CN219345096U

CN219345096U - Silencing mechanism of centrifugal fan of external motor

Info

Publication number: CN219345096U
Application number: CN202320411478.8U
Authority: CN
Inventors: 陈兴龙
Original assignee: Zhejiang Longxin Fan Co ltd
Current assignee: Zhejiang Longxin Fan Co ltd
Priority date: 2023-03-07
Filing date: 2023-03-07
Publication date: 2023-07-14
Anticipated expiration: 2033-03-07

Abstract

The utility model discloses a silencing mechanism of a centrifugal fan of an external motor, which belongs to the field of silencing mechanisms and comprises a protective box, wherein the centrifugal fan is arranged in the protective box, a silencing shell is fixedly arranged on one side surface of the protective box, an access door is movably arranged at the upper end of the silencing shell, a supporting support is arranged in the silencing shell, the external motor is arranged above the supporting support in the silencing shell, silencing cotton is fixedly arranged on the inner wall of the silencing shell, and a closing device is arranged in the silencing shell. Through the seam closing device that sets up, flexible slide bar jack-up lift layer board under reset spring's elasticity effect for close the cotton interior roof of amortization of close cushion laminating, seam closing amortization cotton frame laminating this moment is in the gap mouth department between amortization shell and access door, can strengthen the closed leakproofness of access door and amortization shell like this, is located the gap mouth department between amortization shell and the access door and adds the condition that the noise of motor work can be alleviated and the transmission of passing through the gap to seam amortization cotton frame.

Description

Silencing mechanism of centrifugal fan of external motor

Technical Field

The utility model relates to the field of silencing mechanisms, in particular to a silencing mechanism of a centrifugal fan with an external motor.

Background

The centrifugal fan is a driven fluid machine which is used for increasing the pressure of gas and exhausting the gas by means of the input mechanical energy, is widely used for ventilation, dust removal and cooling of factories, mines, tunnels, cooling towers, vehicles, ships and buildings, and is provided with a protective box with limited inner space, so that the motor is arranged outside the protective box for convenient installation and maintenance of the motor, and meanwhile, a silencing shell is covered outside the motor for reducing the noise generated during the operation of the motor, and silencing cotton is paved on the inner wall of the silencing shell to achieve the aim of reducing the noise transmission; however, the existing motor silencing shell is provided with an access door, and the joint between the access door and the silencing shell can generate noise transmission, so that the motor silencing shell capable of filling the joint and enhancing the sealing performance of the access door under pressurization is provided.

Disclosure of Invention

The utility model mainly aims to provide a silencing mechanism of a centrifugal fan of an external motor, which can effectively solve the problems in the background technology.

In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:

the utility model provides a centrifugal fan's of external motor amortization mechanism, includes the protective housing, the inside of protective housing is provided with centrifugal fan, one side fixed surface of protective housing installs the amortization shell, the upper end movable mounting of amortization shell has the access door, the inside of amortization shell is provided with the support, the inside of amortization shell is located the top of support and is provided with external motor, the inner wall fixed mounting of amortization shell has the amortization cotton, the inside of amortization shell is provided with the closing device, the closing device includes lift layer board, pastes tight cushion, closes seam amortization cotton frame, flexible slide bar, flexible sliding sleeve and moves away the slider, the lower terminal surface fixed mounting of lift layer board has flexible slide bar, the outer cover of flexible slide bar is equipped with flexible sliding sleeve, the lower terminal surface fixed mounting of flexible sliding sleeve moves away the slider, the upper surface fixed mounting of lift layer board has the tight cushion of subsides, the upper surface fixed mounting of pasting tight cushion has the closing seam amortization cotton frame.

As a further improvement of the scheme, a reset spring is arranged in the telescopic sliding sleeve, one end of the reset spring is fixedly connected with the lower end face of the telescopic sliding rod, and the lower end of the reset spring is fixedly connected with the upper surface of the telescopic sliding sleeve.

As a further improvement of the scheme, the telescopic sliding rod slides up and down in the telescopic sliding sleeve, and the upper surface of the supporting support is provided with a moving-away sliding groove.

As a further improvement of the scheme, the telescopic sliding sleeve slides at the moving-away sliding groove of the supporting support through the moving-away sliding block, two groups of the moving-away sliding block and the telescopic sliding sleeve are symmetrically arranged on the surface of the supporting support, and the moving-away sliding block and the telescopic sliding sleeve are distributed on two sides of the external motor.

As a further improvement of the scheme, an access hole is formed in the upper end face of the silencing shell at the access door, the closed-seam silencing cotton frame is arranged at the joint of the access door and the silencing shell, and the close-seam rubber pad is arranged below the inner top wall of the silencing cotton.

