Roots blower with low-noise shell

Abstract

The utility model relates to the technical field of fans, in particular to a Roots blower with a low-noise shell, which comprises a fan main body, a shell arranged outside the fan main body, a mounting groove arranged on the shell, a pipeline mounting port arranged inside the mounting groove and four groups of mounting plates arranged inside the mounting groove, the mounting plates are hinged with the side wall of the mounting groove, and the pipeline mounting port is connected with the pipeline mounting port. The four sets of mounting plates are connected through buckles, buffer layers are arranged in the mounting grooves, sealing plates are arranged in the mounting grooves, openings are formed in the sealing plates, and the sealing plates are arranged on the sides, close to the mounting grooves, of the mounting plates; according to the utility model, the sealing ring is fixedly connected with the sealing plate to tightly hoop the air outlet pipeline, the sealing plate is fixed through the four groups of mounting plates, and the mounting plates are fixed through the quick-release structures, so that the Roots blowers with different specifications can be adapted only by replacing the sealing plate, and the assembly is convenient. The whole structure does not need to be redesigned and opened, so that the manufacturing cost is saved.

Description

Technical Field

[0001] This utility model relates to the field of blower technology, and in particular to a Roots blower with a low-noise casing. Background Technology

[0002] Roots blowers play an irreplaceable role as key gas conveying equipment in numerous fields such as industrial production, wastewater treatment, and pneumatic conveying. However, traditional Roots blowers have many technical defects in actual operation, the most prominent of which is noise pollution. The mechanical and aerodynamic noise generated by these blowers during operation often reaches 85-95 decibels, seriously affecting the working environment of operators and potentially causing noise disturbance to surrounding residential areas, leading to environmental complaints. With increasingly stringent environmental regulations in my country and the continuous improvement of public environmental awareness, the use of such high-noise equipment is facing increasing restrictions and challenges.

[0003] While existing technologies can reduce noise to some extent by adding soundproof enclosures to the outside of the fan, these measures often suffer from drawbacks such as complex structures, excessive space requirements, poor heat dissipation, and inconvenient maintenance. Especially under high-temperature conditions, soundproofing materials are prone to accelerated aging due to poor heat dissipation, which actually reduces noise reduction effectiveness and lifespan. Furthermore, traditional soundproofing structures are mostly fixed designs, making them difficult to adapt to different fan models and resulting in high retrofit costs. In terms of vibration control, ordinary vibration damping devices have limited effectiveness in suppressing low-frequency noise and lack effective control over airflow pulsation noise.

[0004] Therefore, there is an urgent need to develop a Roots blower structure with high efficiency in noise reduction, good heat dissipation performance and easy maintenance, in order to meet increasingly stringent environmental protection requirements and usage needs. Utility Model Content

[0005] In order to overcome the problems mentioned in the background art, the present invention provides a Roots blower with a low-noise casing.

[0006] The technical solution of this utility model is as follows: a Roots blower with a low-noise casing, comprising a blower body, an outer shell provided on the blower body, an installation groove provided on the shell, a pipe installation port provided inside the installation groove, four sets of installation plates provided inside the installation groove, the installation plates being hinged to the side wall of the installation groove, the four sets of installation plates being connected by snap fasteners, a buffer layer provided inside the installation groove, and a sealing plate provided inside the installation groove, the sealing plate having an opening, the sealing plate being located on the side of the installation plate close to the installation groove;

[0007] The mounting groove is used to install the air outlet duct of the fan body. The sealing plate is provided with a mounting shell on the side near the housing. An energy-absorbing bladder is provided inside the mounting shell. The opening passes through the energy-absorbing bladder. A sealing ring is provided on the air outlet duct of the fan body. The sealing ring is located inside the mounting shell and is in contact with the energy-absorbing bladder.

[0008] Preferably, the interior of the housing is provided with a noise reduction layer, which has a hollow structure, and a silicon-based vibration damping adhesive is provided between the noise reduction layer and the housing.

[0009] Preferably, an air intake pipe is connected to the top surface of the housing, the air intake pipe is sleeved outside the inlet silencer of the fan body, the air intake pipe is threaded to the housing, and a non-powered wind cap is connected to the top of the air intake pipe.

