Noise elimination device for air inlet of Roots blower

Abstract

The utility model provides a silencing device for an air inlet of a Roots blower. The silencing device for the air inlet of the Roots blower comprises a bottom plate, the Roots blower is installed at the position, close to one side, of the top of the installation bottom plate, an air inlet pipe is installed at an inlet of the Roots blower, a first conical ring is installed at the top of the air inlet pipe through a connecting disc, a filter pipe is fixedly connected to the top of the first conical ring, and a plurality of silencing channels are formed in the top of the filter pipe; silencing cotton is installed in the silencing channels, silencing nets are arranged on the inner surfaces of the silencing cotton, and a plurality of silencing rings are fixedly connected to the inner surfaces of the silencing nets. According to the noise elimination device for the air inlet of the Roots blower, multiple channels are adopted for dividing air through the design, part of noise can be reduced, noise elimination is conducted through cooperation of the noise elimination cotton, the noise elimination ring and the noise elimination net, and the noise elimination effect of the inlet and the outlet of the Roots blower is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to roots blower gas port silencing technical field especially roots blower air inlet silencer. BACKGROUND

[0002] Roots blower belongs to volumetric blower, impeller end face, fan front and rear end cover, principle is to utilize two vane rotors to compress and transport gas in cylinder relative motion, this kind of air blower simple structure, easy to manufacture, is widely used in aquaculture oxygenation, sewage treatment aeration, cement delivery, more suitable for low pressure occasion gas delivery and pressurization system.

[0003] The working principle of roots blower is to utilize two vane rotors to compress and transport gas in cylinder relative motion, in the process of rotor rotation, gas is taken away from suction port, when to exhaust port, high pressure gas backflow, gas is transported to exhaust passage, in order to reduce the noise of roots blower inlet and outlet gas flow, it needs to adopt silencer to carry out silencing.

[0004] And the existing roots blower air inlet silencer generally adopts single passage to cooperate with sound absorption cotton to carry out silencing, and the noise generated by large single passage gas flow also increases, reduces the silencing effect of roots blower air inlet.

[0005] Therefore, it is necessary to provide roots blower air inlet silencer to solve the above technical problems. UTILITY MODEL CONTENTS

[0006] The utility model provides roots blower air inlet silencer, solves the problem that the gas flow of single passage silencer device is large and reduces the silencing effect of roots blower air inlet.

[0007] To solve the above technical problem, the roots blower air inlet silencer provided by the utility model comprises a bottom plate.

[0008] Roots blower, the inlet of the roots blower is installed with an air inlet pipe, the top of the air inlet pipe is installed with a first conical ring through a connecting disc, the top of the first conical ring is fixedly connected with a filter pipe, a plurality of silencing channels are formed in the top of the filter pipe, the inside of each silencing channel is installed with sound absorption cotton, the inner surface of the sound absorption cotton is provided with sound absorption net, the inner surface of the sound absorption net is fixedly connected with a plurality of sound absorption rings, the top end of the filter pipe is installed with a connecting pipe through a second conical ring, and the top end of the connecting pipe is fixedly connected with a flange plate.

[0009] An air outlet pipe is fixedly connected to the outlet of the roots blower, a silencing assembly is installed at the other end of the air outlet pipe, and a driving assembly is installed at the top of the bottom plate close to the other side.

[0010] The sound-absorbing channels are through the top end and the bottom end of the filter pipe, the top end and the bottom end of the sound-absorbing channels are smaller in diameter than the middle position, and the sound-absorbing rings are conical and can play a role of sound absorption and sound guiding.

[0011] Preferably, the top of the bottom plate is provided with a sound insulation cover, the top of the sound insulation cover is provided with a sealing cover, and the top of the sealing cover is provided with a through hole.

[0012] The side of the sound insulation cover is also provided with a through hole, and the through hole is convenient for the air inlet pipe and the air outlet pipe to pass through.

[0013] Preferably, the other side of the sound insulation cover is provided with a ventilation hole, and the other side of the sound insulation cover is provided with a heat dissipation assembly.

[0014] The heat dissipation assembly comprises a mounting frame and a heat dissipation fan.

[0015] Preferably, the front surface of the sound insulation cover is provided with a control box, and the front surface of the control box is rotatably connected with a box door.

[0016] The inside of the control box is provided with a power switch and a controller for controlling the operation of the equipment.

[0017] Preferably, the front surface of the sound insulation cover is provided with a mounting base, and the front surface of the mounting base is provided with an operation screen.

[0018] The operation screen can set the equipment operation parameters and display the equipment operation state.

[0019] Preferably, the drive assembly comprises a protective shell with a heat dissipation hole, the inside of the protective shell is provided with a motor, and the output end of the motor is provided with a belt pulley.

[0020] The heat dissipation hole is used for auxiliary heat dissipation, and the outer surface of the belt pulley is connected with the belt.

