CN210290283U - Double-speed muffling type mixed-flow fan - Google Patents
Double-speed muffling type mixed-flow fan Download PDFInfo
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- CN210290283U CN210290283U CN201921131657.6U CN201921131657U CN210290283U CN 210290283 U CN210290283 U CN 210290283U CN 201921131657 U CN201921131657 U CN 201921131657U CN 210290283 U CN210290283 U CN 210290283U
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Abstract
The utility model provides a double speed sound absorption type mixed flow fan, the utility model relates to the technical field of ventilation blower, it includes noise reduction mechanism, double speed mixed flow fan body, locking bolt, supporting seat, bottom plate; the left side and the right side of the double-speed mixed flow fan body are both fixedly provided with a silencing mechanism through locking bolts; the bottom of the silencing mechanism and the bottom of the double-speed mixed flow fan body are both fixedly provided with a plurality of supporting seats, and the bottoms of the supporting seats are fixedly arranged at the upper part of the bottom plate; an inner shell is arranged inside the outer shell, and a gap is formed between the outer shell and the inner shell; the fixed plate is fixedly connected with the left side and the right side of the double-speed mixed flow fan body through locking bolts; the inner side of the inner shell is provided with a sound absorption plate; the middle part of acoustic baffle is provided with the amortization box perpendicularly, and the cotton layer of amortization is all fixed to be filled out between acoustic baffle and the interior casing and the inside of amortization box, and device overall structure is simple, under the prerequisite that does not influence fan ventilation effect, reduces the assembly step, improves noise cancelling effect.
Description
Technical Field
The utility model relates to a ventilation blower technical field, concretely relates to double speed amortization type mixed flow fan.
Background
The mixed flow fan is a fan between the axial flow fan and the centrifugal fan, an impeller of the mixed flow fan enables air to do centrifugal motion and axial motion, and the motion of the air in the shell is mixed with two motion forms of axial flow and centrifugation, so that the mixed flow fan is called as a mixed flow fan; the noise that produces when double speed mixed flow fan moves has consequently produced double speed noise reduction type mixed flow fan, though installed the silencer on the fan among the prior art, this type of silencer is complicated, the assembly is loaded down with trivial details, noise cancelling effect poor usually, and internally mounted has more anti-noise plate, has influenced ventilation effect, awaits urgent need to improve.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to prior art's defect and not enough, provide a reasonable in design's double speed noise elimination type mixed flow fan, device overall structure is simple, under the prerequisite that does not influence fan ventilation effect, reduces the assembly step, improves noise cancelling effect, and the practicality is strong.
In order to achieve the above purpose, the utility model adopts the following technical proposal: the double-speed mixed flow fan comprises a silencing mechanism, a double-speed mixed flow fan body, a locking bolt, a supporting seat and a bottom plate; the left side and the right side of the double-speed mixed flow fan body are both fixedly provided with a silencing mechanism through locking bolts; the bottom of the silencing mechanism and the bottom of the double-speed mixed flow fan body are both fixedly provided with a plurality of supporting seats, and the bottoms of the supporting seats are fixedly arranged at the upper part of the bottom plate;
the silencing mechanism comprises an inner shell, an outer shell, a silencing cotton layer, a sound absorption plate, a silencing box body, a rotating shaft and a rotating handle; an inner shell is arranged inside the outer shell, and a gap is formed between the outer shell and the inner shell; the right ends of the outer shell and the inner shell are fixedly provided with fixed plates, the left ends of the outer shell and the inner shell are fixedly provided with end plates, and the middle parts of the fixed plates and the end plates are fixedly provided with through grooves; the fixed plate is fixedly connected with the left side and the right side of the double-speed mixed flow fan body through locking bolts; the inner side of the inner shell is provided with a sound absorption plate, the left end and the right end of the sound absorption plate are respectively and fixedly arranged on the right side wall of the end plate and the left side wall of the fixed plate, and a gap is formed between the sound absorption plate and the inner side wall of the inner shell; a silencing box body is vertically arranged in the middle of the sound absorption plate, a plurality of through holes are fixedly formed in the side walls of the silencing box body and the sound absorption plate, and silencing cotton layers are fixedly filled between the sound absorption plate and the inner shell and inside the silencing box body; the fixed pivot of wearing to be equipped with in the inside of noise damping box, the pivot lower extreme passes through the bearing rotation and inserts the upper portion of establishing at the acoustic baffle, and fixed connection is twisted with rotatory hand after the upper end of pivot passed acoustic baffle, amortization cotton layer, interior casing and shell body in proper order.
