CN217783872U

CN217783872U - Noise reduction device for boiler induced draft fan

Info

Publication number: CN217783872U
Application number: CN202221468930.6U
Authority: CN
Inventors: 刘建军; 胡祥东
Original assignee: Cecep Chengdu Energy Technology Service Co ltd
Current assignee: Cecep Chengdu Energy Technology Service Co ltd
Priority date: 2022-06-14
Filing date: 2022-06-14
Publication date: 2022-11-11
Anticipated expiration: 2032-06-14

Abstract

The utility model discloses a noise reduction device for a boiler draught fan, which comprises a noise reduction box, wherein the noise reduction box is internally used for installing a draught fan body, and an air inlet of the draught fan body is connected with a boiler; the air outlet of the draught fan body is communicated with the outside, and the air outlet of the draught fan body is hermetically connected with the noise reduction box; the fan noise reduction box is characterized in that a telescopic rod and a heat exchanger are further arranged in the noise reduction box, the heat exchanger is used for dissipating heat inside the box body, the telescopic rod is connected with the draught fan body through a controller, connecting rods are hinged to two sides of the movable end of the telescopic rod, one end, away from the telescopic rod, of each connecting rod is hinged to a push plate, the push plates can be attached to the bottom of the noise reduction box and are in sliding fit with the noise reduction box, ventilation openings are formed in two sides of the noise reduction box, the push plates are used for sealing the ventilation openings, pressure sensors are arranged on the ventilation openings, and the pressure sensors are connected with the heat exchanger through the controller; compared with the prior art, the utility model can reduce the noise of draught fan when the operation to noise abatement is to staff's health harm.

Description

Noise reduction device for boiler draught fan

Technical Field

The utility model relates to a draught fan technical field, concretely relates to boiler draught fan is with falling device of making an uproar.

Background

The induced draft fan is a device which generates negative pressure through the rotation of an impeller and then extracts air from a system (device), and is generally installed at the tail end of a boiler and used for extracting hot flue gas in a hearth.

Induced draft fans are widely used for ventilation, dust exhaust and cooling of factories, mines, tunnels, cooling towers, vehicles, ships and buildings; ventilation and draught of boilers and industrial furnaces; cooling and ventilation in air conditioning equipment and household appliances; drying and selecting grains; wind tunnel wind source and air cushion boat inflation and propulsion. The working principle of the induced draft fan is basically the same as that of a turbine compressor, but the pressure change is not large due to low gas flow rate, and the change of the specific volume of the gas is generally not required to be considered, namely the gas is treated as incompressible fluid.

The draught fan in the prior art can send out a large amount of noises when carrying out induced air work to the boiler, and the noise exists for a long time and can cause the damage to the hearing of the staff who overhauls in the factory.

SUMMERY OF THE UTILITY MODEL

The utility model provides a boiler induced draft fan is with device of making an uproar falls, the purpose is solved current air inlet machine and is in the too big problem of during operation noise.

In order to solve the technical problem, the utility model discloses the technical scheme who adopts is:

a noise reduction device for a boiler induced draft fan comprises a noise reduction box, wherein the noise reduction box is internally used for mounting an induced draft fan body, and an air inlet of the induced draft fan body is connected with a boiler;

the air outlet of the draught fan body is communicated with the outside, and the air outlet of the draught fan body is hermetically connected with the noise reduction box;

still be provided with telescopic link and heat exchanger in the case of making an uproar falls, the heat exchanger is used for dispelling the heat to the box is inside, and the telescopic link passes through controller and this body coupling of draught fan, and the both sides of telescopic link expansion end all articulate has the connecting rod, and the one end that the telescopic link was kept away from to the connecting rod articulates there is the push pedal, and the push pedal can with fall the bottom of the case portion of making an uproar and paste and fall case sliding fit, the both sides of falling the case of making an uproar have the vent, and the push pedal is used for sealing the vent, is provided with pressure sensor on the vent, and pressure sensor passes through the controller is connected with the heat exchanger.

Further optimize, the expansion end of telescopic link is provided with the connecting plate, two connecting rods are articulated with the left and right sides of connecting plate respectively.

Further limited, the telescopic rod is a hydraulic telescopic rod, a pneumatic telescopic rod or an electric telescopic rod.