[0021] Compared with the related art, the Roots blower air inlet sound-absorbing device has the following advantages

[0022] Beneficial effects:

[0023] The utility model provides a roots blower air inlet silencer, in order to improve the silencing effect of roots blower air inlet, the filter pipe with first conical ring is installed to the air inlet pipe of roots blower through the butt joint pipe, and the top of filter pipe is provided with a plurality of through silencing passage, can shunt gas, then only need to install annular silencer cotton in each silencing channel, simultaneously install the silencer net with conical silencer ring in the silencing channel, adopt the multichannel shunt gas through the design, can reduce a part of noise, pass through silencer cotton, silencer ring and silencer net cooperation silencing, improved the silencing effect of roots blower inlet and outlet. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 The structure diagram of a preferred embodiment of the roots blower air inlet silencer provided by the utility model is shown in the figure.

[0025] Figure 2 The structure diagram of the roots blower provided by the utility model is shown in the figure.

[0026] Figure 3 The utility model provides Figure 2 The enlarged view of A shown in the figure.

[0027] Figure 4 The utility model provides Figure 2 The enlarged view of B shown in the figure.

[0028] Figure 5 The structure diagram of the motor provided by the utility model is shown in the figure.

[0029] Reference numerals in the figure: 1, bottom plate, 2, soundproof cover, 3, box door, 4, control box, 5, mounting base, 6, operation screen, 7, silencing assembly, 8, first conical ring, 9, filter pipe, 10, butt joint pipe, 11, connecting disc, 12, sealing cover, 13, heat dissipation assembly, 14, air outlet pipe, 15, roots blower, 16, driving assembly, 161, protective shell, 162, motor, 163, heat dissipation hole, 164, pulley, 17, air inlet pipe, 18, air hole, 19, through hole, 20, flange plate, 21, second conical ring, 22, connecting pipe, 23, silencing passage, 24, silencer cotton, 25, silencer net, 26, silencer ring. DETAILED DESCRIPTION

[0030] The utility model will be further described below in combination with the drawings and embodiments.

[0031] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 , wherein, Figure 1A preferred embodiment structure diagram of the Roots blower air inlet muffling device is provided by the utility model. Figure 2 A structure diagram of the Roots blower is provided by the utility model. Figure 3 A structure diagram of the Roots blower is provided by the utility model. Figure 2 An enlarged view of position A shown in the figure is provided by the utility model. Figure 4 A structure diagram of the Roots blower is provided by the utility model. Figure 2 An enlarged view of position B shown in the figure is provided by the utility model. Figure 5 A structure diagram of the motor is provided by the utility model. The Roots blower air inlet muffling device comprises a bottom plate 1.

[0032] The Roots blower 15 is installed at the position close to one side of the top of the bottom plate 1, an inlet of the Roots blower 15 is provided with an air inlet pipe 17, the top of the air inlet pipe 17 is provided with a first conical ring 8 through a connecting disc 11, the top of the first conical ring 8 is fixedly connected with a filter pipe 9, a plurality of muffling channels 23 are formed in the top of the filter pipe 9, the inside of each of the muffling channels 23 is provided with sound absorbing cotton 24, the inner surface of the sound absorbing cotton 24 is provided with sound absorbing nets 25, the inner surface of the sound absorbing nets 25 is fixedly connected with a plurality of sound absorbing rings 26, the top end of the filter pipe 9 is provided with a connecting pipe 22 through a second conical ring 21, and the top end of the connecting pipe 22 is fixedly connected with a flange disc 20.

[0033] An air outlet pipe 14 is fixedly connected to the outlet of the Roots blower 15, the other end of the air outlet pipe 14 is provided with a muffling assembly 7, and a driving assembly 16 is installed at the position close to the other side of the top of the bottom plate 1.

[0034] The muffling channels 23 are formed through the top end and the bottom end of the filter pipe 9, the top end and the bottom end of the muffling channels 23 are smaller in diameter than the middle position, so that the sound absorbing cotton 24 and the sound absorbing nets 25 are conveniently installed, the sound absorbing rings 26 are conical, and can play a role in offsetting and guiding sound, the driving assembly 16 and the Roots blower 15 are connected and driven through a belt and a belt pulley 164, some auxiliary working structures are also installed on the Roots blower 15, and the Roots blower 15 is an existing device.

[0035] The top of the bottom plate 1 is provided with a sound insulation cover 2, the top of the sound insulation cover 2 is provided with a sealing cover 12, and the top of the sealing cover 12 is provided with a through hole.

[0036] A through hole 19 is also formed in one side of the sound insulation cover 2, the through hole 19 is convenient for the air inlet pipe 17 and the air outlet pipe 14 to pass through, and the sound insulation cover 2 can play a sound insulation effect.

[0037] The other side of the sound insulation cover 2 is provided with a ventilation hole 18, and the other side of the sound insulation cover 2 is provided with a heat dissipation assembly 13.

[0038] The heat dissipation assembly 13 comprises a mounting frame and a heat dissipation fan, and the heat dissipation assembly 13 is positioned corresponding to the air vent 18.

