Low-noise roots blower

Abstract

The low-noise roots blower comprises a main body, a flow direction switching mechanism and a damping mechanism, the flow direction switching mechanism comprises an external connection pipe, a sealing gasket, a silencing pipe, an inner pipe, a sealing rubber ring and a fixing mechanism, and the fixing mechanism comprises a clamping block, an extrusion disc, a spring and a limiting disc. The shock absorption mechanism comprises a shock absorption box, a dowel bar, a stress plate, a connecting rod, a sliding block and a shock absorption damper, under the mutual cooperation of the mechanisms, the device can adjust an airflow path according to actual application requirements, higher system layout flexibility and adaptability are provided, and the device is easy to install, so that the installation and maintenance time is greatly shortened, and the production efficiency is improved. Meanwhile, vibration generated during operation of the air blower can be reduced, the stability of the machine can be remarkably improved, and vibration reduction means that noise and discomfort caused by machine operation are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of blower noise reduction, and specifically relates to a low-noise Roots blower. Background Technique

[0002] Roots blowers are widely used in multiple industries and fields due to their structural characteristics and efficient air delivery capabilities. Such blowers are mainly used to provide or increase the pressure and flow rate of gas flow, and are particularly suitable for occasions that require a large amount of air circulation.

[0003] However, traditional Roots blowers do not have efficient air flow control, and the lack of the ability to flexibly adjust the air flow direction may limit the flexibility of the system layout, making it difficult to adapt to specific installation spaces or configuration requirements.

[0004] Secondly, the vibration of mechanical operation may cause the vibration of the equipment to increase during operation. This not only affects the stability and service life of the machine, but also the increased vibration is usually accompanied by a higher noise level, which may cause discomfort in the working environment and affect the comfort and work efficiency of the operator. Content of the Utility Model

[0005] (1) Technical Problems to be Solved

[0006] In view of the deficiencies of the prior art, the utility model provides a low-noise Roots blower.

[0007] (2) Technical Solutions

[0008] To achieve the above object, the utility model provides the following technical solutions: A low-noise Roots blower includes a main body, a flow direction conversion mechanism, and a shock absorption mechanism. The flow direction conversion mechanism includes an outer connecting pipe, a sealing gasket, a silencing pipe, an inner pipe, a sealing rubber ring, and a fixing mechanism. The outer connecting pipe is detachably connected to the main body. The sealing gasket is installed at the connection between the connecting pipe and the main body. The silencing pipe is detachably connected to the outer connecting pipe. The inner pipe is arranged inside the outer connecting pipe. The sealing rubber ring is fixedly installed on the inner pipe. The fixing mechanism includes a clamping block, a pressing disc, a spring, and a limiting disc. The clamping blocks are distributed in a circular pattern on the silencing pipe. The pressing disc is installed inside the outer connecting pipe and is slidably connected to the outer connecting pipe. The spring is installed at the bottom of the pressing disc and is fixedly connected to the pressing disc and the outer connecting pipe at both ends. The limiting disc is fixedly arranged on the silencing pipe.

[0009] Preferably, the shock absorption mechanism includes a shock absorption box, a force transmission rod, a force receiving plate, a connecting rod, a slider, and a shock absorption damper. The main body is installed inside the shock absorption box. The force transmission rod is arranged at the bottom end of the main body. The force receiving plate is fixedly installed at the bottom end of the force transmission rod. The force receiving plate is rotatably connected to the connecting rod. The slider is installed inside the shock absorption box and is rotatably connected to the connecting rod. The shock absorption damper is fixedly installed inside the shock absorption box, and one end of it is fixedly connected to the slider.

[0010] Preferably further, the main body includes a blower, an air inlet pipe, an exhaust pipe and a chassis. Bolts are installed on the external connecting pipe and the air inlet pipe, and the external connecting pipe and the air inlet pipe are detachably connected by bolts, which is convenient for replacing the external connecting pipe and ensuring connection sealing.

[0011] Preferably further, a fixed card slot and an access hole are provided inside the external connecting pipe. The clamping block enters the inside of the external connecting pipe through the access hole and is detachably connected to the fixed card slot, which is convenient for rotating the silencing pipe, thereby changing the air flow inlet direction.

[0012] Preferably further, a limiting block is provided on the pressing disc, and a limiting sliding groove is provided inside the external connecting pipe. The limiting block slides inside the limiting sliding groove, which is convenient for limiting the pressing disc and avoiding displacement deviation caused by the spring force.