Further inject, have spacing portion on the vent, pressure sensor sets up in spacing portion, the push pedal is used for laminating with spacing portion.

Further optimize, be provided with sealed the pad on the terminal surface that is close to spacing portion on the push pedal.

Further optimize, be provided with the rubber pad on the up end of connecting plate.

Further optimize, the push pedal passes through sliding assembly and noise reduction box sliding fit.

Further inject, the slip subassembly is including setting up the slide rail in the push pedal bottom and setting up the spout on the noise reduction box, and the push pedal passes through slide rail and spout realization sliding fit with the noise reduction box.

Further inject, slide rail and spout are T type structure.

Further optimize, be provided with the mounting bracket on the noise reduction box, the draught fan body sets up on the mounting bracket.

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

the utility model discloses mainly including the case of making an uproar falls, the incasement portion of making an uproar falls is used for installing the draught fan body, the air intake and the boiler of draught fan body are connected, in the use of reality, the staff is connected draught fan body and boiler, the effect of draught fan body is taken the flue gas in the boiler out, the draught fan body is when out of work, the vent keeps falling the incasement portion of making an uproar and has circulated, make the incasement portion of making an uproar fall dry, after draught fan body work, a large amount of noises can take place for the draught fan body, draught fan work meeting transmitted signal gives the controller this moment, controller control telescopic link extension, along with the extension of telescopic link, the connecting rod of both sides promotes the push pedal respectively and slides to one side of keeping away from the telescopic link, realize making an uproar the sound insulation of making an uproar falling the incasement portion of making an uproar after push pedal and vent sealing connection, the push pedal contacts behind the pressure sensor on the vent, pressure sensor transmitted signal gives the heat exchanger, the heat dissipation is fallen the incasement portion of making an uproar, the benefit that sets up like this can make an uproar and reduce the noise that the during operation production, prevent that too big noise from producing the damage to staff's hearing.

Drawings

In order to more clearly illustrate the technical solution of the embodiments of the present invention, the drawings which are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and that for those skilled in the art, other related drawings can be obtained according to these drawings without inventive efforts.

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a perspective view of the draft fan body of the present invention.

Fig. 3 is a schematic structural diagram of a second embodiment of the present invention.

In the figure, 101-a noise reduction box, 102-a draught fan body, 103-a telescopic rod, 104-a heat exchanger, 105-a connecting rod, 106-a push plate, 107-a ventilation opening, 108-a pressure sensor, 109-a connecting plate, 110-a limiting part, 111-a sealing gasket, 112-a rubber gasket, 113-a sliding rail, 114-a sliding groove, 115-a mounting frame, 116-a mounting frame, 117-a roller, 118-a steel rope, 119-a baffle and 120-a handle.

Detailed Description

The present invention will be further described with reference to the following examples, which are only some, but not all, of the examples of the present invention. Based on the embodiments in the present invention, other embodiments used by those skilled in the art without creative efforts all belong to the protection scope of the present invention.

Example one

Referring to fig. 1 and fig. 2, the embodiment discloses a noise reduction device for a boiler induced draft fan, which includes a noise reduction box 101, wherein the noise reduction box 101 is internally used for installing an induced draft fan body 102, and an air inlet of the induced draft fan body 102 is connected with a boiler;

an air outlet of the induced draft fan body 102 is communicated with the outside, and the air outlet of the induced draft fan body 102 is hermetically connected with the noise reduction box 101;

the noise reduction box 101 is further internally provided with a telescopic rod 103 and a heat exchanger 104, the heat exchanger 104 is used for dissipating heat inside the box body, the telescopic rod 103 is connected with the induced draft fan body 102 through a controller, two sides of the movable end of the telescopic rod 103 are respectively hinged with a connecting rod 105, one end, away from the telescopic rod 103, of the connecting rod 105 is hinged with a push plate 106, the push plate 106 can be attached to the bottom of the noise reduction box 101 and is in sliding fit with the noise reduction box 101, ventilation openings 107 are formed in two sides of the noise reduction box 101, the push plate 106 is used for sealing the ventilation openings 107, a pressure sensor 108 is arranged on the ventilation openings 107, and the pressure sensor 108 is connected with the heat exchanger 104 through the controller;

