Roots blower with sound reduction structure

Abstract

The application relates to the technical field of air blower, in particular to a Roots air blower with a sound elimination structure, which comprises a supporting mechanism, an exhaust pipe fixing mechanism, a first ventilation sound elimination mechanism, a second ventilation sound elimination mechanism, a displacement mechanism and an air blower body, the supporting mechanism comprises a limiting base, a damping ventilation structure is arranged in the limiting base, and a limiting frame for limiting is arranged on the damping ventilation structure. In the application, the third servo motor is controlled, the rack can control the rotation of the fourth gear and the fifth gear, the included angle between two adjacent first sound elimination plates and second sound elimination plates can be adjusted, the ventilation efficiency of the first ventilation opening and the third ventilation opening is controllable, the staggered arrangement of the multiple first sound elimination plates and second sound elimination plates can weaken the noise, and the noise reduction capacity is improved while ventilation.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of air blower, in particular to a Roots air blower with sound reduction structure. BACKGROUND

[0002] Roots air blower has the characteristics of high work efficiency, small size, simple maintenance and long service life, so it is excellent in many use scenarios of industry and agriculture, and is used in large quantities. However, due to the vibration and friction of the internal mechanical structure and the external shell of the Roots air blower, as well as the air vibration of the air inlet and outlet, the Roots air blower will produce noise during use, which will cause noise pollution and harm human health. Therefore, it is necessary to reduce noise. The common noise reduction method is to install a silencer on the air inlet and outlet, and then install a sound reduction cover outside the fan. The problem of setting the sound reduction cover is that the ventilation efficiency will be reduced, and when the working temperature of the fan increases, the noise generated by the internal operation of the fan will increase, causing noise pollution. SUMMARY

[0003] The purpose of the present application is to provide a Roots air blower with sound reduction structure.

[0004] The purpose of the present application can be achieved by the following technical solutions:

[0005] A Roots air blower with sound reduction structure, comprising a supporting mechanism, an exhaust pipe fixing mechanism, a first ventilation sound reduction mechanism, a second ventilation sound reduction mechanism, a displacement mechanism and an air blower body, the supporting mechanism comprises a limiting base, a damping ventilation structure is arranged in the limiting base, and a limiting frame for limiting is arranged on the damping ventilation structure;

[0006] The exhaust pipe fixing mechanism comprises a first sound reduction shell fixed to the inner side of one end of the limiting frame, and a noise reduction structure for reducing the noise emission of the air blower exhaust port sound reduction pipe is arranged in the first sound reduction shell;

[0007] The first ventilation silencing mechanism comprises a second silencing shell slidingly sleeved outside the first silencing shell, and a first ventilation opening is formed at the top of the second silencing shell; the second ventilation silencing mechanism comprises a third silencing shell, and a third ventilation opening is formed at the top of the third silencing shell; the two sides of the third silencing shell are provided with a connecting structure for controlling the connection of the second silencing shell; the top of the second silencing shell and the top of the third silencing shell are provided with a ventilation silencing structure for controlling the air inlet efficiency of the ventilation opening; a plurality of second ventilation openings are formed in the top of the second silencing shell, and a baffle rotatingly connected to the top of the second silencing shell is arranged in each second ventilation opening; an inner cavity is formed in one side of the top of the second silencing shell and the top of the third silencing shell, and a driving structure for controlling the ventilation silencing structure and the baffle is arranged in the inner cavity.

[0008] The displacement mechanism comprises a fourth silencing shell slidingly sleeved inside the third silencing shell.

[0009] Further, the ventilation silencing structure comprises a plurality of first silencing plates and a plurality of second silencing plates rotatingly connected to the top of the second silencing shell or the top of the third silencing shell; a second rotating shaft penetrating one side of the top of the second silencing shell or the top of the third silencing shell is fixed to one side of the first silencing plate, and a third rotating shaft penetrating one side of the top of the second silencing shell or the top of the third silencing shell is fixed to one side of the second silencing plate; a fourth gear is fixedly sleeved on each of the plurality of second rotating shafts at the top, and a fifth gear is fixedly sleeved on each of the plurality of third rotating shafts at the top; a first belt is movably sleeved on two adjacent second rotating shafts, and a second belt is movably sleeved on two adjacent third rotating shafts; the plurality of fourth gears at the top are engaged with the top of a rack, and the plurality of fifth gears at the top are engaged with the bottom of the rack; and a guide block fixed to the top of the second silencing shell is slidingly sleeved on the rack.

