Broadband low-noise exhaust silencing device

Abstract

The utility model discloses a broadband low-noise exhaust silencing device which comprises an exhaust pipe and a draught hood, the draught hood is installed at one end of the exhaust pipe, a silencing cylinder is installed at the other end of the exhaust pipe, lifting hooks are symmetrically installed at the top end of the exhaust pipe, a valve seat is installed in the exhaust pipe on one side of the draught hood, and the valve seat is connected with the exhaust pipe on the other side of the draught hood. An annular frame is installed in the exhaust pipe on one side of the lifting hook, a positioning cylinder is arranged at the center position in the annular frame, a servo motor is installed in the positioning cylinder, a rotating shaft is installed at the output end of the servo motor, and fan blades are installed at the end, away from the servo motor, of the rotating shaft; a plurality of sets of rear clamping hooks are installed on the outer wall of the positioning cylinder at equal intervals. According to the exhaust silencing device, the excellent broadband low-noise stable operation of the exhaust silencing device is realized, the noise during use is reduced, the stability during operation is improved, the size of the gas pipe cavity can be conveniently controlled and adjusted, and the convenience of controlling and adjusting the gas flow rate is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of exhaust silencer devices, in particular to a broadband and low-noise exhaust silencer device. Background Art

[0002] The exhaust duct is a device used to discharge the dirty air in the room to the outside. Noise is generated during the exhaust process, which seriously affects the indoor environment and people's lives. The muffler is a device used to reduce noise by converting noise energy into other forms of energy to achieve the purpose of noise reduction. The principle of exhaust duct plus muffler is to combine the exhaust duct with the muffler to reduce the indoor noise to a minimum, especially in some noise-sensitive places such as hospitals, schools, offices, etc. The use of exhaust duct plus muffler can improve indoor comfort and reduce people's stress and fatigue.

[0003] For example, the expandable exhaust silencer device disclosed in the authorization announcement number CN205225405U mainly consists of a row of outer silencers, a row of inner silencers and a fixed frame. The outer silencers are fixed to the fixed frame, and the inner silencers are fixed at the exhaust outlet of the power station. When the power station is stationary or in transportation, the inner and outer silencers are crossed together, and do not occupy additional space. When the power station is in operation, the outer silencers can be pulled out, doubling the length of the entire exhaust noise reduction channel, and its noise reduction effect will also be significantly improved.

[0004] Although the extended exhaust silencer structure is mainly installed at the exhaust port of a box-type or square cabin power station, it greatly reduces the noise at the exhaust port when the power station is working, and prevents the noise at the exhaust port from affecting the noise of other noise test surfaces, thereby reducing the average value of the test noise and improving the level of the silent power station;

[0005] However, the problem that the existing exhaust silencer of this type is generally not conducive to excellent wide-band, low-noise and stable operation during use, is not convenient for convenient control and adjustment of the size of the gas tube cavity, greatly affects the noise during use and stability during operation, and affects the convenience of gas flow rate control and adjustment. Utility Model Content

[0006] The purpose of the present utility model is to provide a broadband low-noise exhaust silencer to solve the problem in the above-mentioned background technology that the exhaust silencer is not convenient for excellent broadband low-noise stable operation, which affects the noise during use and stability during operation, is not convenient for convenient control and adjustment of the size of the gas tube cavity, and affects the convenience of gas flow rate control and adjustment.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a broadband low-noise exhaust and silencer device, comprising an exhaust pipe and an exhaust hood, wherein the exhaust pipe is installed at one end and the exhaust hood is installed at the other end of the exhaust pipe, a hook is symmetrically installed on the top of the exhaust pipe, a valve seat is installed inside the exhaust pipe on one side of the exhaust hood, an annular frame is installed inside the exhaust pipe on one side of the hook, a positioning cylinder is provided at the center position inside the annular frame, a servo motor is installed inside the positioning cylinder, a rotating shaft is installed at the output end of the servo motor, and a fan blade is installed at the end of the rotating shaft away from the servo motor, a plurality of groups of rear hooks with equal intervals are installed on the outer wall of the positioning cylinder, front hooks are installed on the outer wall of the annular frame on one side of the rear hook, elastic ropes are provided on the outside of both sides of the annular frame, and the elastic ropes extend to the surfaces of the front hook and the rear hook.

[0008] Preferably, shock absorbers are symmetrically arranged on the outer wall of the positioning cylinder, a rear clamping shaft is provided at one end of the shock absorber close to the positioning cylinder, and the shock absorber is movably connected to the positioning cylinder through the rear clamping shaft, and a front clamping shaft is provided at one end of the shock absorber close to the annular frame, and the shock absorber is movably connected to the annular frame through the front clamping shaft.

