CN117052723B - Medium-low frequency muffler of centrifugal fan and application method thereof - Google Patents
Medium-low frequency muffler of centrifugal fan and application method thereof Download PDFInfo
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- CN117052723B CN117052723B CN202311321846.0A CN202311321846A CN117052723B CN 117052723 B CN117052723 B CN 117052723B CN 202311321846 A CN202311321846 A CN 202311321846A CN 117052723 B CN117052723 B CN 117052723B
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- muffler
- fixedly connected
- shell
- air
- pipe
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- 238000000034 method Methods 0.000 title claims abstract description 36
- 230000003584 silencer Effects 0.000 claims abstract description 60
- 238000007789 sealing Methods 0.000 claims abstract description 36
- 230000007246 mechanism Effects 0.000 claims abstract description 24
- 230000009467 reduction Effects 0.000 claims abstract description 20
- 230000030279 gene silencing Effects 0.000 claims abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 125
- 230000008569 process Effects 0.000 claims description 22
- 239000007921 spray Substances 0.000 claims description 19
- 238000004140 cleaning Methods 0.000 claims description 7
- 239000000498 cooling water Substances 0.000 abstract description 12
- 230000009286 beneficial effect Effects 0.000 abstract description 4
- 239000000428 dust Substances 0.000 description 9
- 230000002349 favourable effect Effects 0.000 description 7
- 238000001816 cooling Methods 0.000 description 4
- 206010003497 Asphyxia Diseases 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000008030 elimination Effects 0.000 description 3
- 238000003379 elimination reaction Methods 0.000 description 3
- 238000007667 floating Methods 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 238000011946 reduction process Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
- F04D29/663—Sound attenuation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
- F04D29/661—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps
- F04D29/668—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for elastic fluid pumps damping or preventing mechanical vibrations
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/70—Suction grids; Strainers; Dust separation; Cleaning
- F04D29/701—Suction grids; Strainers; Dust separation; Cleaning especially adapted for elastic fluid pumps
- F04D29/703—Suction grids; Strainers; Dust separation; Cleaning especially adapted for elastic fluid pumps specially for fans, e.g. fan guards
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust Silencers (AREA)
Abstract
The utility model relates to the technical field of silencers, in particular to a middle-low frequency silencer of a centrifugal fan and a use method thereof, and the silencer comprises a silencer shell, wherein a plurality of inclined silencing plates are fixedly connected in the silencer shell at equal intervals; the sealing plate mechanism is arranged at the air outlet of the muffler shell; the utility model can increase the weight of the muffler shell by arranging the auxiliary noise reduction mechanism, is beneficial to leading the muffler shell not to vibrate easily, and is beneficial to reducing the noise generated by the vibration of the muffler shell, and on the other hand, the cooling water pumped into the first cavity can cool the muffler shell and the muffler plate, thereby being beneficial to maintaining the silencing performance of the muffler plate.
Description
Technical Field
The utility model relates to the field of silencers, in particular to a middle-low frequency silencer of a centrifugal fan and a using method thereof.
Background
The muffler means that for the air flow pipeline with noise transmission, the noise in the pipeline can be attenuated or reflected back by using the pipeline with sound absorption lining and elbow or using the noise reduction devices such as the pipeline with suddenly changed sectional area and other discontinuous acoustic impedance.
The prior art discloses the utility model patent in the aspect of partial muffler, chinese utility model patent with the application number of cn201020225270.X discloses a middle-low pressure centrifugal fan muffler, which comprises a housing, the housing is hollow structure, be connected with two first sound-deadening sheets placed from top to bottom and two second sound-deadening sheets placed from top to bottom on the shells inner wall, the front and back both ends of every first sound-deadening sheet and every second sound-deadening sheet are all inlayed in the inner wall of casing, two second sound-deadening sheets set up between two first sound-deadening sheets, the one end of every first sound-deadening sheet and every second sound-deadening sheet is convex, the thickness of second sound-deadening sheet is thicker than the thickness of first sound-deadening sheet, the both ends are all connected with the transition body about the casing.
At present, when the centrifugal fan muffler is used, due to the fact that the use of the fan has certain timeliness, when the fan is not used for a long time, the situation that a large amount of floating ash falls into on the muffler plate often exists, when the muffler is used next time, the situation that a large amount of floating ash is blown out of the centrifugal fan body in the environment can be caused, and secondly, the muffler can also generate certain heat in the noise reduction process, and further the cooling efficiency of the fan to the environment is reduced.
Disclosure of Invention
The utility model aims to solve the defects in the prior art, and provides a middle-low frequency silencer of a centrifugal fan and a using method thereof.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
in a first aspect, a low-and-medium frequency muffler for a centrifugal fan includes:
the silencer comprises a silencer shell, wherein a plurality of inclined silencing plates are fixedly connected in the silencer shell at equal intervals;
the sealing plate mechanism is arranged at the air outlet of the muffler shell;
the auxiliary noise reduction mechanism is arranged on the muffler shell;
in the muffler shell working process, the auxiliary noise reduction mechanism can cool and reduce noise of the muffler shell and the muffler plate, and in the muffler shell stop working process, the auxiliary noise reduction mechanism is matched with the sealing plate mechanism to clean the muffler plate inside the muffler shell.