Further, the diameters of the inner shell and the outer shell are gradually reduced from left to right.
Furthermore, the front side and the rear side of the bottom of the supporting seat are symmetrically and fixedly provided with two rubber cushion blocks, and the rubber cushion blocks are arranged between the supporting seat and the bottom plate and are fixedly connected through bolts.
Furthermore, the upper portion of the inner side wall of the end plate is fixedly provided with a decibel instrument, and a display of the decibel instrument is fixedly arranged on the front side wall of the double-speed mixed flow fan body.
Furthermore, the middle part of the end plate is fixedly provided with a dustproof screen plate.
Further, the inside wall of end board on the equal fillet fixed several elasticity buckle that is provided with, dustproof otter board's peripheral fixing clip establishes in the inside of elasticity buckle, the elasticity buckle is the rubber buckle.
After the structure is adopted, the beneficial effects of the utility model are that: a double speed amortization type mixed flow fan, device overall structure is simple, under the prerequisite that does not influence fan ventilation effect, reduces the assembly step, improves noise cancelling effect, the practicality is strong, the utility model has the advantages of set up rationally, the cost of manufacture low grade.
Description of the drawings:
fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a left side view of fig. 1.
Fig. 3 is a sectional view of a-a portion in fig. 1.
Fig. 4 is a schematic structural diagram of the silencing mechanism of the present invention.
Fig. 5 is an enlarged schematic view of a portion B in fig. 4.
Fig. 6 is a schematic view of the connection structure of the sound-deadening box body, the rotating shaft and the hand screw of the present invention.
Description of reference numerals:
the sound absorption device comprises a sound absorption mechanism 1, an inner shell 1-1, an outer shell 1-2, a sound absorption cotton layer 1-3, a sound absorption plate 1-4, a sound absorption box body 1-5, a rotating shaft 1-6, a rotating hand 1-7, a head plate 1-8, a fixing plate 1-9, a double-speed mixed flow fan body 2, a locking bolt 3, a supporting seat 4, a bottom plate 5, a rubber cushion block 6, a decibel meter 7, a dustproof screen plate 8 and an elastic buckle 9.
The specific implementation mode is as follows:
the technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
As shown in fig. 1 to fig. 6, the following technical solutions are adopted in the present embodiment: the double-speed mixed flow fan comprises a silencing mechanism 1, a double-speed mixed flow fan body 2, a locking bolt 3, a supporting seat 4 and a bottom plate 5; the left side and the right side of the double-speed mixed flow fan body 2 are both fixedly provided with a silencing mechanism 1 through locking bolts 3; the bottom of the silencing mechanism 1 and the bottom of the double-speed mixed flow fan body 2 are fixedly welded with two supporting seats 4, and the bottoms of the supporting seats 4 are fixedly arranged on the upper part of the bottom plate 5 through bolts;
the silencing mechanism 1 comprises an inner shell 1-1, an outer shell 1-2, a silencing cotton layer 1-3, a sound absorption plate 1-4, a silencing box body 1-5, a rotating shaft 1-6 and a rotating hand 1-7; the inner shell 1-1 is arranged inside the outer shell 1-2, a gap is formed between the outer shell 1-2 and the inner shell 1-1, and the vacuum gap can prevent noise inside the silencing mechanism 1 from being transmitted to the outer side of the outer shell 1-2, so that a sound insulation effect is achieved; the right ends of the outer shell 1-2 and the inner shell 1-1 are fixedly welded with fixing plates 1-9, the left ends of the outer shell 1-2 and the inner shell 1-1 are fixedly welded with end plates 1-8, and the middle parts of the fixing plates 1-9 and the end plates are fixedly provided with through grooves for facilitating air flow to pass through the interior of the silencing mechanism 1; the fixed plates 1-9 are fixedly connected with the left side and the right side of the double-speed mixed flow fan body 2 through locking bolts 3; the inner side of the inner shell 1-1 is provided with a sound absorption plate 1-4, the left end and the right end of the sound absorption plate 1-4 are respectively fixedly welded on the right side wall of the end plate 1-8 and the left side wall of the fixed plate 1-9, and a gap is arranged between the sound absorption plate 1-4 and the inner side wall of the inner shell 1-1; the middle part of the sound absorption plate 1-4 is vertically provided with a sound attenuation box body 1-5, the side walls of the sound attenuation box body 1-5 and the sound absorption plate 1-4 are respectively and fixedly provided with a plurality of through holes, sound attenuation cotton layers 1-3 are respectively and fixedly filled between the sound absorption plate 1-4 and the inner shell 1-1 and inside the sound attenuation box body 1-5, and the sound attenuation cotton layers 1-3 are composed of sound absorption materials such as rock wool layers, glass wool layers, aluminum fiber plates, foamed aluminum and the like; the inside of the sound attenuation box body 1-5 is fixedly welded with a rotating shaft 1-6 in a penetrating way, the lower end of the rotating shaft 1-6 is rotatably inserted at the upper part of the sound absorption plate 1-4 through a bearing, and the upper end of the rotating shaft 1-6 is fixedly welded with a rotating hand 1-7 after sequentially passing through the sound absorption plate 1-4, the sound attenuation cotton layer 1-3, the inner shell 1-1 and the outer shell 1-2.
