Explosion-proof outer rotor centrifugal fan

Abstract

The utility model discloses an explosion-proof outer rotor centrifugal fan which comprises a fan body, an air inlet and an air outlet are formed in the fan body, a guide structure is arranged at the position, located at the air outlet, of the fan body, the guide structure comprises a middle cover, an installation pipe and an installation cover, the middle cover is connected with the fan body through bolts, and the installation pipe is connected with the installation cover through bolts. The air supply direction is changed through the guide structure; an anti-explosion structure is arranged at the position, located at the air inlet, of the fan body and comprises a plurality of protection plates, a plurality of baffle plates and a plurality of sleeves, the sleeves are fixedly arranged on the fan body, extension pieces are arranged on the protection plates and fixedly connected with the protection plates, and the baffle plates are fixedly connected with the extension pieces. And the centrifugal fan is prevented from being damaged through the anti-explosion structure.

Description

TECHNICAL FIELD

[0001] The utility model relates to centrifugal fan field, more specifically, it relates to a kind of explosion-proof outer rotor centrifugal fan. BACKGROUND

[0002] Centrifugal fan is very common in industrial production, by centrifugal fan can be realized in industrial production for the required equipment air supply etc. Operation, thereby greatly facilitate the performance of industrial production, outer rotor centrifugal fan is a kind of centrifugal fan, in the use process of outer rotor centrifugal fan, since air outlet position is fixed, therefore, in the use process, air supply direction cannot be changed, thus it is inconvenient to change the discharge position of wind in centrifugal fan according to the actual demand of industrial production, thereby other pipe structure needs to be connected with centrifugal fan, it is inconvenient to install centrifugal fan, and the existing centrifugal fan lacks explosion-proof structure, since the air inlet position of the casing of outer rotor centrifugal fan is exposed, in the process of high-speed rotation of centrifugal fan impeller, stone etc. SUMMARY

[0003] (I) technical problem solved

[0004] In view of the problems in the prior art, the utility model provides an explosion-proof outer rotor centrifugal fan to solve the technical problems mentioned in the background art.

[0005] (II) technical scheme

[0006] To achieve the above object, the utility model provides the following technical scheme: an explosion-proof outer rotor centrifugal fan, including fan body, the fan body is equipped with air inlet and air outlet, the fan body is located at the position of air outlet and is provided with guide structure, the guide structure includes intermediate cover, installation pipe and installation cover, the intermediate cover is connected between bolt connection with fan body, and the air supply direction is changed by guide structure;

[0007] The fan body is located at the position of air inlet and is provided with explosion-proof structure, the explosion-proof structure includes protection plate, baffle and sleeve, the protection plate and sleeve are all provided with multiple, the sleeve is fixedly arranged on the fan body, the protection plate is provided with extension piece, the extension piece is fixedly connected between protection plate, and the damage of centrifugal fan is placed by explosion-proof structure.

[0008] The utility model is further provided with, the intermediate cover, installation cover and installation pipe are all fixedly provided with first installation piece, the first installation piece is provided with multiple, the first installation piece is equipped with mounting hole, the mounting hole is provided with screw thread, so that the intermediate cover is connected between installation pipe and installation cover by the cooperation of mounting hole and bolt.

[0009] The utility model further sets up, fixedly set up sealing block on the intermediate cover and installation pipe, the both ends of installation pipe are all set up sealing groove, sealing groove and sealing block mutually cooperate, set up exhaust port on installation pipe, exhaust port sets up a plurality of, thereby through sealing block and sealing groove seal the connecting gap.

[0010] The utility model further sets up, the outside fixed prolongs the pipe of exhaust port on installation pipe, the inside fixed prolongs the rack of setting up of exhaust port of installation pipe, detachably set up the wind deflector on prolongs the rack, set up through hole on installation cover, thereby convenient through the wind deflector to the shading of exhaust port.

[0011] The utility model further sets up, set up installation groove with the wind deflector cooperation on prolongs the rack, one end fixedly set up fixed plate of wind deflector, set up the lack groove around the through hole of setting up on installation cover, the lack groove and fixed plate mutually cooperate, set up fixed hole on installation cover and fixed plate, thereby convenient to install the shading board in the inside of installation pipe.

[0012] The utility model further sets up, the sleeve is hollow, set up ventilation hole on protection board and shading board, ventilation hole sets up a plurality of, fixedly set up installation rod on prolongs the piece, installation rod and sleeve mutually cooperate, thereby convenient to install protection board.

