CN219549197U - Axial flow exhaust fan - Google Patents

Abstract

The utility model discloses an axial flow exhaust fan, which belongs to the technical field of pipeline exhaust, and comprises a shell, wherein the shell is provided with a motor, and one end of the motor is provided with an impeller; the impeller and the motor are connected through an adapter; the inner thread surface 1 and the thread surface 2 with opposite thread directions are arranged in the adapter, the shell is provided with a rain cover at one end far away from the impeller and the motor, the rain cover comprises a rain layer and an anti-seepage layer, the rain layer is arranged on the outer side of the anti-seepage layer, a plurality of holes are formed in the rain layer, a plurality of rain covers are arranged in the holes, the anti-seepage layer is of a frame structure, and a sealing ring is arranged on the connecting surface of the anti-seepage layer and the rain layer. After the application, the motor or the impeller of the exhaust fan needs to be replaced only by detaching the adapter, the impeller is connected with the motor more tightly when the adapter can rotate, the exhaust effect is ensured, and the rain-proof cover cannot enter the exhaust fan even if most of inclined rain is arranged at the outer part of the exhaust fan, so that the protection of the exhaust fan is integrally improved.

Description

Axial flow exhaust fan

Technical Field

The utility model relates to the technical field of pipeline exhaust, in particular to an axial flow exhaust fan.

Background

The axial flow type exhaust fan has the greatest advantages of corrosion resistance and acid and alkali resistance, and belongs to one of the anti-corrosion fans. It is this corrosion-resistant property that is utilized in many fields, such as office buildings, shops, theatres, hospitals, factory workshops, basements, etc., and is particularly advantageous when installed in places where corrosion protection is desired.

When the axial-flow exhaust fan is used for a long time, the motor is damaged or the impeller is seriously damaged due to the direct connection operation of the motor and the impeller, the motor impeller is required to be replaced simultaneously during replacement, unnecessary waste is caused, the axial-flow exhaust fan is damaged due to the fact that certain rainwater enters the exhaust fan when the axial-flow exhaust fan is placed in a eave for use, the exhaust effect is affected, and the axial-flow exhaust fan which is not directly connected with the impeller, can be in tight connection operation and is good in rainproof effect is required to face the situation.

Chinese patent No.: CN200820161937.7 discloses a curve axial flow exhaust fan. The exhaust fan comprises a cylindrical body, wherein the body is provided with a channel penetrating through two ends of the body, a motor is fixed in the channel of the body, and an impeller capable of rotating along with the rotating shaft is arranged on the rotating shaft of the motor. The axial flow exhaust fan is the most commonly used axial flow exhaust fan in the present life, is common at office building roof, kitchen air exit etc. and adopts crooked passageway, can effectively prevent that gaseous backward flow from taking place now, and is effectual of airing exhaust, but this exhaust fan still exists in the in-service use because the direct connection of motor and impeller rotates, and long-term use probably has the condition that the motor damages or the impeller is impaired needs to be changed, and the exhaust fan is very easily received the rainwater invasion and is led to the fact the damage to equipment when setting up the position and the position of air exit too near, consequently the axial flow exhaust fan that can make the improvement to above-mentioned two problems is urgently needed.

Disclosure of Invention

The utility model aims to overcome the problems in the prior art and provide the axial flow exhaust fan with the motor impeller capable of being split-assembled and good in rainproof effect.

In order to achieve the above purpose, the technical scheme adopted is as follows: an axial flow exhaust fan comprises a shell, wherein a motor is arranged in the shell, and one end of the motor is provided with an impeller; the connecting ends of the impeller and the motor are screw rods, and the impeller is connected with the motor through an adapter; the adapter is internally provided with a thread surface 1 and a thread surface 2, the thread surface 1 is connected with a motor, the thread surface 2 is connected with an impeller, the thread directions of the thread surface 1 and the thread surface 2 are opposite, a blocking layer is arranged between the thread surface 1 and the thread surface 2, and friction-resistant layers are arranged on the inner walls of the thread surface 1 and the thread surface 2; the one end that impeller and motor were kept away from to the casing is equipped with rain-proof lid, rain-proof lid includes rain-proof layer and prevention of seepage permeation layer, the prevention of seepage permeation layer outside is located to the rain-proof layer, be equipped with a plurality of trompils on the prevention of seepage permeation layer, be equipped with a plurality of rain-proof covers on the trompil, prevention of seepage permeation layer is the framework structure, prevention of seepage permeation layer is equipped with the sealing washer with the junction surface of prevention of seepage permeation layer.

