Box type exhaust fan with noise reduction function

Abstract

The utility model relates to the technical field of exhaust fans, in particular to a box type exhaust fan with a noise reduction function, which comprises a protective shell, a first sound absorption layer arranged on the inner wall of the protective shell, a fan body arranged inside the protective shell, a driving motor mounted on the right side of the fan body, and a fan impeller connected with an output shaft of the driving motor. The output end of the fan body is connected with an air outlet, a second sound absorption layer is arranged on the inner wall of the air outlet, a limiting air cylinder is installed on the upper surface of the protective shell, the output end of the limiting air cylinder is connected with a limiting plate, and four hoisting rings are symmetrically arranged at the upper end of the protective shell. The fan impeller can be driven to rotate through the driving motor arranged on the fan body, so that air blowing and heat dissipation operation is conducted on external equipment, the noise reduction effect can be achieved through the first sound absorption layer arranged in the protection shell, the noise reduction effect can be further improved under the cooperation of the second sound absorption layer, and practicability is high.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of exhaust fan, concretely to a box type exhaust fan with noise reduction function. BACKGROUND

[0002] Fan is the habit of our country to gas compression and gas conveying machinery, the fan usually said includes ventilator, air blower, wind turbine, fan is by input mechanical energy, improve gas pressure and send gas, it is a driven fluid machinery, it is well known that in the power system in many occasions such as transformer room of substation, for realizing air flow in the main transformer room, reducing the air temperature of main transformer room and the noise of main transformer room exhaust, in the main transformer room mostly set up exhaust fan, use exhaust fan to blow the main transformer.

[0003] Such as the utility model discloses a box type exhaust fan, the utility model discloses a box type exhaust fan, including main box, the main box is installed on a base, the four corners of the base bottom all are installed with universal wheel, the main box is provided with fan body, the fan body includes casing and impeller, the impeller is fixed in the casing, the impeller is connected with motor through the pivot, the casing one side is provided with air inlet, and the other side is provided with air outlet, the air inlet and the air outlet protrude the main box, the air inlet is provided with silencer ring, the air outlet is connected with silencer pipe, the inner wall of the casing is provided with first sound absorbing layer, it is combined use through silencer ring, first sound absorbing layer and silencer pipe and other multiple sound absorbing structures, realizes multiple sound absorbing and noise reduction, makes noise greatly reduce, reduces noise pollution.

[0004] In summary, it can be known that the prior art has the following technical problems: the existing box type exhaust fan will produce airflow noise during operation, if the noise is not eliminated, the airflow noise will affect the health and normal life of nearby residents, therefore, we provide a box type exhaust fan with noise reduction function. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a box type exhaust fan with noise reduction function to solve the problems in the above background technology.

[0006] In order to solve the above technical problems, the utility model adopts the following technical scheme:

[0007] The utility model provides a box type exhaust fan with noise reduction function, including the protective shell, the inner wall of protective shell is provided with first sound absorption layer, the inside of protective shell is provided with fan body, the right side of fan body is installed with drive motor, the output shaft of drive motor is connected with fan impeller, the output end of fan body is connected with air outlet, the inner wall of air outlet is provided with second sound absorption layer, the upper surface of protective shell is installed with limit cylinder, the output end of limit cylinder is connected with limit board, the upper end of protective shell is provided with four lifting rings.

[0008] Preferably, the first sound absorption layer is fixedly connected with the protective shell, the drive motor is boltedly connected with the fan body, and the fan impeller and the drive motor form a rotating structure.

[0009] Preferably, the air outlet and the fan body are in communication with each other, the limit cylinder is fixedly connected with the protective shell, and the limit board and the limit cylinder form an extension structure.

[0010] Preferably, the protective shell further comprises:

[0011] A protective door is hingedly connected to the right side of the protective shell, the outer wall of the protective shell is symmetrically provided with four fixing blocks, and the four fixing blocks are internally provided with fixing bolts.