Preferably, the auxiliary noise reduction mechanism comprises a first chamber and a second chamber, the first chamber and the second chamber are both arranged on the inner wall of the muffler shell, the first chamber is arranged on the inner side of the second chamber, an air bag I is fixedly connected in the second chamber, a vertical rod is fixedly connected to the bottom surface of the air outlet of the muffler shell, a water supply tank is arranged below the air outlet of the muffler shell, the lower part of the vertical rod is inserted into the water supply tank, and a water supply assembly and a gas supply assembly are arranged on the bottom surface of the air outlet of the muffler shell.
Preferably, the sealing plate mechanism comprises two mounting seats, the two mounting seats are symmetrically and fixedly connected to the bottom of the air outlet of the muffler shell, the two mounting seats are respectively and rotatably connected with an electric rotating shaft I, and the two electric rotating shafts I are respectively and fixedly connected with a sealing plate.
Preferably, the water supply assembly includes: the water supply pipe and the water pump, delivery pipe fixed connection is in the montant, the delivery pipe runs through the bottom of montant, water pump fixed connection is in silencer casing's bottom, the water inlet end fixed intercommunication of water pump has water pipe one, water pipe one keep away from behind the one end of water pump runs through behind the lateral wall of montant with the upper end fixed intercommunication of delivery pipe, the play water end fixed intercommunication of water pump has water pipe two, water pipe two keep away from the one end fixed intercommunication of water pump has the conveyer pipe, and the one end intercommunication that the conveyer pipe kept away from water pipe two is in the interior top of cavity one, the conveyer pipe runs through in proper order from water pipe two to cavity bottom of silencer casing, cavity one and acoustical panel, silencer casing's bottom fixedly connected with back flow, the upper end of back flow runs through behind the bottom of silencer casing and the bottom of cavity one, the lower extreme of water pump is inserted in the supply tank, fixedly connected with solenoid valve on the back flow, silencer casing is close to the inside air inlet side wall of back flow pipe one end setting up the back flow.
Preferably, the air supply assembly comprises a supporting seat, a second mounting groove and a second air pipe, the supporting seat is fixedly connected to the side wall of the vertical rod, the second air pipe is fixedly connected to the inside of the vertical rod, the upper end of the second air pipe penetrates through the top surface of the vertical rod and the bottom surface of the silencer shell and then is fixedly communicated with the first air bag, the second mounting groove is formed in the upper surface of the supporting seat, an air pump is fixedly connected to the second mounting groove, the supporting seat is far away from one end of the vertical rod and is fixedly connected with the second air bag, the supporting seat is far away from one end side wall of the vertical rod and is symmetrically provided with the first two mounting grooves, the first air pipe is far away from one end of the air pump and is fixedly communicated with the second air bag, an electromagnetic three-way valve is fixedly communicated with the upper portion of the air pump, a second pipe body and a third pipe body are fixedly communicated with one end of the electromagnetic three-way valve penetrates through the side wall of the vertical rod and then is fixedly communicated with the second air pipe.
Preferably, the cleaning piece comprises two electric rotating shafts II and a plurality of spray pipes, wherein the spray pipes are fixedly connected to the inner wall of one end of the silencer shell close to the air inlet at equal intervals, the spray pipes penetrate through the inner wall of the silencer shell and then are fixedly communicated with the first chamber, the end parts of the spray pipes are fixedly connected with atomizing spray heads, the spray pipes are fixedly connected with pressure valves, the electric rotating shafts II are symmetrically connected to the silencer shell in a rotating mode, baffle plates are fixedly connected to the electric rotating shafts II, and a plurality of turbulence strips are fixedly connected to the side walls of the baffle plates.
Preferably, the inner wall of the air outlet of the muffler shell is fixedly connected with a temperature sensor, and the outer wall of the air outlet of the muffler shell is fixedly connected with a controller.
In a second aspect, a method for using a low-frequency muffler of a centrifugal fan includes the steps of:
the temperature sensor acquires first temperature information;
the temperature sensor generates first request information according to the first temperature information;
the temperature sensor sends first request information to the controller.
Preferably, after receiving the first request information, the controller further includes the following steps:
the controller acquires first request information;
the controller generates first control information and second control information according to the first request information;
the controller sends the first control information to the water pump so as to control the water pump to be turned on;
the controller generates second control information to the solenoid valve to control the solenoid valve to close.
Preferably, after the controller sends the first control information or the second control information to the water feeding pump and the electromagnetic valve, the method further comprises the following steps:
the water pump acquires first control information;
starting a water pump;
the electromagnetic valve acquires second control information;
the solenoid valve is closed.
Compared with the prior art, the utility model has the following beneficial effects:
according to the utility model, by arranging the auxiliary noise reduction mechanism, on one hand, the weight of the muffler shell can be increased, the muffler shell is not easy to vibrate, and further noise generated by the vibration of the muffler shell is reduced, on the other hand, the cooling water pumped into the first cavity can cool the muffler shell and the muffler plate, the water can absorb certain sound and vibration, and the water absorbs the sound and vibration, so that the noise reduction performance of the muffler plate is maintained.
