Intelligent noise reduction box for Roots blower

Abstract

The intelligent noise reduction box body comprises a noise reduction box, a PLC (programmable logic controller) is mounted on the outer wall of the noise reduction box, and loudspeakers are uniformly mounted at the top end in the noise reduction box. When the noise reduction box is used, the noise sensor can collect noise data generated by the Roots blower installed in the noise reduction box in real time and send the noise data to the PLC for analysis and processing, a noise reduction strategy algorithm is integrated on the PLC, and the four loudspeakers symmetrically distributed in the noise reduction box are automatically adjusted to be started according to the noise sensor. The loudspeaker array emits sound waves with the phase opposite to that of noise to offset part of main frequency noise, and the impedance composite silencers are installed on the air outlet connecting pipe and the air inlet connecting pipe, so that the good silencing protection function can be achieved for the air outlet and the air inlet of the device, and the noise reduction effect is good. Therefore, the device realizes a multi-stage comprehensive noise reduction protection structure, and the noise reduction performance is improved.

Description

Technical Field

[0001] This utility model relates to the field of noise reduction technology for Roots blowers, specifically to an intelligent noise reduction enclosure for Roots blowers. Background Technology

[0002] Roots blowers are widely used in many fields such as sewage treatment and pneumatic conveying due to their stable flow rate and simple structure. It is a positive displacement rotary blower. Its working principle is to compress and transport gas by two lobe-shaped rotors moving relative to each other in a cylinder. Roots blowers generate relatively serious noise pollution when running, so noise reduction enclosures are required.

[0003] Current noise reduction enclosures for Roots blowers often directly cover the blower for noise isolation, which leads to poor heat dissipation and easy shutdown due to overheating. Adding an extra fan for heat dissipation will generate new noise pollution. Therefore, we propose a new type of intelligent noise reduction enclosure for Roots blowers that combines good noise reduction and heat dissipation protection. Utility Model Content

[0004] The purpose of this invention is to provide an intelligent noise reduction enclosure for Roots blowers to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an intelligent noise reduction enclosure for a Roots blower, comprising a noise reduction enclosure, a PLC controller mounted on the outer wall of the noise reduction enclosure, speakers uniformly mounted at the top of the interior of the noise reduction enclosure, a first annular heat-conducting element, a noise sensor, and a temperature sensor sequentially mounted inside the noise reduction enclosure, a top cover snapped onto the top of the noise reduction enclosure, a semiconductor cooling chip fixed at the middle of the top cover, a heating surface provided on the top of the semiconductor cooling chip, a first copper alloy heat dissipation fin uniformly fixed on the top of the heating surface, a cooling surface extending into the interior of the noise reduction enclosure provided on the bottom of the semiconductor cooling chip, a second annular heat-conducting element matching the first annular heat-conducting element fixed on the bottom of the cooling surface, second copper alloy heat dissipation fins uniformly provided on the outer walls of both the second and first annular heat-conducting elements, an air outlet connection pipe and an air inlet connection pipe respectively mounted at both ends of the top cover, and an impedance composite silencer and a flange respectively mounted at both ends of the air outlet connection pipe and the air inlet connection pipe.

[0006] Preferably, rubber buffer feet are evenly installed on both sides of the bottom of the noise reduction box.

[0007] Preferably, the outer wall of the noise reduction box is provided with a high-density glass fiber cotton layer.

[0008] Preferably, four speakers are provided, and the speakers are symmetrically distributed in four directions inside the noise reduction box.

[0009] Preferably, locking plates are evenly provided at the bottom of both sides of the top cover, and screws are provided between the locking plates and the noise reduction box.

[0010] Preferably, the bottom of the top cover is provided with a mounting groove that matches the noise reduction box, and both ends of the top cover are respectively provided with reserved openings that match the air outlet connection pipe and the air inlet connection pipe.

[0011] Preferably, the inner walls of the mounting slot and the reserved opening are both fixed with a sealing airbag layer.

