Industrial local fan with silencing device

Abstract

The embodiment of the application provides an industrial local ventilator with a silencing device, and relates to the technical field of local ventilators. The local ventilator comprises a local ventilator main body, a limiting groove is formed in the outer wall of the local ventilator main body, a through hole is symmetrically formed in the inner wall of the limiting groove, a movable plate is movably sleeved in the limiting groove, and a rotating shaft is symmetrically movably sleeved on one side of the movable plate. By rotating the rotating shaft, the first bevel gear is driven to rotate, the second bevel gear is driven to rotate through the meshing of the first bevel gear, the two side screws are driven to rotate, the threaded block is threadedly moved on the surface of the screw, the threaded block slides out of the sliding groove and is then movably embedded in the through hole, the movable plate is fixed in the limiting groove, the soundproof cotton is attached to the inner wall, the amplitude is reduced through the soundproof cotton to reduce noise, and the soundproof cotton is prevented from being exposed to the outside and covered with dust under long-term use of the ventilation pipe, so that the overall silencing effect is affected.

Description

Technical Field

[0001] This application relates to the field of local ventilation fan technology, and more particularly to an industrial local ventilation fan with a noise reduction device. Background Technology

[0002] Industrial ventilators are important pieces of equipment that rely on input mechanical energy to increase gas pressure and discharge gas. They are widely used in various industrial fields, such as chemical, steel, power, and cement industries, and are one of the indispensable pieces of equipment in modern industrial production. Their main functions include ventilation, temperature reduction, and smoke and dust discharge.

[0003] However, in the case of an existing industrial local ventilation fan with a sound-absorbing device, dust can easily accumulate on the sound-absorbing panels and sound-absorbing cotton after long-term use if they are exposed to the outside. This will affect the sound-absorbing effect of the sound-absorbing panels and sound-absorbing cotton. In addition, the sound-absorbing panels and sound-absorbing cotton have a certain service life and need to be replaced after the sound-absorbing effect is reduced. Utility Model Content

[0004] In view of the above problems, this application provides an industrial local ventilation fan with a silencing device to solve the problems of existing industrial local ventilation fans with silencing devices, where dust easily accumulates on the sound-absorbing panels and sound-absorbing cotton after long-term use, which affects the sound-absorbing effect of the sound-absorbing panels and sound-absorbing cotton. At the same time, the sound-absorbing panels and sound-absorbing cotton have a certain service life and need to be replaced after the sound-absorbing effect is reduced.

[0005] This application provides an industrial local ventilation fan with a noise reduction device. It includes a main body of the local ventilation fan, with a limiting groove formed on the outer wall of the main body. Symmetrical through holes are formed on the inner wall of the limiting groove. A movable plate is movably sleeved inside the limiting groove. A rotating shaft is symmetrically movably sleeved on one side of the movable plate. A first bevel gear is fixedly installed on one side of the rotating shaft. The first bevel gear meshes with a second bevel gear. A screw is fixedly installed on one side of the second bevel gear. A threaded block meshes with the outer wall of the screw. Sound-absorbing cotton is installed on one side of the movable plate.

[0006] The above method involves installing sound insulation cotton on one side of the movable plate, then inserting the movable plate into the limiting groove. Turning the shaft rotates the first bevel gear, which in turn rotates the second bevel gear, causing the screws on both sides to rotate. This causes the threaded blocks to move threadedly on the screw surface, slide out of the groove, and then insert into the through hole, fixing the movable plate in the limiting groove. The sound insulation cotton is then adhered to the inner wall, reducing vibration amplitude and noise.

[0007] In some embodiments, a slider is fixedly installed on the outer wall of the threaded block, and the threaded block and the slider are movably sleeved inside the groove.

[0008] With the above solution, when the threaded block is driven to slide out of the groove, the slider also slides in the groove. The slider plays a limiting role, preventing the threaded block from rotating synchronously with the screw.

[0009] In some embodiments, a locking block is fixedly installed on one side of the movable plate, and a locking groove is formed on the inner wall of the limiting groove.

[0010] With the above solution, after the movable plate is embedded into the limiting groove, the card block is also embedded into the card slot. The card block serves to install the sound insulation cotton, while the card slot allows the sound insulation cotton to better fit the inner wall after being clamped.

[0011] In some embodiments, a threaded rod is symmetrically and movably sleeved on one side of the movable plate, a connecting block is threadedly connected to one side of the threaded rod, a connecting plate is fixedly installed on one side of the connecting block, a groove is opened on one side of the movable plate, and the connecting block is movably sleeved inside the groove.

[0012] The above method embeds the sound insulation cotton into the connection between the card block and the movable plate. By turning the threaded rod, the connecting block moves along the outer wall of the threaded rod, and then the connecting plate moves to limit and clamp the embedded sound insulation cotton, so as to prevent the sound insulation cotton from not being able to fully fit the inner wall during installation. The clamping also prevents the sound insulation cotton from wrinkling during installation.

