Composite silencer of fan

Abstract

The utility model relates to the technical field of fan composite silencers, and discloses a fan composite silencer which comprises a silencing box, a plurality of silencing plates are installed on the inner wall of the silencing box, a limiting structure is arranged on the surface of the silencing box, the limiting structure comprises a frame, the frame is fixedly connected with the inlet end of the silencing box, and the frame is fixedly connected with the outlet end of the silencing box. The fan composite silencer comprises a frame and a silencing box, the frame is communicated with the silencing box, a plurality of grooves are formed in the surface of the frame, a plurality of threaded rods are rotationally connected to the surface of the frame, the surfaces of the threaded rods are in threaded connection with a driving plate, and two clamping blocks are fixedly connected to the side, close to the frame, of the driving plate. The connecting flange on the fan can be conveniently clamped into the frame on the silencing box to be fixed, so that the problems of stress concentration and sealing failure caused by installation deviation in traditional bolt connection are solved, the flange is ensured to be stably fixed through matching of the clamping blocks and the grooves, meanwhile, vibration transmission is reduced, and the connection reliability is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to fan composite muffler technical field, concretely is a kind of fan composite muffler. BACKGROUND

[0002] Fan composite muffler is a kind of composite noise reduction device for reducing aerodynamic noise (air flow noise) and mechanical noise generated when fan operates, it realizes the efficient control to wideband noise by combining multiple noise elimination principles and structural design, is widely used in fan, air conditioner, industrial exhaust and other systems.

[0003] Fan composite muffler is remarkable in noise reduction, the existing fan composite muffler is fixed using flange cooperation bolt, but in actual application, if improper installation leads to effect decline, bolt connection requires high installation accuracy, if there is slight misalignment between fan outlet and muffler flange, forcibly fastening can lead to local stress concentration, uneven stress can make muffler shell deformation, affect internal acoustic structure performance, sealing failure after long-term operation, for this purpose, a kind of fan composite muffler is provided. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a kind of fan composite muffler to solve the problems raised in the above background.

[0005] To achieve the above object, the utility model provides the following technical scheme: a kind of fan composite muffler, including sound-absorbing box, the inner wall of the sound-absorbing box is equipped with several sound-absorbing plates, the surface of the sound-absorbing box is equipped with limiting structure, the limiting structure includes frame, the inlet end of the frame is fixedly connected with sound-absorbing box, the frame is communicated with sound-absorbing box, the surface of the frame is equipped with several grooves, the surface of the frame is rotatably connected with several threaded rods, the surface of the threaded rod is threadedly connected with driving plate, the side of driving plate close to frame is fixedly connected with two clamping blocks, the size of clamping block is compatible with the size of groove.

[0006] The effect reached by the above components is that: by setting limiting structure, it is fixed to avoid stress concentration and sealing failure caused by installation deviation of traditional bolt connection by being fixed by being inserted into the frame on sound-absorbing box of the connecting flange on fan, the cooperation of clamping block and groove ensures that flange is stably fixed, while reducing vibration transmission, improves connection reliability.

[0007] Preferably, the side of the driving plate is fixedly connected with two extension plates, the surface of the extension plate is slidably penetrated by guide rod, and the surface of the guide rod is fixedly connected with the frame.

[0008] The effect achieved by the above components is that the extension plate moves along the surface of the guide rod, the guide rod limits the movement path of the extension plate, and the driving plate is prevented from rotating during movement.

[0009] Preferably, the threaded rod is fixedly connected with a circular plate at one end away from the frame, and the arc surface of the circular plate is fixedly connected with a plurality of circular rods.

[0010] The effect achieved by the above components is that the rotation of the circular rod drives the rotation of the circular plate, and the rotation of the circular plate drives the rotation of the threaded rod, so that the threaded rod is conveniently rotated.

[0011] Preferably, a plurality of auxiliary plates are fixedly connected to one side of the frame away from the muffler box, and the auxiliary plates are inclined on the surface of the frame.

[0012] The effect achieved by the above components is that after the muffler box falls to a certain position, the auxiliary plates on the surface of the frame will be attached to the flange of the fan air outlet, and because the auxiliary plates are inclined, the direction of the muffler box during the falling process is corrected, so that the flange of the fan can be accurately clamped into the frame.

[0013] Preferably, a sealing gasket is fixedly connected to the inner wall of the frame, and the sealing gasket is made of high-temperature-resistant rubber material.

[0014] The effect achieved by the above components is that the flange will extrude the sealing gasket in the frame, and the sealing gasket will be compressed, thereby further improving the sealing effect of the flange attached to the inner wall of the frame.

[0015] Preferably, a protective cover is sleeved on the surface of the muffler box, and bolts are threadedly connected to both sides of the protective cover.

[0016] The effect achieved by the above components is that the protective cover can conveniently cover the connection between the muffler box and the fan, thereby protecting the components at the connection from physical damage such as collision and scratching, and also preventing rusting and corrosion of the connection due to long-term exposure to the external environment, thereby prolonging the service life of the equipment.