[0009] Preferably, a center disk is provided at the center position inside the valve seat, and a plurality of valve shafts are movably mounted at equal intervals on the outer wall of the center disk, and the valve shafts all extend to the outside of the valve seat.

[0010] Preferably, the valve shaft surface on one side of the central disk is fitted with a valve plate, and the end of the valve shaft away from the exhaust pipe is fitted with a large arm.

[0011] Preferably, an annular ring is slidably mounted on the outer wall of the valve seat, and small arms are provided on the outer wall of the annular ring on one side of the large arm.

[0012] Preferably, a support shaft is installed at one end of the small arm close to the annular ring, and the annular ring is movably connected to the small arm through the support shaft.

[0013] Preferably, a hinge shaft is installed at one end of the forearm close to the upper arm, and the forearm is movably connected to the upper arm through the hinge shaft.

[0014] Preferably, an electric push rod is installed on the outer wall of the valve seat on one side of the annular ring, and the output end of the electric push rod is connected to the annular ring.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: the exhaust silencer device not only realizes the excellent wide-band, low-noise and stable operation of the exhaust silencer device, reduces the noise during use, and improves the stability during operation, but also facilitates the convenient control and adjustment of the size of the gas lumen, and improves the convenience of controlling and adjusting the gas flow rate;

[0016] The servo motor drives the rotating shaft to rotate, and the rotating shaft drives the fan blades to rotate to draw the external gas into the interior of the exhaust hood. The gas is discharged through the silencer, and the silencer plays the role of silencing. Two sets of elastic ropes cooperate to provide shock-absorbing support to reduce the vibration of the servo motor during operation. The shock absorber plays the role of further shock-absorbing support to achieve excellent wide-band, low-noise and stable operation, thus realizing the excellent wide-band, low-noise and stable operation of the exhaust silencer device, reducing the noise during use and improving the stability during operation;

[0017] The annular ring is driven to move by an electric push rod, and the annular ring drives the small arm to move through the fan blade, and the small arm drives the large arm to rotate through the hinge shaft, and the large arm drives the valve plate to rotate through the valve shaft. The center disk movably supports the valve shaft to facilitate adjustment of the angles of multiple groups of valve plates to facilitate control of the flow rate of the incoming gas, thereby realizing convenient control of the gas flow rate of the exhaust silencer device, facilitating convenient control and adjustment of the size of the gas tube cavity, and improving the convenience of gas flow rate control and adjustment. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the front cross-sectional structure of the present utility model;

[0020] Figure 3 This is a schematic diagram of the three-dimensional structure of the exhaust pipe of the utility model;

[0021] Figure 4 This is a schematic diagram of the three-dimensional structure of the fan blade of the present invention;

[0022] Figure 5 This is a front view structural diagram of the ring frame of the present invention;

[0023] Figure 6 This is a side structural diagram of the shock absorber of the present utility model;

[0024] Figure 7 This is a schematic diagram of the three-dimensional structure of the valve seat of the utility model;

[0025] Figure 8 This is a schematic diagram of the three-dimensional structure of the servo motor of the present utility model;

[0026] Figure 9 This is a schematic diagram of the three-dimensional structure of the rear hook of the utility model;

[0027] Figure 10 It is a schematic diagram of the front view structure of the upper arm of the present invention.

[0028] In the figure: 1. Exhaust duct; 2. Exhaust hood; 3. Hook; 4. Muffler; 5. Valve seat; 6. Ring frame; 7. Front hook; 8. Elastic rope; 9. Rear hook; 10. Positioning cylinder; 11. Servo motor; 12. Rotating shaft; 13. Fan blade; 14. Front clamping shaft; 15. Shock absorber; 16. Rear clamping shaft; 17. Center plate; 18. Upper arm; 19. Valve shaft; 20. Ring; 21. Articulated shaft; 22. Small arm; 23. Support shaft; 24. Electric push rod; 25. Valve plate. DETAILED DESCRIPTION

[0029] In order to further illustrate the technical means and effects adopted by the present invention to achieve the predetermined purpose of the utility model, the following is a detailed description of the specific implementation method, structure, characteristics and effects of the present invention in combination with the accompanying drawings and preferred embodiments.