[0010] Preferably, an air outlet device is provided on the side wall of the housing, the air outlet device is connected to the housing, the air outlet device is configured as a labyrinth structure, and the inner wall of the air outlet device is provided with sound-absorbing cotton.

[0011] Preferably, the sidewall of the housing is provided with heat dissipation fins, the heat dissipation fins are configured in multiple groups, the heat dissipation fins are configured in an L-shaped structure, the heat dissipation fins penetrate the housing and are in contact with the inner wall of the housing.

[0012] Preferably, a mounting box is provided on the side wall of the housing, the heat dissipation fins are disposed inside the mounting box, a heat dissipation fan is provided on the bottom surface of the mounting box, and the top surface of the mounting box is configured as a hollow structure.

[0013] Preferably, a base is provided below the fan body, the fan body is fixedly connected to the base, multiple sets of fixing blocks are provided on the bottom surface of the housing, multiple sets of fixing holes are opened on the top surface of the base, and the fixing blocks are disposed inside the fixing holes.

[0014] The beneficial effects of this utility model are:

[0015] 1. The air outlet duct is secured by a sealing ring and a sealing plate. The sealing plate is fixed by four sets of mounting plates, which are fixed by a quick-release structure. This allows for adaptation to different specifications of Roots blowers by simply replacing the sealing plate, without the need to redesign the overall structure or open molds, thus saving manufacturing costs.

[0016] 2. By setting the sealing plate and the energy-absorbing bag to dynamically fill the gap, the noise of airflow leakage is blocked. The noise of the air outlet duct is transmitted to the sealing plate through vibration. The sealing plate squeezes the energy-absorbing bag, and the energy of the vibration is converted into the kinetic energy and internal energy of the energy-absorbing bag, thus achieving effective noise reduction and ultimately achieving efficient attenuation of overall noise.

[0017] 3. By connecting the air inlet with the towering inlet silencer of the Roots blower, the net height is reduced to accommodate more installation environments. At the same time, combining the air inlet of the Roots blower with the air inlet of the silent housing further saves space. Attached Figure Description

[0018] Figure 1 The diagram shown is a three-dimensional side cross-sectional view of the Roots blower with a low-noise casing according to this utility model.

[0019] Figure 2 The diagram shown is a three-dimensional cross-sectional view of the top surface of the casing of the Roots blower with a low-noise shell according to this utility model.

[0020] Figure 3 What is shown is Figure 3 A magnified structural diagram of the area within the middle circle;

[0021] Figure 4 The diagram shown is a three-dimensional view of the bottom surface of the Roots blower with a low-noise casing according to this utility model.

[0022] Figure 5 This is a three-dimensional cross-sectional view of the air outlet device in the Roots blower with a low-noise casing according to the present invention.

[0023] Explanation of reference numerals in the attached drawings: 1. Fan body; 2. Shell; 3. Mounting groove; 4. Pipe installation port; 5. Mounting plate; 6. Buffer layer; 7. Sealing plate; 8. Opening; 9. Mounting shell; 10. Energy-absorbing bag; 11. Sealing ring; 12. Noise reduction layer; 13. Silicon-based vibration damping rubber; 14. Air inlet pipe; 15. Non-powered fan cap; 16. Heat dissipation fins; 17. Mounting box; 18. Cooling fan; 19. Base; 20. Fixing block; 21. Fixing hole; 22. Air outlet device. Detailed Implementation

[0024] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0025] Please see Figures 1-5This utility model provides an embodiment of a Roots blower with a low-noise casing, comprising a blower body 1, an outer casing 2, a mounting groove 3 on the casing 2, a pipe mounting port 4 inside the mounting groove 3, four sets of mounting plates 5 inside the mounting groove 3, the mounting plates 5 being hinged to the side wall of the mounting groove 3, the four sets of mounting plates 5 being connected by snap-fit ​​connections, a buffer layer 6 inside the mounting groove 3, and a sealing plate 7 inside the mounting groove 3, the sealing plate 7 having an opening 8, and the sealing plate 7 being disposed in a mounting position. The mounting plate 5 is located on the side near the mounting groove 3; the mounting groove 3 is used to install the air outlet duct of the fan body 1; the sealing plate 7 is provided with a mounting shell 9 on the side near the housing, the mounting shell 9 is provided with an energy-absorbing bag 10 inside, the opening 8 passes through the energy-absorbing bag 10, a sealing ring 11 is provided on the air outlet duct of the fan body 1, the sealing ring 11 is located inside the mounting shell 9, and the sealing ring 11 is in contact with the energy-absorbing bag 10; the housing 2 is provided with a noise reduction layer 12 inside, the noise reduction layer 12 has a hollow structure, and a silicon-based vibration damping adhesive 13 is provided between the noise reduction layer 12 and the housing 2.