According to the utility model, the air supply assembly is arranged, so that the shrinkage and the suffocation of the first air bag are facilitated, the protrusion of the first air bag from the end part of the second cavity is avoided, and the second air bag is expanded to be contacted with the sealing plate after receiving the pumped air, so that the vibration of the sealing plate is slowed down, and the noise is reduced.
According to the utility model, the cleaning piece is arranged, the pressure valve is opened after the water pressure reaches a certain degree, water in the first chamber is atomized and sprayed on the silencing plate through the atomizing nozzle, and dust on the silencing plate is cleaned.
Drawings
FIG. 1 is a flow chart of a temperature sensor trigger controller of the present utility model;
FIG. 2 is a schematic view of a first view of the structure of the present utility model;
FIG. 3 is a schematic view of a second view of the structure of the present utility model;
FIG. 4 is a schematic structural view of a muffler shell according to the present utility model;
FIG. 5 is a schematic view of a partial structure of a muffler shell according to the present utility model;
FIG. 6 is a partial structural cross-sectional view of the muffler shell of the present utility model;
FIG. 7 is a schematic view of a baffle structure according to the present utility model;
FIG. 8 is a schematic view of the seal plate and mounting base structure of the present utility model in an exploded view;
FIG. 9 is a schematic view of the bottom structure of the muffler shell of the present utility model;
FIG. 10 is a schematic view of a partial structure of a vertical rod according to the present utility model;
FIG. 11 is a schematic view of an atomizer of the present utility model;
FIG. 12 is a schematic diagram of the connection of the air pump and the electromagnetic three-way valve according to the present utility model;
fig. 13 is a schematic diagram showing the connection of the muffler and the centrifugal fan body according to the present utility model.
In the figure: 1. a muffler housing; 2. a muffler plate; 3. a first chamber; 4. a second chamber; 5. an air bag I; 6. a mounting base; 7. an electric rotating shaft I; 8. a sealing plate; 9. a vertical rod; 10. a support base; 11. a first mounting groove; 12. a magnet; 13. a second mounting groove; 14. an air pump; 15. a first air pipe; 16. an electromagnetic three-way valve; 17. a second pipe body; 18. a third pipe body; 19. a second air pipe; 20. an air bag II; 21. a water supply pipe; 22. a water pump; 23. a first water pipe; 24. a second water pipe; 25. a delivery tube; 26. a spray pipe; 27. an atomizing nozzle; 28. a pressure valve; 29. an electric rotating shaft II; 30. a baffle; 31. turbulence bars; 32. a water supply tank; 33. a temperature sensor; 34. a controller; 35. a return pipe; 36. an electromagnetic valve; 37. a centrifugal fan body.
Detailed Description
The following description is presented to enable one of ordinary skill in the art to make and use the utility model. The preferred embodiments in the following description are by way of example only and other obvious variations will occur to those skilled in the art.
A medium-low frequency muffler of a centrifugal fan as shown in fig. 1 to 13, comprising:
the muffler comprises a muffler shell 1, wherein a plurality of inclined muffler plates 2 are fixedly connected in the muffler shell 1 at equal intervals;
the sealing plate mechanism is arranged at the air outlet of the muffler shell 1;
the auxiliary noise reduction mechanism is arranged on the muffler shell 1.
In the work process of the muffler shell 1, the auxiliary noise reduction mechanism can cool and reduce noise of the muffler shell 1 and the muffler plate 2, and in the stop work process of the muffler shell 1, the auxiliary noise reduction mechanism is matched with the sealing plate mechanism to clean the muffler plate 2 inside the muffler shell 1.
During operation, the existing centrifugal fan body 37 silencer has certain timeliness in the using process of the silencer, when the silencer is not used for a long time, the situation that a large amount of floating ash falls on the silencer plate 2 tends to exist, when the silencer is used next time, the situation that a large amount of dust is blown out of the silencer body 37 in the environment occurs, secondly, the silencer can generate certain heat in the noise reduction process, and further the cooling efficiency of the silencer on the environment is reduced.
As one implementation mode of the utility model, the auxiliary noise reduction mechanism comprises a first chamber 3 and a second chamber 4, wherein the first chamber 3 and the second chamber 4 are both arranged on the inner wall of the muffler shell 1, the first chamber 3 is arranged on the inner side of the second chamber 4, an air bag 5 is fixedly connected in the second chamber 4, a vertical rod 9 is fixedly connected to the bottom surface of an air outlet of the muffler shell 1, a water supply tank 32 is arranged below the air outlet of the muffler shell 1, the lower part of the vertical rod 9 is inserted into the water supply tank 32, and a water supply assembly and an air supply assembly are arranged on the bottom surface of the air outlet of the muffler shell 1.
During operation, cooling water is contained in the water supply tank 32, during operation of the muffler shell 1, the water supply assembly pumps the cooling water in the water supply tank 32 into the first cavity 3, on one hand, weight of the muffler shell 1 can be increased, in the prior art, if the muffler vibrates, the muffler can generate certain noise, therefore, through increasing the weight of the muffler shell 1, the difficulty of vibration of the muffler shell 1 is improved, the noise generated by vibration of the muffler shell 1 is reduced, the muffler shell 1 is not easy to vibrate, and the noise generated by vibration of the muffler shell 1 is reduced, on the other hand, the cooling water pumped into the first cavity 3 can cool the muffler shell 1 and the muffler plate 2, the water can absorb certain sound and vibration, and the sound and vibration are absorbed by the water, so that the silencing performance of the muffler plate 2 is maintained;
in the working process of the muffler shell 1 and the muffler plate 2, the air supply assembly can maintain the air pressure stability in the first air bag 5, is favorable for the sound absorption and noise reduction performance maintained by the first air bag 5, and is favorable for reducing the propagation and diffusion of noise in the muffler plate 2.
