Combined bell jar with noise reduction function

Abstract

The utility model discloses a combined bell jar with a noise reduction function, which comprises a first conical cover, one end of the first conical cover is provided with a central connecting sleeve, one end of the central connecting sleeve is provided with a second conical cover, and the inner walls of the first conical cover, the second conical cover and the central connecting sleeve are respectively provided with an elastic damping layer. A flannelette noise reduction layer is arranged on the inner wall of the elastic damping layer, an isolation pressing ring is installed in the middle of the flannelette noise reduction layer and the middle of the elastic damping layer, and a locking ring is installed on the outer side of the middle of the center connecting sleeve. Annular noise reduction bases are installed on the outer sides of the two ends of the center connecting sleeve correspondingly, and four sealing rings are arranged between the two annular noise reduction bases and the center connecting sleeve. According to the utility model, combined protection is carried out on transmission parts of equipment, so that the disassembly and assembly difficulty can be reduced while the operation of the equipment is not interfered, and noise and vibration can be conveniently shunted and elastically damped, so that the noise reduction treatment can be effectively realized.

Description

Technical Field

[0001] The utility model relates to the technical field of equipment noise reduction, in particular to a combined bell-shaped cover with a noise reduction function. Background Art

[0002] The transmission components of equipment generate various noises and vibrations during operation, necessitating noise reduction during operation. Equipment noise reduction is a crucial measure to minimize the impact of noise on the environment and personnel. This is primarily achieved through sound absorption, muffler, and insulation technologies. Sound-absorbing materials absorb sound energy and reduce noise transmission. The effectiveness of these materials and structures is related to these materials. Mufflers are primarily used in indoor spaces to reduce noise generated by airflow through equipment, such as inlet and outlet noise or pipe noise from internal combustion engines and ventilators.

[0003] When the existing equipment transmission parts are subjected to vibration reduction, it is inconvenient to wrap the transmission parts, and the vibration cannot be reduced when noise is reduced by sound insulation, so the noise reduction effect is limited; therefore, it does not meet the existing needs. In this regard, we propose a combined bell cover with noise reduction function. Utility Model Content

[0004] The purpose of the present utility model is to provide a combined bell-shaped cover with a noise reduction function, so as to solve the problem raised in the above background technology that it is inconvenient to wrap the transmission parts of the equipment when reducing vibration, and the vibration cannot be reduced when reducing noise by sound insulation, thereby limiting the noise reduction effect.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: a combined bell-shaped cover with a noise reduction function, comprising a first conical cover, one end of which is mounted a central connecting sleeve, one end of which is mounted a second conical cover, an elastic shock-absorbing layer is provided on the inner walls of the first conical cover, the second conical cover and the central connecting sleeve, a flannel noise-reducing layer is provided on the inner wall of the elastic shock-absorbing layer, an isolation pressure ring is installed in the middle of the flannel noise-reducing layer and the elastic shock-absorbing layer, and a locking ring is installed on the outer side of the middle of the central connecting sleeve;

[0006] Annular noise reduction seats are installed on the outer sides of both ends of the central connecting sleeve, four sealing rings are provided between the two annular noise reduction seats and the central connecting sleeve, multiple sound guide tubes are installed on the inner sides of the annular noise reduction seats, a backflow cover is installed at one end of each sound guide tube, multiple shunt tubes are installed on both sides of the sound guide tube, and a noise reduction connecting rod is installed between two adjacent shunt tubes.

[0007] Preferably, a first connecting ring is fixedly mounted on one end of the first conical cover away from the central connecting sleeve, and a second connecting ring is fixedly mounted on one end of the second conical cover away from the central connecting sleeve.

[0008] Preferably, the first conical cover and the second conical cover are fixedly connected to the velvet noise reduction layer through an elastic shock-absorbing layer, and the middle parts of the velvet noise reduction layer and the elastic shock-absorbing layer are fixedly connected to the central connecting sleeve through an isolation pressure ring, and the size of the first connecting ring is larger than that of the second connecting ring.

[0009] Preferably, a plurality of screws are provided on the inner side of the locking ring, the screws pass through the locking ring and the central connecting sleeve and are connected to the isolation pressure ring through threads, and the locking ring and the isolation pressure ring are fixedly connected by the screws.

[0010] Preferably, both ends of the central connecting sleeve are connected to the first conical cover and the second conical cover through threads, and the two annular noise reduction seats are connected to the first conical cover, the second conical cover and the central connecting sleeve through sealing rings.