[0017] Preferably, limit holes are formed in both sides of the protective cover, limit rods are inserted into the inner walls of the limit holes, and the limit rods are fixedly connected to the surface of the muffler box.

[0018] The effect achieved by the above components is that the movement of the protective cover will cause the limit rods to slide along the position in the limit holes, and the limit rods limit the movement distance of the protective cover, thereby preventing the protective cover from being separated from the surface of the muffler box.

[0019] Compared with the prior art, the utility model has the advantages that:

[0020] The utility model discloses a limiting structure is set up, reaches the convenient card of flange on fan is fixed in the frame in the muffling box, thereby avoiding the stress concentration and sealing failure problem of traditional bolt connection because of installation deviation, and the cooperation of the clamping block and the recess ensures that the flange is fixed firmly, reduces vibration transmission simultaneously, improves the connection reliability. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is the whole structure schematic drawing of the utility model;

[0022] Figure 2 It is the local structure schematic drawing of the utility model;

[0023] Figure 3 It is the structure schematic drawing of the limiting structure of the utility model;

[0024] Figure 4 It is the structure schematic drawing of the frame of the utility model;

[0025] Figure 5 It is the structure schematic drawing of the drive board of the utility model;

[0026] Figure 6 It is the structure schematic drawing of the protective cover of the utility model.

[0027] In the drawing: 1, muffling box;2, muffling board;3, limiting structure;301, frame;302, recess;303, threaded rod;304, drive board;305, clamping block;306, extension plate;307, guide rod;308, round plate;309, round rod;310, auxiliary plate;311, sealing gasket;312, protective cover;313, bolt;314, limiting hole;315, limiting rod. DETAILED DESCRIPTION

[0028] The technical scheme in the embodiments of the utility model will be described clearly and completely below in combination with the drawings in the embodiments of the utility model, and apparently, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor are within the protection scope of the utility model.

[0029] Please refer to Figures 1-2The utility model provides a technical scheme: a fan composite muffler, including the muffler box 1, the inner wall of muffler box 1 is installed with several sound absorption board 2, the surface of muffler box 1 is equipped with the limit structure 3, and the limit structure 3 includes the frame 301, and the frame 301 is fixedly connected with the import end of muffler box 1, and the frame 301 is connected with muffler box 1, and the surface of frame 301 is equipped with several recesses 302, and the surface of frame 301 is rotatably connected with several threaded rods 303, and the surface of threaded rod 303 is threadedly connected with the drive plate 304, and the drive plate 304 is fixedly connected with two clamping blocks 305 on the side close to frame 301, and the size of clamping block 305 is compatible with the size of recess 302, through setting limit structure 3, reach the frame 301 in the convenient flange of fan on the connection is fixed in muffler box 1, to avoid the stress concentration and sealing failure problem of traditional bolt 313 connection because of installation deviation, and the cooperation of clamping block 305 and recess 302 ensures that the flange is firmly fixed, simultaneously reduces vibration transmission, improves the connection reliability.

[0030] With reference to Figure 3 - Figure 6As shown, in the embodiment: one side of the driving plate 304 is fixedly connected with two extension plates 306, the surface of the extension plate 306 is slidably penetrated by a guide rod 307, the guide rod 307 is fixedly connected with the surface of the frame 301, the extension plate 306 moves to slide along the surface of the guide rod 307, the guide rod 307 limits the movement path of the extension plate 306, thereby avoiding the effect that the driving plate 304 rotates when moving. The end of the threaded rod 303 away from the frame 301 is fixedly connected with a circular plate 308, the arc surface of the circular plate 308 is fixedly connected with a plurality of circular rods 309, the rotation of the circular rod 309 drives the circular plate 308 to rotate, the rotation of the circular plate 308 drives the threaded rod 303 to rotate, and the circular rod 309 facilitates the rotation of the threaded rod 303. A plurality of auxiliary plates 310 are fixedly connected to the side of the frame 301 away from the muffler box 1, the auxiliary plates 310 are inclined on the surface of the frame 301, after the muffler box 1 falls to a certain position, the auxiliary plates 310 on the surface of the frame 301 will be attached to the flange of the fan air outlet, and because the auxiliary plates 310 are inclined, the muffler box 1 will correct the direction during the falling process, so that the flange of the fan can be accurately clamped into the frame 301. The inner wall of the frame 301 is fixedly connected with a sealing gasket 311, the sealing gasket 311 is made of high-temperature-resistant rubber material, the flange will extrude the sealing gasket 311 in the frame 301, and the sealing gasket 311 will be compressed, thereby further improving the sealing effect of the flange attached to the inner wall of the frame 301. The surface of the muffler box 1 is sleeved with a protective cover 312, the two sides of the protective cover 312 are threadedly connected with bolts 313, the protective cover 312 facilitates covering the connection between the muffler box 1 and the fan, thereby protecting the components at the connection from physical damage such as collision and scratching, and also preventing the connection from rusting and corroding due to long-term exposure to the external environment to a certain extent, thereby prolonging the service life of the equipment. The two sides of the protective cover 312 are provided with limiting holes 314, the inner wall of the limiting hole 314 is inserted with a limiting rod 315, the limiting rod 315 is fixedly connected with the surface of the muffler box 1, the movement of the protective cover 312 will make the limiting rod 315 slide along the position in the limiting hole 314, and the limiting rod 315 limits the movement distance of the protective cover 312, thereby avoiding the protective cover 312 from being separated from the surface of the muffler box 1.

