CN210565076U - Low-noise roots blower - Google Patents

Abstract

The utility model relates to a roots blower technical field just discloses a low noise roots blower, the on-line screen storage device comprises a base, the positive fixed mounting of base has the motor, the positive fixed mounting of base has the protecting crust that is located the motor top, the positive fixed mounting of base has the shell that is located the left side of motor and is located the protecting crust below, the outside cladding of shell has the sound insulation cover, the bottom fixed mounting of shell has the lower cover, the bottom fixed mounting of shell has the upper cover, the inside movable mounting of shell has the top to run through the inside and the bottom that the upper cover extends to the protecting crust and extends to the inside driving shaft of lower cover. This low noise roots blower, the noise that the during operation produced obtains great weakening and reduces, and the noise reduction propagates to the energy that the external world was brought, reduces the harm that produces staff's health, need not to use special muffler to dock the amortization simultaneously, has reduced the required cost expenditure of production.

Description

Low-noise roots blower

Technical Field

The utility model relates to a roots blower technical field specifically is a low noise roots blower.

Background

The Roots blower is a volume rotary blower, the compressor keeps two rotors meshed by a synchronous gear at the shaft end of the rotor, each concave curved surface part on the rotor and the inner wall of a cylinder form a working volume, gas is taken away from an air suction port in the rotary process of the rotor, when the rotor moves to the instant that the vicinity of an exhaust port is communicated with the exhaust port, the pressure in the working volume is suddenly increased due to the backflow of the gas with higher pressure, then the gas is conveyed to an exhaust passage, the two rotors are not contacted with each other, and the sealing is realized by a tightly controlled gap between the two rotors, so the exhausted gas is not polluted by lubricating oil.

The traditional roots blower has larger noise when in use, easily causes noise pollution to the surrounding environment, influences the health of workers, often needs to dock a special roots blower silencer to reduce noise for a large-scale roots blower, increases the cost in production, and provides a low-noise roots blower to solve the problem.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The utility model provides a not enough to prior art, the utility model provides a low noise roots blower possesses advantages such as low noise, has solved traditional roots blower and has great noise when using, causes noise pollution to the surrounding environment easily, influences the healthy of staff, often needs to dock dedicated roots blower muffler to large-scale roots blower and falls to make an uproar, has increased the problem of the cost expenditure in the production.

(II) technical scheme

For the purpose of realizing above-mentioned low noise, the utility model provides a following technical scheme: a low-noise Roots blower comprises a base, wherein a motor is fixedly mounted on the front of the base, a protective shell positioned above the motor is fixedly mounted on the front of the base, a shell positioned on the left side of the motor and positioned below the protective shell is fixedly mounted on the front of the base, a sound insulation sleeve is wrapped outside the shell, a lower cover is fixedly mounted at the bottom of the shell, an upper cover is fixedly mounted at the bottom of the shell, a driving shaft is movably mounted inside the shell, the top end of the driving shaft penetrates through the upper cover and extends into the protective shell, the bottom end of the driving shaft extends into the lower cover, a driven shaft is movably mounted inside the shell, the right end of the driven shaft extends into the lower cover, a first gear positioned inside the lower cover is fixedly mounted on the outside of the driving shaft, a second gear which is positioned inside the lower cover and is meshed with the first gear is fixedly mounted on the, the utility model discloses a motor, including driving shaft, blast pipe, connecting pipe, sound absorbing cotton, the inside rotor that is located the shell is all overlapped in the outside of driving shaft and driven shaft, the output of motor is connected through the inside drive belt transmission that is located the protecting crust with the top of driving shaft, the bottom intercommunication of shell has the blast pipe that extends to the base below, the top intercommunication of shell has the connecting pipe, the inner wall of blast pipe bonds and has the sound absorbing cotton, the inner wall fixed mounting who inhales the sound cotton has the abat.

Preferably, the outside fixed mounting of motor has the fixing base with base fixed connection, the equal fixed mounting in output of motor and the top of driving shaft has the belt pulley.

Preferably, the front surface of the connecting pipe is provided with fixing holes which are distributed in an annular equal angle mode, and the inner diameter of the connecting pipe is smaller than the distance between the opposite sides of the driving shaft and the driven shaft.

Preferably, the back fixed mounting of shell has the quantity to be two and run through the connecting foot of sound insulation cover, the mounting hole has all been seted up at the back of connecting the foot.

Preferably, the rotor is arranged at ninety degrees relatively, and the driving shaft, the driven shaft and the shell are movably connected through sealed bearings.

Preferably, the inner wall of the sound-absorbing plate is provided with densely distributed pores, and the sound-insulating sleeve is a rubber sleeve.