In the working process of the muffler shell 1 and the muffler plate 2, the vertical rods 9 are inserted into the water supply tank 32, so that the vibration of the vertical rods 9 is slowed down through cooling water, and the noise generated by the vibration of the muffler shell 1 is slowed down.
As one implementation mode of the utility model, the sealing plate mechanism comprises two mounting seats 6, the two mounting seats 6 are symmetrically and fixedly connected to the bottom of an air outlet of the muffler shell 1, the two mounting seats 6 are respectively and rotatably connected with an electric rotating shaft I7, and sealing plates 8 are jointly and fixedly connected to the two electric rotating shafts I7.
During operation, the silencer casing 1 is installed on the centrifugal fan body 37, in the non-working process of the silencer casing 1, the sealing plate 8 can be driven by the first electric rotating shaft 7 to seal the air inlet of the silencer casing 1, sealing of the silencer casing 1 is facilitated, dust is reduced to be absorbed on the silencer casing 1 and the silencer plate 2 in the silencer casing 1, blowing out of a large amount of dust from the silencer casing 1 during operation of the centrifugal fan body 37 is avoided, and in the using process of the silencer casing 1, the sealing plate 8 can be driven by the first electric rotating shaft 7 to remove sealing of the air inlet of the silencer casing 1, so that the silencer casing 1 can be used normally.
As one embodiment of the present utility model, the water supply assembly includes a water supply pipe 21 and a water pump 22, the water supply pipe 21 is fixedly connected in the vertical rod 9, the lower end of the water supply pipe 21 penetrates through the bottom end of the vertical rod 9, the water pump 22 is fixedly connected to the bottom of the muffler shell 1, the water inlet end of the water pump 22 is fixedly connected with a first water pipe 23, one end of the first water pipe 23, which is far away from the water pump 22, penetrates through the side wall of the vertical rod 9 and then is fixedly connected with the upper end of the water supply pipe 21, the water outlet end of the water pump 22 is fixedly connected with a second water pipe 24, one end of the second water pipe 24, which is far away from the water pump 22, is fixedly connected with a conveying pipe 25, one end of the conveying pipe 25, which is far away from the second water pipe 24, is connected to the inner top of the chamber 3, the conveying pipe 25 penetrates through the bottom of the muffler shell 1, the bottom of the chamber 2, the bottom of the chamber 3 and the muffler plate 2 in turn, the bottom of the muffler shell 1 is fixedly connected with a return pipe 35, the upper end of the return pipe 35 penetrates through the bottom of the muffler shell 1 and the bottom of the chamber 4 and then is fixedly connected to the bottom of the chamber 3, the lower end of the return pipe 35 is inserted in the water tank 32, the return pipe 35 is fixedly connected with the end of the return pipe 24, the return pipe 36, and the end of the return pipe 1 is fixedly connected to the muffler 1, and the electromagnetic valve is provided near the inner side wall of the muffler inlet.
During operation, the water pump 22 is started, the water pump 22 pumps cooling water in the water supply tank 32 into the conveying pipe 25 through the water supply pipe 21, flows to the upper part of the first chamber 3 through the conveying pipe 25, and flows back into the water supply tank 32 through the return pipe 35, so that on one hand, the muffler shell 1 and the muffler plate 2 are cooled down, the silencing performance of the muffler plate 2 is maintained, on the other hand, the cooling water in the first chamber 3 is pumped into, the weight of the muffler shell 1 can be increased, the muffler shell 1 is not easy to vibrate, and noise generated by vibration of the muffler shell 1 is reduced.
Meanwhile, in the working process of the muffler shell 1 and the muffler plate 2, the cooling water flowing in the conveying pipe 25 can cool down the muffler plate 2, so that the muffler plate 2 is favorable for maintaining the silencing performance.
As one implementation mode of the utility model, the air supply assembly comprises a supporting seat 10, a second mounting groove 13 and an air pipe 19, wherein the supporting seat 10 is fixedly connected to the side wall of the vertical rod 9, the air pipe 19 is fixedly connected in the vertical rod 9, the upper end of the air pipe 19 penetrates through the top surface of the vertical rod 9 and the bottom surface of the muffler shell 1 and then is fixedly communicated with the first air bag 5, the second mounting groove 13 is formed in the upper surface of the supporting seat 10, an air pump 14 is fixedly connected in the second mounting groove 13, one end, far away from the vertical rod 9, of the supporting seat 10 is fixedly connected with the second air bag 20, two first mounting grooves 11 are symmetrically formed in the side wall of one end, far away from the vertical rod 9, of the supporting seat 10, magnets 12 are fixedly connected in the two first mounting grooves 11, an air pipe 15 is fixedly communicated on the air pump 14, one end, far away from the air pump 14, is fixedly communicated with the second air bag 20, the upper part of the air pump 14 is fixedly communicated with an electromagnetic three-way valve 16, a pipe body 17 and a pipe body three 18 are fixedly communicated with the electromagnetic three-way valve 16, one end, far away from the electromagnetic three-way valve 16, penetrates through the side wall of the vertical rod 9 and then is fixedly communicated with the air pipe 19.