[0031] Working principle: when the need to connect the muffler box 1 and the fan outlet, first hoist muffler box 1, muffler box 1 is moved to the fan outlet above, then slowly put down the muffler box 1, muffler box 1 fall to a certain position, the surface of the frame 301 auxiliary plate 310 will be in line with the flange of the fan outlet, because the auxiliary plate 310 is inclined, thus will make the muffler box 1 in the process of falling correction direction, so that the flange of the fan can be accurately clamped into the frame 301, the flange will extrude the sealing gasket 311 in the frame 301, the sealing gasket 311 will be compressed, thereby further improve the sealing effect of the flange and the frame 301 wall paste, then rotate the round bar 309, the round bar 309 will drive the round plate 308 rotation, the round plate 308 rotation will drive the threaded rod 303 rotation, the threaded rod 303 rotation will drive the drive plate 304 movement by means of screw, drive plate 304 movement will drive the block 305 movement, drive plate 304 in the movement will also drive the extension plate 306 movement, the extension plate 306 movement will slide along the surface of the guide rod 307, guide rod 307 to limit the movement path of the extension plate 306, thereby avoid the drive plate 304 in the movement occurs rotation, the block 305 in the movement will gradually insert into the groove 302, when the block 305 moves to a certain position, the block 305 will extrude the flange, so as to extrude the flange fixed in the frame 301, thereby connecting the muffler box 1 and the fan outlet, then rotate the bolt 313, the bolt 313 rotation will move in the protective cover 312 by means of screw thread, when the bolt 313 and muffler box 1 out of contact, press the protective cover 312, the protective cover 312 will slide along the surface of the muffler box 1 towards the fan direction, the protective cover 312 movement will make the limiting rod 315 along the position of the limiting hole 314 sliding, limiting rod 315 to limit the movement distance of the protective cover 312, thereby avoid the protective cover 312 from the surface of the muffler box 1 off, when the protective cover 312 one end paste in the surface of the fan, at this time rotate the bolt 313, make the bolt 313 abuts on the surface of the muffler box 1, thereby fixed the protective cover 312 after movement, the protective cover 312 to facilitate the muffler box 1 and the fan connection place covered, so as to protect the connecting parts from physical damage such as collision, scratching, etc., at the same time, also can prevent the connection due to long-term exposure to the outside environment and appear rusty, corrosion, etc., prolong the service life of the device because of the mistake.

[0032] It is to be noted that, in the present document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0033] While the embodiments of the present application have been illustrated and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and alterations can be made therein without departing from the spirit and scope of the application, which is defined by the appended claims and their equivalents.

Claims

1. A composite silencer for a fan, comprising a silencer box (1), wherein a plurality of silencer plates (2) are installed on the inner wall of the silencer box (1), and a limiting structure (3) is provided on the surface of the silencer box (1), characterized in that: The limiting structure (3) includes a frame (301), which is fixedly connected to the inlet end of the silencer box (1). The frame (301) is connected to the silencer box (1). The surface of the frame (301) is provided with a number of grooves (302). The surface of the frame (301) is rotatably connected with a number of threaded rods (303). The surface of the threaded rods (303) is threadedly connected with a drive plate (304). The drive plate (304) is fixedly connected to two locking blocks (305) on the side near the frame (301). The size of the locking blocks (305) is adapted to the size of the grooves (302).

2. The composite silencer for a fan according to claim 1, characterized in that: Two extension plates (306) are fixedly connected to one side of the drive plate (304). A guide rod (307) slides through the surface of the extension plate (306), and the guide rod (307) is fixedly connected to the surface of the frame (301).

3. The composite silencer for a fan according to claim 1, characterized in that: The threaded rod (303) is fixedly connected to a circular plate (308) at one end away from the frame (301), and a number of circular rods (309) are fixedly connected to the arc surface of the circular plate (308).

4. A composite silencer for a fan according to claim 1, characterized in that: Several auxiliary plates (310) are fixedly connected to the side of the frame (301) away from the silencer box (1), and the auxiliary plates (310) are inclined on the surface of the frame (301).

5. A composite silencer for a fan according to claim 1, characterized in that: A sealing gasket (311) is fixedly connected to the inner wall of the frame (301), and the sealing gasket (311) is made of high temperature resistant rubber.

6. A composite silencer for a fan according to claim 1, characterized in that: The surface of the silencer box (1) is covered with a protective cover (312), and bolts (313) are threaded on both sides of the protective cover (312).

7. A composite silencer for a fan according to claim 6, characterized in that: Limiting holes (314) are provided on both sides of the protective cover (312). A limiting rod (315) is inserted into the inner wall of the limiting hole (314). The limiting rod (315) is fixedly connected to the surface of the silencer box (1).

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