Further, the screw threads of the screw rod at the connecting end of the motor and the impeller are in opposite directions, and the motor is installed in the shell through the installation frame.

Furthermore, the rain cover is connected with the shell through screws.

Further, the number of the openings is 12-20, and the blades on the impeller are made of polyester resin or carbon fiber.

Further, the anti-seepage layer is connected with the rain-proof layer through screws, the cover plate of the rain-proof cover is arc-shaped, and the holes in the rain-proof layer are of an elliptic structure or a rectangular structure.

Further, rubber pads are arranged on two sides of the barrier layer of the adapter.

The beneficial effects of adopting above-mentioned scheme are: the axial flow exhaust fan comprises a shell, wherein a motor is arranged in the shell, and one end of the motor is provided with an impeller; the connecting ends of the impeller and the motor are screw rods, and the impeller is connected with the motor through an adapter; the adapter is internally provided with a thread surface 1 and a thread surface 2, the thread surface 1 is connected with a motor, the thread surface 2 is connected with an impeller, the thread directions of the thread surface 1 and the thread surface 2 are opposite, a blocking layer is arranged between the thread surface 1 and the thread surface 2, and friction-resistant layers are arranged on the inner walls of the thread surface 1 and the thread surface 2; the one end that impeller and motor were kept away from to the casing is equipped with rain-proof lid, rain-proof lid includes rain-proof layer and prevention of seepage permeation layer, the prevention of seepage permeation layer outside is located to the rain-proof layer, be equipped with a plurality of trompils on the prevention of seepage permeation layer, be equipped with a plurality of rain-proof covers on the trompil, prevention of seepage permeation layer is the framework structure, prevention of seepage permeation layer is equipped with the sealing washer with the junction surface of prevention of seepage permeation layer. After the application, the motor needs to be replaced or the impeller only needs to be detached from the adapter for replacement, the impeller and the motor are connected in a tighter manner when the motor rotates due to the internal threads of the adapter in the opposite directions, so that the exhaust effect is ensured, and the rain-proof cover is applied to prevent most of inclined rain from entering the exhaust fan even if the outside of the exhaust fan is inclined, so that the rain-proof protection of the exhaust fan is integrally improved.

Drawings

Fig. 1 is a schematic structural view of an axial flow exhaust fan according to the present utility model.

FIG. 2 is a schematic view of the rain cover structure of the axial flow fan of the present utility model.

FIG. 3 is a schematic view of the structure of the rain cover of the axial flow fan.

FIG. 4 is a schematic view of the internal structure of the adaptor of the axial flow fan of the present utility model.

In the figure, 1, an impeller; 2. a motor; 3. a thread surface 1; 4. a housing; 6. an permeation prevention layer; 7. a rain-proof layer; 8. a rain cover; 10. opening holes; 11. a seal ring; 12. a barrier layer; 13. a rubber pad; 14. a thread surface 2; 16. and (5) an adapter connector.

Description of the embodiments

The technical scheme of the present utility model will be clearly and completely described in the following in connection with the specific embodiments of the present utility model. The described embodiments are only some, but not all, embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Examples

As shown in fig. 1-4, the axial flow exhaust fan comprises a shell 4, wherein a motor 2 is arranged in the shell 4, and an impeller 1 is arranged at one end of the motor 2; the connection ends of the impeller 1 and the motor 2 are screw rods, and the impeller 1 and the motor 2 are connected through an adapter joint 16; the adapter joint 16 is internally provided with a thread surface 13 and a thread surface 214, the thread surface 13 is connected with the motor 2, the thread surface 214 is connected with the impeller 1, the thread directions of the thread surface 13 and the thread surface 214 are opposite, a blocking layer 12 is arranged between the thread surface 13 and the thread surface 214, and friction-resistant layers are arranged on the inner walls of the thread surface 13 and the thread surface 214; the one end that impeller 1 and motor 2 were kept away from to casing 4 is equipped with the rain-proof lid, the rain-proof lid includes rain-proof layer 7 and prevention of seepage permeation layer 6, the prevention of seepage permeation layer 6 outside is located to rain-proof layer 7, be equipped with a plurality of trompils 10 on the prevention of seepage permeation layer 7, be equipped with a plurality of rain-proof covers 8 on the trompil 10, prevention of seepage permeation layer 6 is the framework structure, the joint face of prevention of seepage permeation layer 6 and prevention of seepage permeation layer 7 is equipped with sealing washer 11.