As a further improvement of the scheme, the output shaft of the external motor penetrates through the silencing cotton and the silencing shell, the output shaft of the external motor penetrates out of the silencing shell and is fixedly connected with the centrifugal fan, and the upper surface of the access door is fixedly provided with a door opening handle.

Compared with the prior art, the utility model has the following beneficial effects:

according to the utility model, through the arranged seam closing device, the telescopic slide bar lifts the lifting supporting plate under the elastic force of the reset spring, so that the close rubber pad is closely attached to the inner top wall of the silencing cotton, and the seam closing silencing cotton frame is attached to the gap between the silencing shell and the access door, so that the tightness of the closing of the access door and the silencing shell can be enhanced, and the gap between the silencing shell and the access door is additionally provided with the seam closing silencing cotton frame, so that the condition that the noise of motor operation is transmitted through the gap can be relieved.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

FIG. 2 is a cross-sectional view of a sound damping shell of the present utility model;

FIG. 3 is a schematic view of the structure of the noise damping cotton of the present utility model;

fig. 4 is a cross-sectional view of the telescoping slip sleeve of the present utility model.

In the figure: 1. a protective box; 2. a centrifugal fan; 3. a sound deadening shell; 4. an access door; 5. a door opening handle; 6. silencing cotton; 7. a closing device; 8. an access opening; 9. lifting the supporting plate; 10. tightly sticking the rubber cushion; 11. closing the seam and silencing the cotton frame; 12. a telescopic slide bar; 13. a telescopic sliding sleeve; 14. a return spring; 15. removing the slide block; 16. supporting the support; 17. removing the chute; 18. an external motor.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

As shown in fig. 1-4, the silencing mechanism of the centrifugal fan of the external motor comprises a protective box 1, the centrifugal fan 2 is arranged in the protective box 1, a silencing shell 3 is fixedly arranged on one side surface of the protective box 1, an access door 4 is movably arranged at the upper end of the silencing shell 3, a supporting support 16 is arranged in the silencing shell 3, an external motor 18 is arranged above the supporting support 16, silencing cotton 6 is fixedly arranged on the inner wall of the silencing shell 3, a seam closing device 7 is arranged in the silencing shell 3, an access hole 8 is arranged at the access door 4 on the upper end face of the silencing shell 3, a seam closing silencing cotton frame 11 is arranged at the joint of the access door 4 and the silencing shell 3, a close rubber pad 10 is arranged below the inner top wall of the silencing cotton 6, an output shaft of the external motor 18 penetrates through the silencing cotton 6 and the silencing shell 3, an output shaft of the external motor 18 penetrates out of the shell 3 and is fixedly connected with the centrifugal fan 2, and a handle 5 is fixedly arranged on the upper surface of the silencing door 4.

The closing device 7 comprises a lifting supporting plate 9, an attaching rubber mat 10, a closing silencing cotton frame 11, a telescopic sliding rod 12, a telescopic sliding sleeve 13 and a removing sliding block 15, wherein the telescopic sliding rod 12 is fixedly arranged on the lower end face of the lifting supporting plate 9, the telescopic sliding sleeve 13 is sleeved outside the telescopic sliding rod 12, the removing sliding block 15 is fixedly arranged on the lower end face of the telescopic sliding sleeve 13, the attaching rubber mat 10 is fixedly arranged on the upper surface of the lifting supporting plate 9, the closing silencing cotton frame 11 is fixedly arranged on the upper surface of the attaching rubber mat 10, a reset spring 14 is arranged in the telescopic sliding sleeve 13, one end of the reset spring 14 is fixedly connected with the lower end face of the telescopic sliding rod 12, the lower end of the reset spring 14 is fixedly connected with the upper surface of the telescopic sliding sleeve 13, the telescopic sliding rod 12 slides up and down in the telescopic sliding sleeve 13, a removing sliding groove 17 is formed in the upper surface of a supporting support 16, the telescopic sliding sleeve 13 slides at the position of the moving-away sliding groove 17 of the supporting support 16 through the moving-away sliding block 15, two groups of moving-away sliding blocks 15 and telescopic sliding sleeves 13 are symmetrically arranged on the surface of the supporting support 16, the moving-away sliding blocks 15 and the telescopic sliding sleeves 13 are distributed on two sides of the external motor 18, the telescopic sliding rods 12 lift the lifting supporting plate 9 under the action of the elastic force of the reset springs 14, the close rubber pad 10 is tightly attached to the inner top wall of the silencing cotton 6, the closed-joint silencing cotton frame 11 is attached to the gap between the silencing shell 3 and the access door 4, the tightness of the closing of the access door 4 and the silencing shell 3 can be enhanced, and the closed-joint silencing cotton frame 11 is added at the gap between the silencing shell 3 and the access door 4, so that the noise of the motor operation can be relieved and the condition that the noise is transmitted through the gap can be transmitted.