[0012] Preferably, the fixing block and the protective shell are integrally fixed, and the fixing bolt penetrates into the interior of the fixing block.

[0013] Preferably, the fan body further comprises:

[0014] A connecting pipe is arranged on the left side of the fan body, the left side of the connecting pipe is connected with an air inlet, the air inlet is internally provided with a filter screen, and the outer wall of the air inlet is provided with a connecting bolt.

[0015] Preferably, the air inlet and the fan body form a communication structure through the connecting pipe, and the filter screen and the air inlet are detachably connected.

[0016] The above description shows that the above technical solutions of the utility model can certainly solve the technical problems to be solved by the utility model.

[0017] Meanwhile, through the above technical solutions, the utility model has at least the following beneficial effects:

[0018] The utility model discloses a drive motor is set up on the fan body, can drive the rotation of fan impeller to the external equipment is carried out blowing heat dissipation operation, and through the first sound absorption layer that sets up in the protection shell, can play the role of noise reduction, under the cooperation of second sound absorption layer, can further improve the noise reduction effect, and the practicality is strong, through the spacing cylinder that sets up on the protection shell, can drive the vertical motion of spacing plate, makes spacing plate clamps the fan body and limits, avoids the displacement of fan body, improves stability,

[0019] The utility model discloses a fixed block is set up on the protection shell, under the cooperation of fixed bolt, convenient to the device is fixed and is settled, and through the protection door that sets up, convenient to the maintenance of internal fan body, through the filter screen board that sets up in the air inlet, can filter the air of drawing in operation, can effectively reduce the impurity of outside and enter the fan body, improve practicality, and the connecting bolt is screwed down, can dismantle the air inlet, convenient to the replacement of filter screen board. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is the three-dimensional structure schematic diagram of the utility model;

[0021] Figure 2 It is the protection shell section structure schematic diagram of the utility model;

[0022] Figure 3 It is the three-dimensional structure schematic diagram of the utility model fan body;

[0023] Figure 4 It is the fan body side view structure schematic diagram of the utility model.

[0024] In the drawing: 1, protection shell;2, first sound absorption layer;3, fan body;4, drive motor;5, fan impeller;6, air outlet;7, second sound absorption layer;8, spacing cylinder;9, spacing plate;10, hoisting ring;11, protection door;12, fixed block;13, fixed bolt;14, connecting pipe;15, air inlet;16, filter screen board;17, connecting bolt. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical scheme and advantage of the utility model more clearly, the following is combined with the drawing and example, and the utility model is further detailedly explained.It should be understood that the specific example described here is only used to explain the utility model, and is not used to limit the utility model.

[0026] Implementation case one

[0027] As the attached Figures 1-3As shown, the utility model provides a technical scheme: a box type exhaust fan with noise reduction function, including protection shell 1, the inner wall of protection shell 1 is provided with first sound absorbing layer 2, the inside of protection shell 1 is provided with fan body 3, driving motor 4 is installed to the right side of fan body 3, the output shaft of driving motor 4 is connected with fan impeller 5, the output end of fan body 3 is connected with air outlet 6, the inner wall of air outlet 6 is provided with second sound absorbing layer 7, limit cylinder 8 is installed to the upper surface of protection shell 1, the output end of limit cylinder 8 is connected with limit plate 9, the upper end of protection shell 1 is provided with four lifting rings 10, protection shell 1, the inner wall of protection shell 1 is provided with first sound absorbing layer 2, the inside of protection shell 1 is provided with fan body 3, driving motor 4 is installed to the right side of fan body 3, the output shaft of driving motor 4 is connected with fan impeller 5, the output end of fan body 3 is connected with air outlet 6, the inner wall of air outlet 6 is provided with second sound absorbing layer 7, limit cylinder 8 is installed to the upper surface of protection shell 1, the output end of limit cylinder 8 is connected with limit plate 9, the upper end of protection shell 1 is provided with four lifting rings 10.