During operation, at the in-process that silencer casing 1 did not work, shrouding 8 shutoff to silencer casing 1's air outlet, under the cooperation of gasbag one 5, be favorable to increasing shrouding 8 to silencer casing 1's degree of sealing, do benefit to and avoid the dust accumulation on noise elimination board 2, when silencer casing 1 needs to work, shrouding 8 drives through electric pivot one 7 and opens, shrouding 8 and magnet 12 contact, magnet 12 can attract shrouding 8, be favorable to improving shrouding 8's stability, be favorable to avoiding shrouding 8 to appear rocking the condition that vibrates and lead to the noise.
In the normal process of the muffler shell 1, the muffler shell 1 and the muffler plate 2 generate heat, the first air bag 5 expands, the first air bag 5 protrudes from the end of the second chamber 4, the air pump 14 can be started, the electromagnetic three-way valve 16 controls the third pipe 18 to be in a communication state with the first air pipe 15, the air pump 14 pumps the air in the first air bag 5 into the second air bag 20 through the third pipe 18 and the second air pipe 19, the second air bag 20 expands, on one hand, shrinkage and changing of the first air bag 5 are facilitated, on the other hand, the first air bag 5 protrudes from the end of the second chamber 4, on the other hand, the second air bag 20 contacts with the sealing plate 8 in the process of controlling the sealing plate 8 to rotate and open after the second air bag 20 expands, the sealing plate 8 is facilitated to be prevented from being impacted on the supporting seat 10, the vibration of the sealing plate 8 is facilitated to be slowed down, and the noise is further reduced.
When the sealing plate 8 is used for sealing the muffler shell 1 again, the air in the air bag two 20 can be pumped into the air bag one 5 again through the air pump 14.
Meanwhile, when the first air bag 5 is in the condition of air deficiency and suffocation, the second pipe body 17 and the third pipe body 18 can be controlled through the electromagnetic three-way valve 16, and the air pump 14 can pump external air into the first air bag 5, so that the air in the first air bag 5 can be supplemented.
As one implementation mode of the utility model, the cleaning piece comprises two electric rotating shafts II 29 and a plurality of spray pipes 26, the spray pipes 26 are fixedly connected to the inner wall of one end of the silencer shell 1 close to the air inlet at equal intervals, the spray pipes 26 penetrate through the inner wall of the silencer shell 1 and are fixedly communicated with the first chamber 3, the end parts of the spray pipes 26 are fixedly connected with atomizing nozzles 27, the spray pipes 26 are fixedly connected with pressure valves 28, the two electric rotating shafts II 29 are symmetrically and rotatably connected to the silencer shell 1, the baffle plates 30 are fixedly connected to the two electric rotating shafts II 29, and the side walls of the baffle plates 30 are fixedly connected with a plurality of turbulence bars 31. The pressure valve 28 is provided with a preset pressure value, and when the water pressure in the first chamber 3 is higher than the preset pressure value, the pressure valve 28 is opened, whereas the pressure valve 28 is closed, which is the prior art and is not disclosed herein too much.
During operation, in the normal working process of the muffler shell 1 and the muffler plate 2, the second electric rotating shaft 29 drives the baffle 30 to rotate to be in a parallel state with the muffler shell 1, so that air in the centrifugal fan body 37 is facilitated to enter the muffler shell 1, and in the process that air in the centrifugal fan body 37 enters the muffler shell 1, the turbulence strips 31 can play a role in turbulence, so that mutual cancellation of noise is facilitated, and further noise elimination is facilitated.
In the non-working process of the centrifugal fan body 37, the baffle 30 can be driven by the electric rotating shaft II 29 to plug the air inlet of the muffler shell 1, then the electromagnetic valve 36 is used for plugging the return pipe 35, then the water pump 22 pumps water into the first chamber 3, the pressure valve 28 is opened after the water pressure reaches a certain degree, the water in the first chamber 3 is atomized and sprayed on the muffler plate 2 through the atomizing nozzle 27, dust on the muffler plate 2 is cleaned, and meanwhile, due to the inclined arrangement of the muffler plate 2, water drops sprayed on the muffler plate 2 are facilitated to flow, and the dust cleaning effect is further improved.
As an embodiment of the present utility model, the inner wall of the air outlet of the muffler housing 1 is fixedly connected with a temperature sensor 33, and the outer wall of the air outlet of the muffler housing 1 is fixedly connected with a controller 34.
The application method of the medium-low frequency muffler of the centrifugal fan comprises the following steps:
the temperature sensor 33 acquires first temperature information;
the temperature sensor 33 generates first request information from the first temperature information;
the temperature sensor 33 sends the first request information to the controller 34;
when the ambient temperature is higher than the temperature preset value, the temperature sensor 33 acquires the first temperature information at this time, and then the temperature of the environment is reduced by the controller 34.
