Air suction hood device capable of adjusting coverage area

Abstract

The utility model relates to the technical field of flue gas purification equipment, in particular to a suction hood device capable of adjusting a coverage area, which comprises a hood body, the hood body is of a big-end-down trumpet-shaped structure, a cross rod is mounted on one side of the top of the hood body, a vertical rod is mounted at the bottom of one end, far away from the hood, of the cross rod, and an exhaust pipe is connected to the top end of the hood body. An opening is formed in the bottom of the cover body, a rotating shaft is vertically and rotationally arranged in the cover body, a lead screw sliding block is installed on the rotating shaft in a threaded mode, a plurality of lifting rods are transversely installed on the outer side of the lead screw sliding block, a pin shaft is installed at the outer end of each lifting rod, a plurality of adjusting rods are installed on the inner side of the cover body, and sliding holes are formed in the outer walls of the adjusting rods. The pin shaft is arranged in the sliding hole in a sliding fit mode. According to the suction hood device capable of adjusting the coverage area, the motor is used for driving the rotating shaft to rotate, then the lead screw sliding block and the lifting rod are used for driving the adjusting rod to conduct sliding adjustment on the inner side of the hood body, and therefore the size of an opening of the hood body can be flexibly changed.

Description

Technical Field

[0001] This utility model relates to the technical field of flue gas purification equipment, and more specifically, to a suction hood device capable of adjusting the coverage area. Background Technology

[0002] The generation of welding fumes is unavoidable during welding operations. These fumes not only pollute the environment but also pose a serious threat to workers' health. To effectively collect and purify the fumes generated during welding, welding fume extractors are widely used in various welding workplaces. As a crucial component of welding fume extractors, the design and performance of the fume extraction hood directly affect the collection efficiency and purification effect.

[0003] Traditional welding fume extractor hoods typically employ a fixed structure with non-adjustable size and shape. This results in poor adaptability to varying welding conditions and fume levels. When welding operations generate large amounts of fume or cover a wide area, the fixed structure may fail to effectively cover the entire area, causing fume to escape and affecting purification efficiency. Furthermore, the fixed structure cannot be flexibly adjusted to accommodate welding operations at different heights, further limiting its effectiveness. Utility Model Content

[0004] The purpose of this utility model is to provide an air hood device that can adjust the coverage area, so as to solve the problem mentioned in the background art that the traditional welding fume purifier air hood usually adopts a fixed structure and the size and shape of the hood cannot be adjusted, which leads to poor adaptability of the air hood when facing different welding conditions and the amount of fume generated.

[0005] To achieve the above objectives, this utility model provides an adjustable air intake hood device, comprising a hood body, the hood body being a trumpet-shaped structure with a smaller top and a larger bottom. A horizontal bar is installed on one side of the top of the hood body, and a vertical bar is installed at the bottom of the end of the horizontal bar away from the hood body. An exhaust pipe is connected to the top of the hood body, and an opening is provided at the bottom of the hood body. A rotating shaft is vertically rotatable inside the hood body, and a lead screw slider is threaded onto the rotating shaft. Several lifting rods are horizontally installed along the circumferential direction on the outer side of the lead screw slider, and a pin is installed at the end of each lifting rod away from the lead screw slider. Several adjusting rods are installed along the circumferential direction on the inner side of the hood body, and sliding holes are provided on the outer wall of the adjusting rods. The pins are slidably engaged in the sliding holes. A fixing plate is installed on the top of the hood body, and the top ends of the adjusting rods are all hinged to the fixing plate.

[0006] Preferably, a smoke guide pipe is installed on the top of the fixing plate, and the exhaust pipe is connected to the top of the smoke guide pipe.

[0007] Preferably, the top of the smoke guide tube is connected to the bottom of one end of the crossbar.

[0008] Preferably, the top end of the shaft is driven to rotate by a motor.

[0009] Preferably, the cover is made of silicone material, and a plurality of the adjusting rods are arranged in a ring at equal intervals on the inner side of the cover.

[0010] Preferably, the top circumferential edge of the fixing plate is provided with an exhaust port, and the top of the exhaust port is connected to the smoke guide pipe.

[0011] Preferably, the top end of the rotating shaft is rotatably connected to the fixed plate via a bearing.

