Ventilator silencer with replaceable silencing material

Abstract

The utility model belongs to the technical field of ventilator silencers, and particularly relates to a ventilator silencer with replaceable silencing materials, which comprises an inner barrel and an outer barrel, the outer barrel is sleeved outside the inner barrel, and a silencing cotton barrel is arranged between the inner barrel and the outer barrel. A first flange ring is arranged at one end of the inner cylinder body, and a corresponding second flange ring is fixed on the outer cylinder body; the first flange ring and the second flange ring are connected through a bolt; the other end of the inner barrel is in threaded connection with a mounting ring, and the two end faces of the silencing cotton barrel make contact with the first flange ring and the mounting ring correspondingly; a circle of limiting ring is arranged on the mounting ring, a fixing ring is fixed to the other end of the outer barrel, and a limiting groove matched with the limiting ring is formed in the fixing ring. The inner barrel body and the outer barrel body are fixed only through a bolt at one end; and the other end is limited through the matching of the limiting ring and the limiting groove. And meanwhile, the mounting ring also plays a role in fixing the silencing cotton cylinder.

Description

Technical Field

[0001] The utility model belongs to the technical field of ventilator silencers, and particularly relates to a ventilator silencer with replaceable sound-absorbing materials. Background Technique

[0002] Axial flow ventilators are generally used for ventilation in coal mines or tunnel construction. Ventilators are equipped with silencing devices, which can play a role in noise reduction and reduce the harm to operating personnel. When the axial flow ventilator operates for a long time, dust or moisture will be inhaled at the air inlet, which will weaken the noise reduction effect of the sound-absorbing material in the fan silencer. If users want to have an obvious noise reduction effect again, they need to purchase a new silencer.

[0003] For this reason, the patent application with the patent application number 201510429693.0 discloses a ventilator silencer with replaceable sound-absorbing cotton. This silencer can replace the sound-absorbing cotton. When replacing the sound-absorbing cotton, it is necessary to first loosen the screws at both ends of the large flange and the small flange, and then the inner cylinder can be pulled out for replacing the sound-absorbing cotton. Its installation and disassembly require tightening or loosening the screws at both ends of the large flange and the small flange. The number of screws at both ends is large, which is likely to affect the replacement and installation efficiency. Content of the Utility Model

[0004] In view of the above technical problems, the utility model provides a ventilator silencer with replaceable sound-absorbing materials, which can reduce the number of bolts required and improve the replacement and installation efficiency.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is as follows:

[0006] A ventilator silencer with replaceable sound-absorbing materials, including an inner cylinder and an outer cylinder. The outer cylinder is sleeved outside the inner cylinder, and a sound-absorbing cotton cylinder is arranged between the inner cylinder and the outer cylinder. One end of the inner cylinder is provided with a first flange ring, and a corresponding second flange ring is fixed on the outer cylinder. The first flange ring and the second flange ring are connected by bolts. The other end of the inner cylinder is connected with an installation ring by threads. The two end faces of the sound-absorbing cotton cylinder are respectively in contact with the first flange ring and the installation ring. A limiting ring is arranged on the installation ring, and a fixing ring is fixed at the other end of the outer cylinder. A limiting groove matching with the limiting ring is arranged on the fixing ring.

[0007] The limiting ring is a conical ring; the limiting groove is a conical groove.

[0008] A sheet-type sound-absorbing plate is fixedly connected inside the inner cylinder.

[0009] Both the inner cylinder and the outer cylinder are cylindrical or conical cylinders.

[0010] Two sheet-type sound-absorbing plates are fixedly connected inside the inner cylinder.

[0011] A pair of guide rails are fixedly connected inside the inner cylinder body, and the upper and lower sides of the sheet-type sound-absorbing plate are respectively slidably connected to the corresponding guide rails; a limiting plate is fixed inside the inner cylinder body, and one end of the sheet-type sound-absorbing plate contacts the limiting plate; a push plate is fixedly connected to the other end of the sheet-type sound-absorbing plate, the push plate passes through the inner cylinder body and contacts the mounting ring, and a corresponding through groove is provided on the inner cylinder body, and the push plate is driven to move by the mounting ring.

[0012] Push plates are fixedly connected to both the upper and lower sides of the other end of the sheet-type sound-absorbing plate.

[0013] It further includes a gasket, and the gasket is sleeved outside the inner cylinder body and is located between the push plate and the sound-absorbing cotton cylinder.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0015] The inner cylinder body and the outer cylinder body only need to be fixed by bolts at one end; the other end is limited by the cooperation of the limiting ring and the limiting groove. At the same time, the mounting ring also plays a role in fixing the sound-absorbing cotton cylinder.