[0026] In this process, the airflow noise and mechanical vibration generated by the blower body 1 are first absorbed by the noise reduction layer 12 in the shell 2, which absorbs the mid-to-high frequency sound waves. At the same time, the silicon-based vibration damping rubber 13 suppresses the transmission of vibration. The air outlet duct is fixedly connected to the sealing plate 7 through the sealing ring 11. The sealing plate 7 is fixed by four sets of mounting plates 5, and the mounting plates 5 are fixed by a quick-release structure. Thus, for different specifications of Roots blowers, only the sealing plate 7 needs to be replaced for adaptation, without the need to redesign the overall structure and open the mold, saving manufacturing costs. At the same time, the sealing plate 7 and the energy-absorbing bag 10 work together to dynamically fill the gap, blocking the airflow leakage noise. The noise from the air outlet duct is transmitted to the sealing plate 7 through vibration. The sealing plate 7 squeezes the energy-absorbing bag 10, and the vibration energy is converted into the kinetic energy and internal energy of the energy-absorbing bag 10, achieving an effective noise reduction effect and ultimately achieving efficient attenuation of overall noise.

[0027] An air intake pipe 14 is connected to the top surface of the housing 2. The air intake pipe 14 is sleeved on the outside of the inlet silencer of the fan body 1. The air intake pipe 14 is threaded to the housing 2. A non-powered wind cap 15 is connected to the top of the air intake pipe 14. An air outlet device 22 is provided on the side wall of the housing 2. The air outlet device 22 is connected to the housing 2. The air outlet device 22 is set as a labyrinth structure. The inner wall of the air outlet device 22 is set with sound-absorbing cotton. Heat dissipation fins 16 are provided on the side wall of the housing 2. Multiple sets of heat dissipation fins 16 are set. The heat dissipation fins 16 are set as L-shaped structures. The heat dissipation fins 16 penetrate the housing 2 and abut against the inner wall of the housing 2. An installation box 17 is provided on the side wall of the housing 2. The heat dissipation fins 16 are set inside the installation box 17. A cooling fan 18 is provided on the bottom surface of the installation box 17. The top surface of the installation box 17 is set as a hollow structure.

[0028] When the blower body 1 is working, it drives air into the interior of the blower body 1 through the inlet silencer, thereby causing the air to enter the interior of the housing 2 through the non-powered wind cap 15. Part of the air enters the inlet silencer of the blower body 1, and the other part enters the interior of the housing 2. At the same time, under the action of the airflow of the powered wind cap, it rotates faster, which accelerates the airflow and accelerates the exhaust of the air inside the housing 2. Meanwhile, the inlet silencer of the blower body 1 is installed inside the air intake pipe 14, which can reduce the height of the housing 2, so that the Roots blower can be installed in places with limited height. The heat inside the housing 2 is simultaneously conducted to the interior of the mounting box through the heat dissipation fins 16, and is dissipated by the cooling fan 18, so as to achieve effective heat dissipation of the blower body 1.

[0029] A base 19 is provided below the fan body 1. The fan body 1 is fixedly connected to the base 19. Multiple sets of fixing blocks 20 are provided on the bottom surface of the housing 2. Multiple sets of fixing holes 21 are opened on the top surface of the base 19. The fixing blocks 20 are located inside the fixing holes 21.

[0030] The main body 1 of the fan is installed via the base 19, and the housing 2 is installed and disassembled quickly via the fixing block 20 and the fixing hole 21.