[0012] Preferably, the bottom end of the vertical rod is fixed to the ground with bolts.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] This adjustable-coverage fume hood features an innovative design that allows for adjustable bottom opening size, significantly enhancing its adaptability to various welding conditions and fume generation levels. The device utilizes a motor-driven rotating shaft, which in turn drives an adjusting rod within the hood via a lead screw, slider, and lifting rod, enabling flexible changes in the hood opening size. This design not only ensures effective coverage of work areas of varying widths, preventing fume escape, but also allows for flexible adjustment based on welding height, further improving fume collection efficiency and purification effectiveness. Therefore, this adjustable-coverage fume hood provides a more efficient and reliable fume purification solution for welding operations, effectively protecting worker health and environmental safety. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a partial structural schematic diagram of the present invention;

[0017] Figure 3 This is a schematic diagram of the inner structure of the cover in this utility model;

[0018] The meanings of the labels in the diagram are as follows:

[0019] 1. Cover body; 11. Fixing plate; 111. Exhaust port; 12. Rotating shaft; 13. Screw slider; 14. Lifting rod; 141. Pin shaft; 15. Adjusting rod; 151. Sliding hole; 16. Motor; 17. Smoke guide pipe; 2. Exhaust pipe; 3. Horizontal bar; 4. Vertical bar. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] This utility model provides an air intake hood device capable of adjusting the coverage area, such as... Figures 1-3 As shown, the device includes a cover 1, which is a trumpet-shaped structure that is smaller at the top and larger at the bottom. A horizontal bar 3 is installed on one side of the top of the cover 1, and a vertical bar 4 is installed at the bottom of the end of the horizontal bar 3 away from the cover 1. An exhaust pipe 2 is connected to the top of the cover 1, and an opening is provided at the bottom of the cover 1. A rotating shaft 12 is vertically rotatable inside the cover 1, and a lead screw slider 13 is threaded onto the rotating shaft 12. Several lifting rods 14 are horizontally installed on the outer side of the lead screw slider 13 along the circumferential direction. A pin 141 is installed at the end of each lifting rod 14 away from the lead screw slider 13. Several adjusting rods 15 are installed on the inner side of the cover 1 along the circumferential direction. A sliding hole 151 is provided on the outer wall of the adjusting rod 15, and the pin 141 is slidably engaged in the sliding hole 151. A fixing plate 11 is installed on the top of the cover 1, and the top ends of the adjusting rods 15 are all hinged to the fixing plate 11.

[0022] In use, the device can flexibly adjust the size of the opening at the bottom of the cover 1 by means of the vertically arranged rotating shaft 12 inside the cover 1, in conjunction with the linkage mechanism of the lead screw slider 13, the lifting rod 14, and the pin 141. The sliding engagement between the sliding hole 151 on the outer wall of the adjusting rod 15 and the pin 141 ensures the smoothness and precision of the adjustment process, while the hinged design between the top of the adjusting rod 15 and the fixed plate 11 further enhances the stability and practicality of the device.

[0023] In this embodiment, a smoke guide pipe 17 is installed on the top of the fixing plate 11, and the exhaust pipe 2 is connected to the top of the smoke guide pipe 17. The connection between the hood 1, the smoke guide pipe 17, and the exhaust pipe 2 effectively ensures the stability of the suction hood structure and the smooth flow of smoke. The smoke guide pipe 17 not only provides a clear channel for the collection and emission of smoke, but also helps to improve the purification efficiency of the smoke and reduce the residence time of smoke and dust inside the hood, thereby further optimizing the welding working environment.

[0024] Specifically, the top of the smoke guide pipe 17 is connected to the bottom of one end of the crossbar 3. This design enhances the rigidity and stability of the overall structure of the suction hood. During welding operations, even when faced with significant smoke impact or external interference, the suction hood remains stable and its smoke collection efficiency is not affected by vibration or shaking.

[0025] Furthermore, the top of the rotating shaft 12 is driven to rotate by a motor 16, which is located inside the smoke guide pipe 17 and fixedly mounted on the top center of the fixed plate 11. The motor 16 drives the rotating shaft 12 to rotate, which in turn causes the lead screw slider 13 to move up and down, thereby causing the lifting rod 14 to rotate the adjusting rod 15, thus achieving automatic adjustment of the suction hood opening size. The introduction of the motor 16 not only improves the accuracy and response speed of the adjustment but also allows operators to remotely control the opening size of the suction hood, making it more convenient to adapt to different welding conditions and dust generation levels.

[0026] Furthermore, the cover 1 is made of silicone material, and several adjusting rods 15 are arranged in a ring at equal intervals on the inner side of the cover 1. The silicone material of the cover 1 provides good flexibility and elasticity, effectively adapting to changes in the size of the bottom opening. Simultaneously, the ring-shaped arrangement of the adjusting rods 15 on the inner side of the cover 1 ensures the uniformity and consistency of the opening size adjustment, further improving the efficiency of dust collection.

[0027] Furthermore, an exhaust port 111 is provided on the top circumferential edge of the fixing plate 11, and the top of the exhaust port 111 is connected to the smoke guide pipe 17. The exhaust port 111 provides a smooth channel for the rapid discharge of flue gas. This design helps to reduce the accumulation and backflow of flue gas in the hood, thereby improving the flue gas purification efficiency and the effectiveness of the hood.

[0028] Furthermore, the top end of the rotating shaft 12 is rotatably connected to the fixed plate 11 via a bearing, ensuring the stability and smoothness of the rotating shaft during rotation. The introduction of the bearing not only reduces friction and wear during shaft rotation but also improves the service life and reliability of the intake hood.