[0028] Example two

[0029] The scheme in example one is further introduced in combination with specific working modes, and details are described below:

[0030] As Figure 1 , Figure 2 and Figure 3 shown, as a preferred embodiment, on the basis of the above mode, further, the first sound absorbing layer 2 is fixedly connected between the protection shell 1, the driving motor 4 is bolted between the fan body 3, and the fan impeller 5 and the driving motor 4 form a rotating structure, the driving motor 4 arranged on the fan body 3 can drive the fan impeller 5 to rotate, so as to blow and heat the external equipment, and the first sound absorbing layer 2 arranged in the protection shell 1 can play a role in noise reduction, and the second sound absorbing layer 7 can further improve the noise reduction effect, and the practicability is strong; the air outlet 6 and the fan body 3 are in communication, the limit cylinder 8 is fixedly connected between the protection shell 1, and the limit plate 9 and the limit cylinder 8 form an extension structure, the limit cylinder 8 arranged on the protection shell 1 can drive the limit plate 9 to move vertically, so that the limit plate 9 clamps and limits the fan body 3, avoids the displacement of the fan body 3, and improves the stability.

[0031] As Figure 1 , Figure 2 and Figure 4As shown, as a preferred embodiment, on the basis of the above mode, further, the protective door 11 is hinged on the right side of the protective shell 1, the outer wall of the protective shell 1 is symmetrically provided with four fixed blocks 12, the fixed block 12 and the protective shell 1 are integrally fixed, the inside of the four fixed blocks 12 is provided with a fixed bolt 13, the fixed bolt 13 penetrates into the inside of the fixed block 12; through the fixed block 12 provided on the protective shell 1, the device is fixed and arranged under the cooperation of the fixed bolt 13, and the inside fan body 3 is maintained through the protective door 11; the connecting pipe 14 is arranged on the left side of the fan body 3, the left side of the connecting pipe 14 is connected with the air inlet 15, the air inlet 15 and the fan body 3 constitute a communication structure through the connecting pipe 14, the inside of the air inlet 15 is provided with a filter screen plate 16, the filter screen plate 16 and the air inlet 15 are detachably connected, the outer wall of the air inlet 15 is provided with a connecting bolt 17, the air drawn into the air inlet 15 can be filtered through the filter screen plate 16 arranged in the air inlet 15, which can effectively reduce the impurities entering the fan body 3, improve the practicability, and the connecting bolt 17 can be unscrewed to detach the air inlet 15, so that the filter screen plate 16 can be replaced.

[0032] From the above, it can be seen that:

[0033] The utility model discloses to the technical problem: the existing box -type exhaust fan will produce airflow noise in the operation process, if not eliminating noise, make the airflow noise will give the health of nearby resident and normal life influence, adopt the technical scheme of each embodiment above. Meanwhile, the implementation process of the above technical scheme is:

[0034] Before using the box type exhaust fan with noise reduction function, open the protective door 11 on the protective shell 1, then place the fan body 3 inside the protective shell 1, through the limiting cylinder 8 arranged on the protective shell 1, the limiting cylinder 8 drives the limiting plate 9 to move vertically, so that the limiting plate 9 moves downward to clamp and limit the fan body 3, which can effectively reduce the displacement of the fan body 3 and improve the stability, then through the lifting ring 10 arranged on the protective shell 1, use the lifting equipment to place the device at a suitable position, and then tighten the fixing bolt 13 on the fixing block 12 to fix the device, when in use, through the driving motor 4 arranged on the fan body 3, the fan impeller 5 can be driven to rotate, so that the external air is sucked into the inside through the air inlet 15 and the connecting pipe 14, and the air sucked in can be filtered through the filter screen 16 arranged, which can effectively reduce the impurities entering the fan body 3, and the utility is strong, the air sucked in is blown out through the air outlet 6, so that the external equipment is cooled, the first sound-absorbing layer 2 arranged in the protective shell 1 can absorb the noise generated when the fan body 3 operates, so as to achieve a certain noise reduction effect, and the second sound-absorbing layer 7 arranged on the air outlet 6 can further reduce the noise generated when the air is discharged, improve the practicability, and the connecting bolt 17 arranged on the air inlet 15 can be unscrewed, so that the air inlet 15 can be removed from the protective shell 1, facilitating the disassembly and replacement of the filter screen 16 inside the air inlet 15.