[0013] The utility model further sets up, set up first connecting hole on prolongs the piece and sleeve, set up screw threads in first connecting hole, the first connecting hole of setting up on prolongs the piece and the first connecting hole of setting up on sleeve are connected with bolt, thereby convenient to install protection board on fan body.

[0014] The utility model further sets up, set up cooperation groove on protection board, fixedly set up cooperation piece on shading board, cooperation groove and cooperation piece mutually cooperate, set up second connecting hole on protection board in cooperation groove and on cooperation piece, set up screw threads in second connecting hole, thereby convenient to install shading board.

[0015] (Three) beneficial effect

[0016] Compared with the prior art, the utility model provides a kind of explosion-proof outer rotor centrifugal fan, with following beneficial effects:

[0017] 1. The utility model discloses a guide structure is set up, when needing to send air to different directions, the different extension pipe of installing pipe is set up with the pipeline of required air supply connection, finds the baffle of installing on the extension frame of air supply required extension pipe corresponding, removes the bolt in the fixed hole of setting up on the fixed plate and installation cover, extracts the baffle through the through -hole of setting up on the installation cover, makes the baffle no longer covers the corresponding air outlet, thereby facilitate changing the air exhaust direction of whole centrifugal fan, improve the applicability of whole centrifugal fan.

[0018] 2. The utility model discloses a protection plate is installed with the air inlet inside fan body through the cooperation of installing rod and sleeve pipe, and the protection plate is fixed on the fan body, thereby protecting the impeller in centrifugal fan through the protection plate, and the shielding plate is installed on the protection plate through the cooperation of cooperation groove and cooperation piece, thereby preventing the damage of large particle material in external environment to the impeller in fan through the shielding plate.

[0019] 3. The utility model discloses a protection plate and shielding plate can prevent the impeller fragment from flying out of the fan outside after the impeller breaks down through the shielding of protection plate and shielding plate, thereby facilitating the protection of fan body, and also can protect the environment around fan after the damage of fan, thereby improving the use safety of whole centrifugal fan. ACCURACY OF DRAWINGS

[0020] Figure 1 It is a kind of explosion-proof outer rotor centrifugal fan's overall structure schematic diagram;

[0021] Figure 2 It is a kind of explosion-proof outer rotor centrifugal fan's fan body, guide structure and the cooperation structure schematic diagram of explosion-proof structure;

[0022] Figure 3 It is a kind of explosion-proof outer rotor centrifugal fan's explosion-proof structure's structure schematic diagram;

[0023] Figure 4 It is a kind of explosion-proof outer rotor centrifugal fan's guide structure's cooperation structure schematic diagram;

[0024] Figure 5 It is a kind of explosion-proof outer rotor centrifugal fan installing pipe's structure schematic diagram.

[0025] In the figure: 1, fan body; 2, air inlet; 3, air outlet; 4, intermediate cover; 5, mounting pipe; 6, mounting cover; 7, protection plate; 8, baffle; 9, sleeve; 10, extension piece; 11, first mounting piece; 12, mounting hole; 13, sealing block; 14, sealing groove; 15, air outlet; 16, extension pipe; 17, extension frame; 18, wind deflector; 19, through hole; 20, mounting groove; 21, fixed plate; 22, missing groove; 23, fixing hole; 24, vent; 25, mounting rod; 26, first connecting hole; 27, matching groove; 28, matching piece; 29, second connecting hole. DETAILED DESCRIPTION

[0026] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The present application will be described in detail below with reference to the drawings and in combination with the embodiments.

[0027] It should be noted that, unless otherwise specified, all technical and scientific terms used in the present application have the same meaning as generally understood by those skilled in the art to which the present application belongs.

[0028] In the present application, unless otherwise stated, the directions used such as "up, down" are generally with respect to the directions shown in the drawings, or with respect to the vertical, perpendicular or gravity direction; similarly, for the convenience of understanding and description, "left, right" is generally with respect to the left and right shown in the drawings; "inner, outer" refers to the inner and outer with respect to the contour of each component itself, but the above directional words are not used to limit the present application.

[0029] Please refer to Figures 1-5 An explosion-proof outer rotor centrifugal fan, comprising a fan body 1, an air inlet 2 and an air outlet 3 are formed on the fan body 1, a guide structure is arranged on the fan body 1 at the position of the air outlet 3, the guide structure comprises an intermediate cover 4, a mounting pipe 5 and a mounting cover 6, the intermediate cover 4 is bolted with the fan body 1;

[0030] An explosion-proof structure is arranged on the fan body 1 at the position of the air inlet 2, the explosion-proof structure comprises a protection plate 7, a baffle 8 and a sleeve 9, the protection plate 7 and the sleeve 9 are both provided with a plurality of sleeves, the sleeve 9 is fixedly arranged on the fan body 1, the protection plate 7 is provided with an extension piece 10, and the extension piece 10 is fixedly connected with the protection plate 7.