[0010] The driving structure comprises a third servo motor fixed to one side of the two inner cavities; one end of the motor shaft of one third servo motor is fixed to the end of a second rotating shaft at the top of the second silencing shell, and one end of the motor shaft of the other third servo motor is fixed to the end of a second rotating shaft at the top of the third silencing shell; an incomplete gear for adjusting the ventilation efficiency is fixed to one side of each of the plurality of fourth gears at the top of the second silencing shell; and a third gear engaged with the incomplete gear is fixedly sleeved on the end of the baffle penetrating one side of the second silencing shell.

[0011] Further, the noise reduction structure comprises a first rotating shaft fixed on one side of the inside of the first sound reduction shell, a supporting U-shaped plate is fixed on the bottom of the first rotating shaft, second fixing blocks are fixed on both sides of the supporting U-shaped plate, a second servo motor is fixed on the top of one of the second fixing blocks, a threaded rod is fixed on one end of the motor shaft of the second servo motor, a guide rod is fixed on the top of the other second fixing block, one side of a pressing U-shaped plate is sleeved with the threaded rod, and the other side of the pressing U-shaped plate is sleeved with the guide rod in a sliding mode, and a first penetrating hole is formed on the first sound reduction shell for placing the exhaust port sound reduction pipe.

[0012] Further, the noise reduction structure comprises a first rotating shaft fixed on one side of the inside of the first sound reduction shell, a supporting U-shaped plate is fixed on the bottom of the first rotating shaft, second fixing blocks are fixed on both sides of the supporting U-shaped plate, a second servo motor is fixed on the top of one of the second fixing blocks, a threaded rod is fixed on one end of the motor shaft of the second servo motor, a guide rod is fixed on the top of the other second fixing block, one side of a pressing U-shaped plate is sleeved with the threaded rod, and the other side of the pressing U-shaped plate is sleeved with the guide rod in a sliding mode, and a first penetrating hole is formed on the first sound reduction shell for placing the exhaust port sound reduction pipe.

[0013] Further, a plurality of water bags for shock absorption and sound reduction are arranged in the arc-shaped grooves of the pressing U-shaped plate and the supporting U-shaped plate.

[0014] Further, the fourth sound reduction shell is fixed on the other end of the limiting frame, and the third electric push rods are fixed on both sides of the fourth sound reduction shell.

[0015] Further, the connecting structure comprises fixing arms fixed on both sides of the fourth sound reduction shell, second wedge-shaped blocks are fixed on the fixing arms, L-shaped arms are fixed on both sides of the second ventilation sound reduction mechanism, clamping columns are fixed on one side of the end portions of the L-shaped arms, fixing plates are fixed on both sides of the first sound reduction shell, rectangular blocks are fixed on both sides of the second sound reduction shell, first springs and first telescopic rods are fixed between the fixing plates and the rectangular blocks on the same side, the first springs are movably sleeved on the first telescopic rods, second springs and second telescopic rods are fixed in the rectangular blocks, first wedge-shaped blocks movably clamped on the clamping columns are fixed to the other ends of the second springs and the second telescopic rods, the second springs are movably sleeved on the second telescopic rods, and guide grooves are formed in the rectangular blocks for sliding of the first wedge-shaped blocks.

[0016] Further in, the shock-absorbing ventilation structure includes ventilation sound-absorbing openings opened on both sides of the limiting base, a supporting plate is slidably sleeved in the limiting base, a plurality of shock-absorbing springs are fixed at the corner positions of the supporting plate, a shock-absorbing plate is fixed at one end of the shock-absorbing springs, a plurality of heat dissipation fans are fixed at the middle part of the supporting plate, and the limiting frame is fixed to the top surface of the supporting plate.

[0017] The beneficial effects of the present application are:

[0018] 1. By controlling the third servo motor, the rack can control the rotation of the fourth gear and the fifth gear, so that the included angle between the two adjacent first sound-absorbing plates and the second sound-absorbing plates can be adjusted, so that the ventilation efficiency of the first ventilation opening and the third ventilation opening is controllable, and the staggered arrangement of the plurality of first sound-absorbing plates and the second sound-absorbing plates can weaken the noise, thereby improving the noise reduction capability while ventilating;

[0019] 2. By controlling the third electric push rod, the fourth sound-absorbing shell is located in the third sound-absorbing shell and the fan is located in the second sound-absorbing shell, when the included angle between the adjacent first sound-absorbing plates and the second sound-absorbing plates is expanded to the maximum angle and the heat dissipation of the fan still cannot meet the requirements, by controlling the third servo motor, the fourth gear controls the rotation of the incomplete gear, so that the third gear rotates the baffle to be vertical, at this time, the first sound-absorbing plate and the second sound-absorbing plate are in a vertical state, air enters the inside of the second sound-absorbing shell from the plurality of second ventilation openings, thereby improving the ventilation efficiency, and further improving the heat dissipation efficiency of the fan;