[0013] Preferably further, a damping sliding groove is provided inside the damping box. The damping dampers are installed on both sides of the damping box, and the sliding blocks slide inside the damping sliding groove, which is convenient for the normal operation of the damping mechanism.

[0014] Preferably further, ventilation holes are provided on the damping box, and the ventilation holes are provided at both ends of the damping box, which is convenient for reducing the heat generated between the damping damper and the force transmission rod inside the damping box due to energy transfer.

[0015] Preferably further, a driving motor and a transmission belt are provided on the chassis. Both ends of the transmission belt are respectively installed on the motor output end and the blower input end, which is convenient for driving the blower and, at the same time, balancing the weight on the chassis by comparison.

[0016] (III) Beneficial effects

[0017] Compared with the prior art, the present utility model provides a low-noise Roots blower, which has the following

[0018] Beneficial effects:

[0019] In the present utility model, by setting a flow direction conversion mechanism, with the mutual cooperation of components such as the external connecting pipe, the sealing gasket, the silencing pipe, the inner pipe, the sealing rubber ring and the fixing mechanism, the device can adjust the air flow path according to actual application requirements, which provides higher system layout flexibility and adaptability, and the device is also easy to install, thus greatly reducing the installation and maintenance time and improving work efficiency.

[0020] In the present utility model, by setting a fixing mechanism, with the mutual cooperation of components such as the clamping block, the pressing disc, the spring and the limiting disc, the device can fix the silencing pipeline, thereby cooperating with the flow direction conversion mechanism to adjust the air flow direction, reduce noise generation, and ensure stable connection sealing.

[0021] In the present utility model, by providing a shock absorption mechanism including a shock absorption box, a force transmission rod, a force receiving plate, a connecting rod, a slider and a shock absorption damper, the device can reduce the vibration during the operation of the blower, significantly improve the stability of the machine, and at the same time, reducing vibration means reducing noise and discomfort caused by the operation of the machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of a low-noise Roots blower in the present utility model;

[0023] Figure 2 It is an exploded view of the flow direction conversion mechanism in the present utility model;

[0024] Figure 3 It is a cross-sectional view of the internal structure of the outer connecting pipe in the present utility model;

[0025] Figure 4 is Figure 3 a partial view of A in

[0026] Figure 5 It is a schematic diagram of the internal structure of the shock absorption box in the present utility model.

[0027] In the figure: 1, main body; 2, outer connecting pipe; 3, sealing gasket; 4, silencing pipe; 5, inner pipe; 6, sealing rubber ring; 7, clamping block; 8, extrusion disc; 9, spring; 10, limiting disc; 11, shock absorption box; 12, force transmission rod; 13, force receiving plate; 14, connecting rod; 15, slider; 16, shock absorption damper; 17, blower; 18, intake pipe; 19, exhaust pipe; 20, chassis; 21, fixed card slot; 22, inlet hole; 23, limiting block; 24, limiting sliding groove; 25, shock absorption sliding groove; 26, ventilation hole; 27, drive motor; 28, transmission belt. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0028] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0029] Embodiment 1:

[0030] Please refer to Figures 1-5, a low-noise Roots blower, comprising a main body 1, a flow direction conversion mechanism and a shock absorption mechanism. The flow direction conversion mechanism includes an outer connecting pipe 2, a sealing gasket 3, a silencing pipe 4, an inner pipe 5, a sealing rubber ring 6 and a fixing mechanism. The outer connecting pipe 2 is detachably connected to the main body 1. The sealing gasket 3 is installed at the connection between the connecting pipe and the main body 1. The silencing pipe 4 and the outer connecting pipe 2 are detachably connected. The inner pipe 5 is arranged inside the outer connecting pipe 2. The sealing rubber ring 6 is fixedly installed on the inner pipe 5. The fixing mechanism includes a clamping block 7, a pressing disc 8, a spring 9 and a limiting disc 10. The clamping blocks 7 are distributed in a circular pattern on the silencing pipe 4. The pressing disc 8 is installed inside the outer connecting pipe 2 and is slidably connected to the outer connecting pipe 2. The spring 9 is installed at the bottom of the pressing disc 8 and is fixedly connected to the pressing disc 8 and the outer connecting pipe 2 at both ends. The limiting disc 10 is fixedly arranged on the silencing pipe 4.