[0016] A sheet-type sound-absorbing plate is also provided, which can further improve the sound-absorbing effect; through the structural settings of the guide rail, the limiting plate and the push plate, it can cooperate with the mounting ring, that is, when the mounting ring is tightened, the sound-absorbing cotton cylinder and the sheet-type sound-absorbing plate can be fixed. Description of the Drawings

[0017] Figure 1 is a schematic structural diagram of one direction of the present utility model;

[0018] Figure 2 is a schematic structural diagram of another direction of the present utility model;

[0019] Figure 3 is a semi-sectional structural diagram of the present utility model;

[0020] Figure 4 is Figure 3 a partial enlarged view of A in ;

[0021] Figure 5 is Figure 3 a partial enlarged view of B in ;

[0022] Figure 6 is a schematic exploded structural diagram of the inner cylinder body and the mounting ring of the present utility model;

[0023] Figure 7 is Figure 6 a partial enlarged view of C in ;

[0024] Figure 8 is a schematic structural diagram of one direction of the outer cylinder body of the present utility model;

[0025] Figure 9It is a schematic structural view of the outer cylinder of the present utility model in another direction;

[0026] Wherein: 1 is the inner cylinder, 2 is the outer cylinder, 3 is the sound-absorbing cotton cylinder, 4 is the first flange ring, 5 is the second flange ring, 6 is the bolt, 7 is the mounting ring, 8 is the limiting ring, 9 is the fixing ring, 10 is the limiting groove, 11 is the sheet-type sound-absorbing plate, 12 is the guide rail, 13 is the limiting plate, 14 is the pushing plate, 15 is the through groove, and 16 is the gasket. Specific embodiments

[0027] The technical solutions in the embodiments of the present utility model will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments.

[0028] As Figures 1 - 9 shown, a ventilator silencer with replaceable sound-absorbing material includes an inner cylinder 1 and an outer cylinder 2. The outer cylinder 2 is sleeved outside the inner cylinder 1, and a sound-absorbing cotton cylinder 3 is provided between the inner cylinder 1 and the outer cylinder 2; a first flange ring 4 is provided at one end of the inner cylinder 1, and a corresponding second flange ring 5 is fixed on the outer cylinder 2; the first flange ring 4 and the second flange ring 5 are connected by bolts 6;

[0029] At the other end of the inner cylinder 1, a mounting ring 7 is connected by threads, and both end faces of the sound-absorbing cotton cylinder 3 are in contact with the first flange ring 4 and the mounting ring 7 respectively. That is, after the sound-absorbing cotton cylinder 3 is sleeved outside the inner cylinder 1, the mounting ring 7 can be tightened to fix it.

[0030] A limiting ring 8 is provided on the mounting ring 7, a fixing ring 9 is fixed at the other end of the outer cylinder 2, and a limiting groove 10 matching with the limiting ring 8 is provided on the fixing ring 9.

[0031] During installation, the sound-absorbing cotton cylinder 3 is sleeved outside the inner cylinder 1, and then the mounting ring 7 is tightened; then, the inner cylinder 1 is inserted into the outer cylinder 2 so that the outer cylinder 2 is sleeved outside the inner cylinder 1; finally, the first flange ring 4 and the second flange ring 5 are connected by bolts 6. During the tightening process of the bolts 6, the limiting ring 8 extends into the limiting groove 10; through the cooperation of the limiting groove 10 and the limiting groove 10, the connection between the other ends of the inner cylinder 1 and the outer cylinder 2 is realized.

[0032] During replacement, only the bolts 6 between the first flange ring 4 and the second flange ring 5 need to be removed; after removal, the inner cylinder 1 is pulled out from the outer cylinder; finally, after the mounting plate is removed, the sound-absorbing cotton cylinder 3 is removed for replacement.

[0033] Furthermore, both the inner cylinder 1 and the outer cylinder 2 are cylindrical or conical; specifically selected according to the actual situation.

[0034] Furthermore, the limiting ring 8 is preferably a conical ring, and the limiting groove 10 is preferably a conical groove.

[0035] Furthermore, in order to improve the sound insulation effect, a plate-type sound insulation board 11 is fixedly connected inside the inner cylinder body 1; preferably, two plate-type sound insulation boards 11 are provided.

[0036] Furthermore, in order to facilitate the installation of the plate-type sound insulation board 11, the following installation structure is adopted:

[0037] A pair of guide rails 12 are fixedly connected inside the inner cylinder body 1, and each plate-type sound insulation board 11 corresponds to a pair of guide rails 12. Specifically: the upper and lower sides of the plate-type sound insulation board 11 are respectively slidably connected to the corresponding guide rails 12; a limiting plate 13 is fixedly arranged inside the inner cylinder body 1, and one end of the plate-type sound insulation board 11 contacts the limiting plate 13. A push plate 14 is fixedly connected to the other end of the plate-type sound insulation board 11, the push plate 14 passes through the inner cylinder body 1 and contacts the mounting ring 7, and a corresponding through groove 15 is provided on the inner cylinder body 1.