[0020] 3. By controlling the first servo motor, the first electric push rod can rotate around the exhaust pipe silencer, so that the sound-absorbing cotton is wound on the exhaust pipe silencer, and then the second roller shaft is fixed to tightly wind the sound-absorbing cotton on the exhaust pipe silencer, thereby reducing the sound leakage of the exhaust pipe silencer;

[0021] 4. By controlling the third electric push rod, the second wedge-shaped block can separate the second sound-absorbing shell and the third sound-absorbing shell, and under the action of the first spring, the second sound-absorbing shell can be displaced to be located inside the second sound-absorbing shell, and the fourth sound-absorbing shell is located inside the third sound-absorbing shell, so that the fan located inside the system is exposed, thereby making it more convenient to repair or replace the fan, and improving the work efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0022] The present application will be further described below in conjunction with the drawings.

[0023] Figure 1 is a schematic diagram of the overall structure of the present application;

[0024] Figure 2 is a schematic diagram of the blower body structure in the present application;

[0025] Figure 3 is a schematic view of the bottom structure of the limiting base in the present application;

[0026] Figure 4 is a schematic view of the structure of the second ventilation and sound elimination mechanism and displacement mechanism in the present application;

[0027] Figure 5 is a schematic view of the structure of the exhaust pipe fixing mechanism in the present application;

[0028] Figure 6 is a partial enlarged view of A in Figure 5

[0029] Figure 7 is a schematic view of the structure of the first ventilation and sound elimination mechanism in the present application;

[0030] Figure 8 is a partial enlarged view of B in Figure 7

[0031] Figure 9 is a schematic view of the positional relationship between the first sound elimination plate and the second sound elimination plate in the present application;

[0032] Figure 10 is a schematic view of the structure of the displacement mechanism in the present application.

[0033] ​​In the figure: 100, support mechanism; 110, limiting base; 120, limiting frame; 130, support plate; 140, damping spring; 141, damping plate; 150, ventilation sound insulation port; 160, cooling fan; 200, exhaust pipe fixing mechanism; 210, first sound insulation shell; 211, first through hole; 220, first rotating shaft; 230, support U-shaped plate; 231, water bag; 232, first fixed block; 233, first servo motor; 234, first gear; 235, second fixed block; 236, second servo motor; 237, threaded rod; 238, guide rod; 240, pressing U-shaped plate; 250, gear ring; 251, third fixed block; 252, first electric push rod; 253, first roller shaft; 260, fixed rod; 270, second electric push rod; 271, clamping block; 280, second roller shaft; 281, second gear; 282, sound insulation cotton; 290, fixed plate; 291, first spring; 292, first telescopic rod; 300, first ventilation sound insulation mechanism; 310, second sound insulation shell; 311, first ventilation port; 312, inner cavity; 313, second ventilation port; 320, baffle; 321, third gear; 330, first sound insulation plate; 331, second rotating shaft; 332, fourth gear; 333, incomplete gear; 334, first belt; 340, second sound insulation plate; 341, third rotating shaft; 342, fifth gear; 343, second belt; 350, rack; 351, guide block; 360, third servo motor; 370, rectangular block; 371, second spring; 372, second telescopic rod; 373, first wedge-shaped block; 400, second ventilation sound insulation mechanism; 410, third sound insulation shell; 411, third ventilation port; 420, L-shaped arm; 421, clamping column; 500, displacement mechanism; 510, fourth sound insulation shell; 520, third electric push rod; 530, fixed arm; 531, second wedge-shaped block; 600, blower body. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present application will be clearly and completely described in connection with the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0035] Please refer to Figures 1-10As shown, a Roots blower with a sound attenuation structure, comprising a supporting mechanism 100, an exhaust pipe fixing mechanism 200, a first ventilation sound attenuation mechanism 300, a second ventilation sound attenuation mechanism 400, a displacement mechanism 500 and a blower body 600, the supporting mechanism 100 comprises a limiting base 110, a damping ventilation structure is arranged in the limiting base 110, a limiting frame 120 for limiting is arranged on the damping ventilation structure, the damping ventilation structure comprises ventilation sound attenuation openings 150 opened on both sides of the limiting base 110, and a supporting plate 130 is slidably sleeved in the limiting base 110, a plurality of damping springs 140 are fixed at the corner positions of the supporting plate 130, and a damping plate 141 is fixed at one end of the damping spring 140, a plurality of cooling fans 160 are fixed in the middle of the supporting plate 130, the limiting frame 120 is fixed on the top surface of the supporting plate 130, the ventilation of the external environment of the system is realized through the plurality of cooling fans 160, the vibration of the supporting plate 130 is reduced through the plurality of damping springs 140 evenly arranged at the corner of the supporting plate 130, and the sound attenuation louver structure is arranged in the ventilation sound attenuation opening 150, so as to reduce the sound leakage of noise;

