CN210978005U

CN210978005U - Silencer for centrifugal ventilator

Info

Publication number: CN210978005U
Application number: CN201921919270.7U
Authority: CN
Inventors: 王龙; 王燕; 王衍涛
Original assignee: Qingdao Shuangsheng Fan Equipment Co ltd
Current assignee: Qingdao Shuangsheng Fan Equipment Co ltd
Priority date: 2019-11-08
Filing date: 2019-11-08
Publication date: 2020-07-10
Anticipated expiration: 2029-11-08

Abstract

The utility model discloses a silencer for a centrifugal fan, which relates to the technical field of relevant accessories of ventilators, and comprises a base, a bottom plate and a sound-absorbing box, wherein the sound-absorbing box is welded on the base, the bottom plate is welded on the bottom of the base through a connecting block, a sound-absorbing pipeline is welded in the sound-absorbing box, the inner wall of the sound-absorbing pipeline is provided with a through hole, the through hole is communicated with the sound-absorbing box, sound-absorbing cotton is arranged in the sound-absorbing box, one end of the sound-absorbing pipeline is welded with a connecting ring pipe, the inner wall of the connecting ring pipe is provided with a containing groove, the containing groove is I-shaped, the connecting ring pipe is provided with an adjusting groove and an inflating groove, a connecting groove is arranged between the inflating groove and the containing groove, the adjusting groove is arranged in the middle part of the connecting groove, a sealing bag is adhered on, the silencer has the characteristics of good silencing effect and good sealing effect.

Description

Silencer for centrifugal ventilator

Technical Field

The utility model relates to a relevant accessory technical field of ventilation blower, in particular to silencing device for centrifugal fan.

Background

The centrifugal ventilator is a driven fluid machine which increases the pressure of gas and discharges the gas by means of input mechanical energy. Centrifugal ventilators 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 among air conditioning equipment and the domestic appliance equipment, the stoving and the selection of cereal, wind-tunnel wind regime and the inflation and the propulsion of air cushion ship etc. but present centrifugal fan mostly all has certain not enough, and on the one hand, the great noise of ordinary centrifugal fan production when using thoughtlessly, and on the other hand, the condition of leaking out appears easily in ordinary centrifugal fan pipeline junction, consequently needs a silencing device for centrifugal fan to help solving above-mentioned problem now.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a silencing device for centrifugal fan to the noise that proposes in solving above-mentioned background art is big, the problem of gas leakage appears easily.

In order to achieve the above object, the utility model provides a following technical scheme: a silencer for a centrifugal ventilator comprises a base, a bottom plate and a silencer box, wherein the silencer box is welded on the base, the bottom plate is welded at the bottom of the base through a connecting block, a silencer pipeline is welded in the silencer box, the inner wall of the silencer pipeline is provided with a through hole, the through hole is communicated with the silencer box, sound absorption cotton is arranged in the silencer box, one end of the silencer pipeline is welded with a connecting ring pipe, the inner wall of the connecting ring pipe is provided with a containing groove, the containing groove is I-shaped, the connecting ring pipe is provided with an adjusting groove and an inflating groove, a connecting groove is arranged between the inflating groove and the containing groove, the adjusting groove is arranged in the middle of the connecting groove, the inner wall of the containing groove is bonded with a sealing bag, the inner wall of the adjusting groove is welded with an adjusting rod through a spring, and a circulation hole is arranged in the adjusting rod, the top of the adjusting rod is welded with a pressing head.

Preferably, the top of the adjusting groove is provided with a pressing groove, and the pressing head is clamped in the pressing groove.

Preferably, the distance between the bottom of the pressing head and the top of the adjusting groove is equal to the distance between the circulation hole and the connecting groove.

Preferably, the protruding blocks are welded on two sides of the top of the base, the slow-pressing rods are welded on the bottoms of the protruding blocks, and the connecting rods are welded on two sides of the bottom plate.

Preferably, an accommodating cavity is formed in the connecting rod, and one end of the pressure-relieving rod is arranged in the accommodating cavity.

Preferably, the bottom of the pressure-relieving rod is welded with a baffle, and a second spring is clamped between the baffle and the inner wall of the accommodating cavity.

Preferably, the sides of the bottom plate are provided with mounting holes.