[0029] Furthermore, the bottom end of the vertical rod 4 is fixed to the ground with bolts. The vertical rod 4 provides solid support and a stable foundation for the suction hood. This design ensures that the suction hood will not move or tip over due to external forces during welding operations, thereby guaranteeing the safety of the operators and the smooth progress of the welding operation.

[0030] When using the adjustable-coverage air intake hood device of this utility model, if it is necessary to adjust the size of the opening at the bottom of the hood 1, the operator first starts the motor 16, which drives the rotating shaft 12 to start rotating. As the rotating shaft 12 rotates, the lead screw slider 13 mounted on the rotating shaft begins to move axially, thereby driving the lifting rod 14 mounted laterally on the outside to move up and down.

[0031] A pin 141 is installed at the outer end of the lifting rod 14, and the pin 141 is slidably engaged with a sliding hole 151 on the outer wall of the adjusting rod 15 installed inside the cover 1. Therefore, when the lifting rod 14 moves up and down, the pin 141 slides within the sliding hole 151, thereby pushing or pulling the adjusting rod 15 to move inside the cover 1. Since the top end of the adjusting rod 15 is hinged to the fixed plate 11, the movement of the adjusting rod 15 will cause the size of the opening at the bottom of the cover 1 to change.

[0032] During adjustment, the cover 1 is made of silicone material, which has good flexibility and elasticity, and can effectively adapt to changes in the size of the opening at the bottom of the cover 1. At the same time, the adjusting rods 15 are arranged in a ring at equal intervals on the inner side of the cover 1, ensuring the uniformity and consistency of the adjustment of the cover opening size.

[0033] Furthermore, the mounting plate 11 and the smoke guide pipe 17 on the top of the hood 1 not only enhance the stability and rigidity of the overall structure of the hood, but also provide a clear channel for the collection and emission of smoke. The exhaust port 11 on the mounting plate 11 is connected to the smoke guide pipe 17, providing a smooth channel for the rapid emission of smoke and helping to reduce the accumulation and backflow of smoke inside the hood.

[0034] Finally, the bottom of the vertical rod 4 is fixed to the ground with bolts, providing solid support and a stable foundation for the suction hood, ensuring that the suction hood will not move or tip over due to external forces during the welding operation.

[0035] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An air intake hood device capable of adjusting the coverage area, comprising a hood body (1), characterized in that: The cover (1) has a trumpet-shaped structure that is smaller at the top and larger at the bottom. A horizontal bar (3) is installed on one side of the top of the cover (1). A vertical bar (4) is installed at the bottom of the end of the horizontal bar (3) away from the cover (1). An exhaust pipe (2) is connected to the top of the cover (1). An opening is provided at the bottom of the cover (1). A rotating shaft (12) is vertically rotatable inside the cover (1). A lead screw slider (13) is threaded on the rotating shaft (12). The outer side of the lead screw slider (13) is horizontally mounted along the circumferential direction. The cover (1) is equipped with several lifting rods (14), and each lifting rod (14) is equipped with a pin (141) at one end away from the lead screw slider (13). Several adjusting rods (15) are installed on the inner side of the cover (1) along the circumferential direction. The outer wall of the adjusting rod (15) is provided with a sliding hole (151). The pin (141) is set in the sliding hole (151) for sliding cooperation. A fixing plate (11) is installed on the top of the cover (1). The top ends of the adjusting rods (15) are all hinged to the fixing plate (11).

2. The air intake hood device capable of adjusting the coverage area according to claim 1, characterized in that: The top of the fixed plate (11) is equipped with a smoke guide pipe (17), and the exhaust pipe (2) is connected to the top of the smoke guide pipe (17).

3. The air intake hood device capable of adjusting the coverage area according to claim 2, characterized in that: The top of the smoke guide tube (17) is connected to the bottom of one end of the crossbar (3).

4. The air intake hood device capable of adjusting the coverage area according to claim 1, characterized in that: The top of the shaft (12) is driven to rotate by a motor (16).

5. The air intake hood device capable of adjusting the coverage area according to claim 1, characterized in that: The cover (1) is made of silicone material, and several of the adjusting rods (15) are arranged in a ring at equal intervals on the inner side of the cover (1).

6. The air intake hood device capable of adjusting the coverage area according to claim 2, characterized in that: The top circumferential edge of the fixing plate (11) is provided with an exhaust port (111), and the top of the exhaust port (111) is connected to the smoke guide pipe (17).

7. The air intake hood device capable of adjusting the coverage area according to claim 1, characterized in that: The top end of the rotating shaft (12) is rotatably connected to the fixed plate (11) via a bearing.

8. The air intake hood device capable of adjusting the coverage area according to claim 1, characterized in that: The bottom end of the vertical rod (4) is fixed to the ground by bolts.

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