After receiving the first request message, the controller 34 further includes the following steps:
the controller 34 acquires the first request information;
the controller 34 generates first control information and second control information according to the first request information;
the controller 34 transmits the first control information to the water pump 22 to control the water pump 22 to be turned on;
the controller 34 generates second control information to the solenoid valve 36 to control the solenoid valve 36 to close.
Wherein, the controller 34 is provided with a temperature preset value, the temperature preset value is forty degrees celsius, and the basis for generating the first control information and the second control information is: when the temperature fed back by the first temperature information is higher than forty degrees celsius, the controller 34 generates the first control information and the second control information.
The controller 34 is opened through controlling the water pump 22, and the control solenoid valve 36 is closed, and the rivers that the water pump 22 output can flow into cavity one 3, because solenoid valve 36 is closed, consequently the water pressure in cavity one 3 rises, when the water pressure exceeds the pressure default of pressure valve 28, atomizer 27 sprays rivers, atomizer 27 sprays the water smoke after atomizing, can be blown in the surrounding environment by the wind that centrifugal fan body 37 bloied, realize the cooling effect to the environment through the evaporation of atomizing rivers, and then reach the purpose of cooling down to the local environment around the centrifugal fan body 37, secondly, the rivers that atomizer 27 sprayed also can cool down to sound-absorbing plate 2, be favorable to the temperature of sound-absorbing plate 2 to lead to follow-up air current to rise because of the high temperature. After the muffler housing 1 is closed, when the muffler plate 2 inside the muffler housing 1 needs to be cleaned, the muffler plate 2 may also be cleaned by closing the baffle 30, the closing plate 8, and the solenoid valve 36, and then by turning on the water pump 22, through the atomizing nozzle 27.
The water pump 22 can be turned on by an external switch in addition to the controller 34, which is known in the art and not disclosed herein.
The controller 34 transmits the first control information or the second control information to the feed pump 22 and the solenoid valve 36, and then further includes the steps of:
the water pump 22 acquires first control information;
the water pump 22 is started;
the solenoid valve 36 acquires second control information;
the solenoid valve 36 is closed.
The specific control process is as follows: the temperature sensor 33 acquires the first temperature information, the temperature sensor 33 generates first request information according to the first temperature information, the temperature sensor 33 sends the first request information to the controller 34, the controller 34 acquires the first request information, the controller 34 generates first control information and second control information according to the first request information, the controller 34 sends the first control information to the water pump 22 to control the water pump 22 to be opened, the controller 34 sends the second control information to the electromagnetic valve 36 to control the electromagnetic valve 36 to be closed, the water pump 22 acquires the first control information, the water pump 22 is started, the electromagnetic valve 36 acquires the second control information, and the electromagnetic valve 36 is closed.
The working principle of the utility model is as follows: before the centrifugal fan body 37 works, the electric rotating shaft II 29 is started, the electric rotating shaft II 29 drives the baffle 30 to rotate to be in a parallel state with the silencer shell 1, air in the centrifugal fan body 37 is facilitated to enter the silencer shell 1, and in the process that the air in the centrifugal fan body 37 enters the silencer shell 1, the turbulence strips 31 can play a role in turbulence, mutual cancellation of noise is facilitated, and further noise elimination is facilitated.
The first electric rotating shaft 7 is started, the first electric rotating shaft 7 drives the sealing plate 8 to remove the blocking at the air inlet of the silencer casing 1, so that the silencer casing 1 can be used normally, after the sealing plate 8 rotates to be in contact with the magnet 12, the magnet 12 can attract the sealing plate 8, the stability of the sealing plate 8 is improved, and the situation that the sealing plate 8 shakes and vibrates to cause noise is avoided.
When the centrifugal fan body 37 works, the vibration of the air flow generates noise, the muffler shell 1 and the muffler plate 2 carry out noise reduction treatment on the air flow, meanwhile, in the working process of the muffler shell 1 and the muffler plate 2, the first air bag 5 can play a role in sound insulation and noise reduction, the propagation of noise is restrained, and the noise reduction purpose is achieved by the mode of noise propagation inhibition.
In the working process of the muffler shell 1 and the muffler plate 2, the muffler shell 1 and the muffler plate 2 generate heat due to friction with air flow, the water pump 22 is started, the electromagnetic valve 36 is opened, the water pump 22 pumps cooling water in the water supply tank 32 into the first chamber 3 and flows back into the water supply tank 32 from the return pipe 35, so that the muffler plate 2 and the muffler shell 1 are cooled, and overheating of the muffler shell 1 and the muffler plate 2 is avoided;
meanwhile, cooling water is pumped into the first cavity 3, so that the weight of the muffler shell 1 can be increased, the muffler shell 1 is not easy to vibrate, and noise generated by the vibration of the muffler shell 1 is reduced;
while cooling water is drawn into the first chamber 3, liquid water can reduce the spread and diffusion of noise.
In the working process of the muffler shell 1 and the muffler plate 2, the heat generated by the muffler shell 1 and the muffler plate 2 can cause the first air bag 5 to expand, the first air bag 5 protrudes from the end part of the second chamber 4, the air pump 14 can be started, the electromagnetic three-way valve 16 controls the third pipe 18 to be in a communicating state with the first air pipe 15, the air pump 14 pumps the air in the first air bag 5 into the second air bag 20 through the third pipe 18 and the second air pipe 19, on one hand, the shrinkage and the changing of the first air bag 5 are facilitated, the protrusion of the first air bag 5 from the end part of the second chamber 4 is avoided, on the other hand, the second air bag 20 receives the pumped air and then expands to be in contact with the sealing plate 8, the vibration of the sealing plate 8 is facilitated to be slowed down, and the noise is further reduced.