[0011] Preferably, one end of the sound guide tube passes through the annular noise reduction seat and is inserted into the inner side of the central connecting sleeve. The central connecting sleeve is connected to the interior of multiple sound guide tubes. The sound guide tube is welded and fixed to the annular noise reduction seat. The sound guide tube is connected to the reflux cover plate by threads.

[0012] Preferably, the sound guide tube and the shunt tube are connected by threads, both ends of the noise reduction connecting rod are inserted into the inner sides of two adjacent shunt tubes, the interiors of both ends of the noise reduction connecting rod are filled with sound-absorbing cotton, and the sound guide tube and the annular noise reduction seat are connected through the shunt tube.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] 1. The utility model is a segmented combination of a first conical cover, a second conical cover and a central connecting sleeve, which can be easily disassembled and used. The first conical cover and the second conical cover are respectively fixed to the equipment to be noise-reduced through a first connecting ring and a second connecting ring. The first conical cover transmits and guides noise and vibration, and then the flannel noise reduction layer and the elastic shock-absorbing layer can perform preliminary vibration and noise reduction on the first conical cover, the second conical cover and the central connecting sleeve. The flannel noise reduction layer and the elastic shock-absorbing layer are pressed and fixed by a locking ring and an isolation pressure ring, so as to prevent the flannel noise reduction layer and the elastic shock-absorbing layer from separating from the central connecting sleeve during vibration transmission.

[0015] 2. The utility model can reduce the vibration of the annular noise reduction seat through the sealing ring when the central connecting sleeve transmits vibration. A plurality of diversion pipes are provided on both sides of the sound guide tube, so that the annular noise reduction seat can divert noise through the sound guide tube and the diversion pipe, and the sound guide tube and the annular noise reduction seat are connected through the diversion pipe. The inner sides of both ends of the noise reduction connecting rod are filled with sound-absorbing cotton, so that the noise reduction effect can be effectively achieved through the diversion pipe and the noise reduction connecting rod, and the noise in the annular noise reduction seat can be refluxed through the reflux cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is a front view of the entire utility model;

[0018] Figure 3 It is a schematic cross-sectional structure diagram of the entire utility model;

[0019] Figure 4 For this utility model Figure 3 Schematic diagram of the enlarged structure of area A in the middle;

[0020] Figure 5 It is a schematic diagram of the partial cross-sectional structure of the sound guide tube of the present utility model.

[0021] In the figure: 1. First conical cover; 2. Second conical cover; 3. First connecting ring; 4. Second connecting ring; 5. Locking ring; 6. Annular noise reduction seat; 7. Center connecting sleeve; 8. Isolation pressure ring; 9. Flannel noise reduction layer; 10. Elastic shock-absorbing layer; 11. Sound guide tube; 12. Sealing ring; 13. Backflow cover; 14. Diverter pipe; 15. Noise reduction connecting rod. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0023] See also Figures 1 to 3 , the utility model provides an embodiment: a combined bell-shaped cover with a noise reduction function, comprising a first conical cover 1, one end of the first conical cover 1 is equipped with a center connecting sleeve 7, one end of the center connecting sleeve 7 is equipped with a second conical cover 2, the end of the first conical cover 1 away from the center connecting sleeve 7 is fixedly equipped with a first connecting ring 3, the end of the second conical cover 2 away from the center connecting sleeve 7 is fixedly equipped with a second connecting ring 4, the size of the first connecting ring 3 is larger than the size of the second connecting ring 4, the inner walls of the first conical cover 1, the second conical cover 2 and the center connecting sleeve 7 are provided with an elastic shock-absorbing layer 10, the inner wall of the elastic shock-absorbing layer 10 is provided with a velvet noise reduction layer 9, the noise and vibration are transmitted and diverted through the first conical cover 1, and then the velvet noise reduction layer 9 and the elastic shock-absorbing layer 10 can perform preliminary vibration and noise reduction on the first conical cover 1, the second conical cover 2 and the center connecting sleeve 7;