(III) advantageous effects

Compared with the prior art, the utility model provides a low noise roots blower possesses following beneficial effect:

the low-noise Roots blower is used, a motor is started, a driving shaft is driven to rotate through a driving belt, the driving shaft drives a driven shaft to rotate through a first gear and a second gear, so that two rotors rotate towards opposite sides, air in a connecting pipe is sucked into a shell and then is discharged from an exhaust pipe, in the working process of the blower, noise generated by internal mechanical collision and air collision is transmitted to the shell, the noise is absorbed by a sound insulation sleeve outside the shell and rebounded, the propagation of the noise through outside air is avoided, meanwhile, the noise discharged from the exhaust pipe along with the flow of the air enters the inside of sound absorption cotton through a sound absorption plate in the outflow process, the noise is weakened and absorbed, the energy carried by the noise is reduced, the noise generated in the working process is greatly weakened and reduced, and the energy carried by the noise transmitted to the outside is reduced, the harm to the staff's health production is reduced, need not to use special muffler simultaneously to dock the amortization, has reduced the required cost expenditure of production.

Drawings

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is a front view of the present invention;

FIG. 3 is a rear view of the housing of the present invention;

fig. 4 is a cross-sectional view of the right structure of the exhaust pipe of the present invention.

In the figure: the sound absorption device comprises a base 1, a motor 2, a protective shell 3, a shell 4, a sound insulation sleeve 5, a lower cover 6, an upper cover 7, a driving shaft 8, a driven shaft 9, a first gear 10, a second gear 11, a rotor 12, a driving belt 13, an exhaust pipe 14, a connecting pipe 15, sound absorption cotton 16 and a sound absorption board 17.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, a low-noise roots blower comprises a base 1, a motor 2 is fixedly mounted on the front of the base 1, the motor 2 can be 35BYG250B-0081 in type, a protective shell 3 positioned above the motor 2 is fixedly mounted on the front of the base 1, a shell 4 positioned on the left side of the motor 2 and below the protective shell 3 is fixedly mounted on the front of the base 1, a sound insulation sleeve 5 is wrapped on the outer portion of the shell 4, two connecting pins penetrating through the sound insulation sleeve 5 are fixedly mounted on the back of the shell 4, mounting holes are formed in the back of the connecting pins, a lower cover 6 is fixedly mounted on the bottom of the shell 4, an upper cover 7 is fixedly mounted on the bottom of the shell 4, a driving shaft 8 is movably mounted inside the shell 4, the top end of the driving shaft penetrates through the upper cover 7 and extends to the inner portion of the protective shell 3, the bottom end of the driving shaft extends to the inner portion of the lower, the output end of the motor 2 and the top end of the driving shaft 8 are both fixedly provided with belt pulleys, the inside of the shell 4 is movably provided with a driven shaft 9 which is positioned on the right side of the driving shaft 8, the bottom end of the driven shaft extends to the inside of the lower cover 6, the front surface of the connecting pipe 15 is provided with fixing holes which are distributed in an annular shape with equal angles, the inner diameter of the connecting pipe 15 is smaller than the distance between the opposite sides of the driving shaft 8 and the driven shaft 9, the outside of the driving shaft 8 is fixedly provided with a first gear 10 which is positioned inside the lower cover 6, the outside of the bottom end of the driven shaft 9 is fixedly provided with a second gear 11 which is positioned inside the lower cover 6 and meshed with the first gear 10, the outside of the driving shaft 8 and the driven shaft 9 are both sheathed with a rotor 12 which is positioned inside the shell 4, the rotors 12 are arranged at opposite ninety degrees, the driving shaft, the bottom of the shell 4 is communicated with an exhaust pipe 14 extending to the lower part of the base 1, the top of the shell 4 is communicated with a connecting pipe 15, the inner wall of the exhaust pipe 14 is bonded with sound-absorbing cotton 16, the inner wall of the sound-absorbing cotton 16 is fixedly provided with a sound-absorbing plate 17 fixedly connected with the exhaust pipe 14, the inner wall of the sound-absorbing plate 17 is provided with densely distributed pores, the sound-insulating sleeve 5 is a rubber sleeve, when in use, the motor 2 is started, the driving shaft 8 is driven to rotate by a driving belt 13, the driving shaft 8 drives a driven shaft 9 to rotate by a first gear 10 and a second gear 11, so that the two rotors 12 rotate towards opposite sides, air in the connecting pipe 15 is sucked into the shell 4 and then discharged from the exhaust pipe 14, and in the working process of the blower, noise generated by internal mechanical collision and air collision is transmitted to the shell 4 and is absorbed by the, avoid it to propagate through the external air, simultaneously along with the air flow from exhaust pipe 14 exhaust noise, will be at the outflow in-process, get into through abatvoix 17 and inhale the inside of sound cotton 16, weaken and absorb the noise, the energy that the noise reduction carried, make the noise that the during operation produced obtain great weakening reduce, the noise reduction propagates the energy that has to the external world, reduce the harm that produces staff's health, need not to use special muffler to dock the amortization simultaneously, the required cost expenditure of production has been reduced.

