CN104500426A - Energy-saving high-speed blower - Google Patents

Abstract

The invention belongs to the technical field of air blowers, and particularly relates to an energy-saving high-speed air blower which comprises a base, a motor, an assembly body with an air inlet and an air outlet, an impeller, a fixing plate, a small belt pulley, a large belt flywheel and a belt. Compared with the prior art, the high-speed increasing system adopting the belt pulley can greatly improve the rotating speed of the impeller, and has small resistance and extremely low energy loss; the invention also has the characteristics of high pressure and large flow.

Description

Energy-saving high-speed blower

technical field

The invention belongs to the technical field of air blowers, in particular to an energy-saving high-speed air blower with high pressure and large flow.

Background technique

At present, blowers on the market are roughly divided into two categories, one is low-pressure fans (below 5kpa), and the other is high-pressure fans (above 5kpa). Their common features are high energy consumption, low energy conversion rate, and poor use effect.

In industrial production, it is often necessary to use high-pressure and large-flow blowers to improve the efficiency of industrial production. However, the use of blowers currently on the market consumes a lot of energy. The huge energy consumption causes huge electricity bills for enterprises, resulting in production The cost increases, which forces the profits of enterprises to decline and lose their market competitiveness; Staggered peak power consumption seriously affects the normal production of enterprises and also has a huge impact on our daily life.

In addition, the blower in the prior art generally uses gear transmission, which requires it to be equipped with a frequency converter, which is expensive and makes the volume larger. In addition, the failure rate of the gear transmission is relatively high.

In view of this, it is necessary to provide an energy-saving high-speed blower with high pressure, large flow and small volume.

Contents of the invention

The object of the present invention is to provide an energy-saving high-speed blower with high pressure, large flow and small volume in view of the deficiencies in the prior art.

In order to achieve the above object, the present invention adopts following technical scheme:

An energy-saving high-speed blower includes a base, a motor, an assembly with air inlet and outlet, an impeller, a fixed plate, a small pulley, a large belt flywheel and a belt, the motor is installed on the base, the output shaft of the motor is connected to the large Belt flywheel connection, one end of the assembly is provided with a connecting shaft, the impeller is placed in the assembly and connected to one end of the connecting shaft, the other end of the connecting shaft is connected to the small pulley, the The large belt flywheel is installed on the output shaft of the motor, and the belt is surrounded by the large belt flywheel and the small pulley.

As an improvement of the energy-saving high-speed blower of the present invention, a tensioning wheel is also arranged on the fixed plate, the tensioning wheel is arranged on the outside of the belt and contacts the belt, and the tensioning wheel is also passed through Connect with the fixed plate.

As an improvement of the energy-saving high-speed blower of the present invention, the blower further includes a filter core connected to the air inlet of the assembly.

As an improvement of the energy-saving high-speed blower of the present invention, a fixing frame is arranged between the assembly body and the fixing plate, and a pulley fixing seat is arranged between the motor and the large belt flywheel.

As an improvement of the energy-saving high-speed blower of the present invention, a shock-absorbing pad is arranged between the base and the motor.

As an improvement of the energy-saving high-speed blower of the present invention, the fixed plate is also connected with a belt guard, and the fixed plate and the belt guard jointly form an accommodating space for accommodating the large pulley, the small pulley and the belt.

As an improvement of the energy-saving high-speed blower of the present invention, the assembly body is also provided with a flange plate, an inner sleeve, a bearing lining column, a first bearing, a second bearing, a bearing preload disc spring, a first oil seal and a second An oil seal, the flange is arranged on the bearing supporting column, and the flange is arranged between the impeller and the first oil seal, and the impeller is located between the flange and the assembly between the covers, and make the arc surface of the impeller coincide completely with the arc surface of the cover, one end of the inner sleeve supports the impeller through the oil seal inner ring and connects the first bearing with the impeller Locking, the other end of the inner sleeve withstands the outer ring of the second bearing, and the outer ring of the second oil seal firmly presses the outer ring of the second bearing to form a fixed end of the bearing, the connection One end of the shaft passes through the inner sleeve and is connected to the inner ring of the second bearing, and the connecting shaft is also pressed against the inner ring of the second bearing through the small pulley, and finally the M8 anti-thread nut is used to screw the inner ring of the second bearing The small pulley is locked, and the outer ring of the first bearing is also covered with an O-ring to prevent the bearing from creeping when the fan is running at high speed for a long time, and greatly prolong the service life of the bearing;

