，并且通过与吸尘设备的连通组装，确保灰尘和污物的有效收集。
Smart Images
Figure CN224913191U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of vacuum cleaners, and in particular to a vacuum hood device with an adjustable position and angle. Background Technology
[0002] In machining workshops, grinding, cutting, and welding are core production processes. These processes generate a large amount of dust and debris. If these pollutants are not collected in time, they can cause multiple problems. Dust can reduce visibility in the workshop, affecting the precision operation of equipment. Long-term inhalation of metal dust can easily lead to pneumoconiosis in workers. The flying hot debris can also burn the skin. When the metal dust accumulates to a certain concentration, there is a risk of dust explosion, which seriously threatens the safety of production in the workshop. Therefore, as the core of environmental protection in machining workshops, the dust removal efficiency of dust collection equipment directly determines the environmental quality and personnel safety of the workshop. Currently, dust and debris collection in machining workshops mainly relies on the traditional solution of fixed dust hoods and dust collection channels. That is, the dust hood is fixed next to the processing area by a bracket, and the dust hood is connected to a fan through a pipe. The negative pressure is used to suck the dust and debris into the collection box. Although this solution can achieve basic dust removal under certain working conditions. Regarding the aforementioned technologies, the inventors discovered that existing machining workshops are characterized by multiple processes, changing workpieces, and changing positions. However, the fixed position and angle of the dust collection hood remain unchanged, making it difficult to adapt to dynamically changing dust removal needs. During operation, the processing position may shift due to factors such as workpiece clamping adjustments and operating habits, and the fixed dust collection hood cannot follow the shift. The adaptability defect of the fixed dust collection hood directly leads to poor dust removal effect, which is detrimental to ensuring the processing environment and worker health in the machining workshop. Utility Model Content
[0003] To overcome the challenges posed by the multi-process, variable workpiece, and variable position characteristics of existing machining workshops, where the fixed position and angle of the dust collection hood remain unchanged and cannot adapt to dynamically changing dust removal needs, and the shifting of the processing position due to factors such as workpiece clamping adjustments and operating habits during operation, the fixed dust collection hood cannot follow the shift. This lack of adaptability of the fixed dust collection hood directly leads to poor dust removal effect, which is detrimental to ensuring the processing environment and worker health in the machining workshop. This application provides a dust collection hood device with an adjustable position and angle.
[0004] The position and angle adjustable dust collection hood device provided in this application adopts the following technical solution: An adjustable dust hood device includes a support component, an adjusting component, and a dust hood. The support component includes a processing table and a support rod. The support rod is vertically fixed to the center of the bottom surface of the processing table, and an adjusting component is provided on one side of the support rod. The adjusting component includes a horizontal slide frame, a vertical slide frame, and a lifting slider. The horizontal slide frame is horizontally arranged on one side of the support rod, and a rotating plate is horizontally fixed to the end face of the horizontal slide frame near the support rod. The end of the rotating plate is rotatably connected to the support rod. The vertical slide frame is vertically arranged on the upper side of the horizontal slide frame, and a slide bar is fixed to the bottom surface of the vertical slide frame. The slide bar is horizontally slidably assembled on the horizontal slide frame. The lifting slider is vertically slidably assembled on the vertical slide frame, and a limit seat is horizontally fixed to one side of the lifting slider. A rotating column is vertically rotatably connected to the limit seat, and a dust hood is fixed to the top surface of the rotating column. The dust hood is connected and assembled with a dust collection device.
[0005] By adopting the above technical solution, the processing table in the carrier component supports the entire device, providing a stable mounting surface; the support rod, as a supporting structure, is fixed to the processing table and used to install the adjusting components. The horizontal and vertical sliding frames in the adjusting components work together, allowing the lifting slider to move freely in different directions, thus adjusting the position and angle of the dust hood. The rotating plate and support rod on the horizontal sliding frame are rotatably connected, changing the horizontal direction of the dust hood; the vertical sliding frame, through the sliding assembly of the slider and the horizontal sliding frame, achieves vertical movement; the lifting slider and its limiting rotating seat further enhance vertical stability, and the rotating column, vertically rotatably connected to the limiting rotating seat, ensures that the dust hood can rotate flexibly to adapt to different working needs. The entire device can flexibly adjust the position and angle of the dust hood on the processing table, allowing it to better align with the areas needing cleaning, and through its connection with the vacuuming equipment, ensures effective collection of dust and dirt.