[0012] Preferably, an air guide pipe is provided on the sealing airbag layer, and an air valve is installed on the air guide pipe.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] (1) The intelligent noise reduction enclosure for the Roots blower optimizes its structure by installing noise sensors. On the one hand, the noise sensors can collect noise data generated by the Roots blower installed inside the noise reduction enclosure in real time and send it to the PLC controller for analysis and processing. The PLC controller integrates a noise reduction strategy algorithm, which automatically adjusts the four symmetrically distributed speakers inside the noise reduction enclosure according to the noise sensors. The speakers emit sound waves with the opposite phase to the noise to cancel out part of the main frequency noise. In addition, the noise reduction enclosure covers the Roots blower, which achieves good sound insulation by using the high-density glass fiber cotton layer on the outer wall of the enclosure, and achieves good shock absorption and noise reduction protection by using the rubber buffer feet at the bottom of the noise reduction enclosure. On the other hand, the user can call The air valve, through the air guide pipe, inflates the sealing airbag layer on the inner wall of the mounting groove and reserved opening on the top cover, firmly pressing against the air inlet pipe, air outlet pipe, and noise reduction box. This improves the overall sealing effect of the device, preventing noise from leaking out through the connection seams and optimizing the noise reduction effect. Furthermore, by installing impedance composite silencers on both the air outlet and air inlet pipes, good noise reduction protection is achieved for both the air outlet and air inlet of the device. Specifically, the combination of the resistive expansion chamber structure and resistive porous sound-absorbing material inside the impedance composite silencer can weaken low-frequency noise through abrupt changes in cross-section and attenuate mid-to-high-frequency noise through the sound-absorbing material. This enables the device to achieve a multi-level comprehensive noise reduction protection structure, improving noise reduction performance.

[0015] (2) The intelligent noise reduction enclosure for the Roots blower is equipped with a PLC controller, which optimizes the device's performance. The temperature sensor monitors the temperature inside the noise reduction enclosure in real time during the operation of the Roots blower and feeds it back to the PLC controller. When overheating occurs, the PLC controller controls the semiconductor cooling chip to be energized, so that it extends to the cooling surface inside the noise reduction enclosure for cooling. Heat exchange occurs between the second annular heat-conducting component and the Roots blower installed inside the first annular heat-conducting component. The second copper alloy heat dissipation fins arranged on the outer walls of the second and first annular heat-conducting components increase the heat conduction area and improve the heat dissipation efficiency. This enables efficient heat dissipation protection for the Roots blower, making the device both noise reduction and heat dissipation. Compared with simple shell wall heat dissipation, the heat dissipation efficiency is higher. Compared with common fan heat dissipation, it reduces additional noise interference, making the device more practical and easier to promote. Attached Figure Description

[0016] Figure 1 This is a front view structural diagram of the present invention;

[0017] Figure 2 This is a top view cross-sectional structural diagram of the noise reduction box of this utility model;

[0018] Figure 3 This is a partial cross-sectional view of the top cover of this utility model.

[0019] Figure 4 This is a partial sectional view of the reserved opening structure of this utility model.

[0020] Figure 5 This utility model Figure 3 Enlarged structural diagram at point A in the middle.

[0021] In the diagram: 1. Exhaust pipe; 2. Locking plate; 3. Noise reduction box; 4. Rubber buffer feet; 5. Inlet pipe; 6. Semiconductor cooling chip; 7. First copper alloy heat sink fins; 8. Top cover; 9. Temperature sensor; 10. Speaker; 11. First annular heat conductor; 12. Second copper alloy heat sink fins; 13. PLC controller; 14. Noise sensor; 15. Impedance composite silencer; 16. Flange; 17. Second annular heat conductor; 18. Cooling surface; 19. Heating surface; 20. Reserved opening; 21. Sealing airbag layer; 22. Air duct connection pipe; 23. Air valve; 24. Mounting slot. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0023] Please see Figure 1-5 An embodiment of this utility model is provided: an intelligent noise reduction box for a Roots blower, including a noise reduction box 3, a PLC controller 13 installed on the outer wall of the noise reduction box 3, a speaker 10 evenly installed at the top inside the noise reduction box 3, and a first annular heat-conducting component 11, a noise sensor 14 and a temperature sensor 9 sequentially installed inside the noise reduction box 3.

[0024] Rubber buffer feet 4 are evenly installed on both sides of the bottom of the noise reduction box 3;

[0025] The outer wall of the noise reduction box 3 is provided with a high-density glass fiber cotton layer;

[0026] In use, the noise sensor 14 can collect the noise data generated by the Roots blower installed inside the noise reduction box 3 in real time and send it to the PLC controller 13 for analysis and processing. The PLC controller 13 integrates a noise reduction strategy algorithm, which automatically adjusts the four speakers 10 symmetrically distributed inside the noise reduction box 3 according to the noise sensor 14. The speakers emit sound waves with the opposite phase to the noise through the speaker array to cancel out part of the main frequency noise. In addition, the noise reduction box 3 covers the Roots blower, which achieves a good sound insulation effect by using the high-density glass fiber cotton layer set on the outer wall of the box, and achieves a good shock absorption and noise reduction protection by using the rubber buffer feet 4 at the bottom of the noise reduction box 3.