[0031] In the present embodiment, the fan body 1, the explosion-proof structure and the guide structure are matched to form the main structure of the entire centrifugal fan, and the guide structure changes the air supply direction.

[0032] More specifically, the explosion-proof structure prevents the centrifugal fan from being damaged or causing damage to the external environment.

[0033] Please refer to Figures 1-5 , as a kind of implementation of the air supply direction changes: middle cover 4, installation cover 6 and installation pipe 5 are all fixed with first installation piece 11, first installation piece 11 is provided with multiple, first installation piece 11 is provided with installation hole 12, installation hole 12 is provided with thread, middle cover 4 and installation pipe 5 are all fixed with sealing block 13, both ends of installation pipe 5 are provided with sealing groove 14, sealing groove 14 and sealing block 13 are matched with each other, installation pipe 5 is provided with exhaust port 15, exhaust port 15 is provided with multiple, extension pipe 16 is fixed on the outer side of installation pipe 5 located exhaust port 15, extension rack 17 is fixedly arranged in the inside of installation pipe 5 located exhaust port 15, extension rack 17 is detachably provided with wind baffle 18, through hole 19 is formed in installation cover 6, mounting groove 20 is formed in extension rack 17 matched with wind baffle 18, one end of wind baffle 18 is fixedly provided with fixed plate 21, lack slot 22 is formed around through hole 19 in installation cover 6, lack slot 22 and fixed plate 21 are matched with each other, fixed hole 23 is formed in installation cover 6 and fixed plate 21;

[0034] Specifically, when air supply is needed in different directions, different extension pipes 16 provided on installation pipe 5 are connected with the required air supply pipeline, the wind baffle 18 installed on the extension rack 17 corresponding to the required extension pipe 16 for air supply is found, the bolts in the fixed holes 23 provided on the fixed plate 21 and the installation cover 6 are removed, the wind baffle 18 is pulled out through the through hole 19 formed in the installation cover 6, so that the wind baffle 18 no longer blocks the corresponding exhaust port 15, thereby facilitating the change of the exhaust direction of the entire centrifugal fan.

[0035] Please refer to Figures 1-5 , as a kind of implementation of the explosion-proof: sleeve 9 is hollow, ventilation hole 24 is formed in protection plate 7 and shielding plate 8, ventilation hole 24 is provided with multiple, installation rod 25 is fixedly arranged on extension piece 10, installation rod 25 and sleeve 9 are matched with each other, first connecting hole 26 is formed in extension piece 10 and sleeve 9, thread is arranged in first connecting hole 26, first connecting hole 26 arranged on extension piece 10 and first connecting hole 26 arranged on sleeve 9 are connected by bolts, cooperation slot 27 is formed in protection plate 7, cooperation piece 28 is fixedly arranged on shielding plate 8, cooperation slot 27 and cooperation piece 28 are matched with each other, second connecting hole 29 is formed in protection plate 7 located cooperation slot 27 and cooperation piece 28, thread is arranged in second connecting hole 29;

[0036] Specifically, when protecting the fan body 1, the protection plate 7 is installed inside the air inlet 2 of the fan body 1, and the protection plate 7 is fixed on the fan body 1 through the cooperation of the mounting rod 25 and the sleeve 9, so that the impeller in the centrifugal fan is protected by the protection plate 7, and the shielding plate 8 is installed on the protection plate 7 through the cooperation of the cooperation groove 27 and the cooperation piece 28, so that the damage of large particle substances in the external environment to the impeller in the fan is prevented by the shielding plate 8. After the impeller is broken, the fragments of the impeller can also be prevented from flying out of the fan outside through the shielding of the protection plate 7 and the shielding plate 8, so that the fan body 1 is protected, and the environment around the fan is also protected after the fan is damaged.

[0037] In summary, the whole is used:

[0038] When air is needed to be sent to different directions, the different extension pipes 16 provided on the installation pipe 5 are connected with the pipelines required for air sending, the air baffle 18 installed on the extension frame 17 corresponding to the required extension pipe 16 for air sending is found, the bolts in the fixing holes 23 provided on the fixing plate 21 and the installation cover 6 are removed, the air baffle 18 is pulled out through the through hole 19 provided on the installation cover 6, so that the air baffle 18 no longer shields the corresponding air outlet 15, so that the air outlet direction of the whole centrifugal fan is changed.