When the sealing plate 8 is used for sealing the muffler shell 1 again, the air in the air bag two 20 can be pumped into the air bag one 5 again through the air pump 14.
Meanwhile, when the first air bag 5 is in the condition of air deficiency and suffocation, the second pipe body 17 and the third pipe body 18 can be controlled through the electromagnetic three-way valve 16, and the air pump 14 can pump external air into the first air bag 5, so that the air in the first air bag 5 can be supplemented.
After the centrifugal fan body 37 stops working, when the muffler plate 2 needs to be cleaned, the electric rotating shaft II 29 can be started, the electric rotating shaft II 29 drives the baffle 30 to close the air inlet of the muffler shell 1, then the electromagnetic valve 36 is closed, the water pump 22 is started, water is pumped into the cavity I3 through the water pump 22, the pressure valve 28 is opened after the water pressure reaches a certain degree, water in the cavity I3 is atomized and sprayed on the muffler plate 2 through the atomizing nozzle 27, dust on the muffler plate 2 is cleaned, and meanwhile, due to the inclined arrangement of the muffler plate 2, water drops sprayed on the muffler plate 2 flow, and the dust cleaning effect is further improved.
The foregoing has shown and described the basic principles, principal features and advantages of the utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made therein without departing from the spirit and scope of the utility model, which is defined by the appended claims.
Claims (4)
1. A low-and-medium frequency muffler for a centrifugal fan, comprising:
the silencer comprises a silencer shell (1), wherein a plurality of inclined silencing plates (2) are fixedly connected in the silencer shell (1) at equal intervals;
the sealing plate mechanism is arranged at the air outlet of the silencer shell (1);
the auxiliary noise reduction mechanism is arranged on the muffler shell (1);
in the working process of the muffler shell (1), the auxiliary noise reduction mechanism can cool and reduce noise of the muffler shell (1) and the muffler plate (2), and in the working process of the muffler shell (1) stopping, the auxiliary noise reduction mechanism is matched with the sealing plate mechanism to clean the muffler plate (2) in the muffler shell (1);
the auxiliary noise reduction mechanism comprises a first chamber (3) and a second chamber (4), wherein the first chamber (3) and the second chamber (4) are both arranged on the inner wall of the muffler shell (1), the first chamber (3) is arranged on the inner side of the second chamber (4), an air bag I (5) is fixedly connected in the second chamber (4), a vertical rod (9) is fixedly connected to the bottom surface of an air outlet of the muffler shell (1), a water supply tank (32) is arranged below the air outlet of the muffler shell (1), the lower part of the vertical rod (9) is inserted into the water supply tank (32), and a water supply assembly and an air supply assembly are arranged on the bottom surface of the air outlet of the muffler shell (1);
the sealing plate mechanism comprises two mounting seats (6), the two mounting seats (6) are symmetrically and fixedly connected to the bottom of an air outlet of the silencer shell (1), the two mounting seats (6) are respectively and rotatably connected with an electric rotating shaft I (7), and sealing plates (8) are fixedly connected to the two electric rotating shafts I (7) together;
the water supply assembly includes: the water supply pipe (21) and the water pump (22), the water supply pipe (21) is fixedly connected in the vertical rod (9), the water supply pipe (21) penetrates through the bottom end of the vertical rod (9), the water pump (22) is fixedly connected to the bottom of the first muffler shell (1), the water inlet end of the water pump (22) is fixedly connected with a first water pipe (23), one end of the first water pipe (23) far away from the water pump (22) penetrates through the side wall of the vertical rod (9) and then is fixedly connected with the upper end of the water supply pipe (21), the water outlet end of the water pump (22) is fixedly connected with a second water pipe (24), one end of the second water pipe (24) far away from the water pipe (22) is fixedly connected with a conveying pipe (25), one end of the conveying pipe (25) far away from the second water pipe (24) is connected to the inner top of the first muffler shell (3), the conveying pipe (25) sequentially penetrates through the bottom of the first muffler shell (1), the bottom of the second muffler shell (4), the bottom of the first muffler shell (3) and the bottom of the first muffler shell (3) are fixedly connected with the bottom of the second muffler shell (35) and the bottom of the first muffler shell (35), the lower end of the return pipe (35) is inserted into the water supply tank (32), an electromagnetic valve (36) is fixedly connected to the return pipe (35), and a cleaning piece is arranged on the inner side wall of one end, close to the air inlet, of the muffler shell (1);
the cleaning piece comprises two electric rotating shafts II (29) and a plurality of spray pipes (26), wherein the spray pipes (26) are fixedly connected to the inner wall of one end, close to an air inlet, of the silencer shell (1), the spray pipes (26) penetrate through the inner wall of the silencer shell (1) and then are fixedly communicated with the first chamber (3), atomizing nozzles (27) are fixedly connected to the end parts of the spray pipes (26), pressure valves (28) are fixedly connected to the spray pipes (26), the two electric rotating shafts II (29) are symmetrically connected to the silencer shell (1) in a rotating mode, baffle plates (30) are fixedly connected to the two electric rotating shafts II (29), and a plurality of turbulence bars (31) are fixedly connected to the side walls of the baffle plates (30);