[0027] The top of the noise reduction box 3 is fitted with a top cover 8, and a semiconductor cooling chip 6 is fixed in the middle of the top cover 8. A heating surface 19 is provided on the top of the semiconductor cooling chip 6, and a first copper alloy heat dissipation fin 7 is uniformly fixed on the top of the heating surface 19.

[0028] The bottom of the semiconductor cooling chip 6 is provided with a cooling surface 18 extending into the noise reduction box 3. The bottom of the cooling surface 18 is fixed with a second annular heat conductor 17 that matches the first annular heat conductor 11. The outer walls of the second annular heat conductor 17 and the first annular heat conductor 11 are uniformly provided with second copper alloy heat dissipation fins 12.

[0029] During use, the temperature sensor 9 monitors the temperature inside the noise reduction box 3 in real time while the Roots blower is running, and feeds it back to the PLC controller 13. When overheating occurs, the PLC controller 13 controls the semiconductor cooling chip 6 to be energized, so that it extends to the cooling surface 18 inside the noise reduction box 3 for cooling treatment. Heat exchange occurs between the second annular heat-conducting element 17 and the Roots blower installed inside the first annular heat-conducting element 11. In addition, the second copper alloy heat dissipation fins 12 arranged on the outer wall of the second annular heat-conducting element 17 and the first annular heat-conducting element 11 increase the heat conduction area and improve the heat conduction and heat dissipation efficiency. Thus, the Roots blower can achieve a highly efficient heat dissipation protection effect. The device has both good noise reduction and heat dissipation effects. Compared with simple shell wall heat conduction heat dissipation, the heat dissipation efficiency is higher. Compared with common fan heat dissipation, it reduces additional noise interference, which makes the device more practical and easier to promote.

[0030] The top cover 8 is equipped with an air outlet connection pipe 1 and an air inlet connection pipe 5 at its two ends respectively. Both ends of the air outlet connection pipe 1 and the air inlet connection pipe 5 are equipped with an impedance composite silencer 15 and a flange 16 respectively.

[0031] There are four speakers 10, which are symmetrically distributed in four positions inside the noise reduction box 3.

[0032] Locking plates 2 are evenly arranged on the bottom of both sides of the top cover 8, and screws are installed between the locking plates 2 and the noise reduction box 3;

[0033] The bottom of the top cover 8 is provided with a mounting slot 24 that matches the noise reduction box 3, and the two ends of the top cover 8 are respectively provided with reserved openings 20 that match the air outlet connection pipe 1 and the air inlet connection pipe 5.

[0034] Both the inner walls of the mounting slot 24 and the reserved opening 20 are fixed with a sealing airbag layer 21;

[0035] An air-guiding connecting pipe 22 is provided on the air-sealing airbag layer 21, and an air valve 23 is installed on the air-guiding connecting pipe 22;

[0036] When in use, the user can open the air valve 23 and, through the air guide connecting pipe 22, inflate the sealing airbag layer 21 on the inner wall of the locking groove 24 and the reserved opening 20 on the top cover 8, and firmly press against the air inlet connecting pipe 5, the air outlet connecting pipe 1 and the noise reduction box 3, thereby improving the overall sealing effect of the device, preventing noise from leaking out through the device connection seams, and optimizing the noise reduction effect.