[0039] The control box 4 is installed on the front surface of the soundproof cover 2, and the box door 3 is rotatably connected to the front surface of the control box 4.

[0040] The box door 3 is provided with a lock, and the control box 4 is internally provided with a power switch and a controller for controlling the operation of the equipment.

[0041] The mounting base 5 is installed on the front surface of the soundproof cover 2, and the operation screen 6 is installed on the front surface of the mounting base 5.

[0042] The operation screen 6 can set the operation parameters of the equipment and display the operation state of the equipment.

[0043] The driving assembly 16 comprises a protective shell 161 provided with a heat dissipation hole 163, the protective shell 161 is internally provided with a motor 162, and the output end of the motor 162 is provided with a belt pulley 164.

[0044] The heat dissipation hole 163 is used for assisting heat dissipation, and the outer surface of the belt pulley 164 is connected with a belt, thereby providing power for the Roots blower 15.

[0045] The working principle of the Roots blower air inlet sound attenuation device is as follows:

[0046] The filter pipe 9 provided with the first conical ring 8 is installed on the air inlet pipe 17 of the Roots blower 15 through the butt joint pipe 10, the top of the filter pipe 9 is provided with a plurality of penetrating sound attenuation channels 23, the gas can be shunted, then the annular sound attenuation cotton 24 is installed in each sound attenuation channel 23, and the sound attenuation net 25 provided with the conical sound attenuation ring 26 is also installed in the sound attenuation channel 23, in actual use, the air enters the inside of the filter pipe 9 from the second conical ring 21, is dispersed and circulated through the plurality of sound attenuation channels 23 in the filter pipe 9, the noise of the gas circulation is subjected to three times of sound attenuation through the sound attenuation cotton 24, the sound attenuation ring 26 and the sound attenuation net 25 in each sound attenuation channel 23, the echo is offset through the sound attenuation ring 26, and the noise is absorbed through the sound attenuation cotton 24, so that the propagation of the noise can be reduced.

[0047] Compared with the related art, the Roots blower air inlet sound attenuation device has the following advantages

[0048] Beneficial effects:

[0049] In order to improve the sound attenuation effect of the Roots blower air inlet, a filtering pipe 9 with a first conical ring 8 is installed on the air inlet pipe 17 of the Roots blower 15 through the butt joint pipe 10, and a plurality of through sound attenuation channels 23 are formed on the top of the filtering pipe 9, then only need to install the annular sound attenuation cotton 24 in each sound attenuation channel 23, and the sound attenuation net 25 with the conical sound attenuation ring 26 is also installed in the sound attenuation channel 23, through the design of multi-channel shunt gas, a part of noise can be reduced, and then through the cooperation of the sound attenuation cotton 24, the sound attenuation ring 26 and the sound attenuation net 25, the sound attenuation effect of the inlet and outlet of the Roots blower 15 is improved.

[0050] The above is only the embodiment of the present application, and does not limit the patent range of the present application, and any equivalent structure or equivalent process transformation obtained by using the content of the present application specification and drawings, or direct or indirect application in other related technical fields, are also included in the patent protection range of the present application.

Claims

1. A silencer for the air inlet of a Roots blower, characterized in that, include: Base plate; The Roots blower has an inlet pipe installed at the top of the mounting base plate near one side. A first conical ring is mounted on the top of the inlet pipe via a connecting plate. A filter pipe is fixedly connected to the top of the first conical ring. Multiple silencing channels are opened at the top of the filter pipe, and sound-absorbing cotton is installed inside each of the silencing channels. A sound-absorbing mesh is provided on the inner surface of each sound-absorbing cotton, and multiple sound-absorbing rings are fixedly connected to the inner surface of each sound-absorbing mesh. A connecting pipe is installed at the top of the filter pipe via a second conical ring, and a flange is fixedly connected to the top of the connecting pipe. An exhaust pipe is fixedly connected to the outlet of the Roots blower. A silencer is installed at the other end of the exhaust pipe. A drive assembly is installed on the top of the base plate near the other side.

2. The silencer for the air inlet of a Roots blower according to claim 1, characterized in that, A soundproof cover is installed on the top of the base plate, and a sealing cover is installed on the top of the soundproof cover. The sealing cover has an opening on its top.

3. The silencer device for the air inlet of a Roots blower according to claim 2, characterized in that, The soundproof cover has ventilation holes on the other side, and a heat dissipation component is installed on the other side.

4. The silencer device for the air inlet of a Roots blower according to claim 2, characterized in that, A control box is mounted on the front of the soundproof enclosure, and a door is rotatably connected to the front of the control box.

5. The silencer for the air inlet of a Roots blower according to claim 2, characterized in that, The soundproof enclosure has a mounting base on its front side, and the mounting base has an operation screen on its front side.

6. The silencer device for the air inlet of a Roots blower according to claim 1, characterized in that, The drive assembly includes a protective housing with heat dissipation holes, a motor is installed inside the protective housing, and a pulley is installed at the output end of the motor.

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