[0036] Specifically, the exhaust pipe fixing mechanism 200 comprises a first sound attenuation shell 210 fixed on the inner side of one end of the limiting frame 120, and a noise reduction structure for reducing the noise leakage of the blower exhaust port sound attenuation pipe is arranged in the first sound attenuation shell 210, the noise reduction structure comprises a first rotating shaft 220 fixed on one side of the inner part of the first sound attenuation shell 210, a supporting U-shaped plate 230 is fixed at the bottom of the first rotating shaft 220, second fixed blocks 235 are fixed on both sides of the supporting U-shaped plate 230, a second servo motor 236 is fixed on the top of one of the second fixed blocks 235, a threaded rod 237 is fixed at one end of the motor shaft of the second servo motor 236, a guide rod 238 is fixed on the top of the other second fixed block 235, one side of a pressing U-shaped plate 240 is rotatably sleeved with the threaded rod 237, and the other side of the pressing U-shaped plate 240 is slidably sleeved with the guide rod 238, a first through hole 211 for placing the exhaust port sound attenuation pipe is opened on the first sound attenuation shell 210, in use, first place the exhaust sound attenuation pipe of the fan in the arc-shaped groove of the supporting U-shaped plate 230 and pass through the first through hole 211 on the first sound attenuation shell 210, at this time, control the second servo motor 236, so that the pressing U-shaped plate 240 is displaced downward to fix the exhaust sound attenuation pipe and reduce the vibration noise;

[0037] Specifically, the first ventilation sound-absorbing mechanism 300 comprises a second sound-absorbing shell 310 sleeved on the outside of the first sound-absorbing shell 210, and first ventilation openings 311 are formed at the top of the two ends of the second sound-absorbing shell 310. The second ventilation sound-absorbing mechanism 400 comprises a third sound-absorbing shell 410, and a third ventilation opening 411 is formed at the top of the one end of the third sound-absorbing shell 410 close to the first ventilation sound-absorbing mechanism 300. Connection structures for connecting the second sound-absorbing shell 310 are arranged on the two sides of the third sound-absorbing shell 410. Ventilation sound-absorbing structures for controlling the air inlet efficiency of the ventilation openings are arranged at the top of the inside of the second sound-absorbing shell 310 and the top of the inside of the third sound-absorbing shell 410. The ventilation sound-absorbing structure comprises a plurality of first sound-absorbing plates 330 and a plurality of second sound-absorbing plates 340 rotatably connected to the top of the inside of the second sound-absorbing shell 310 or the top of the inside of the third sound-absorbing shell 410. The first sound-absorbing plate 330 is fixed with a second rotating shaft 331 penetrating through one side of the top of the second sound-absorbing shell 310 or the top of the third sound-absorbing shell 410. The second sound-absorbing plate 340 is fixed with a third rotating shaft 341 penetrating through one side of the top of the second sound-absorbing shell 310 or the top of the third sound-absorbing shell 410. Fourth gears 332 are fixedly sleeved on the plurality of second rotating shafts 331 at the top. Fifth gears 342 are fixedly sleeved on the plurality of third rotating shafts 341 at the top. First belts 334 are movably sleeved on the two adjacent second rotating shafts 331. Second belts 343 are movably sleeved on the two adjacent third rotating shafts 341. The plurality of fourth gears 332 at the top are engaged with the top of a rack 350. The plurality of fifth gears 342 at the top are engaged with the bottom of the rack 350. The rack 350 is movably sleeved with a guide block 351 fixed to one side of the top of the second sound-absorbing shell 310. A plurality of second ventilation openings 313 are formed in the top of the second sound-absorbing shell 310. A plurality of baffles 320 rotatably connected to the top of the inside of the second sound-absorbing shell 310 are arranged in the plurality of second ventilation openings 313. Inner cavities 312 are formed in one side of the top of the second sound-absorbing shell 310 and one side of the top of the third sound-absorbing shell 410. Drive structures for controlling the ventilation sound-absorbing structure and the baffles 320 are arranged in the inner cavities 312. The drive structure comprises third servo motors 360 fixed to one side of the two inner cavities 312. One motor shaft of one third servo motor 360 is fixed to the end of one second rotating shaft 331 at the top of the second sound-absorbing shell 310. One motor shaft of another third servo motor 360 is fixed to the end of one second rotating shaft 331 at the top of the third sound-absorbing shell 410. Incomplete gears 333 for adjusting the ventilation efficiency are fixed to one side of the plurality of fourth gears 332 at the top of the second sound-absorbing shell 310. Third gears 321 engaged with the incomplete gears 333 are fixedly sleeved on the end of one side of the second sound-absorbing shell 310. The displacement of the rack 350 is realized by controlling the third servo motor 360.Thus, the rack 350 drives the fifth gear 342 and the fourth gear 332 to rotate, thereby controlling the rotation of the first sound-absorbing plate 330 and the second sound-absorbing plate 340. By controlling the included angle of the first sound-absorbing plate 330 and the second sound-absorbing plate 340, the ventilation rate of the first ventilation port 311 and the third ventilation port 411 can be controlled. At the same time, the included angle between the adjacent first sound-absorbing plate 330 and the second sound-absorbing plate 340 can eliminate part of the noise. When the fan cooling requirement is high and the ventilation efficiency needs to be improved, the third electric push rod 520 is controlled to make the fan located inside the second sound-absorbing shell 310. By controlling the first sound-absorbing plate 330 and the second sound-absorbing plate 340 to rotate to be gradually vertical, under the action of the incomplete gear 333, the third gear 321 controls the baffle 320 to rotate, so that the air can enter the second sound-absorbing shell 310 from the multiple second ventilation ports 313 on the second sound-absorbing shell 310, thereby improving the ventilation efficiency and the cooling efficiency.