[0037] In this embodiment, the user first installs the Roots blower inside the first annular heat-conducting element 11 inside the noise reduction box 3. Then, the user connects the input and output ends of the Roots blower to the inlet connecting pipe 5 and outlet connecting pipe 1 on the top cover 8 via connecting hoses. Next, the user closes the top cover 8 and locks it to the noise reduction box 3 using locking plates 2 and screws. Then, the user opens the air valve 23, allowing the air to be introduced through the air guide connecting pipe 22, inflating the sealing airbag layer 21 on the inner wall of the locking groove 24 and the reserved opening 20 on the top cover 8. This inflates the airbag layer 21, firmly pressing against the inlet connecting pipe 5, the outlet connecting pipe 1, and the noise reduction box 3, thereby improving the overall airtightness of the device. The sealing effect prevents noise from leaking out through the joints of the device, thus optimizing the noise reduction effect. In actual operation, the noise sensor 14 can collect the noise data generated by the Roots blower installed inside the noise reduction box 3 in real time and send it to the PLC controller 13 for analysis and processing. The PLC controller 13 integrates a noise reduction strategy algorithm, which automatically adjusts the four speakers 10 symmetrically distributed inside the noise reduction box 3 according to the noise sensor 14. The speakers emit sound waves with opposite phase to the noise through the speaker array to cancel out part of the main frequency noise. In addition, the noise reduction box 3 covers the Roots blower, which not only utilizes the high-density glass fiber cotton layer on the outer wall of the box to achieve a good sound insulation effect, but also utilizes the bottom of the noise reduction box 3 to achieve a good sound insulation effect. The rubber buffer feet 4 of the unit provide good shock absorption and noise reduction protection. Secondly, by installing impedance composite silencers 15 on both the outlet and inlet connecting pipes 1 and 5, good noise reduction protection is achieved for both the outlet and inlet of the device. Specifically, the impedance composite silencer 15 combines a resistive expansion chamber structure with resistive porous sound-absorbing material, which can weaken low-frequency noise through abrupt changes in cross-section and attenuate mid-to-high-frequency noise through the sound-absorbing material. Furthermore, the temperature sensor 9 monitors the temperature inside the noise reduction box 3 in real time during the operation of the Roots blower and feeds it back to the PLC controller 13. When overheating occurs, the PLC controller 13 will control the half-load... When the conductor cooling chip 6 is energized, it extends to the cooling surface 18 inside the noise reduction box 3 for cooling treatment. It also exchanges heat with the Roots blower installed inside the first annular heat conductor 11 through the second annular heat conductor 17. In addition, the second copper alloy heat dissipation fins 12 arranged on the outer wall of the second annular heat conductor 17 and the first annular heat conductor 11 increase the heat conduction area and improve the heat dissipation efficiency. This can achieve a highly efficient heat dissipation protection effect for the Roots blower. The device has both good noise reduction and heat dissipation effects. Compared with simple shell wall heat conduction heat dissipation, the heat dissipation efficiency is higher. Compared with common fan heat dissipation, it reduces additional noise interference. This makes the device more practical and easier to promote.

Claims

1. A smart noise reduction enclosure for Roots blowers, characterized in that, The noise reduction box (3) includes a PLC controller (13) installed on its outer wall. Speakers (10) are evenly installed at the top of the interior of the noise reduction box (3). A first annular heat-conducting component (11), a noise sensor (14), and a temperature sensor (9) are sequentially installed inside the noise reduction box (3). A top cover (8) is fitted onto the top of the noise reduction box (3). A semiconductor cooling chip (6) is fixed in the middle of the top cover (8). A heating surface (19) is provided on the top of the semiconductor cooling chip (6). First copper alloy heat dissipation fins (7) are evenly fixed on the top of the heating surface (19). The bottom of the cooling plate (6) is provided with a cooling surface (18) extending into the noise reduction box (3). The bottom of the cooling surface (18) is fixed with a second annular heat-conducting element (17) that matches the first annular heat-conducting element (11). The outer walls of the second annular heat-conducting element (17) and the first annular heat-conducting element (11) are uniformly provided with second copper alloy heat dissipation fins (12). The top cover (8) is respectively equipped with an air outlet connection pipe (1) and an air inlet connection pipe (5). The two ends of the air outlet connection pipe (1) and the air inlet connection pipe (5) are respectively equipped with an impedance composite silencer (15) and a flange (16).

2. The intelligent noise reduction enclosure for a Roots blower according to claim 1, characterized in that: Rubber buffer feet (4) are evenly installed on both sides of the bottom of the noise reduction box (3).

3. The intelligent noise reduction enclosure for a Roots blower according to claim 1, characterized in that: The outer wall of the noise reduction box (3) is provided with a high-density glass fiber cotton layer.

4. The intelligent noise reduction enclosure for a Roots blower according to claim 1, characterized in that: There are four loudspeakers (10), which are symmetrically distributed in four directions inside the noise reduction box (3).

5. The intelligent noise reduction enclosure for a Roots blower according to claim 1, characterized in that: Locking plates (2) are evenly arranged on the bottom of both sides of the top cover (8), and screws are provided between the locking plates (2) and the noise reduction box (3).

6. The intelligent noise reduction enclosure for a Roots blower according to claim 1, characterized in that: The bottom of the top cover (8) is provided with a mounting groove (24) that matches the noise reduction box (3), and the two ends of the top cover (8) are respectively provided with reserved openings (20) that match the air outlet connection pipe (1) and the air inlet connection pipe (5).

7. The intelligent noise reduction enclosure for a Roots blower according to claim 6, characterized in that: The inner walls of the mounting slot (24) and the reserved opening (20) are both fixed with a sealing airbag layer (21).

8. The intelligent noise reduction enclosure for a Roots blower according to claim 7, characterized in that: An air-guiding connecting pipe (22) is provided on the air-sealing airbag layer (21), and an air valve (23) is installed on the air-guiding connecting pipe (22).

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