[0013] In some embodiments, a toothed wheel is fixedly mounted on the outer wall of the threaded rod, and a toothed belt is meshed with the surface of the toothed wheel.

[0014] With the above scheme, after the threaded rod is turned, it drives the toothed wheel to rotate, and the toothed wheel meshes with the toothed belt to rotate. Through the linkage of the toothed belt, the threaded rods on both sides can rotate differently.

[0015] The beneficial effects of this utility model are as follows:

[0016] 1. By turning the shaft, the first bevel gear is driven to rotate, which in turn drives the second bevel gear to rotate, which in turn drives the screws on both sides to rotate, causing the threaded block to move threadedly on the screw surface. The threaded block slides out of the slide groove and then is movably embedded into the through hole, so that the movable plate is fixed in the limiting groove, and the sound insulation cotton is attached to the inner wall. The sound insulation cotton reduces the amplitude and noise, and prevents the sound insulation cotton from being exposed to the outside and covered by dust during long-term use of the ventilation pipe, which would affect the overall sound absorption effect.

[0017] 2. By turning the threaded rod, the connecting block moves along the outer wall of the threaded rod, and then pushes the connecting plate to move, which limits and clamps the embedded sound insulation cotton, preventing the sound insulation cotton from not being able to fully fit the inner wall during installation. The clamping also prevents the sound insulation cotton from wrinkling during installation, and also facilitates disassembly and replacement later, increasing the overall practicality.

[0018] The above description is merely an overview of the technical solutions of the embodiments of this application. In order to better understand the technical means of the embodiments of this application and to implement them in accordance with the contents of the specification, and to make the above and other objects, features and advantages of the embodiments of this application more obvious and understandable, specific implementation methods of this application are described below. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of an industrial local ventilation fan with a noise reduction device in some embodiments of this application.

[0021] Figure 2 This is a schematic diagram of a partial structure of the main body of a local ventilation fan in some embodiments of this application.

[0022] Figure 3 This is a schematic diagram of a partial structure of the active plate in some embodiments of this application.

[0023] Figure 4 This is a schematic diagram of a partial cross-sectional structure of the movable plate in some embodiments of this application.

[0024] Explanation of reference numerals in the attached figures:

[0025] 1. Main body of local ventilation fan; 2. Limiting groove; 3. Through hole; 4. Movable plate; 5. Rotating shaft; 6. First bevel gear; 7. Second bevel gear; 8. Screw; 9. Threaded block; 10. Slider; 11. Slide groove; 12. Sound insulation cotton; 13. Locking block; 14. Locking groove; 15. Threaded rod; 16. Connecting block; 17. Connecting plate; 18. Groove; 19. Toothed wheel; 20. Toothed belt. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0027] The terms "comprising" and "having," and any variations thereof, in the specification, claims, and drawings of this application are intended to cover without excluding other meanings. The words "a" or "an" do not exclude the presence of multiples. Unless otherwise stated, "multiple" means two or more (including two), and similarly, "multiple sets" means two or more (including two sets).

[0028] The directional terms appearing in the following description refer to the directions shown in the figures and are not intended to limit the specific structure of this application. For example, in the description of this application, terms such as "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "inner," "outer," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the figures. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0029] In the description of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly. For example, "connection" or "linkage" in mechanical structures can refer to a physical connection, such as a fixed connection, a detachable connection, or an integral connection. In addition to referring to a physical connection, "connection" or "linkage" in circuit structures can also refer to an electrical connection or a signal connection. For example, it can be a direct connection, i.e., a physical connection, or an indirect connection through at least one intermediate component, as long as the circuit is connected. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0030] To facilitate understanding of the technical solutions in the embodiments of this application, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings.

[0031] This application provides an industrial local ventilation fan with a noise reduction device. For example... Figures 1-4As shown, the device includes a local ventilation fan body 1. A limiting groove 2 is formed on the outer wall of the local ventilation fan body 1. Through holes 3 are symmetrically formed on the inner wall of the limiting groove 2. A movable plate 4 is movably sleeved inside the limiting groove 2. A rotating shaft 5 is symmetrically sleeved on one side of the movable plate 4. A first bevel gear 6 is fixedly installed on one side of the rotating shaft 5. A second bevel gear 7 is meshed with the first bevel gear 6. A screw 8 is fixedly installed on one side of the second bevel gear 7. A threaded block 9 is meshed with the outer wall of the screw 8. Sound insulation cotton 12 is installed on one side of the movable plate 4.