An inner sleeve for preventing displacement is provided between the first bearing and the second bearing on the connecting shaft, and the inner sleeve is fixed in the middle of the bearing seat hole from the inside to the outside by a machine screw. A butterfly-shaped spring washer is arranged between a bearing and the inner sleeve, and the first bearing is installed on one end of the connecting shaft to press the butterfly spring, and a pre-tightening force is applied to make the bearing rigid and ensure that the axis will not The second oil seal is arranged between the second bearing and the small pulley.

As an improvement of the energy-saving high-speed blower of the present invention, the impeller is made of aviation aluminum alloy material. Several blades extending from the edge of the impeller main body, the blades include a curved section and a straight section, one end of the curved section is connected to the edge of the central hole of the impeller main body, and the other end of the curved section is connected to the One end of the straightening section is connected, the other end of the straightening section is connected with the edge of the impeller main body, the height of the curved section is greater than the height of the straightening section, and the height of the straightening section is greater than that of the One end connected with the curved section gradually decreases toward the end connected with the edge of the impeller main body, and the curved surface of the curved section completely coincides with the curved surface of the cover of the assembly.

As an improvement of the energy-saving high-speed blower of the present invention, the front end of the small pulley is provided with a milling and flattening structure. One of the functions of this structure is to produce an air-cooling effect during high-speed operation, and the other is to facilitate fixing with a wrench during assembly, thereby locking The screws at both ends of the connecting shaft are tightened, and the small pulley is fixedly connected with the connecting shaft through a locking screw, and the locking screw has a reverse tooth structure.

Compared with the prior art, the present invention adopts a unique belt flywheel high-speed speed-up system to increase the speed of the motor (2950 rpm) to 13,000-284,00 rpm through the high-speed belt and pulleys with small resistance , the energy loss is extremely low, which is only half or even one-third of the traditional high-pressure fan; when the impeller rotates at high speed in the assembly, it beats the air molecules, so that the air molecules follow the high-speed rotation of the impeller and pop out from the air outlet. Because the impeller is very fast, The air molecules in the front have no time to pop out, and there is a steady stream of air molecules in the back to replenish and accumulate and compress, which produces a strong, high-speed airflow, which also drives the internal air of the assembly (the impeller rotates at high speed and friction The air is accompanied by heat generation and heat energy), and is sprayed outward through the air outlet, which achieves a super large flow rate (flow amplification effect).

The belt flywheel speed-up system in the present invention is not only practical, but also has lower manufacturing cost (one-twentieth) and lower failure rate than the gear speed-up systems currently on the market. Moreover, compared with the traditional high-pressure blower, the present invention not only can achieve the same pressure, but also has a wind speed of 250m/s, replacing compressed air for drying wires and cables, removing moisture, dust and other operations, and its energy-saving effect is even greater. Reach more than 90%. In addition, since the friction between the air and the high-speed rotating impeller naturally generates heat (55-60°C), there is no need for electric heating wires to generate heat (saving heating power of 10-20KW), and the hot air blown out is more conducive to drying the moisture on the surface of the workpiece, so The invention not only saves energy, but also can achieve better drying effect than the traditional blower.

In the present invention, the motor and the assembly are separated, so when the motor and the assembly fail, quick maintenance can be carried out within 15 minutes without affecting normal production operations.

Description of drawings

Fig. 1 is a schematic diagram of an exploded structure of the present invention.

Fig. 2 is a schematic diagram of the three-dimensional structure of the present invention (the belt protective cover is removed).

Fig. 3 is a schematic side view of the structure of the present invention.

Fig. 4 is a schematic diagram of the three-dimensional structure of the impeller in the present invention.