[0030] See also Figure 1-10 , the utility model provides an embodiment: a broadband low-noise exhaust silencer device, including an exhaust pipe 1 and an exhaust hood 2, an exhaust hood 2 is installed at one end of the exhaust pipe 1, and a muffler 4 is installed at the other end of the exhaust pipe 1. The muffler 4 adopts the same type of product as the Gelite muffler of Qidong Gelite Petrochemical Equipment Factory. The top of the exhaust pipe 1 is symmetrically installed with a hook 3, a valve seat 5 is installed inside the exhaust pipe 1 on one side of the exhaust hood 2, and an annular frame 6 is installed inside the exhaust pipe 1 on the side of the hook 3. The center position of the annular frame 6 is provided. A positioning cylinder 10 is provided, and a servo motor 11 is installed inside the positioning cylinder 10. The servo motor 11 plays a role of power drive. A rotating shaft 12 is installed at the output end of the servo motor 11, and a fan blade 13 is installed at the end of the rotating shaft 12 away from the servo motor 11. Multiple groups of rear hooks 9 are installed at equal intervals on the outer wall of the positioning cylinder 10. Front hooks 7 are installed on the outer wall of the annular frame 6 on one side of the rear hooks 9. Elastic ropes 8 are provided on the outside of both sides of the annular frame 6, and the elastic ropes 8 extend to the surfaces of the front hooks 7 and the rear hooks 9.

[0031] Shock absorbers 15 are symmetrically arranged on the outer wall of the positioning cylinder 10. The shock absorbers 15 adopt the common electric vehicle rear shock absorbers on the market. A rear clamping shaft 16 is provided at the end of the shock absorber 15 close to the positioning cylinder 10, and the shock absorber 15 is movably connected to the positioning cylinder 10 through the rear clamping shaft 16. A front clamping shaft 14 is provided at the end of the shock absorber 15 close to the annular frame 6, and the shock absorber 15 is movably connected to the annular frame 6 through the front clamping shaft 14.

[0032] By turning on the servo motor 11, the servo motor 11 drives the rotating shaft 12 to rotate, and the rotating shaft 12 drives the fan blades 13 to rotate, so as to draw the external gas into the interior of the exhaust hood 2, and the gas is discharged through the muffler 4, and the muffler 4 plays the role of silencing. When the servo motor 11 is running, a lot of vibration will be generated. The elastic rope 8 is connected to the annular frame 6 through the front hook 7, and the elastic rope 8 is connected to the positioning cylinder 10 through the rear hook 9. The two groups of elastic ropes 8 cooperate to perform shock-absorbing support to reduce the vibration of the servo motor 11 when it is running. The annular frame 6 supports the shock absorber 15 through the front card shaft 14, and the positioning cylinder 10 supports the shock absorber 15 through the rear card shaft 16. The shock absorber 15 plays the role of shock-absorbing support again, so as to achieve excellent wide-band, low-noise and stable operation, thereby realizing excellent wide-band, low-noise and stable operation of the exhaust muffler device, reducing noise during use and improving stability during operation;

[0033] A center disk 17 is provided at the center of the valve seat 5. Multiple valve shafts 19 are movably mounted on the outer wall of the center disk 17 at equal intervals. The valve shafts 19 all extend to the outside of the valve seat 5.

[0034] The surface of the valve shaft 19 on one side of the center disk 17 is fitted with a valve plate 25, and the end of the valve shaft 19 away from the exhaust pipe 1 is fitted with a large arm 18;

[0035] An annular ring 20 is slidably mounted on the outer wall of the valve seat 5. A small arm 22 is provided on the outer wall of the annular ring 20 on one side of the large arm 18. A support shaft 23 is installed on the end of the small arm 22 close to the annular ring 20, and the annular ring 20 is movably connected to the small arm 22 via the support shaft 23.

[0036] The end of the small arm 22 close to the upper arm 18 is equipped with a hinge shaft 21, and the small arm 22 is movably connected to the upper arm 18 through the hinge shaft 21. An electric push rod 24 is installed on the outer wall of the valve seat 5 on one side of the annular ring 20, and the output end of the electric push rod 24 is connected to the annular ring 20.

[0037] By opening the electric push rod 24, with the support of the valve seat 5, the electric push rod 24 drives the annular ring 20 to move, and the annular ring 20 drives the small arm 22 to move through the fan blade 13, and the small arm 22 drives the large arm 18 to rotate through the hinge shaft 21, and the large arm 18 drives the valve plate 25 to rotate through the valve shaft 19. The center disk 17 movably supports the valve shaft 19 to facilitate the adjustment of the angles of multiple groups of valve plates 25, to facilitate the control of the flow rate of the incoming gas, and realize the convenient control of the gas flow rate of the exhaust silencer, convenient control and adjustment of the size of the gas tube cavity, and improved the convenience of gas flow rate control.