[0038] Specifically, the displacement mechanism 500 includes a fourth muffling shell 510 sleeved in the third muffling shell 410. When the fan works normally, the fan is placed on the damping ventilation structure, and then the exhaust pipe fixing mechanism 200 is placed in the exhaust port of the fan in the noise reduction structure. At this time, the first ventilation muffling mechanism 300 is located on the exhaust pipe fixing mechanism 200, and the third electric push rod 520 is controlled to make the second ventilation muffling mechanism 400 and the first ventilation muffling mechanism 300 contact. Start the fan. When the temperature of the fan is normal, air passes through the first ventilation opening 311 in the first ventilation muffling mechanism 300 and reaches the third ventilation opening 411 from the first ventilation opening 311, thereby entering the third muffling shell 410. Due to the effect of the ventilation muffling structure arranged at the top of the second muffling shell 310 and the third muffling shell 410, the noise of the fan is reduced. When the fan temperature is high and the working noise is high, the third muffling shell 410 is displaced by the third electric push rod 520. Under the action of the connecting structure, the fan is located in the second muffling shell 310, and the fourth muffling shell 510 is located in the third muffling shell 410. At this time, the driving structure is started again, so that the baffle 320 rotates to the second ventilation opening 313 and is completely opened. At this time, air enters the second muffling shell 310 from the plurality of second ventilation openings 313, thereby improving the ventilation efficiency and accelerating the heat dissipation of the fan, thereby reducing the temperature of the fan and the noise. The ventilation efficiency of the fan during use can be adjusted by the ventilation muffling structure, and the heat dissipation efficiency of the fan can be improved when the temperature of the fan is high. When the fan needs to be overhauled and maintained, the second muffling shell 310 and the third muffling shell 410 are separated by adjusting the connecting structure, and then the third electric push rod 520 is controlled to expose the fan, thereby facilitating the maintenance and replacement of the fan. One side of the fourth muffling shell 510 is fixed in the other end of the limiting frame 120, and the other side of the fourth muffling shell 510 is fixed with one end of the third electric push rod 520. The other end of the two third electric push rods 520 is fixed to the side of the third muffling shell 410.

[0039] Specific, the connecting structure comprises the fixed arms 530 fixed on both sides of the fourth sound insulation shell 510, the second wedge block 531 fixed on the fixed arms 530, the L-shaped arms 420 fixed on both sides of the second ventilation sound insulation mechanism 400, the clamping column 421 fixed on one side of the end of the L-shaped arm 420, the fixed plates 290 fixed on both sides of the first sound insulation shell 210, the rectangular blocks 370 fixed on both sides of the second sound insulation shell 310, the first springs 291 and the first telescopic rods 292 fixed between the fixed plates 290 and the rectangular blocks 370 on the same side, the first spring 291 movably sleeved on the first telescopic rod 292, the second springs 371 and the second telescopic rods 372 fixed in the rectangular block 370, the first wedge block 373 movably clamped on the clamping column 421 fixed to the other end of the second spring 371 and the other end of the second telescopic rod 372, the second spring 371 movably sleeved on the second telescopic rod 372, the guide groove for the sliding of the first wedge block 373 is formed in the rectangular block 370, when the second sound insulation shell 310 and the third sound insulation shell 410 need to be close, the third sound insulation shell 410 is displaced to the clamping column 421 on the top of the L-shaped arm 420 on the side of the first wedge block 373 until the clamping column 421 abuts against and clamps the first wedge block 373, when the second sound insulation shell 310 and the third sound insulation shell 410 need to be separated, the fan is overhauled or replaced, the third electric push rod 520 is controlled to the fourth sound insulation shell 510 in the third sound insulation shell 410, at this time, the second wedge block 531 pushes the first wedge block 373, so that the clamping column 421 and the first wedge block 373 are no longer clamped, at this time, the first sound insulation shell 210 is in the second sound insulation shell 310 due to the action of the first spring 291, so that the second sound insulation shell 310 and the third sound insulation shell 410 are separated and the fan is exposed, and the parts are convenient to overhaul or replace.