the utility model discloses mainly include and fall case 101 of making an uproar, fall inside draught fan body 102 that is used for installing of case 101 of making an uproar, the air intake and the boiler of draught fan body 102 are connected, in the actual use, the staff is connected draught fan body 102 and boiler, draught fan body 102's effect is taken the flue gas in the boiler out, draught fan body 102 is when out of work, vent 107 keeps falling the inside circulation of air of case 101 of making an uproar, make and fall the inside drying of case 101 of making an uproar, when draught fan body 102 work after, draught fan body 102 can take place a large amount of noise, draught fan work can transmit signal for the controller this moment, controller control telescopic link 103 extension, along with the extension of telescopic link 103, connecting rod 105 of both sides promotes push pedal 106 respectively and slides to the one side of keeping away from telescopic link 103, realize falling the noise that makes an uproar and making an uproar the sound insulation of making an uproar inside case 101 of making an uproar after push pedal 106 and vent 107 sealing connection, push pedal 106 contacts behind the pressure sensor 108 on vent 107, pressure sensor 108 transmits signal for heat exchanger 104, heat exchanger 104 dispels the heat to the inside of making an uproar, the benefit that can make an uproar so set up can make an uproar can make the noise reduction of making an uproar during the work, the noise reduction of draught fan work, the noise reduction of making an uproar is reduced, the noise production of the staff and is prevented that the noise production damage.

Further preferably, the movable end of the telescopic rod 103 is provided with a connecting plate 109, and the two connecting rods 105 are respectively hinged to the left side and the right side of the connecting plate 109.

Further limited, the telescopic link 103 is the telescopic link 103 that surges, pneumatic telescopic link 103 or electric telescopic link 103, and telescopic link 103 specifically is the telescopic link 103 that surges in this embodiment, and the reason that uses the telescopic link 103 that surges is that the stability of the telescopic link 103 that surges is good.

Further inject, the vent 107 is provided with a limiting part 110, the pressure sensor 108 is arranged on the limiting part 110, the push plate 106 is used for being attached to the limiting part 110, the limiting part 110 is arranged, when the push plate 106 presses the limiting part 110, the limiting part 110 applies a reaction force to the push plate 106, the sealing effect of the noise reduction box 101 is better, and the noise reduction effect of the noise reduction box 101 is better.

Further, a sealing gasket 111 is arranged on the end face, close to the limiting part 110, of the push plate 106, and the sealing gasket 111 is arranged to prevent the push plate 106 from being in hard contact with the limiting part 110, so that the service life of the limiting part 110 can be prolonged.

Further optimize, the push plate 106 is in sliding fit with the noise reduction box 101 through the sliding assembly, so that the sliding friction between the push plate 106 and the noise reduction box 101 can be reduced, and the sliding between the push plate 106 and the noise reduction box 101 is smoother.

Further, the sliding assembly comprises a sliding rail 113 arranged at the bottom of the push plate 106 and a sliding groove 114 arranged on the noise reduction box 101, and the push plate 106 and the noise reduction box 101 are in sliding fit through the sliding rail 113 and the sliding groove 114.

Further inject, slide rail 113 and spout 114 are T type structure, and slide rail 113 and the spout 114 of T type structure can carry on spacingly to push pedal 106 to make the slip of push pedal 106 more stable.

Further optimization, the noise reduction box 101 is provided with a mounting rack 115, the induced draft fan body 102 is arranged on the mounting rack 115, and the induced draft fan body 102 can be more stable in operation due to the arrangement of the mounting rack 115;

further optimize, be provided with rubber pad 112 on the up end of connecting plate 109, in actual use, after telescopic link 103 extends, connecting plate 109 can contact with mounting bracket 115, and the purpose of setting up rubber pad 112 prevents that connecting plate 109 and mounting bracket 115 from taking place hard contact to make mounting bracket 115 take place to damage.