[0031] In this embodiment, the flow direction conversion mechanism includes an outer connecting pipe 2, a sealing gasket 3, a silencing pipe 4, an inner pipe 5, a sealing rubber ring 6 and a fixing mechanism. The fixing mechanism includes a clamping block 7, a pressing disc 8, a spring 9 and a limiting disc 10. During use, the outer connecting pipe 2 is hermetically connected to the air inlet through bolts and the sealing gasket 3. Then, pick up the silencing pipe 4, align it with the opening of the outer connecting pipe 2, and make the clamping blocks 7 on the silencing pipe 4 align with the inlet holes 22 on the outer connecting pipe 2, and insert it into the outer connecting pipe 2. When the silencing pipe 4 is inserted, it first contacts the pressing disc 8, and then continuously presses. The pressing disc 8 slides inside the outer connecting pipe 2 and compresses the spring 9. During this process, the limiting blocks 23 on the pressing disc 8 slide in the limiting chutes 24. When the limiting disc 10 on the silencing pipe 4 contacts the port of the outer connecting pipe 2, at this time, rotate the silencing pipe 4. Under the action of the spring 9, the pressing disc 8 presses the clamping blocks 7 and pushes the rotating clamping blocks 7 into the fixing slots 21 inside the outer connecting pipe 2. At this time, the fixing is completed. And when the silencing pipe 4 enters the outer connecting pipe 2, the inner pipe 5 is inserted into the silencing pipe 4 and brings the sealing rubber ring 6 into the silencing pipe 4 to make the connection sealed, ensuring that no air leakage will occur and no noise will be generated.

[0032] In this embodiment, the shock absorption mechanism includes a shock absorption box 11, a force transmission rod 12, a force receiving plate 13, a connecting rod 14, a slider 15 and a shock absorption damper 16. During use, the shock absorption damper 16 is activated and driven by a driving motor 27, which drives a transmission belt 28 to cause the internal operation of the fan 17. At this time, the operation of the driving motor 27 and the fan 17 cause the main body 1 to vibrate, driving the chassis 20 and transmitting the vibration to the force transmission rod 12. After receiving energy on the force transmission rod 12, it is converted into heat, and the remaining kinetic energy is transmitted to the force receiving plate 13. Then, the connecting rod 14 transmits the energy to the slider 15. The slider 15 located inside the shock absorption chute 25 slides, causing the shock absorption damper 16 to operate and dissipate the kinetic energy therein. This process is repeated. Due to the slight and extremely high-frequency vibration, there is a concern that the temperature inside the shock absorption box 11 is too high, which may affect the normal operation of the device. Therefore, ventilation holes 26 are provided outside the shock absorption box 11 to enable the rapid exchange of internal heat with the outside. During the operation of the device, air enters through the sound-absorbing pipe 4 installed on the intake pipe 18 and is discharged through the exhaust pipe 19.

[0033] Embodiment 2:

[0034] In summary, during use, the external connecting pipe 2 is hermetically connected to the air inlet through bolts and gaskets 3. Then, pick up the muffler pipe 4, align it with the external connecting pipe 2, and make the clamping block 7 on the muffler pipe 4 align with the inlet hole 22 on the external connecting pipe 2, and insert it into the external connecting pipe 2. When the muffler pipe 4 is inserted, it first contacts the extrusion disc 8, and then continuously presses. The extrusion disc 8 slides inside the external connecting pipe 2 and compresses the compression spring 9. During this process, the limiting block 23 on the extrusion disc 8 slides in the limiting chute 24. When the limiting disc 10 on the muffler pipe 4 contacts the port of the external connecting pipe 2, at this time, rotate the muffler pipe 4. Under the action of the spring 9, the extrusion disc 8 squeezes the clamping block 7 and pushes the rotating clamping block 7 into the fixed clamping groove 21 inside the external connecting pipe 2. At this time, the fixing is completed. And when the muffler pipe 4 enters the external connecting pipe 2, the inner pipe 5 is inserted into the muffler pipe 4 and enters the muffler pipe 4 with the sealing rubber ring 6, making it connected and sealed. First, start the shock damping 16 inside the shock damping box 11, which is driven by the driving motor 27, driving the transmission belt 28, thus enabling the internal operation of the fan 17. At this time, the operation of the driving motor 27 and the operation of the fan 17 cause the main body 1 to vibrate, driving the chassis 20 and transmitting it to the force transmission rod 12. The energy received by the force transmission rod 12 is converted into heat, and the remaining kinetic energy is transmitted to the stress plate 13, and the energy is transmitted to the slider 15 by the connecting rod 14. The slider 15 located inside the shock damping chute 25 slides, causing the shock damping 16 to operate and digest the kinetic energy therein. Such a process is repeated. Due to the slight and extremely high-frequency vibration, there is a concern that the temperature inside the shock damping box 11 is too high, affecting the normal operation of the device. Therefore, ventilation holes 26 are provided outside the shock damping box 11 to enable the rapid exchange of internal heat with the outside world. During the operation of the device, air enters through the muffler pipe 4 installed on the intake pipe 18 and is discharged through the exhaust pipe 19. With the mutual cooperation of the above mechanisms, the noise generated by this device is greatly reduced compared to the past.