[0040] Specific, the support U-shaped plate 230 bottom fixed with the first fixed block 232, one side of the first fixed block 232 is fixed with the first servo motor 233, the motor shaft of the first servo motor 233 is fixed with the first gear 234 at one end, the first gear 234 is engaged with the gear ring 250 rotating on the first rotating shaft 220, and the gear ring 250 is fixed with the third fixed block 251, one end of the third fixed block 251 is fixed with the first electric push rod 252, one end of the first electric push rod 252 is fixed with the first roller shaft 253, one side of the inside of the first sound elimination shell 210 is fixed with the fixed rod 260, one end of the fixed rod 260 is rotatably connected with the second roller shaft 280, one end of the second roller shaft 280 is fixed with the second gear 281, one end of the fixed rod 260 is fixed with the second electric push rod 270, one end of the second electric push rod 270 is fixed with the clamping block 271 clamped on the second gear 281, one end of the sound elimination cotton 282 is fixed on the second roller shaft 280, the other end of the sound elimination cotton 282 is fixed on the first roller shaft 253, the first gear 234 and the first electric push rod 252 are controlled to make the sound elimination cotton 282 wind on the pressing U-shaped plate 240, the support U-shaped plate 230 and the exhaust silencer, and the rotation of the second roller shaft 280 is controlled by the clamping block 271 on the top of the second electric push rod 270, so that the winding of the sound elimination cotton 282 is more firm, thereby reducing the leakage of noise, a plurality of water bags 231 for damping and sound elimination are arranged in the arc-shaped grooves of the pressing U-shaped plate 240 and the support U-shaped plate 230, by the liquid in the water bags 231, the support U-shaped plate 230 and the pressing U-shaped plate 240 further absorb the vibration kinetic energy when fixing the exhaust silencer, thereby reducing the noise.

[0041] Working principle: when in use, the fan is placed in the limiting frame 120 on the supporting plate 130, and the fan is located between the fourth sound reduction shell 510 and the first sound reduction shell 210, at this time the third electric push rod 520 is controlled, so that the fan is located in the third sound reduction shell 410 and the first sound reduction shell 210 is located in the second sound reduction shell 310, at this time the exhaust sound reduction pipe of the fan is placed in the arc-shaped groove of the supporting U-shaped plate 230 and penetrates the first penetrating hole 211 on the first sound reduction shell 210, the second servo motor 236 is controlled, so that the U-shaped plate 240 is displaced downward under the action of the rotation of the threaded rod 237, thereby fixing the exhaust sound reduction pipe, then the first electric push rod 252 is controlled to push the first roller shaft 253 away from the third fixed block 251, at this time the first servo motor 233 is controlled, the gear ring 250 is driven to rotate by the first gear 234, so that the third fixed block 251 rotates on the first rotating shaft 220, thereby making the first roller shaft 253 rotate around the side of the supporting U-shaped plate 230 or the U-shaped plate 240, when it is rotated to the appropriate position, the second electric push rod 270 is controlled to make the clamping block 271 clamped to the second gear 281, so that the second roller shaft 280 cannot rotate, at this time the first roller shaft 253 winds the sound reduction cotton 282 on the supporting U-shaped plate 230, the U-shaped plate 240 and the exhaust sound reduction pipe of the fan under the condition that the sound reduction cotton 282 is fixed at one end of the second roller shaft 280;

[0042] When the fan needs to be sound reduced when the working temperature is normal, the working of the heat dissipation fan 160 on the bottom end supporting plate 130 of the fan makes air enter the third air inlet 411 from the first air inlet 311, when the ventilation efficiency needs to be adjusted, the third servo motor 360 is controlled, so that the fourth gear 332 on one of the second rotating shafts 331 is rotated by the motor shaft of the third servo motor 360, at this time the displacement of the rack 350 engaged with the fourth gear 332 on one of the second rotating shafts 331 makes the fourth gear 332 and the fifth gear 342 rotate in opposite directions, and under the transmission action of the first belt 334 and the second belt 343, the inclination angles of the plurality of first sound reduction plates 330 and the second sound reduction plates 340 are controllable, by adjusting the included angle between a plurality of adjacent first sound reduction plates 330 and second sound reduction plates 340, the air inlet efficiency of the first air inlet 311 and the third air inlet 411 can be controlled, and the fan noise in the system can be reduced and weakened when passing through a plurality of staggered first sound reduction plates 330 and second sound reduction plates 340;