[0024] An isolation pressure ring 8 is installed in the middle of the velvet noise reduction layer 9 and the elastic shock-absorbing layer 10, and a locking ring 5 is installed on the outer side of the middle of the central connecting sleeve 7. The first conical cover 1 and the second conical cover 2 are fixedly connected to the velvet noise reduction layer 9 through the elastic shock-absorbing layer 10. The middle of the velvet noise reduction layer 9 and the elastic shock-absorbing layer 10 are fixedly connected to the central connecting sleeve 7 through the isolation pressure ring 8. A plurality of screws are provided on the inner side of the locking ring 5. The screws pass through the locking ring 5 and the central connecting sleeve 7 and are threadedly connected to the isolation pressure ring 8. The locking ring 5 is fixedly connected to the isolation pressure ring 8 by screws. The velvet noise reduction layer 9 and the elastic shock-absorbing layer 10 are pressed and fixed by the locking ring 5 and the isolation pressure ring 8, which can prevent the velvet noise reduction layer 9 and the elastic shock-absorbing layer 10 from separating from the central connecting sleeve 7 during vibration transmission.

[0025] See also Figures 3 to 5 , annular noise reduction seats 6 are installed on the outer sides of both ends of the central connecting sleeve 7, four sealing rings 12 are provided between the two annular noise reduction seats 6 and the central connecting sleeve 7, both ends of the central connecting sleeve 7 are connected to the first conical cover 1 and the second conical cover 2 through threads, and the two annular noise reduction seats 6 are connected to the first conical cover 1, the second conical cover 2 and the central connecting sleeve 7 through sealing rings 12. The sealing rings 12 enable the central connecting sleeve 7 to reduce the vibration of the annular noise reduction seats 6 through the sealing rings 12 when transmitting vibration;

[0026] A plurality of sound guide tubes 11 are installed on the inner side of the annular noise reduction seat 6, and a backflow cover 13 is installed on one end of each sound guide tube 11. One end of the sound guide tube 11 passes through the annular noise reduction seat 6 and is plugged into the inner side of the central connecting sleeve 7. The central connecting sleeve 7 is connected to the interior of the plurality of sound guide tubes 11. The sound guide tubes 11 are welded and fixed to the annular noise reduction seat 6. The sound guide tubes 11 are connected to the backflow cover 13 by threads, so that the annular noise reduction seat 6 can divert noise through the sound guide tubes 11 and the diversion tube 14.

[0027] Multiple shunt pipes 14 are installed on both sides of the sound guide tube 11, and a noise reduction connecting rod 15 is installed between two adjacent shunt pipes 14. The sound guide tube 11 and the shunt pipe 14 are connected by threads, and both ends of the noise reduction connecting rod 15 are inserted into the inner side of the two adjacent shunt pipes 14. The interior of both ends of the noise reduction connecting rod 15 is filled with sound-absorbing cotton. The sound guide tube 11 and the annular noise reduction seat 6 are connected through the shunt pipe 14, and the noise reduction effect can be effectively achieved through the shunt pipe 14 and the noise reduction connecting rod 15.

[0028] When in use, the first conical cover 1 and the second conical cover 2 are connected and fixed through the central connecting sleeve 7, so that the elastic shock-absorbing layer 10 and the flannel noise reduction layer 9 are fixed on the inner walls of the first conical cover 1, the second conical cover 2 and the central connecting sleeve 7 in sequence, and the middle parts of the flannel noise reduction layer 9 and the elastic shock-absorbing layer 10 are fixed to the central connecting sleeve 7 through the locking ring 5 and the isolation pressure ring 8. The first conical cover 1, the second conical cover 2 and the central connecting sleeve 7 are combined in sections to facilitate disassembly and use, and the first conical cover 1 and the second conical cover 2 are fixed to the equipment to be noise-reduced through the first connecting ring 3 and the second connecting ring 4 respectively;

[0029] When the power is turned on and the equipment is running, the noise and vibration are transmitted and diverted through the first conical cover 1, and then the flannel noise reduction layer 9 and the elastic shock-absorbing layer 10 can perform preliminary vibration and noise reduction on the first conical cover 1, the second conical cover 2 and the central connecting sleeve 7. The flannel noise reduction layer 9 and the elastic shock-absorbing layer 10 are pressed and fixed by the locking ring 5 and the isolation pressure ring 8 to avoid separation of the flannel noise reduction layer 9 and the elastic shock-absorbing layer 10 from the central connecting sleeve 7 during vibration transmission. The two annular noise reduction seats 6 are connected to the first conical cover 1, the second conical cover 2 and the central connecting sleeve 7 through four sealing rings 12, so that the central connecting sleeve 7 can reduce the vibration of the annular noise reduction seat 6 through the sealing ring 12 when transmitting vibration;