Example two

Referring to fig. 3, the present embodiment is further optimized based on the first embodiment, in the present embodiment, an installation frame 116 is disposed on an air outlet of the induced draft fan body 102, a drum 117 is rotatably disposed inside the installation frame 116, a steel cable 118 is wound on the drum 117, a plurality of baffles 119 are rotatably disposed in the installation frame 116, the plurality of baffles 119 are all connected with the steel cable 118, and a handle 120 is disposed at one end of the drum 117;

in actual use, when the staff need adjust the air output of draught fan air outlet, the staff rotates cylinder 117 through handle 120, the steel cable 118 on cylinder 117 coils the back pulling a plurality of baffles 119 and rotates, thereby control the size of the air output of draught fan body 102 through the angle that opens and shuts of control baffle 119, when draught fan body 102 is out of work, the staff pulls handle 120 and rotates cylinder 117 and then make a plurality of baffles 119 of steel cable 118 drive rotate until a plurality of baffles 119 shield the air intake of draught fan body 102 completely, the benefit of setting up like this can be dustproof to the air intake of draught fan body 102, prevent the inside dust that gets into of draught fan body 102, reduce the frequency of staff to the inside deashing of draught fan body 102, and then reduce staff's work load.

While the preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the following appended claims be interpreted as including the preferred embodiment and all such alterations and modifications as fall within the scope of the invention. The above description is only exemplary of the present invention and should not be taken as limiting, and all changes, equivalents, and improvements made within the spirit and principles of the present invention should be understood as being included in the scope of the present invention.

Claims

1. The utility model provides a boiler induced-draft fan is with device of making an uproar that falls which characterized in that: the boiler noise reduction device comprises a noise reduction box (101), wherein an induced draft fan body (102) is arranged in the noise reduction box (101), and an air inlet of the induced draft fan body (102) is connected with a boiler;

the air outlet of the draught fan body (102) is communicated with the outside, and the air outlet of the draught fan body (102) is hermetically connected with the noise reduction box (101);

still be provided with telescopic link (103) and heat exchanger (104) in case (101) of making an uproar falls, heat exchanger (104) are used for dispelling the heat to the box inside, telescopic link (103) are connected with draught fan body (102) through the controller, the both sides of telescopic link (103) expansion end all articulate there is connecting rod (105), the one end that telescopic link (103) were kept away from in connecting rod (105) articulates there is push pedal (106), push pedal (106) can with fall the case (101) of making an uproar bottom laminating and with fall case (101) sliding fit, the both sides of falling case (101) of making an uproar have vent (107), push pedal (106) are used for sealing vent (107), be provided with pressure sensor (108) on vent (107), pressure sensor (108) pass through the controller is connected with heat exchanger (104).

2. The noise reduction device for the boiler draft fan according to claim 1, wherein: the movable end of the telescopic rod (103) is provided with a connecting plate (109), and the two connecting rods (105) are respectively hinged with the left side and the right side of the connecting plate (109).

3. The noise reduction device for the boiler draft fan according to claim 1, wherein: the telescopic rod (103) is a hydraulic telescopic rod, a pneumatic telescopic rod or an electric telescopic rod.

4. The noise reduction device for the boiler draft fan according to claim 1, wherein: the ventilation opening (107) is provided with a limiting part (110), the pressure sensor (108) is arranged on the limiting part (110), and the push plate (106) is attached to the limiting part (110).

5. The noise reduction device for the boiler draft fan according to claim 4, wherein: a sealing gasket (111) is arranged on the end face, close to the limiting part (110), of the push plate (106).

6. The noise reduction device for the boiler draft fan according to claim 2, wherein: the upper end surface of the connecting plate (109) is provided with a rubber pad (112).

7. The noise reduction device for the boiler draft fan according to claim 1, wherein: the push plate (106) is in sliding fit with the noise reduction box (101) through a sliding assembly.

8. The noise reduction device for the boiler draft fan according to claim 7, wherein: the sliding assembly comprises a sliding rail (113) arranged at the bottom of the push plate (106) and a sliding groove (114) arranged on the noise reduction box (101), and the push plate (106) and the noise reduction box (101) are in sliding fit through the sliding rail (113) and the sliding groove (114).

9. The noise reduction device for the boiler draft fan according to claim 8, wherein: the sliding rail (113) and the sliding groove (114) are both T-shaped structures.

10. The noise reduction device for the boiler draft fan according to claim 1, wherein: the noise reduction box (101) is provided with a mounting frame (115), and the induced draft fan body (102) is arranged on the mounting frame (115).