the inner wall of the air outlet of the silencer shell (1) is fixedly connected with a temperature sensor (33), and the outer wall of the air outlet of the silencer shell (1) is fixedly connected with a controller (34);
the air supply assembly comprises a supporting seat (10), a mounting groove II (13) and an air pipe II (19), wherein the supporting seat (10) is fixedly connected to the side wall of the vertical rod (9), the air pipe II (19) is fixedly connected to the side wall of the vertical rod (9), the upper end of the air pipe II (19) penetrates through the top surface of the vertical rod (9) and the bottom surface of the silencer shell (1) and then is fixedly communicated with the air bag I (5), the mounting groove II (13) is formed in the upper surface of the supporting seat (10), an air pump (14) is fixedly connected to the mounting groove II (13), the supporting seat (10) is fixedly connected with an air bag II (20) at one end of the vertical rod (9), the supporting seat (10) is far away from one end side wall of the vertical rod (9), two mounting grooves I (11) are symmetrically formed, two mounting grooves I (11) are respectively fixedly connected with a magnet (12), an air pipe I (15) is fixedly communicated to the air pump (14), an air pipe I (15) is far from the air pump I (14) and an air pump II (16) and an electromagnetic valve (16) are fixedly communicated with one end of the three-way electromagnetic valve (16), one end of the third pipe body (18) far away from the electromagnetic three-way valve (16) penetrates through the side wall of the vertical rod (9) and is fixedly communicated with the second air pipe (19).
2. A method for using a middle-low frequency muffler of a centrifugal fan, which is applicable to the middle-low frequency muffler of the centrifugal fan as claimed in claim 1, and is characterized in that the method comprises the following steps:
the temperature sensor (33) acquires first temperature information;
a temperature sensor (33) generates first request information according to the first temperature information;
the temperature sensor (33) transmits the first request information to the controller (34).
3. The method of using a low-and-medium frequency muffler of a centrifugal fan according to claim 2, wherein after the controller (34) receives the first request message, the method further comprises the steps of:
the controller (34) acquires the first request information;
the controller (34) generates first control information and second control information according to the first request information;
the controller (34) sends first control information to the water pump (22) to control the water pump (22) to be turned on;
the controller (34) generates second control information to the solenoid valve (36) to control the solenoid valve (36) to close.
4. A method of using a low-and-medium frequency muffler for a centrifugal fan according to claim 3, wherein the controller (34) sends the first control information or the second control information to the feed pump (22) and the solenoid valve (36) and further comprises the steps of:
the water pump (22) acquires first control information;
starting the water pump (22);
the electromagnetic valve (36) acquires second control information;
the solenoid valve (36) is closed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311321846.0A CN117052723B (en) | 2023-10-13 | 2023-10-13 | Medium-low frequency muffler of centrifugal fan and application method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311321846.0A CN117052723B (en) | 2023-10-13 | 2023-10-13 | Medium-low frequency muffler of centrifugal fan and application method thereof |
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| Publication Number | Publication Date |
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| CN117052723A CN117052723A (en) | 2023-11-14 |
| CN117052723B true CN117052723B (en) | 2024-01-23 |
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| CN207438017U (en) * | 2017-06-30 | 2018-06-01 | 中国舰船研究设计中心 | A kind of gasbag-type seawaterline silencer |
| CN108194750A (en) * | 2018-01-02 | 2018-06-22 | 美的集团股份有限公司 | A kind of hydraulic pressure fluctuations attenuating device and its appliance water equipment |
| CN110359991A (en) * | 2019-07-10 | 2019-10-22 | 南通翔腾机械有限公司 | A kind of muffler and its production technology having both cooling fire-proof function |
| CN113339293A (en) * | 2021-07-19 | 2021-09-03 | 苏州丰土环保科技有限公司 | Multi-section high-pressure casting belt type fan |
| CN215979912U (en) * | 2021-05-08 | 2022-03-08 | 内蒙古格尔制冷设备有限公司 | Novel semi-closed double-screw compressor |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN207438017U (en) * | 2017-06-30 | 2018-06-01 | 中国舰船研究设计中心 | A kind of gasbag-type seawaterline silencer |
| CN108194750A (en) * | 2018-01-02 | 2018-06-22 | 美的集团股份有限公司 | A kind of hydraulic pressure fluctuations attenuating device and its appliance water equipment |
| CN110359991A (en) * | 2019-07-10 | 2019-10-22 | 南通翔腾机械有限公司 | A kind of muffler and its production technology having both cooling fire-proof function |
| CN215979912U (en) * | 2021-05-08 | 2022-03-08 | 内蒙古格尔制冷设备有限公司 | Novel semi-closed double-screw compressor |
| CN113339293A (en) * | 2021-07-19 | 2021-09-03 | 苏州丰土环保科技有限公司 | Multi-section high-pressure casting belt type fan |
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| Publication number | Publication date |
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| CN117052723A (en) | 2023-11-14 |
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