[0038] During installation, first, the sound-absorbing cotton cylinder 3 is sleeved outside the inner cylinder body 1; then, the plate-type sound insulation board 11 is slidably connected to the guide rails 12, and one end of the plate-type sound insulation board 11 contacts the limiting plate 13; finally, the mounting ring 7 is threadedly connected to the inner cylinder body 1. As the mounting ring 7 is tightened, the mounting ring 7 presses the sound-absorbing cotton cylinder 3 through the push plate 14, thereby fixing both the sound-absorbing cotton cylinder 3 and the plate-type sound insulation board 11.

[0039] Furthermore, in order to improve the fixing effect, push plates 14 are fixedly connected to both the upper and lower sides of the other end of the plate-type sound insulation board 11.

[0040] Furthermore, to prevent the push plate 14 from damaging the sound-absorbing cotton cylinder 3 after the mounting ring 7 is tightened, a gasket 16 is further included. The gasket 16 is sleeved outside the inner cylinder body 1 and is located between the push plate 14 and the sound-absorbing cotton cylinder 3; that is, the push plate 14 contacts the sound-absorbing cotton cylinder 3 through the gasket 16. During installation, first, the sound-absorbing cotton cylinder 3 is sleeved outside the inner cylinder body 1; then, the gasket 16 is sleeved on the inner cylinder body 1, and then the plate-type sound insulation board 11 is slidably connected to the guide rails 12.

[0041] Only the preferred embodiments of the present invention are described in detail above, but the present invention is not limited to the above embodiments.

Claims

1. A fan muffler with replaceable silencing material, characterized in that: The invention comprises an inner cylinder (1) and an outer cylinder (2), wherein the outer cylinder (2) is sleeved outside the inner cylinder (1), and a sound-absorbing cotton cylinder (3) is provided between the inner cylinder (1) and the outer cylinder (2); a first flange ring (4) is provided at one end of the inner cylinder (1), and a corresponding second flange ring (5) is fixed on the outer cylinder (2); the first flange ring (4) and the second flange ring (5) are connected by bolts (6); The other end of the inner cylinder (1) is connected to a mounting ring (7) via a thread, and the two end surfaces of the silencer cotton cylinder (3) are in contact with the first flange ring (4) and the mounting ring (7) respectively; the mounting ring (7) is provided with a circle of limiting ring (8), and the other end of the outer cylinder (2) is fixed with a fixing ring (9), and the fixing ring (9) is provided with a limiting groove (10) that cooperates with the limiting ring (8).

2. A fan muffler with replaceable sound-absorbing material according to claim 1, characterized in that: The limiting ring (8) is a conical ring; and the limiting groove (10) is a conical groove.

3. A fan muffler with replaceable sound-absorbing material according to claim 1, characterized in that: A sheet-type sound-absorbing plate (11) is fixedly connected inside the inner cylinder (1).

4. A fan muffler with replaceable sound-absorbing material according to any one of claims 1 to 3, characterized in that: The inner cylinder (1) and the outer cylinder (2) are both cylinders or conical cylinders.

5. The ventilator muffler with replaceable sound-absorbing material according to claim 3, characterized in that: Two sheet-type sound-absorbing plates (11) are fixedly connected inside the inner cylinder (1).

6. A fan muffler with replaceable sound-absorbing material according to claim 3 or 5, characterized in that: A pair of guide rails (12) are fixedly connected in the inner cylinder (1), and the upper and lower sides of the sheet-type silencer (11) are respectively slidably connected to the corresponding guide rails (12); a limit plate (13) is fixed in the inner cylinder (1), and one end of the sheet-type silencer (11) contacts the limit plate (13); a push plate (14) is fixedly connected to the other end of the sheet-type silencer (11), and the push plate (14) passes through the inner cylinder (1) and contacts the mounting ring (7), and a corresponding through groove (15) is provided on the inner cylinder (1).

7. A fan muffler with replaceable sound-absorbing material according to claim 6, characterized in that: Push plates (14) are fixedly connected to the upper and lower sides of the other end of the sheet-type silencer plate (11).

8. The ventilator muffler with replaceable sound-absorbing material according to claim 6, characterized in that: It also includes a gasket (16), which is sleeved outside the inner cylinder (1) and located between the push plate (14) and the silencer cotton cylinder (3).

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