[0043] When the fan temperature is too high and the heat dissipation efficiency needs to be greatly improved, the third electric push rod 520 is controlled to make the fan located in the second sound-absorbing shell 310 and the fourth sound-absorbing shell 510 located in the third sound-absorbing shell 410, the third servo motor 360 is controlled to make the fourth gear 332 rotate to the incomplete gear 333 to drive the third gear 321 to rotate, so that the baffle 320 rotates to be vertical, and at this time, the first sound-absorbing plate 330 and the second sound-absorbing plate 340 are in a vertical state, at this time, the heat dissipation fan 160 is started to make the air enter the second sound-absorbing shell 310 from the top second air vent 313 of the second sound-absorbing shell 310, so that the ventilation efficiency is in a maximum state, thereby enhancing the heat dissipation effect;

[0044] When the fan needs to be maintained or replaced, the third electric push rod 520 is controlled to continue to displace the third sound-absorbing shell 410 to the wedge-shaped surface of the second wedge-shaped block 531 at the top end of the fixed arm 530 to contact the wedge-shaped surface of the first wedge-shaped block 373, at this time, the first wedge-shaped block 373 slides in the guide groove in the rectangular block 370 due to the pushing action of the second wedge-shaped block 531, so that the clamping column 421 is no longer clamped to the first wedge-shaped block 373, and the second sound-absorbing shell 310 is displaced to the first sound-absorbing shell 210 located in the second sound-absorbing shell 310 under the pulling action of the first telescopic rod 292, at this time, the fourth sound-absorbing shell 510 is located in the third sound-absorbing shell 410, and the fan is exposed, at this time, the maintenance or replacement of the fan is carried out.

[0045] In the description of the present specification, the description of the terms "one embodiment", "example", "specific example" and the like means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0046] The above is only an example and description of the present application, and those skilled in the art can make various modifications or supplements to the described specific embodiments or use similar ways to replace, as long as it does not deviate from the invention or exceed the scope defined by the present claims, which shall belong to the protection scope of the present application.

Claims

1. A Roots blower with a silencing structure, comprising a support mechanism, an exhaust pipe fixing mechanism, a first ventilation and silencing mechanism, a second ventilation and silencing mechanism, a displacement mechanism, and a blower body, characterized in that, The supporting mechanism includes a limiting base, a shock-absorbing and ventilation structure is provided inside the limiting base, and a limiting frame for limiting is provided on the shock-absorbing and ventilation structure. The exhaust pipe fixing mechanism includes a first silencing housing fixed to the inner side of one end of the limiting frame, and the first silencing housing is provided with a noise reduction structure for reducing the noise leakage of the blower exhaust port silencing pipe. The first ventilation and silencing mechanism includes a second silencing shell that is slidably sleeved on the outside of the first silencing shell. The top two ends of the second silencing shell are provided with first ventilation openings for ventilation. The second ventilation and silencing mechanism includes a third silencing shell. The top end of the third silencing shell near the first ventilation and silencing mechanism is provided with a third ventilation opening for ventilation. The third silencing shell is provided with connecting structures on both sides for controlling the connection of the second silencing shell. The top inner end of the second silencing shell and the top inner end of the third silencing shell are both provided with ventilation and silencing structures for controlling the air intake efficiency of the ventilation openings. The top surface of the second silencing shell is provided with multiple second ventilation openings. Each of the multiple second ventilation openings is provided with a baffle that is rotatably connected to the top inner end of the second silencing shell. The top side of the second silencing shell and the top side of the third silencing shell are both provided with an inner cavity. The inner cavity is provided with a driving structure for controlling the ventilation and silencing structure and the baffle. The displacement mechanism includes a fourth silencing housing that is slidably sleeved inside the third silencing housing; The ventilation and noise reduction structure includes multiple first noise reduction plates and multiple second noise reduction plates rotatably connected to the top of the second noise reduction housing or the top of the third noise reduction housing. A second rotating shaft is fixed to one side of the first noise reduction plate, penetrating one side of the top of the second noise reduction housing or the top of the third noise reduction housing. A third rotating shaft is fixed to one side of the second noise reduction plate, penetrating one side of the top of the second noise reduction housing or the top of the third noise reduction housing. A fourth gear is fixedly sleeved on each of the multiple second rotating shafts at the top, and a fifth gear is fixedly sleeved on each of the multiple third rotating shafts at the top. A first belt is movably sleeved on two adjacent second rotating shafts, and a second belt is movably sleeved on two adjacent third rotating shafts. The multiple fourth gears at the top mesh with the top of the rack, and the multiple fifth gears at the top mesh with the bottom of the rack. The rack is slidably sleeved with a guide block fixed to one side of the top of the second noise reduction housing. The drive structure includes a third servo motor fixed on one side of the two inner cavities. One end of the motor shaft of one third servo motor is fixed to the end of a second rotating shaft located on the top of the second silencing housing. One end of the motor shaft of the other third servo motor is fixed to the end of a second rotating shaft located on the top of the third silencing housing. Incomplete gears for adjusting ventilation efficiency are fixed on one side of a plurality of fourth gears located on the top of the second silencing housing. A third gear that meshes with the incomplete gear is fixedly sleeved on the end of the baffle that penetrates one side of the second silencing housing.