[0032] After the sound insulation cotton 12 is installed on one side of the movable plate 4, the movable plate 4 is then movably embedded into the limiting groove 2. Then, the rotating shaft 5 is turned to drive the first bevel gear 6 to rotate. The first bevel gear 6 meshes with the second bevel gear 7 to rotate, which in turn drives the screws 8 on both sides to rotate, causing the threaded block 9 to move threadedly on the surface of the screw 8. The threaded block 9 slides out of the sliding groove 11 and then movably embeds into the through hole 3, so that the movable plate 4 is fixed in the limiting groove 2, and the sound insulation cotton 12 is attached to the inner wall to reduce the amplitude and noise.

[0033] In the technical solution of this application embodiment, a slider 10 is fixedly installed on the outer wall of the threaded block 9, and the threaded block 9 and the slider 10 are movably sleeved inside the slide groove 11.

[0034] When the threaded block 9 is driven to slide out of the slide groove 11, the slider 10 also slides in the slide groove 11. The slider 10 plays a limiting role, preventing the threaded block 9 from rotating synchronously with the screw 8.

[0035] In the technical solution of this application embodiment, a card block 13 is fixedly installed on one side of the movable plate 4, and a card slot 14 is opened on the inner wall of the limiting groove 2.

[0036] After the movable plate 4 is inserted into the limiting groove 2, the locking block 13 is also inserted into the locking groove 14. The locking block 13 serves to install the sound insulation cotton 12, while the locking groove 14 allows the sound insulation cotton 12 to be better attached to the inner wall after being clamped.

[0037] In the technical solution of this application embodiment, a threaded rod 15 is symmetrically and movably sleeved on one side of the movable plate 4, a connecting block 16 is threadedly connected to one side of the threaded rod 15, a connecting plate 17 is fixedly installed on one side of the connecting block 16, a groove 18 is opened on one side of the movable plate 4, and the connecting block 16 is movably sleeved inside the groove 18.

[0038] The sound insulation cotton 12 is embedded into the connection between the clip 13 and the movable plate 4. By turning the threaded rod 15, the connecting block 16 moves threadedly on the outer wall of the threaded rod 15. Then, the connecting plate 17 is pushed to move, which limits and clamps the embedded sound insulation cotton 12, so as to prevent the sound insulation cotton 12 from not being able to fully fit the inner wall during installation. The clamping also prevents the sound insulation cotton 12 from wrinkling during installation.

[0039] In the technical solution of this application embodiment, a toothed wheel 19 is fixedly installed on the outer wall of the threaded rod 15, and a toothed belt 20 is meshed on the surface of the toothed wheel 19.

[0040] After the threaded rod 15 is turned, it drives the toothed wheel 19 to rotate. The toothed wheel 19 meshes with and drives the toothed belt 20 to rotate. Through the linkage of the toothed belt 20, the threaded rods 15 on both sides can rotate differently.

[0041] Those skilled in the art will understand that although some embodiments herein include certain features included in other embodiments but not others, combinations of features from different embodiments are intended to be within the scope of this application and form different embodiments. For example, in the claims, any of the claimed embodiments can be used in any combination.

[0042] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. An industrial local exhaust ventilator having a sound attenuation device, characterized in that, The device includes a local ventilation fan body (1), with a limiting groove (2) on the outer wall of the local ventilation fan body (1), and through holes (3) symmetrically opened on the inner wall of the limiting groove (2). A movable plate (4) is movably sleeved inside the limiting groove (2), and a rotating shaft (5) is symmetrically sleeved on one side of the movable plate (4). A first bevel gear (6) is fixedly installed on one side of the rotating shaft (5), and a second bevel gear (7) is meshed with the first bevel gear (6). A screw (8) is fixedly installed on one side of the second bevel gear (7), and a threaded block (9) is meshed with the outer wall of the screw (8). Sound insulation cotton (12) is installed on one side of the movable plate (4).

2. A local exhaust ventilator for industrial use having a sound absorbing device according to claim 1, characterized in that, The threaded block (9) has a slider (10) fixedly installed on its outer wall, and the threaded block (9) and slider (10) are movably sleeved inside the groove (11).

3. A local exhaust ventilator for industrial use having a sound absorbing device according to claim 1, wherein A locking block (13) is fixedly installed on one side of the movable plate (4), and a locking groove (14) is provided on the inner wall of the limiting groove (2).

4. A local exhaust ventilator for industrial use having a sound absorbing device according to claim 1, wherein A threaded rod (15) is symmetrically and movably sleeved on one side of the movable plate (4). A connecting block (16) is threadedly connected to one side of the threaded rod (15). A connecting plate (17) is fixedly installed on one side of the connecting block (16). A groove (18) is opened on one side of the movable plate (4). The connecting block (16) is movably sleeved inside the groove (18).

5. An industrial local ventilation fan with a noise reduction device according to claim 4, characterized in that, A toothed wheel (19) is fixedly installed on the outer wall of the threaded rod (15), and a toothed belt (20) is meshed on the surface of the toothed wheel (19).

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