[0006] Optionally, a pedal ring plate is vertically slidably inserted into the lower side of the support rod, and a pin is vertically fixed on one side of the top surface of the pedal ring plate. A pedal spring is vertically fixed on the bottom surface of the pedal ring plate, and the bottom end of the pedal spring is fixed to the bottom surface of the support rod.
[0007] By adopting the above technical solution, the support rod serves as a supporting structure, fixing and supporting the pedal ring plate. A pedal spring is fixed to the bottom surface of the pedal ring plate, and the bottom end of the pedal spring is fixed to the bottom surface of the support rod. The spring provides a restoring force, allowing the pedal ring plate to automatically spring back after being pressed. After the perforated ring on the bottom surface of the rotating plate is inserted into the post on the pedal ring plate, the two can rotate relative to each other, giving the entire device a rotational unlocking function. This device, through the sliding and fixing of the pedal ring plate on the support rod, the restoring action of the pedal spring, and the rotational unlocking mechanism of the rotating plate, realizes the function of triggering a brake or switch by pedaling action, and is suitable for application scenarios that require stable support and have a simple triggering mechanism.
[0008] Optionally, a perforated ring is horizontally fixed on the bottom surface of the rotating plate, and the perforated ring is inserted through the post on the foot pedal plate.
[0009] By adopting the above technical solution, the pedal ring plate is slidably inserted into the support rod on its lower side and can slide along the support rod. A pin is fixed on one side of its top surface for insertion into the hole ring on the rotating plate, so that the pedal ring plate can be fixed in a specific position.
[0010] Optionally, a rod plate is inserted horizontally through one side of the slider, and a rubber block is fixed to the bottom of the rod plate near the horizontal sliding frame.
[0011] By adopting the above technical solution, the slider slides horizontally with the rod plate inserted on one side, allowing the rod plate to move horizontally under the constraint of the slider. A rubber block is fixed to the bottom of the rod plate near the horizontal sliding frame, which increases friction, making the rubber block move more smoothly inside the sliding frame, and also provides a certain cushioning effect when subjected to pressure.
[0012] Optionally, a side tension spring is horizontally fixed on the rod plate, and the other end of the side tension spring is fixed to the slide bar.
[0013] By adopting the above technical solution, the side tension spring is horizontally fixed to the rod plate and fixed to the slide bar at the other end. When the rod plate moves due to external force, the spring can provide a restoring force, so that the rod plate can automatically return to the initial position. This design improves the stability and reset capability of the structure.
[0014] Optionally, a lifting screw is vertically rotatably connected to the vertical slide frame, and a screw hole seat is horizontally fixed on the lifting slider, with the screw hole seat and the lifting screw threaded through each other.
[0015] By adopting the above technical solution, the vertical slide frame serves as a support structure to fix and support the lifting screw, enabling it to rotate vertically. The lifting screw is mounted on the vertical slide frame via a vertical rotational connection to achieve threaded transmission. The lifting slider is connected to the vertically rotating lifting screw via a threaded hole seat fixed horizontally on the slider, allowing the threaded hole seat to move vertically up and down under the action of the lifting screw's thread. By rotating the lifting screw, precise lifting and lowering movements of the lifting slider can be achieved, thereby enabling adjustment and control of the slider's position in the vertical direction.
[0016] Optionally, a retaining sleeve is vertically slidably fitted at the bottom of the rotating column, and a pressing spring is vertically fixed on the top surface of the retaining sleeve, with the top end of the pressing spring fixed on the top surface of the rotating column.