Fig. 5 is a schematic diagram of the internal structure of the assembly in the present invention.

Among them, 1-base, 2-motor, 3-assembly, 4-impeller, 5-fixed plate, 6-small pulley, 7-big belt flywheel, 8-belt, 9-connecting shaft, 10-tensioner, 11-spring, 12-filter element, 13-fixed frame, 14-fixed seat with wheels, 15-with shock pad, 16-belt guard, 17-flange, 22-inner sleeve, 23-first Bearing, 24-second bearing, 25-first oil seal, 26-second oil seal, 27-O ring, 28-inner sleeve, 29-machine meter screw, 30-butterfly spring washer, 31-air outlet, 32 -cover, 41-impeller body, 42-central hole, 43-blade, 431-curved section, 432-straightening section, 51-first through hole, 52-second through hole, 60-second groove, 61 - milled flat structure, 81 - first groove.

Detailed ways

The present invention and its beneficial effects will be further described in detail below in conjunction with specific examples, however, the specific embodiments of the present invention are not limited thereto.

As shown in Figures 1 to 5, an energy-saving high-speed blower provided by the present invention includes a base 1, a motor 2, an assembly 3 with an air inlet and an air outlet 31, an impeller 4, a fixed plate 5, a small pulley 6, and a large belt The flywheel 7 and the belt 8, the motor 2 is installed on the base 1, the output shaft of the motor 2 is connected with the large belt flywheel 7, one end of the assembly 3 is provided with a connecting shaft 9, the impeller 4 is placed in the assembly 3 and connected to the connecting shaft 9 One end of connecting shaft 9 is connected with the small pulley 6, and the big belt flywheel 7 is installed on the output shaft of the motor 2, and the belt 8 is surrounded by the big belt flywheel 7 and the small pulley 6. The fixed plate 5 is provided with a first through hole 51 through which the output shaft of the power supply motor 2 passes and a second through hole 52 passed through for the small pulley 6. The assembly 3 and the motor 2 are installed on the same side of the fixed plate 5. Belt flywheel 7, small pulley 6 and belt 8 are installed on the other side of fixed plate 5. The side of the belt 8 close to the large belt flywheel 7 and the small pulley 6 is provided with a first groove 81, and the outer surface of the large belt flywheel 7 and the small pulley 6 is also provided with a second groove matching the first groove 81 60, so that the belt 8 is not easy to come off from the large belt flywheel 7 and the small pulley 6. The diameter ratio of the large belt flywheel 7 and the small pulley 6 is (4-8):1.

The fixed plate 5 is also provided with a tensioner 10, the tensioner 10 is arranged outside the belt 8 and contacts with the belt 8, and the tensioner 10 is also connected with the fixed plate 5 by a spring 11, the setting of this structure can prevent the belt 8 from It shrinks and slips when worn, which improves its service life, and can ensure the continuous operation of the blower for 24 hours without any refueling maintenance.

The blower also includes a filter core 12, which is connected to the air inlet of the assembly 3. The filter core 12 can filter out particles such as dust in the air, improve the purity of the air blown from the blower, and also prevent the air from The damage caused by the particles hitting the impeller 4 and other components at high speed.

A fixed frame 13 is arranged between the assembly body 3 and the fixed plate 5, which facilitates the connection and fixation of the assembly body 3 and the fixed plate 5, and its shape is circular; a pulley fixing seat 14 is arranged between the motor 2 and the large belt flywheel 7 , to facilitate the installation of the large belt flywheel 7, the pulley holder 14 is provided with a third through hole 141 for the output shaft of the motor 2 to stretch out.

A shock-absorbing pad 15 is arranged between the base 1 and the motor 2, so as to reduce the impact of the vibration during the operation of the motor 2 on the entire blower.