The utility model discloses a technological effect and advantage:

1. when the utility model is used, the ventilator is connected with the connecting ring pipe at one end of the silencing pipe, when the airflow generated by the ventilator passes through the silencing pipe, the sound-absorbing cotton of the silencing box can absorb part of noise, and a spring II is clamped between the baffle at the bottom of the slow compression rod and the inner wall of the accommodating cavity, so that the vibration generated when the ventilator operates can be relieved through the spring II 21, and the noise reduction effect can be achieved;

2. when the connecting ring canal of ventilation blower and amortization pipeline one end is connected, inflate to the sealed bag through the inflator, the sealed bag expands gradually, consequently can wrap up the outside of ventilation blower connecting pipe to can strengthen sealed effect, prevent that the condition of gas leakage from taking place.

Drawings

Fig. 1 is a perspective view of the structure of the present invention.

Fig. 2 is a sectional view of the silencing pipe of the structure of the present invention.

Fig. 3 is a cross-sectional view of the connecting ring pipe of the structure of the present invention.

Fig. 4 is a front view of the adjusting rod of the structure of the present invention.

Fig. 5 is a cross-sectional view of the connecting rod of the structure of the present invention.

In the figure: 1. a base; 2. a base plate; 3. a sound silencing box; 4. a sound-deadening duct; 5. a through hole; 6. sound-absorbing cotton; 7. connecting a ring pipe; 8. an accommodating groove; 9. an adjustment groove; 10. an air inflation groove; 11. connecting grooves; 12. a first spring; 13. an adjusting lever; 14. a flow-through hole; 15. a pressing head; 16. pressing the groove; 17. a raised block; 18. a pressure relief lever; 19. a connecting rod; 20. a baffle plate; 21. a second spring; 22. and (7) installing holes.

Detailed Description

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.

The utility model provides a silencer for centrifugal fan as shown in figures 1-5, which comprises a base 1, a bottom plate 2 and a sound-deadening box 3, wherein the sound-deadening box 3 is welded on the base 1, the bottom plate 2 is welded on the bottom of the base 1 through a connecting block, a sound-deadening pipeline 4 is welded in the sound-deadening box 3, a through hole 5 is arranged on the inner wall of the sound-deadening pipeline 4, the through hole 5 is communicated with the sound-deadening box 3, sound-absorbing cotton 6 is arranged in the sound-deadening box 3, a pressing groove 16 is arranged on the top of an adjusting groove 9, a pressing head 15 is clamped in the pressing groove 16, raised blocks 17 are welded on both sides of the top of the base 1, a slow-pressing rod 18 is welded on the bottom of the raised blocks 17, connecting rods 19 are welded on both sides of the bottom plate 2, a holding cavity is arranged in the connecting

rods

19, 2 avris of bottom plate all is provided with mounting hole 22, the utility model discloses during the use, be connected the ventilation blower with the connection ring canal 7 of 4 one ends of amortization pipeline, when the air current that the ventilation blower produced was through amortization pipeline 4, because be provided with through-hole 5 on the inner wall of amortization pipeline 4, and be provided with in the amortization box 3 and inhale sound cotton 6, consequently can absorb the part noise, because the card is equipped with spring two 21 between the separation blade 20 of depression bar 18 bottom and the inner wall in holding chamber, the vibration that consequently produces when the ventilation blower function can be alleviated through spring two 21, thereby also can play the effect of making an uproar.

Referring to fig. 1, 3 and 4, a connecting collar pipe 7 is welded to one end of a silencing pipe 4, a receiving groove 8 is formed in the inner wall of the connecting collar pipe 7, the receiving groove 8 is in an i-shape, an adjusting groove 9 and an inflating groove 10 are formed in the connecting collar pipe 7, a connecting groove 11 is formed between the inflating groove 10 and the receiving groove 8, the adjusting groove 9 is formed in the middle of the connecting groove 11, a sealing bag is bonded to the inner wall of the receiving groove 8, an adjusting rod 13 is welded to the inner wall of the adjusting groove 9 through a first spring 12, a flow hole 14 is formed in the adjusting rod 13, a pressing head 15 is welded to the top of the adjusting rod 13, the distance between the bottom of the pressing head 15 and the top of the adjusting groove 9 is equal to the distance between the flow hole 14 and the connecting groove 11, when a ventilator is connected to the connecting collar pipe 7 at one end of the silencing pipe 4, the pressing cylinder is connected to the inflating groove 10, a finger is used for, when inflating, gas can get into the sealed bag through connecting groove 11, consequently can inflate in to the sealed bag, and the sealed bag expands gradually, consequently can wrap up the outside of ventilation blower connecting pipe to can strengthen sealed effect, prevent that the condition of gas leakage from taking place.