[0017] By adopting the above technical solution, the rotating column is vertically slidably fitted into the clamping sleeve at its bottom, serving as support and guide, allowing the rotating column to rotate along a specific path. A pressing spring is vertically fixed to the top surface of the clamping sleeve. This pressing spring deforms when subjected to external force, providing a restoring force through its elasticity. The top surface of the rotating column fixes the tip of the pressing spring, enabling the pressing spring to generate a corresponding elastic force according to changes in external force.
[0018] Optionally, the cartridge and the limiting rotary seat are vertically limited and slidably inserted.
[0019] By adopting the above technical solution, the chuck and the limiting rotary seat are vertically limited and slidably inserted to ensure that their movement in the vertical direction is restricted and that they can move up and down within a limited range.
[0020] In summary, this application includes at least one of the following beneficial technical effects: Through a four-level adjustment structure (angle adjustment, horizontal adjustment, height adjustment, and fine-tuning), combined with spring-driven rapid locking, dynamic adaptation across all scenarios is achieved. When the processing procedure switches from grinding to cutting or welding, the worker only needs to step on the foot pedal ring plate on the support rod, squeezing the foot pedal spring to disengage the insert from the hole ring of the rotating plate, thus rotating the rotating plate to adjust the dust hood angle. After releasing the foot pedal ring plate, the spring resets, pushing the insert into the corresponding hole ring. This reduces the time required for a single angle switch, improving efficiency compared to traditional multi-hood switching. When processing workpieces of different widths or when the processing position shifts, pulling the rod plate on the slider causes the side-pulling spring to deform, causing the rubber block to disengage from the horizontal sliding frame and pushing the vertical sliding frame to move horizontally on the horizontal sliding frame. After releasing the rod plate, the rubber block presses against the horizontal sliding frame under the spring force. Ensure horizontal stability; rotate the lifting screw on the vertical slide frame to drive the lifting slider and move the dust hood vertically. When the processing position deviates slightly or needs to be precisely aligned with the dust generation point, pull the clamp on the rotating column, press the spring to deform the clamp and disengage it from the limiting rotating seat. Rotate the rotating column to achieve fine adjustment of the dust hood, ensuring alignment between the dust inlet and the processing point. After releasing the clamp, the spring returns to its original position and pushes the clamp into the limiting rotating seat, locking the fine adjustment angle and preventing angle deviation caused by processing vibration. Through the synergistic innovation of multi-dimensional mechanical adjustment, rapid locking, and precise dust collection, the core problems of poor adaptability, poor dust removal effect, and high operating cost of traditional fixed dust hoods are completely solved. Dynamic adaptation is achieved for all processes, all sizes, and all positional deviation scenarios, improving dust collection rate and fundamentally protecting the workshop environment and worker health. Attached Figure Description
[0021] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application; Figure 2 This is a schematic diagram of the overall structure of the embodiment of this application in an exploded state; Figure 3This is a schematic diagram of the structure of the carrier in the disassembled state according to an embodiment of this application; Figure 4 This is a schematic diagram of the structure of the adjusting component in the disassembled state according to an embodiment of this application; Figure 5 This is a schematic diagram of the lifting slider in the exploded state according to an embodiment of this application.
[0022] Explanation of reference numerals in the attached drawings: 1. Bearing component; 11. Processing table; 12. Support rod; 13. Foot ring plate; 14. Foot spring; 2. Adjusting component; 21. Horizontal slide frame; 22. Rotating plate; 221. Hole ring; 23. Slide bar; 24. Rod plate; 241. Side tension spring; 242. Rubber block; 25. Vertical slide frame; 26. Lifting screw; 27. Lifting slider; 271. Limiting rotating seat; 272. Screw hole seat; 28. Rotating column; 29. Clamping sleeve; 291. Pressing spring; 3. Dust suction hood. Detailed Implementation
[0023] The present application will be further described in detail below with reference to the accompanying drawings.