Fixed plate 5 is also connected with belt protective cover 16, and fixed plate 5 and belt protective cover 16 form the accommodating space that accommodates large belt flywheel 7, small pulley 6 and belt 8 jointly, makes large belt flywheel 7, small pulley 6 and belt 8 is surrounded in this accommodating space, prevents the large belt flywheel 7 of high-speed rotation, small belt pulley 6 and belt 8 from causing potential safety hazards to operators. Preferably, the belt guard 16 is provided with ventilation holes or ventilation strips to improve its heat dissipation performance.

The assembly 3 is also provided with a flange 17, an inner sleeve 22, a bearing lining column, a first bearing 23, a second bearing 24, a bearing preload disc spring, a first oil seal 25 and a second oil seal 26, and the flange 17 is sleeved on the bearing lining column, and the flange 17 is arranged between the impeller 4 and the first oil seal 25, the impeller 4 is located between the flange 17 and the cover 32 of the assembly 3, and the arc surface of the impeller 4 It completely coincides with the arc surface of the cover 32, one end of the inner sleeve 22 withstands the impeller 4 through the oil seal inner ring and locks the first bearing 23 and the impeller 4, and the other end of the inner sleeve 22 withstands the outer surface of the second bearing 24. ring, and the outer ring of the second oil seal 26 firmly presses the outer ring of the second bearing 24 to form a fixed end of the bearing. One end of the connecting shaft 9 is installed with the first bearing 23 to press the butterfly spring 30 and apply a pre-tightening force so that The bearing obtains rigidity to ensure that the shaft center will not move, and one end of the connecting shaft 9 passes through the inner sleeve 22 to connect with the inner ring of the second bearing 24, and the connecting shaft 9 also presses the inner ring of the second bearing 24 through the small pulley 6. Finally, the small pulley 6 is locked with an M8 anti-thread nut. The outer ring of the first bearing 23 is also covered with an O-ring to prevent the bearing from creeping when the fan is running at high speed for a long time, and greatly prolong the service life of the bearing;

An inner sleeve 28 for preventing displacement is provided between the first bearing 23 and the second bearing 24 of the connecting shaft 9, and the inner sleeve 28 is fixed in the middle of the bearing seat hole from the inside to the outside by a machine screw 29. The first bearing 23 and the inner sleeve A butterfly spring washer 30 is arranged between the sleeves 28 , and the second oil seal 26 is arranged between the second bearing 24 and the small pulley 4 .

Among them, the first oil seal 25 and the second oil seal 26 are mechanical components used to seal oil, which isolate the parts that need to be lubricated in the transmission parts (connecting shaft 9 ) from the output parts, so that the lubricating oil will not leak.

The impeller 4 is made of aviation aluminum alloy material, which can withstand high-speed rotation without bursting, and because of its light weight, the driving torque needs to be small, and a large belt flywheel with a small pulley can be used to achieve high speed and obtain high air volume. High wind pressure and high wind speed.

The impeller 4 includes an impeller main body 41 and a plurality of blades 43 that are arranged on one surface of the impeller main body 41 and extend from the central hole 42 of the impeller main body 41 to the edge of the impeller main body 41. The blades 43 include a curved section 431 and a straight section 432, One end of the curved section 431 is connected to the edge of the center hole 42 of the impeller main body 41, the other end of the curved section 431 is connected to one end of the straight section 432, and the other end of the straight section 432 is connected to the edge of the impeller main body 41, and the curved section 431 The height of the straight section 432 is greater than the height of the straight section 432, and the height of the straight section 432 gradually decreases from the end connected with the curved section 431 to the end connected with the edge of the impeller main body 41. The impeller 4 of this structure conforms to the three-dimensional flow principle and can form a large air volume. The curved surface of the curved section 431 completely coincides with the curved surface of the cover 32 of the assembly 3 .

The front end of the small pulley 6 is provided with a milling and flattening structure 61. The milling and flattening structure 61 is used for positioning the wrench on the one hand, and on the other hand, produces a fan cooling effect when rotating at a high speed. For the small pulley 6 and the second bearing 24 The heat dissipation and cooling of other positions play a very critical role. In actual use, the temperature of the belt 8 is kept in the range of 50-60°C, and the belt 8 itself can withstand a high temperature of 120°C. Therefore, the cooling and heat dissipation of the milled flat structure 61 The effect can ensure that the belt 8 has a longer service life; and the small pulley 6 is fixedly connected with the connecting shaft 9 through a locking screw, and the locking screw has a reverse tooth structure, which is opposite to the direction of rotation of the small pulley 6, and the more it turns The tighter it is, it will not loosen and affect the normal operation of the blower.