This practical theory of operation: when the utility model is used, the ventilator is connected with the connecting ring pipe 7 at one end of the silencing pipe 4, when the airflow generated by the ventilator passes through the silencing pipe 4, the through hole 5 is arranged on the inner wall of the silencing pipe 4, and the sound absorption cotton 6 is arranged in the silencing box 3, so that partial noise can be absorbed, and the spring II 21 is clamped between the baffle sheet 20 at the bottom of the slow compression rod 18 and the inner wall of the accommodating cavity, so that the vibration generated when the ventilator operates can be relieved through the spring II 21, and the noise reduction effect can be achieved;

when the ventilation blower is connected with the connecting ring pipe 7 at one end of the silencing pipeline 4, the ventilation blower is connected with the inflating groove 10 through the air cylinder, the pressing head 15 is pressed by fingers, so that the circulation hole 14 on the adjusting rod 13 coincides with the connecting groove 11, when inflating, air can enter the sealing bag through the connecting groove 11, and therefore the air can be inflated into the sealing bag, the sealing bag gradually expands, so that the outer side of the connecting pipe of the ventilation blower can be wrapped, the sealing effect can be enhanced, after the fingers are loosened, the adjusting rod 13 upwards bounces, so that the connecting groove 11 can be plugged, and the occurrence of the gas leakage is prevented.

Finally, it should be noted that: 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 and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.

Claims

1. The utility model provides a silencing device for centrifugal fan, includes base (1), bottom plate (2) and whistle box (3), its characterized in that: the silencer is characterized in that the silencer box (3) is welded on a base (1), the bottom plate (2) is welded on the bottom of the base (1) through a connecting block, a silencing pipeline (4) is welded in the silencer box (3), a through hole (5) is formed in the inner wall of the silencing pipeline (4), the through hole (5) is communicated with the silencer box (3), sound absorption cotton (6) is arranged in the silencer box (3), a circular pipe connecting ring (7) is welded at one end of the silencing pipeline (4), a containing groove (8) is formed in the inner wall of the circular pipe connecting ring (7), the containing groove (8) is in an I shape, an adjusting groove (9) and an inflating groove (10) are formed in the circular pipe connecting ring (7), a connecting groove (11) is formed between the inflating groove (10) and the containing groove (8), and the adjusting groove (9) is arranged in the middle of the connecting groove (11), the inner wall of the containing groove (8) is bonded with a sealing bag, the inner wall of the adjusting groove (9) is welded with an adjusting rod (13) through a spring I (12), a circulation hole (14) is formed in the adjusting rod (13), and the top of the adjusting rod (13) is welded with a pressing head (15).

2. The silencer device for a centrifugal fan according to claim 1, wherein: the top of the adjusting groove (9) is provided with a pressing groove (16), and the pressing head (15) is clamped in the pressing groove (16).

3. The silencer device for a centrifugal fan according to claim 2, wherein: the distance between the bottom of the pressing head (15) and the top of the adjusting groove (9) is equal to the distance between the circulation hole (14) and the connecting groove (11).

4. The silencer device for a centrifugal fan according to claim 1, wherein: the base (1) top both sides all weld have protruding piece (17), protruding piece (17) bottom welding has depression bar (18), bottom plate (2) both sides all weld have connecting rod (19).

5. The silencer device for a centrifugal fan according to claim 4, wherein: an accommodating cavity is formed in the connecting rod (19), and one end of the pressure-relieving rod (18) is arranged in the accommodating cavity.

6. The silencer device for a centrifugal fan according to claim 5, wherein: a blocking piece (20) is welded at the bottom of the pressure-relieving rod (18), and a second spring (21) is clamped between the blocking piece (20) and the inner wall of the containing cavity.

7. The silencer device for a centrifugal fan according to claim 1, wherein: the side edges of the bottom plate (2) are provided with mounting holes (22).