Furthermore, the diameters of the inner shell 1-1 and the outer shell 1-2 are gradually reduced from left to right, the propagation direction of the airflow is changed, and the noise reduction effect is achieved.
Further, the front side and the rear side of the bottom of the supporting seat 4 are symmetrically and fixedly provided with two rubber cushion blocks 6, the rubber cushion blocks 6 are arranged between the supporting seat 4 and the bottom plate 5 in a cushioning mode, the rubber cushion blocks 6 can block the propagation path of vibration through fixed connection of bolts, and the vibration noise generated in the operation process of the whole device is reduced.
Further, the upper portion of the inner side wall of the end board 1-8 is fixedly provided with a decibel meter 7 through bolts, a display of the decibel meter 7 is fixedly arranged on the front side wall of the double-speed mixed flow fan body 2, and the decibel meter 7 is a decibel measuring instrument with a display screen in the prior art.
Furthermore, the middle part of the end plate 1-8 is fixedly provided with a dustproof screen 8, and the dustproof screen 8 can reduce dust from entering the interior of the silencing mechanism 1 and prevent the dust from blocking through holes on the sound absorbing plates 1-4 and the silencing boxes 1-5.
Furthermore, a plurality of elastic buckles 9 are fixedly arranged on the inner side wall of the end plate 1-8 in an equal round angle mode, the periphery of the dustproof screen plate 8 is fixedly clamped inside the elastic buckles 9, and the elastic buckles 9 are rubber buckles.
The working principle of the specific embodiment is as follows: the double-speed mixed flow fan is characterized in that a double-speed mixed flow fan body 2 is connected with an external power supply, the double-speed mixed flow fan body 2 pumps air from a left silencing mechanism 1 to the inner side of a right silencing mechanism 1 and then discharges the air, when the air flow passes through the inner part of an inner shell 1-1, the diameters of the inner shell 1-1 and an outer shell 1-2 are gradually reduced from left to right, the air flow collides with a sound absorption plate 1-4, and the noise generated by the air flow is absorbed into a silencing cotton layer 1-3 through a through hole on the sound absorption plate 1-4, so that the noise can be reduced; by rotating the rotating shafts 1-6, the rotating shafts 1-6 drive the silencing boxes 1-5 to rotate, the contact area between the silencing boxes 1-5 and the vertical surface of the air flow can be increased or reduced, so that the advancing speed of the air flow can be adjusted, the functions of silencing and denoising are achieved, the dustproof screen plate 8 can reduce dust entering the interior of the silencing mechanism 1, and the dust is prevented from blocking through holes in the sound absorbing plates 1-4 and the silencing boxes 1-5.
After adopting above-mentioned structure, this embodiment's beneficial effect is as follows: this embodiment a double speed type of eliminating noise mixed flow fan, device overall structure is simple, under the prerequisite that does not influence fan ventilation effect, reduces the assembly step, improves noise cancelling effect, and the practicality is strong, the utility model has the advantages of set up rationally, the cost of manufacture low grade.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.