[0031] Working principle: Before use, during installation, the fixing block 20 of the housing 2 cooperates with the fixing hole 21 of the base 19 to achieve quick positioning and installation of the housing 2. The fan body 1 is rigidly connected to the base 19, while the housing 2 adopts a detachable design; the air outlet duct is fixedly connected to the sealing plate 7 through the sealing ring 11, and the sealing plate 7 is fixed by four sets of mounting plates 5.

[0032] During use, high-frequency sound waves are absorbed by the noise reduction layer 12 with a hollow structure inside the housing 2, and the silicon-based vibration damping adhesive 13 suppresses vibration transmission. The vibration of the air outlet duct squeezes the sealing plate 7, causing the energy-absorbing bag 10 to deform and convert vibration energy into internal energy. At the same time, the sealing ring 11 blocks airflow leakage noise.

[0033] Meanwhile, hot air rises through the gaps in the shell 2 and is accelerated out by the non-powered vent 15; the heat from the shell 2 is conducted to the mounting box through the L-shaped heat dissipation fins 16, and is forcibly dissipated by the cooling fan 18 to avoid the temperature rise affecting the performance of the noise reduction material.

[0034] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A Roots blower having a low noise housing, characterized by: Including fan main body (1), the outside of fan main body (1) is provided with shell (2), installation groove (3) is seted up on shell (2), pipe installation mouth (4) is seted up in the inside of installation groove (3), four groups of installation plate (5) are seted up in the inside of installation groove (3), installation plate (5) is hinged with the side wall of installation groove (3), four groups of installation plate (5) are connected through buckle, the inside of installation groove (3) is provided with buffer layer (6), the inside of installation groove (3) is provided with sealing plate (7), opening (8) is seted up on sealing plate (7), sealing plate (7) is seted up in the side of installation plate (5) close to installation groove (3), The installation groove (3) is used for installing the air outlet pipe of the fan main body (1), the side of the sealing plate (7) close to the shell (2) is provided with an installation shell (9), the inside of the installation shell (9) is provided with an energy absorption bag (10), the opening (8) penetrates the energy absorption bag (10), the air outlet pipe of the fan main body (1) is provided with a sealing ring (11), the sealing ring (11) is arranged in the inside of the installation shell (9), and the sealing ring (11) is in abutting connection with the energy absorption bag (10).

2. A Roots blower having a low noise housing as claimed in claim 1 wherein: The inside of the shell (2) is provided with a noise reduction layer (12), the noise reduction layer (12) is a hollow structure, and the noise reduction layer (12) is provided with a silicon-based damping glue (13) between the shell (2).

3. A Roots blower having a low noise housing as claimed in claim 1 wherein: The top surface of the shell (2) is connected with an air inlet pipe (14), the air inlet pipe (14) is sleeved outside the air inlet silencer of the fan main body (1), the air inlet pipe (14) is in threaded connection with the shell (2), and the top end of the air inlet pipe (14) is connected with a non-powered air cap (15).

4. A Roots blower having a low noise housing as claimed in claim 1 wherein: The side wall of the shell (2) is provided with an air outlet device (22), the air outlet device (22) is in through connection with the shell (2), the air outlet device (22) is arranged as a labyrinth structure, and the inner wall of the air outlet device (22) is provided with sound-absorbing cotton.

5. A Roots blower having a low noise housing as claimed in claim 1 wherein: The side wall of the shell (2) is provided with a heat dissipation fin (16), the heat dissipation fin (16) is arranged in multiple groups, the heat dissipation fin (16) is arranged in an L-shaped structure, and the heat dissipation fin (16) penetrates the shell (2) and is in abutting connection with the inner wall of the shell (2).

6. A Roots blower having a low noise housing according to claim 5, characterized in that: The side wall of the shell (2) is provided with a mounting box (17), the heat dissipation fin (16) is arranged in the inside of the mounting box (17), the bottom surface of the mounting box (17) is provided with a heat dissipation fan (18), and the top surface of the mounting box (17) is arranged in a hollow structure.

7. A Roots blower having a low noise housing as claimed in claim 1 wherein: The bottom of the fan main body (1) is provided with a base (19), the fan main body (1) is fixedly connected with the base (19), the bottom surface of the shell (2) is provided with multiple fixing blocks (20), the top surface of the base (19) is provided with multiple fixing holes (21), and the fixing blocks (20) are arranged in the inside of the fixing holes (21).

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