After the application, only need pull down adapter 16 can change when the exhaust fan needs to change motor 2 or impeller 1 needs to change one of them, the internal thread that adapter 16 is for the opposite direction can let impeller 1 and motor 2 be connected when motor 2 rotates and closely guarantee the effect of airing exhaust more, and the application of rain-proof cover 8 is when using, and rain-proof layer 7 can block the rainwater, and permeation prevention layer 6 can make the rain-proof effect of rain-proof layer 7 improve, avoids the rainwater to permeate into in the casing 4 from the top, wholly guarantees in the exhaust fan can not enter into even the rain of the outside most slope of exhaust fan, wholly improves the rain-proof effect to the exhaust fan.

Examples

As shown in fig. 1-4, the screw threads of the screw rod at the connecting end of the motor 2 and the impeller 1 are in opposite directions, and the motor 2 is installed in the shell 4 by a mounting frame.

The rain cover 8 is connected with the shell 4 through screws.

The number of the holes 10 is 12-20, and the blades on the impeller 1 are made of polyester resin or carbon fiber. The application can make the resistance of the exhaust fan lighter and improve the exhaust effect.

The anti-seepage layer 6 is connected with the rain-proof layer 7 through screws, the cover plate of the rain-proof cover 8 is arc-shaped, and the opening 10 on the rain-proof layer 7 is of an elliptic structure or a rectangular structure. The application can lead the exhaust fan to have better rainproof effect.

Rubber pads 13 are arranged on two sides of the barrier layer 12 of the adapter 16. The application can reduce the friction force at the top end of the screw rod when the motor 2 and the impeller 1 rotate, and prolong the service lives of the screw rods of the impeller 1 and the motor 2.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.

Claims (6)

1. An axial flow exhaust fan comprises a shell (4) and is characterized in that: a motor (2) is arranged in the shell (4), and an impeller (1) is arranged at one end of the motor (2); the connecting ends of the impeller (1) and the motor (2) are screw rods, and the impeller (1) is connected with the motor (2) through an adapter joint (16);

a thread surface 1 (3) and a thread surface 2 (14) are arranged in the adapter joint (16), the thread surface 1 (3) is connected with a motor (2), the thread surface 2 (14) is connected with an impeller (1), the thread directions of the thread surface 1 (3) and the thread surface 2 (14) are opposite, a blocking layer (12) is arranged between the thread surface 1 (3) and the thread surface 2 (14), and a friction-resistant layer is arranged on the inner walls of the thread surface 1 (3) and the thread surface 2 (14);

the waterproof cover is characterized in that the shell (4) is arranged at one end, far away from the impeller (1) and the motor (2), of the shell and comprises a waterproof layer (7) and an impermeable layer (6), the impermeable layer (7) is arranged on the outer side of the impermeable layer (6), a plurality of holes (10) are formed in the waterproof layer (7), a plurality of waterproof covers (8) are arranged on the holes (10), the impermeable layer (6) is of a frame structure, and a sealing ring (11) is arranged on the connecting surface of the impermeable layer (6) and the impermeable layer (7).

2. The axial flow exhaust fan according to claim 1, characterized in that: the screw threads of the screw rod at the connecting end of the motor (2) and the impeller (1) are in opposite directions, and the motor (2) is installed in the shell (4) through the installation frame.

3. The axial flow exhaust fan according to claim 1, characterized in that: the rain cover (8) is connected with the shell (4) through screws.

4. The axial flow exhaust fan according to claim 1, characterized in that: the number of the holes (10) is 12-20, and the blades on the impeller (1) are made of polyester resin or carbon fiber.

5. The axial flow exhaust fan according to claim 1, characterized in that: the anti-seepage layer (6) is connected with the rain-proof layer (7) through screws, the cover plate of the rain-proof cover (8) is arc-shaped, and the opening (10) on the rain-proof layer (7) is of an elliptic structure or a rectangular structure.

6. The axial flow exhaust fan according to claim 1, characterized in that: rubber pads (13) are arranged on two sides of the connecting joint (16) barrier layer (12).