[0035] Among all the solutions mentioned above, for the connection between two components, welding, connection with bolts and nuts, connection with bolts or screws, or other well-known connection methods can be selected according to the actual situation, which will not be elaborated here one by one. For those mentioned above that involve fixed connection, welding is preferably considered. Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A low-noise Roots blower, comprising a main body (1), a flow direction conversion mechanism and a shock absorption mechanism, characterized in that, The flow direction conversion mechanism includes an outer connecting pipe (2), a gasket (3), a silencing pipe (4), an inner pipe (5), a sealing rubber ring (6) and a fixing mechanism. The outer connecting pipe (2) is detachably connected to the main body (1). The gasket (3) is installed at the connection between the connecting pipe and the main body (1). The silencing pipe (4) is detachably connected to the outer connecting pipe (2). The inner pipe (5) is arranged inside the outer connecting pipe (2). The sealing rubber ring (6) is fixedly installed on the inner pipe (5). The fixing mechanism includes a clamping block (7), a pressing disc (8), a spring (9) and a limiting disc (10). The clamping blocks (7) are distributed in a circular pattern on the silencing pipe (4). The pressing disc (8) is installed inside the outer connecting pipe (2) and is slidably connected to the outer connecting pipe (2). The spring (9) is installed at the bottom of the pressing disc (8) and is fixedly connected to the pressing disc (8) and the outer connecting pipe (2) at both ends. The limiting disc (10) is fixedly arranged on the silencing pipe (4).

2. The roots blower with low noise according to claim 1, characterized in that: The shock absorption mechanism includes a shock absorption box (11), a force transmission rod (12), a force receiving plate (13), a connecting rod (14), a slider (15) and a shock absorption damper (16). The main body (1) is installed inside the shock absorption box (11). The force transmission rod (12) is arranged at the bottom end of the main body (1). The force receiving plate (13) is fixedly installed at the bottom end of the force transmission rod (12). The force receiving plate (13) is rotatably connected to the connecting rod (14). The slider (15) is installed inside the shock absorption box (11) and is rotatably connected to the connecting rod (14). The shock absorption damper (16) is fixedly installed inside the shock absorption box (11), and one end of it is fixedly connected to the slider (15).

3. The roots blower with low noise according to claim 2, characterized in that: The main body (1) includes a fan (17), an air inlet pipe (18), an exhaust pipe (19) and a chassis (20). Bolts are installed on the outer connecting pipe (2) and the air inlet pipe (18), and the outer connecting pipe (2) and the air inlet pipe (18) are detachably connected by bolts.

4. A low-noise Roots blower according to claim 1, characterized in that: The inner part of the outer connecting pipe (2) is provided with a fixed card slot (21) and an access hole (22). The clamping block (7) enters the inner part of the outer connecting pipe (2) through the access hole (22) and is detachably connected to the fixed card slot (21).

5. The roots blower with low noise according to claim 1, wherein: The pressing disc (8) is provided with a limiting block (23). The inner part of the outer connecting pipe (2) is provided with a limiting sliding groove (24). The limiting block (23) slides inside the limiting sliding groove (24).

6. The low-noise Roots blower according to claim 2, characterized in that: The inner part of the shock absorption box (11) is provided with a shock absorption sliding groove (25). The shock absorption damper (16) is installed on both sides of the shock absorption box (11). The slider (15) slides inside the shock absorption sliding groove (25).

7. The low-noise Roots blower according to claim 2, characterized in that: Vent holes (26) are opened on the shock absorption box (11), and the vent holes (26) are opened at both ends of the shock absorption box (11).

8. The low-noise Roots blower according to claim 3, characterized in that: A driving motor (27) and a transmission belt (28) are arranged on the chassis (20). Both ends of the transmission belt (28) are respectively installed at the output end of the driving motor (27) and the input end of the fan (17).

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