[0024] This application discloses a dust collection hood device with an adjustable position and angle. (Refer to...) Figure 1 , Figure 2 , Figure 3 and Figure 4 An adjustable dust hood device includes a support member 1, an adjusting member 2, and a dust hood 3. The support member 1 includes a processing table 11 and a support rod 12. The support rod 12 is vertically fixed in the middle of the bottom surface of the processing table 11, and the adjusting member 2 is provided on one side of the support rod 12. The adjusting member 2 includes a horizontal sliding frame 21, a vertical sliding frame 25, and a lifting slider 27. The horizontal sliding frame 21 is horizontally arranged on one side of the support rod 12, and a rotating plate 22 is horizontally fixed on the end face of the horizontal sliding frame 21 near the support rod 12. The vertical slide frame 25 is rotatably connected to the support rod 12. The vertical slide frame 25 is vertically set on the upper side of the horizontal slide frame 21. A slide bar 23 is fixed on the bottom surface of the vertical slide frame 25. The slide bar 23 is horizontally slidably assembled on the horizontal slide frame 21. The lifting slider 27 is vertically slidably assembled in the vertical slide frame 25. A limit rotating seat 271 is horizontally fixed on one side of the lifting slider 27. A rotating column 28 is vertically rotatably connected to the limit rotating seat 271. A dust suction hood 3 is fixed on the top surface of the rotating column 28. The dust suction hood 3 is connected and assembled with the dust collection equipment.
[0025] By adopting the above technical solution, the processing table 11 in the carrier 1 supports the entire device and provides a stable mounting surface; the support rod 12 serves as a support structure, fixed on the processing table 11, and is used to install the adjusting component 2. The horizontal sliding frame 21 and the vertical sliding frame 25 in the adjusting component 2 work together to allow the lifting slider 27 to move freely in different directions, thereby adjusting the position and angle of the dust hood 3. The rotating plate 22 on the horizontal sliding frame 21 and the support rod 12 are rotatably connected, which can change the horizontal direction of the dust hood 3; the vertical sliding frame 25 achieves vertical movement through the sliding assembly of the sliding bar 23 and the horizontal sliding frame 21; the lifting slider 27 and the limiting rotating seat 271 on it further enhance the stability in the vertical direction, and the rotating column 28 is vertically rotatably connected to the limiting rotating seat 271, ensuring that the dust hood 3 can rotate flexibly to adapt to different working needs. The entire device can flexibly adjust the position and angle of the dust hood 3 on the processing table, so that it can be better aligned with the area to be cleaned, and through the connection assembly with the vacuuming equipment, it ensures the effective collection of dust and dirt.
[0026] Reference Figure 3 and Figure 4 A foot pedal ring plate 13 is vertically slidably inserted into the lower side of the support rod 12. A pin is vertically fixed to one side of the top surface of the foot pedal ring plate 13, and a foot pedal spring 14 is vertically fixed to the bottom surface of the foot pedal ring plate 13, with the bottom end of the foot pedal spring 14 fixed to the bottom surface of the support rod 12. The support rod 12 serves as a supporting structure, fixing and supporting the foot pedal ring plate 13. The foot pedal spring 14 is fixed to the bottom surface of the foot pedal ring plate 13, and its bottom end is fixed to the bottom surface of the support rod 12. The spring provides a restoring force, allowing the foot pedal ring plate 13 to automatically spring back after being pressed. After the perforated ring 221 on the bottom surface of the rotating plate 22 is inserted into the pin on the foot pedal ring plate 13, the two can rotate relative to each other, giving the entire device a rotation unlocking function. This device, through the sliding and fixing of the foot ring plate 13 on the support rod 12, and the reset action of the foot spring 14, combined with the rotation unlocking mechanism of the rotating plate 22, realizes the function of triggering a brake or switch by foot action. It is suitable for application scenarios that require stable support and simple triggering mechanisms. A perforated ring 221 is horizontally fixed on the bottom surface of the rotating plate 22, and the perforated ring 221 is inserted through a post on the foot ring plate 13. The foot ring plate 13 is slidably inserted into the support rod 12 on its lower side, and can slide along the support rod. A post is fixed on one side of its top surface for insertion into the perforated ring 221 on the rotating plate 22, so that the foot ring plate 13 can be fixed in a specific position.