2. A Roots blower with a noise-reducing structure according to claim 1, characterized in that, The noise reduction structure includes a first rotating shaft fixed inside one side of the first silencing housing. A supporting U-shaped plate is fixed at the bottom of the first rotating shaft. Second fixing blocks are fixed on both sides of the supporting U-shaped plate. A second servo motor is fixed at the top of one of the second fixing blocks. A threaded rod is fixed at one end of the motor shaft of the second servo motor. A guide rod is fixed at the top of the other second fixing block. The threaded rod is screwed onto one side of the pressing U-shaped plate, and the other side of the pressing U-shaped plate is slidably sleeved onto the guide rod. A first through hole for placing the exhaust port silencing pipe is provided on the first silencing housing.

3. A Roots blower with a noise-reducing structure according to claim 2, characterized in that, A first fixing block is fixed to the bottom of the supporting U-shaped plate. A first servo motor is fixed to one side of the first fixing block. A first gear is fixed to one end of the motor shaft of the first servo motor. The first gear meshes with a gear ring that is rotatably sleeved on the first rotating shaft. A third fixing block is fixed to the gear ring. A first electric push rod is fixed to one end of the third fixing block. A first roller shaft is fixed to one end of the first electric push rod. A fixing rod is fixed to one side inside the first sound-absorbing housing. A second roller shaft is rotatably connected to one end of the fixing rod. A second gear is fixed to one end of the second roller shaft. A second electric push rod is fixed to one end of the fixing rod. A locking block that is movably engaged with the second gear is fixed to one end of the second electric push rod. One end of the sound-absorbing cotton is fixed to the second roller shaft. The other end of the sound-absorbing cotton is fixed to the first roller shaft.

4. A Roots blower with a noise-reducing structure according to claim 2, characterized in that, Multiple water bladders for shock absorption and noise reduction are provided in the arc-shaped grooves of the pressing U-shaped plate and the supporting U-shaped plate.

5. A Roots blower with a noise-reducing structure according to claim 1, characterized in that, One side of the fourth silencing housing is fixed to the inner side of the other end of the limiting frame. One end of the third electric push rod is fixed to both sides of the fourth silencing housing, and the other end of the two third electric push rods is fixed to the side of the third silencing housing.

6. A Roots blower with a noise-reducing structure according to claim 1, characterized in that, The connecting structure includes fixed arms fixed to both sides of the fourth silencing housing, with a second wedge block fixed on the fixed arm. L-shaped arms are fixed to both sides of the second ventilation silencing mechanism, and a locking post is fixed to one end of the L-shaped arm. Fixed plates are fixed to both sides of the first silencing housing, and rectangular blocks are fixed to both sides of the second silencing housing. A first spring and a first telescopic rod are fixed between the fixed plate and the rectangular block on the same side, and the first spring is movably sleeved on the first telescopic rod. One end of the second spring and one end of the second telescopic rod are fixed inside the rectangular block, and the other end of the second spring and the other end of the second telescopic rod are fixedly connected to a first wedge block that is movably locked on the locking post. The second spring is movably sleeved on the second telescopic rod. A guide groove for sliding of the first wedge block is opened inside the rectangular block.

7. A Roots blower with a noise-reducing structure according to claim 1, characterized in that, The vibration damping and ventilation structure includes ventilation and noise reduction openings on both sides of the limiting base, and a support plate is slidably sleeved inside the limiting base. Multiple damping springs are fixed at the corners of the support plate, and a damping plate is fixed at one end of each damping spring. Multiple cooling fans are fixed in the middle of the support plate, and the limiting frame is fixed to the top surface of the support plate.

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