[0039] When protecting the fan body 1, the protection plate 7 is installed inside the air inlet 2 of the fan body 1, and the protection plate 7 is fixed on the fan body 1 through the cooperation of the mounting rod 25 and the sleeve 9, so that the impeller in the centrifugal fan is protected by the protection plate 7, and the shielding plate 8 is installed on the protection plate 7 through the cooperation of the cooperation groove 27 and the cooperation piece 28, so that the damage of large particle substances in the external environment to the impeller in the fan is prevented by the shielding plate 8. After the impeller is broken, the fragments of the impeller can also be prevented from flying out of the fan outside through the shielding of the protection plate 7 and the shielding plate 8, so that the fan body 1 is protected, and the environment around the fan is also protected after the fan is damaged.

[0040] In all the schemes mentioned above, the connection between the two components can be selected according to the actual situation, such as welding, bolt and nut cooperation connection, bolt or screw connection or other known connection mode, which will not be described here. In the above, when the fixed connection is involved, welding is preferred. Although the embodiments of the utility model have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and modifications can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. An explosion-proof, outer-rotor centrifugal fan comprising a fan body (1), characterized in that: The fan body (1) is provided with an air inlet (2) and an air outlet (3), and a guide structure is arranged on the fan body (1) at the position of the air outlet (3), the guide structure comprises an intermediate cover (4), a mounting pipe (5) and a mounting cover (6), and the intermediate cover (4) is bolted with the fan body (1); An explosion-proof structure is arranged on the fan body (1) at the position of the air inlet (2), the explosion-proof structure comprises a protection plate (7), a shielding plate (8) and a sleeve (9), a plurality of protection plates (7) and sleeves (9) are arranged, the sleeve (9) is fixedly arranged on the fan body (1), the protection plate (7) is provided with an extension piece (10), and the extension piece (10) is fixedly connected with the protection plate (7).

2. The explosion-proof outer rotor centrifugal fan according to claim 1, characterized in that: First mounting pieces (11) are fixedly arranged on the intermediate cover (4), the mounting cover (6) and the mounting pipe (5), a plurality of first mounting pieces (11) are arranged, mounting holes (12) are formed in the first mounting pieces (11), and threads are arranged in the mounting holes (12).

3. The explosion-proof outer rotor centrifugal fan according to claim 2, characterized in that: Sealing blocks (13) are fixedly arranged on the intermediate cover (4) and the mounting pipe (5), sealing grooves (14) are formed at both ends of the mounting pipe (5), the sealing grooves (14) and the sealing blocks (13) are matched with each other, air outlets (15) are formed in the mounting pipe (5), and a plurality of air outlets (15) are formed.

4. The explosion-proof outer rotor centrifugal fan according to claim 3, characterized in that: An extension pipe (16) is fixedly arranged outside the air outlet (15) of the mounting pipe (5), an extension frame (17) is fixedly arranged in the mounting pipe (5) at the position of the air outlet (15), a wind baffle (18) is detachably arranged on the extension frame (17), and a through hole (19) is formed in the mounting cover (6).

5. A flameproof external rotor centrifugal fan according to claim 4, characterized in that: An installation groove (20) matched with the wind baffle (18) is formed in the extension frame (17), a fixed plate (21) is fixedly arranged at one end of the wind baffle (18), a missing groove (22) is arranged around the through hole (19) of the mounting cover (6), the missing groove (22) and the fixed plate (21) are matched with each other, and fixed holes (23) are formed in the mounting cover (6) and the fixed plate (21).

6. The explosion-proof outer rotor centrifugal fan according to claim 1, characterized in that: The sleeve (9) is hollow, ventilation holes (24) are formed in the protection plate (7) and the shielding plate (8), a plurality of ventilation holes (24) are formed, a mounting rod (25) is fixedly arranged on the extension piece (10), and the mounting rod (25) and the sleeve (9) are matched with each other.

7. A flameproof external rotor centrifugal fan according to claim 6, characterized in that: First connecting holes (26) are formed in the extension piece (10) and the sleeve (9), threads are arranged in the first connecting holes (26), and the first connecting holes (26) arranged on the extension piece (10) are bolted with the first connecting holes (26) arranged on the sleeve (9).

8. The explosion-proof outer rotor centrifugal fan according to claim 6, characterized in that: The protection plate (7) is provided with a matching groove (27), the shielding plate (8) is fixedly provided with a matching piece (28), the matching groove (27) and the matching piece (28) are matched with each other, the protection plate (7) is provided with a second connecting hole (29) in the matching groove (27) and on the matching piece (28), and the second connecting hole (29) is provided with a thread.

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