[0027] Reference Figure 4 and Figure 5A rod plate 24 is horizontally inserted through one side of the slider 23, and a rubber block 242 is fixed to the bottom of the rod plate 24 near the horizontal sliding frame 21. The slider 23, with the rod plate 24 horizontally inserted through one side, allows the rod plate 24 to move horizontally under the constraint of the slider 23. The rubber block 242 is fixed to the bottom of the rod plate 24 near the horizontal sliding frame 21, increasing friction and making its movement within the sliding frame 21 more stable, while also providing a cushioning effect under pressure. A side tension spring 241 is horizontally fixed to the rod plate 24, with its other end fixed to the slider 23. The side tension spring 241, horizontally fixed to the rod plate 24 and its other end fixed to the slider 23, provides a restoring force when the rod plate 24 moves due to external force, allowing it to automatically return to its initial position. This design improves the stability and reset capability of the structure.
[0028] Reference Figure 4 and Figure 5 A lifting screw 26 is vertically rotatably connected to a vertical sliding frame 25, and a screw hole seat 272 is horizontally fixed to a lifting slider 27, with the screw hole seat 272 threadedly connected to the lifting screw 26. The vertical sliding frame 25 serves as a support structure, fixing and supporting the lifting screw 26, allowing it to rotate vertically. The lifting screw 26 is mounted on the vertical sliding frame 25 via a vertical rotatable connection to achieve threaded transmission. The lifting slider 27 is connected to the vertically rotating lifting screw 26 via the screw hole seat 272, which is horizontally fixed to the slider, allowing the screw hole seat 272 to move vertically up and down under the action of the screw thread of the lifting screw 26. By rotating the lifting screw 26, precise lifting and lowering movements of the lifting slider 27 can be achieved, thereby enabling adjustment and control of the slider's position in the vertical direction. A retaining sleeve 29 is vertically slidably fitted at the bottom of the rotating column 28, and a pressing spring 291 is vertically fixed on the top surface of the retaining sleeve 29, with the top end of the pressing spring 291 fixed to the top surface of the rotating column 28. The rotating column 28, vertically slidably fitted in the retaining sleeve 29 at its bottom, serves as support and guide, allowing the rotating column 28 to rotate along a specific path. A pressing spring 291 is vertically fixed on the top surface of the retaining sleeve 29. This pressing spring 291 deforms under external force, providing a restoring force through its elasticity. The top end of the pressing spring 291 is fixed to the top surface of the rotating column 28, allowing the pressing spring 291 to generate a corresponding elastic force according to changes in external force. The retaining sleeve 29 is vertically limited and slidably inserted into the limiting rotating seat 271. This vertical limitation and sliding insertion ensures that the movement of the retaining sleeve 29 in the vertical direction is restricted, guaranteeing that it can move up and down within a limited range.
[0029] The implementation principle of the adjustable dust hood device according to an embodiment of this application is as follows: First, place the workpiece to be processed on the top surface of the processing table 11 of the support 1. According to the dust suction position angle requirements of the workpiece on the processing table 11, when adjusting the dust suction position angle of the dust suction hood 3, first move the foot ring plate 13 on the foot support rod 12 down, squeeze the foot spring 14 to deform, so that the insert on the top surface of the foot ring plate 13 is pulled out of the hole ring 221 on the rotating plate 22. Then rotate the rotating plate 22 on the support rod 12. After switching the dust suction angle position of the dust suction hood 3 on the workpiece, release the foot ring plate 13. Under the deformation force of the foot spring 14, push the insert on the foot ring plate 13 into the hole ring 221 on the rotating plate 22, and lock the dust suction angle position of the dust suction hood 3 on the workpiece. Then, according to the width of the workpiece, pull the rod plate 24 on the slide bar 23 to move outward and pull the side tension spring 241 to deform, so that the rubber block 242 on the rod plate 24 moves away from the horizontal slide frame 21, and pushes the vertical slide frame 25 to move horizontally on the horizontal slide frame 21, switching the dust suction hood 3 to the workpiece. After completion, release the rod plate 24. Under the deformation force of the side tension spring 241, push the rod plate 24 to slide on the slide bar 23, so that the rubber block 242 on the rod plate 24 presses against the horizontal slide frame 21, ensuring that the dust suction hood 3 is stable in the workpiece. Similarly, rotate the lifting screw 26 on the vertical slide frame 25 to vertically drive the lifting slider 27 to slide vertically on the vertical slide frame 25, and adjust the dust suction height of the dust suction hood 3 to the workpiece in the vertical direction. Finally, when fine-tuning the suction angle of the dust hood 3 according to the processing position, pull the clamp 29 on the rotating column 28 to slide vertically upward, causing the clamp 29 to slide vertically upward from the limiting rotating seat 271, squeezing the pressing spring 291, and then rotating the rotating column 28 to deflect on the limiting rotating seat 271 to fine-tune the suction angle of the dust hood 3. After the adjustment is completed, release the clamp 29 and press the spring 291 to push the clamp 29 to be inserted into the limiting rotating seat 271 to ensure the stability of the fine-tuned suction angle of the dust hood 3.