It should be noted that, when the silencer mechanism of the centrifugal fan with the external motor is used, the access door 4 covers the access hole 8 of the silencing shell 3, at this time, the telescopic slide bar 12 pushes up the lifting support plate 9 under the action of the elasticity of the return spring 14, so that the elastic cushion 10 is tightly attached to the inner top wall of the silencing cotton 6, at this time, the slot-closing silencing cotton frame 11 is attached to the gap between the silencing shell 3 and the access door 4, so that the tightness of the closure of the access door 4 and the silencing shell 3 can be enhanced, the slot-closing silencing cotton frame 11 is added at the gap between the silencing shell 3 and the access door 4, so that the noise of the motor working can be relieved and transmitted out through the slot, when the service door 4 is opened, then the elastic cushion 10 is pressed inwards, the lifting support plate 9 and the telescopic slide bar 12 are driven to descend and compress the return spring 14, then the lifting support plate 9 is pushed to two sides, and the removing slide block 15 is removed to two sides along the removing slide groove 17 of the supporting support 16 and the access hole 8 is opened.

The foregoing has shown and described the basic principles and main features of the present utility model and the advantages of the present utility model. Although embodiments of the present utility model have been shown and described, it is therefore not intended to limit the scope of the utility model to the equivalent structures or equivalent processes using the description of the utility model and the accompanying drawings, or to use directly or indirectly in other related technical fields, which are equally encompassed by the scope of the utility model, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations of these embodiments may be made without departing from the principle and spirit of the utility model, the scope of which is defined by the appended claims and their equivalents.

Claims

1. The utility model provides a centrifugal fan's of external motor amortization mechanism, includes protective housing (1), its characterized in that: the inside of protective housing (1) is provided with centrifugal fan (2), one side fixed surface of protective housing (1) installs amortization shell (3), the upper end movable mounting of amortization shell (3) has access door (4), the inside of amortization shell (3) is provided with holds up support (16), the inside of amortization shell (3) is located the top of holding up support (16) and is provided with external motor (18), the inner wall fixed mounting of amortization shell (3) has amortization cotton (6), the inside of amortization shell (3) is provided with seam closing device (7), seam closing device (7) are including lift layer board (9), tight cushion (10), close seam amortization cotton frame (11), flexible slide bar (12), flexible slide bar (13) and move away slider (15), the lower terminal surface fixed mounting of lift layer board (9) has flexible slide bar (12), the outside cover of flexible slide bar (12) is equipped with flexible slide bar (13), the lower terminal surface fixed mounting of flexible slide bar (13) moves away slider (15), the tight surface mounting of lift layer board (10) is gone up and is had tight cushion (10).

2. The sound deadening mechanism of a centrifugal fan of an external motor according to claim 1, characterized in that: the inside of flexible sliding sleeve (13) is provided with reset spring (14), the one end of reset spring (14) is connected with the lower terminal surface fixed of flexible slide bar (12), the lower extreme of reset spring (14) is connected with the upper surface fixed of flexible sliding sleeve (13).

3. The silencing mechanism of the centrifugal fan of the external motor according to claim 2, wherein: the telescopic slide rod (12) slides up and down in the telescopic slide sleeve (13), and a moving-away slide groove (17) is formed in the upper surface of the supporting support (16).

4. The silencing mechanism of the centrifugal fan of the external motor according to claim 3, wherein: the telescopic sliding sleeve (13) slides at a moving-away sliding groove (17) of the supporting support (16) through a moving-away sliding block (15), two groups of the moving-away sliding block (15) and the telescopic sliding sleeve (13) are symmetrically arranged on the surface of the supporting support (16), and the moving-away sliding block (15) and the telescopic sliding sleeve (13) are distributed on two sides of the external motor (18).

5. The silencing mechanism of the centrifugal fan of the external motor according to claim 4, wherein: the upper end face of the silencing shell (3) is provided with an access hole (8) at the access door (4), the seam closing silencing cotton frame (11) is arranged at the joint of the access door (4) and the silencing shell (3), and the tightly-adhered rubber pad (10) is arranged below the inner top wall of the silencing cotton (6).

6. The silencing mechanism of the centrifugal fan of the external motor according to claim 5, wherein: the output shaft of the external motor (18) penetrates through the silencing cotton (6) and the silencing shell (3), the output shaft of the external motor (18) penetrates out of the silencing shell (3) and then is fixedly connected with the centrifugal fan (2), and the upper surface of the access door (4) is fixedly provided with a door opening handle (5).