[0030] A sound guide tube 11 is installed on the inner side of the annular noise reduction seat 6, and multiple diversion tubes 14 are provided on both sides of the sound guide tube 11, so that the annular noise reduction seat 6 can divert noise through the sound guide tube 11 and the diversion tube 14, and the sound guide tube 11 and the annular noise reduction seat 6 are connected through the diversion tube 14, and a noise reduction connecting rod 15 is installed between two adjacent diversion tubes 14. The inner sides of both ends of the noise reduction connecting rod 15 are filled with sound-absorbing cotton, so that the noise reduction effect can be effectively achieved through the diversion tube 14 and the noise reduction connecting rod 15, and the noise in the annular noise reduction seat 6 can be refluxed through the reflux cover 13.

[0031] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A combined bell-shaped cover with a noise reduction function, comprising a first conical cover (1), characterized in that: A central connecting sleeve (7) is installed at one end of the first conical cover (1), and a second conical cover (2) is installed at one end of the central connecting sleeve (7). An elastic shock-absorbing layer (10) is provided on the inner walls of the first conical cover (1), the second conical cover (2) and the central connecting sleeve (7). A velvet noise reduction layer (9) is provided on the inner wall of the elastic shock-absorbing layer (10). An isolation pressure ring (8) is installed in the middle of the velvet noise reduction layer (9) and the elastic shock-absorbing layer (10). A locking ring (5) is installed on the outer side of the middle of the central connecting sleeve (7). Annular noise reduction seats (6) are installed on the outer sides of both ends of the central connecting sleeve (7), four sealing rings (12) are provided between the two annular noise reduction seats (6) and the central connecting sleeve (7), a plurality of sound guide tubes (11) are installed on the inner sides of the annular noise reduction seats (6), a backflow cover (13) is installed at one end of each sound guide tube (11), a plurality of shunt tubes (14) are installed on both sides of the sound guide tube (11), and a noise reduction connecting rod (15) is installed between two adjacent shunt tubes (14).

2. The combined bell-shaped cover with noise reduction function according to claim 1, characterized in that: A first connecting ring (3) is fixedly mounted on one end of the first conical cover (1) away from the central connecting sleeve (7), and a second connecting ring (4) is fixedly mounted on one end of the second conical cover (2) away from the central connecting sleeve (7).

3. The combined bell-shaped cover with noise reduction function according to claim 2, characterized in that: The first conical cover (1) and the second conical cover (2) are both fixedly connected to the flannel noise reduction layer (9) via an elastic shock-absorbing layer (10); the middle parts of the flannel noise reduction layer (9) and the elastic shock-absorbing layer (10) are both fixedly connected to the central connecting sleeve (7) via an isolation pressure ring (8); and the size of the first connecting ring (3) is larger than that of the second connecting ring (4).

4. The combined bell-shaped cover with noise reduction function according to claim 3, characterized in that: A plurality of screws are provided on the inner side of the locking ring (5), and the screws pass through the locking ring (5) and the central connecting sleeve (7) and are connected to the isolation pressure ring (8) through threads. The locking ring (5) and the isolation pressure ring (8) are fixedly connected by the screws.

5. The combined bell-shaped cover with noise reduction function according to claim 4, characterized in that: Both ends of the central connecting sleeve (7) are connected to the first conical cover (1) and the second conical cover (2) through threads, and the two annular noise reduction seats (6) are connected to the first conical cover (1), the second conical cover (2) and the central connecting sleeve (7) through sealing rings (12).

6. The combined bell-shaped cover with noise reduction function according to claim 5, characterized in that: One end of the sound guide tube (11) passes through the annular noise reduction seat (6) and is plugged into the inner side of the central connecting sleeve (7). The central connecting sleeve (7) is connected to the interior of the plurality of sound guide tubes (11). The sound guide tube (11) is fixed to the annular noise reduction seat (6) by welding. The sound guide tube (11) is connected to the backflow cover (13) by threading.

7. The combined bell-shaped cover with noise reduction function according to claim 6, characterized in that: The sound guide tube (11) is connected to the shunt tube (14) by means of a thread, both ends of the noise reduction connecting rod (15) are plugged into the inner sides of two adjacent shunt tubes (14), both ends of the noise reduction connecting rod (15) are filled with sound-absorbing cotton, and the sound guide tube (11) is connected to the annular noise reduction seat (6) by means of the shunt tube (14).

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