[0030] 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 position and angle adjustable dust collection hood device, characterized in that, The system includes a support component (1), an adjusting component (2), and a dust collection hood (3). The support component (1) includes a processing table (11) and a support rod (12). The support rod (12) is vertically fixed in the middle of the bottom surface of the processing table (11), and an adjusting component (2) is provided on one side of the support rod (12). The adjusting component (2) includes a horizontal sliding frame (21), a vertical sliding frame (25), and a lifting slider (27). The horizontal sliding frame (21) is horizontally arranged on one side of the support rod (12), and a rotating plate (22) is horizontally fixed on one end face of the horizontal sliding frame (21) near the support rod (12). The end of the rotating plate (22) is rotatably connected to... On the support rod (12), the vertical slide frame (25) is vertically arranged on the upper side of the horizontal slide frame (21), and a slide bar (23) is fixed on the bottom surface of the vertical slide frame (25). The slide bar (23) is horizontally slidably assembled on the horizontal slide frame (21). The lifting slider (27) is vertically slidably assembled in the vertical slide frame (25). A limit rotating seat (271) is horizontally fixed on one side of the lifting slider (27). A rotating column (28) is vertically rotatably connected to the limit rotating seat (271). The dust suction hood (3) is fixed on the top surface of the rotating column (28). The dust suction hood (3) is connected and assembled with the dust collection equipment.
2. The adjustable dust collection hood device according to claim 1, characterized in that: A foot ring plate (13) is vertically slidably inserted into the lower side of the support rod (12), and a pin is vertically fixed on one side of the top surface of the foot ring plate (13), and a foot spring (14) is vertically fixed on the bottom surface of the foot ring plate (13), and the bottom end of the foot spring (14) is fixed on the bottom surface of the support rod (12).
3. The adjustable dust collection hood device according to claim 2, characterized in that: A perforated ring (221) is horizontally fixed on the bottom surface of the rotating plate (22), and the perforated ring (221) is inserted through the post on the stepping ring plate (13).
4. The adjustable dust hood device according to claim 1, characterized in that: A rod plate (24) is horizontally slidably inserted through one side of the slide bar (23), and a rubber block (242) is fixed to the bottom of the rod plate (24) near the side of the horizontal slide frame (21).
5. The adjustable dust hood device according to claim 4, characterized in that: A side tension spring (241) is horizontally fixed on the rod plate (24), and the other end of the side tension spring (241) is fixed on the slide bar (23).
6. The adjustable dust collection hood device according to claim 1, characterized in that: The vertical sliding frame (25) is vertically rotatably connected to a lifting screw (26), and the lifting slider (27) is horizontally fixed with a screw hole seat (272), and the screw hole seat (272) and the lifting screw (26) are threaded through and assembled.
7. The adjustable dust collection hood device according to claim 1, characterized in that: The bottom of the rotating column (28) is vertically slidably fitted with a retaining sleeve (29), and a pressing spring (291) is vertically fixed on the top surface of the retaining sleeve (29), and the top end of the pressing spring (291) is fixed on the top surface of the rotating column (28).
8. The adjustable dust collection hood device according to claim 7, characterized in that: The cassette (29) and the limiting rotary seat (271) are vertically limited and slidably inserted.