Claims (6)
1. A double-speed muffling type mixed-flow fan is characterized in that: the double-speed mixed flow fan comprises a silencing mechanism (1), a double-speed mixed flow fan body (2), a locking bolt (3), a supporting seat (4) and a bottom plate (5); the left side and the right side of the double-speed mixed flow fan body (2) are both fixedly provided with a silencing mechanism (1) through locking bolts (3); the bottom of the silencing mechanism (1) and the bottom of the double-speed mixed flow fan body (2) are both fixedly provided with a plurality of supporting seats (4), and the bottoms of the supporting seats (4) are fixedly arranged on the upper part of the bottom plate (5);
the silencing mechanism (1) comprises an inner shell (1-1), an outer shell (1-2), a silencing cotton layer (1-3), a sound absorption plate (1-4), a silencing box body (1-5), a rotating shaft (1-6) and a rotating hand (1-7); an inner shell (1-1) is arranged inside the outer shell (1-2), and a gap is arranged between the outer shell (1-2) and the inner shell (1-1); the right ends of the outer shell (1-2) and the inner shell (1-1) are fixedly provided with fixing plates (1-9), the left ends of the outer shell (1-2) and the inner shell (1-1) are fixedly provided with end plates (1-8), and the middle parts of the fixing plates (1-9) and the end plates are fixedly provided with through grooves; the fixed plates (1-9) are fixedly connected with the left side and the right side of the double-speed mixed flow fan body (2) through locking bolts (3); the inner side of the inner shell (1-1) is provided with a sound absorption plate (1-4), the left end and the right end of the sound absorption plate (1-4) are respectively and fixedly arranged on the right side wall of the end plate (1-8) and the left side wall of the fixing plate (1-9), and a gap is arranged between the sound absorption plate (1-4) and the inner side wall of the inner shell (1-1); the middle part of the sound absorption plate (1-4) is vertically provided with a sound attenuation box body (1-5), the side walls of the sound attenuation box body (1-5) and the sound absorption plate (1-4) are respectively and fixedly provided with a plurality of through holes, and sound attenuation cotton layers (1-3) are respectively and fixedly filled between the sound absorption plate (1-4) and the inner shell (1-1) and inside the sound attenuation box body (1-5); the rotating shaft (1-6) is fixedly arranged in the silencing box body (1-5) in a penetrating mode, the lower end of the rotating shaft (1-6) is rotatably inserted into the upper portion of the sound absorption plate (1-4) through a bearing, and the upper end of the rotating shaft (1-6) penetrates through the sound absorption plate (1-4), the silencing cotton layer (1-3), the inner shell (1-1) and the outer shell (1-2) in sequence and then is fixedly connected with the rotating hand (1-7).
2. The double-speed muffling type mixed-flow fan according to claim 1, wherein: the diameters of the inner shell (1-1) and the outer shell (1-2) are gradually reduced from left to right.
3. The double-speed muffling type mixed-flow fan according to claim 1, wherein: two rubber cushion blocks (6) are symmetrically and fixedly arranged on the front side and the rear side of the bottom of the supporting seat (4), and the rubber cushion blocks (6) are arranged between the supporting seat (4) and the bottom plate (5) in a cushioning mode and are fixedly connected through bolts.
4. The double-speed muffling type mixed-flow fan according to claim 1, wherein: the upper part of the inner side wall of the end plate (1-8) is fixedly provided with a decibel meter (7), and a display of the decibel meter (7) is fixedly arranged on the front side wall of the double-speed mixed flow fan body (2).
5. The double-speed muffling type mixed-flow fan according to claim 1, wherein: the middle part of the end plate (1-8) is fixedly provided with a dustproof screen plate (8).
6. The two-speed muffling type mixed flow fan according to claim 5, wherein: a plurality of elastic buckles (9) are fixedly arranged on the inner side walls of the end plates (1-8) in an equal-radius angle mode, the periphery of the dustproof screen plate (8) is fixedly clamped inside the elastic buckles (9), and the elastic buckles (9) are rubber buckles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921131657.6U CN210290283U (en) | 2019-07-18 | 2019-07-18 | Double-speed muffling type mixed-flow fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921131657.6U CN210290283U (en) | 2019-07-18 | 2019-07-18 | Double-speed muffling type mixed-flow fan |
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| Publication Number | Publication Date |
|---|---|
| CN210290283U true CN210290283U (en) | 2020-04-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921131657.6U Active CN210290283U (en) | 2019-07-18 | 2019-07-18 | Double-speed muffling type mixed-flow fan |
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| CN (1) | CN210290283U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114837998A (en) * | 2022-05-23 | 2022-08-02 | 山东省章丘鼓风机股份有限公司 | Air inlet box of double-support ventilator |
| CN116517890A (en) * | 2023-06-27 | 2023-08-01 | 平安电气股份有限公司 | Ventilator adopting vacuum combined silencing structure |
-
2019
- 2019-07-18 CN CN201921131657.6U patent/CN210290283U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114837998A (en) * | 2022-05-23 | 2022-08-02 | 山东省章丘鼓风机股份有限公司 | Air inlet box of double-support ventilator |
| CN114837998B (en) * | 2022-05-23 | 2023-12-08 | 山东省章丘鼓风机股份有限公司 | Double-support ventilator air inlet box |
| CN116517890A (en) * | 2023-06-27 | 2023-08-01 | 平安电气股份有限公司 | Ventilator adopting vacuum combined silencing structure |
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