In conclusion, when the low-noise roots blower is used, the motor 2 is started, the driving shaft 8 is driven to rotate through the driving belt 13, the driving shaft 8 drives the driven shaft 9 to rotate through the first gear 10 and the second gear 11, so that the two rotors 12 rotate towards opposite sides, air in the connecting pipe 15 is sucked into the shell 4 and then is exhausted from the exhaust pipe 14, noise generated by internal mechanical collision and air collision is transmitted to the shell 4 and absorbed by the sound insulation sleeve 5 outside the shell 4 and rebounded to avoid being transmitted through external air, meanwhile, noise exhausted from the exhaust pipe 14 along with air flow enters the sound insulation cotton 16 through the sound insulation plate 17 in the outflow process, noise is weakened and absorbed, energy carried by the noise is reduced, and the noise generated in the working process is greatly weakened and reduced, the noise reduction is propagated to the energy that has externally, reduce the harm that produces staff's health, need not to use special muffler to dock the amortization simultaneously, the required cost expenditure of production has been reduced, it has great noise to have solved traditional roots blower when using, cause noise pollution to the surrounding environment easily, influence staff's healthy, often need dock dedicated roots blower muffler to large-scale roots blower and fall and make an uproar, the problem of the cost expenditure in the production has been increased.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (6)

1. The utility model provides a low noise roots blower, includes base (1), its characterized in that: the motor (2) is fixedly mounted on the front of the base (1), the protective shell (3) positioned above the motor (2) is fixedly mounted on the front of the base (1), the shell (4) positioned on the left side of the motor (2) and below the protective shell (3) is fixedly mounted on the front of the base (1), the sound insulation sleeve (5) is wrapped on the outer portion of the shell (4), the lower cover (6) is fixedly mounted on the bottom of the shell (4), the upper cover (7) is fixedly mounted on the bottom of the shell (4), the top end of the inner movable mounting of the shell (4) penetrates through the upper cover (7) and extends to the inner portion of the protective shell (3), the bottom end of the inner movable mounting of the shell (4) extends to the inner portion of the lower cover (6), the driven shaft (9) positioned on the right side of the driving shaft (8) and extending to the inner portion of the lower cover (6) is, a first gear (10) positioned in the lower cover (6) is fixedly arranged outside the driving shaft (8), a second gear (11) which is positioned in the lower cover (6) and is meshed with the first gear (10) is fixedly arranged outside the bottom end of the driven shaft (9), the outer parts of the driving shaft (8) and the driven shaft (9) are sleeved with rotors (12) positioned in the shell (4), the output end of the motor (2) is in transmission connection with the top end of the driving shaft (8) through a transmission belt (13) positioned in the protective shell (3), the bottom of the shell (4) is communicated with an exhaust pipe (14) extending to the lower part of the base (1), the top of the shell (4) is communicated with a connecting pipe (15), the inner wall of the exhaust pipe (14) is bonded with sound-absorbing cotton (16), and a sound absorption plate (17) fixedly connected with the exhaust pipe (14) is fixedly arranged on the inner wall of the sound absorption cotton (16).

2. The low noise roots blower of claim 1, wherein: the outer fixed mounting of motor (2) has the fixing base with base (1) fixed connection, the equal fixed mounting in output of motor (2) and the top of driving shaft (8) has the belt pulley.

3. The low noise roots blower of claim 1, wherein: the front surface of the connecting pipe (15) is provided with fixing holes which are distributed in an annular equal angle mode, and the inner diameter of the connecting pipe (15) is smaller than the distance between the opposite sides of the driving shaft (8) and the driven shaft (9).

4. The low noise roots blower of claim 1, wherein: the back fixed mounting of shell (4) has the quantity to be two and runs through the connection foot of sound insulation cover (5), the mounting hole has all been seted up at the back of connecting the foot.

5. The low noise roots blower of claim 1, wherein: the rotor (12) is arranged at ninety degrees relatively, and the driving shaft (8) is movably connected with the driven shaft (9) and the shell (4) through a sealing bearing.

6. The low noise roots blower of claim 1, wherein: the inner wall of the sound-absorbing board (17) is provided with densely distributed pores, and the sound-insulating sleeve (5) is a rubber sleeve.

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