[0038] When the embodiment of the present application is in use: an external power supply is connected, and the rotating shaft 12 is driven to rotate by the servo motor 11. The rotating shaft 12 drives the fan blades 13 to rotate to draw the external gas into the interior of the exhaust hood 2. The gas is discharged through the muffler 4. The muffler 4 plays a role in silencing. When the servo motor 11 is running, a lot of vibration will be generated. The elastic rope 8 is connected to the ring frame 6 through the front hook 7. The elastic rope 8 is connected to the positioning cylinder 10 through the rear hook 9. The two groups of elastic ropes 8 cooperate to perform shock-absorbing support to reduce the vibration of the servo motor 11 when it is running. The ring frame 6 supports the shock absorber 15 through the front axis 14. The positioning cylinder 10 is connected to the front axis 14. Afterwards, the clamping shaft 16 supports the shock absorber 15, and the shock absorber 15 plays the role of secondary shock absorption support to achieve excellent wide-band, low-noise and stable operation. Then, by opening the electric push rod 24, under the support of the valve seat 5, the electric push rod 24 drives the annular ring 20 to move, and the annular ring 20 drives the small arm 22 to move through the fan blade 13. The small arm 22 drives the large arm 18 to rotate through the hinge shaft 21. The large arm 18 drives the valve plate 25 to rotate through the valve shaft 19. The center disk 17 provides movably support for the valve shaft 19 to facilitate the adjustment of the angles of multiple sets of valve plates 25, to facilitate the control of the flow rate of the incoming gas, and to complete the use of the exhaust silencer.

[0039] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any person skilled in the art can make some changes or modifications to equivalent embodiments using the technical contents disclosed above without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A broadband low-noise exhaust muffler, characterized by: The invention comprises an exhaust pipe (1) and an exhaust hood (2), wherein the exhaust pipe (1) is provided with an exhaust hood (2) at one end thereof, a muffler (4) is provided at the other end thereof, a hook (3) is symmetrically provided at the top end of the exhaust pipe (1), a valve seat (5) is provided inside the exhaust pipe (1) on one side of the exhaust hood (2), an annular frame (6) is provided inside the exhaust pipe (1) on one side of the hook (3), a positioning cylinder (10) is provided at the center position inside the annular frame (6), and a valve seat (5) is provided inside the positioning cylinder (10). A servo motor (11) is provided, a rotating shaft (12) is installed at the output end of the servo motor (11), and a fan blade (13) is installed at one end of the rotating shaft (12) away from the servo motor (11), a plurality of groups of rear hooks (9) with equal spacing are installed on the outer wall of the positioning cylinder (10), a front hook (7) is installed on the outer wall of the ring frame (6) on one side of the rear hook (9), and elastic ropes (8) are provided on the outside of both sides of the ring frame (6), and the elastic ropes (8) extend to the surfaces of the front hook (7) and the rear hook (9).

2. A broadband low-noise exhaust and silencer according to claim 1, characterized in that: A shock absorber (15) is symmetrically arranged on the outer wall of the positioning cylinder (10), a rear clamping shaft (16) is arranged at one end of the shock absorber (15) close to the positioning cylinder (10), and the shock absorber (15) is movably connected to the positioning cylinder (10) through the rear clamping shaft (16), and a front clamping shaft (14) is arranged at one end of the shock absorber (15) close to the annular frame (6), and the shock absorber (15) is movably connected to the annular frame (6) through the front clamping shaft (14).

3. The broadband low-noise exhaust and silencer device according to claim 1, characterized in that: A center disk (17) is provided at the center position inside the valve seat (5), and multiple groups of valve shafts (19) are movably mounted at equal intervals on the outer wall of the center disk (17), and the valve shafts (19) all extend to the outside of the valve seat (5).

4. A broadband low-noise exhaust and silencer according to claim 3, characterized in that: The surface of the valve shaft (19) on one side of the central disk (17) is provided with a valve plate (25), and the end of the valve shaft (19) away from the exhaust pipe (1) is provided with a large arm (18).

5. The broadband low-noise exhaust and silencer device according to claim 4, characterized in that: An annular ring (20) is slidably mounted on the outer wall of the valve seat (5), and a small arm (22) is provided on the outer wall of the annular ring (20) on one side of the large arm (18).

6. The broadband low-noise exhaust and silencer device according to claim 5, characterized in that: A support shaft (23) is installed at one end of the small arm (22) close to the annular ring (20), and the annular ring (20) is movably connected to the small arm (22) through the support shaft (23).

7. The broadband low-noise exhaust and silencer device according to claim 5, characterized in that: The end of the small arm (22) close to the large arm (18) is equipped with a hinge shaft (21), and the small arm (22) is movably connected to the large arm (18) through the hinge shaft (21).

8. The broadband low-noise exhaust and silencer device according to claim 5, characterized in that: An electric push rod (24) is installed on the outer wall of the valve seat (5) on one side of the annular ring (20), and the output end of the electric push rod (24) is connected to the annular ring (20).

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