[0035] Through the above arrangement, the above technical problems can be solved, and the following technical effects can be achieved:

[0036] The driving motor 4 arranged on the fan body 3 can drive the fan impeller 5 to rotate, so that the external equipment is blown and cooled, and the first sound-absorbing layer 2 arranged in the protective shell 1 can play a role in noise reduction, and the second sound-absorbing layer 7 can further improve the noise reduction effect, and the utility is strong; the limiting cylinder 8 arranged on the protective shell 1 can drive the limiting plate 9 to move vertically, so that the limiting plate 9 clamps and limits the fan body 3, avoiding displacement of the fan body 3 and improving the stability;

[0037] The fixing block 12 arranged on the protective shell 1 is convenient for fixing and arranging the device under the cooperation of the fixing bolt 13, and the protective door 11 is convenient for maintaining the fan body 3 inside; the filter screen 16 arranged in the air inlet 15 can filter the air sucked in, which can effectively reduce the impurities entering the fan body 3 and improve the practicability, and the connecting bolt 17 can be unscrewed to disassemble the air inlet 15, which is convenient for replacing the filter screen 16.

[0038] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A box-type exhaust fan with noise reduction function, characterized in that, include: A protective shell (1) is provided with a first sound-absorbing layer (2) on the inner wall of the protective shell (1). A fan body (3) is provided inside the protective shell (1). A drive motor (4) is installed on the right side of the fan body (3). The output shaft of the drive motor (4) is connected to a fan impeller (5). An air outlet (6) is connected to the output end of the fan body (3). A second sound-absorbing layer (7) is provided on the inner wall of the air outlet (6). A limit cylinder (8) is installed on the upper surface of the protective shell (1). A limit plate (9) is connected to the output end of the limit cylinder (8). Four lifting rings (10) are symmetrically arranged on the upper end of the protective shell (1).

2. A box-type exhaust fan with noise reduction function according to claim 1, characterized in that, The first sound-absorbing layer (2) is fixedly connected to the protective shell (1), the drive motor (4) is bolted to the fan body (3), and the fan impeller (5) and the drive motor (4) form a rotating structure.

3. A box-type exhaust fan with noise reduction function according to claim 1, characterized in that, The air outlet (6) is connected to the fan body (3), the limiting cylinder (8) is fixedly connected to the protective shell (1), and the limiting plate (9) and the limiting cylinder (8) form a telescopic structure.

4. A box-type exhaust fan with noise reduction function according to claim 1, characterized in that, The protective shell (1) is also provided with: The protective door (11) is hinged to the right side of the protective shell (1). Four fixing blocks (12) are symmetrically arranged on the outer wall of the protective shell (1), and fixing bolts (13) are arranged inside the four fixing blocks (12).

5. A box-type exhaust fan with noise reduction function according to claim 4, characterized in that, The fixing block (12) and the protective shell (1) are an integral fixing structure, and the fixing bolt (13) penetrates into the interior of the fixing block (12).

6. A box-type exhaust fan with noise reduction function according to claim 1, characterized in that, The fan body (3) is also provided with: A connecting pipe (14) is provided on the left side of the fan body (3). An air inlet (15) is connected to the left side of the connecting pipe (14). A filter screen (16) is provided inside the air inlet (15). A connecting bolt (17) is installed on the outer wall of the air inlet (15).

7. A box-type exhaust fan with noise reduction function according to claim 6, characterized in that, The air inlet (15) is connected to the fan body (3) through the connecting pipe (14), and the filter screen (16) is detachably connected to the air inlet (15).

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