The invention adopts a unique belt pulley high-speed speed-up system, which can speed up the speed of the motor 2 (2950 rpm) to 13,000-284,00 rpm, with small resistance and extremely low energy loss. half or even a third of the

When in use, turn on the motor 2, the motor 2 drives the large belt flywheel 7 to rotate, and then drives the belt 8 and the small pulley 7 to rotate, and the small pulley 7 drives the impeller 4 to rotate, and the impeller 4 beats the air molecules when rotating at high speed in the assembly 3, so that The air molecules rotate at high speed with the impeller 4 and pop out from the air outlet 31. Because the speed of the impeller 4 is very fast, the air molecules in the front have no time to pop out, and the air molecules in the back are filtered by the filter element 12 and replenished into the assembly. Inside 3, stacking and compression occurs, which produces a strong, high-speed airflow, which also drives the internal air of assembly 3 to be sprayed outward through the air outlet, which achieves a super large flow rate (flow amplification effect) .

The belt speed-up system in the present invention is not only practical, but also has lower manufacturing cost (one-twentieth) and lower failure rate than the gear speed-up system currently on the market. Moreover, compared with the annular high-pressure fan, the present invention not only can achieve the same pressure, but also has a wind speed of 250m/s, replacing compressed air for drying wires and cables, removing moisture, dust, etc., and its energy-saving effect is even greater. Reach more than 90%. In addition, due to the natural heat generated by the friction between the air and the high-speed rotating impeller (55°C-60°C), there is no need for electric heating wires to generate heat (saving heating power 10KW-20KW), and the hot air blown out is more conducive to drying the moisture on the surface of the workpiece , so the present invention not only saves energy, but also can achieve better effects than before.

For example, a 5.5KW annular high-pressure blower has a maximum flow rate of 530 cubic meters per hour and a pressure of about 30kpa. A 5,000 bottle/hour liquor filling production line needs to install three 5.5KW annular high-pressure blowers for filling Only when the water in the bottle is dried can the labeling work be completed smoothly, the power consumption is 5.5KW×3=16.5KW; while the speed of the impeller 4 of the present invention can reach between 13,000-284,00 rpm, This directly produces high-intensity wind pressure (up to 29kpa), and the lowest energy consumption, which is only half or even one-third of the annular high-pressure fan. The maximum flow rate of a 7.5KW air blower of the present invention is 1700 cubic meters per hour, which is three times that of the traditional annular high-pressure air blower. A 7.5KW air blower of the present invention can completely replace three 5.5KW annular high-pressure air blowers. While saving 9KW per hour, the production efficiency is increased to 20,000 bottles per hour, which is 3~4 times of the original production efficiency.

The invention enables customers to recover all investment costs in a short period of time, and occupies a favorable market competitive advantage. For example, the current 40,000-bottle/h production line of Guangzhou Zhujiang Beer Group uses an Italian drying system to dry the water in the bottle so that the labeling work can be completed smoothly. The power consumption is 30KW. After our on-site inspection and on-site In the test, our 7.5KW energy-saving high-speed blower can replace the drying effect of the original 30KW drying system, saving 22.5KW per hour, calculated according to the production time provided by Zhujiang Beer Group: 22.5KW×20 hours/day×30 days/month × 12 months/year = 162000KW, calculated according to the electricity price of 1 yuan per kilowatt-hour, saving 162,000 yuan in electricity costs a year, and the investment only needs to save about a quarter of the total electricity costs, which means that the company can recover all costs within 3 months .

According to the disclosure and teaching of the above specification, those skilled in the art to which the present invention pertains can also make appropriate changes and modifications to the above embodiment. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and changes to the present invention should also fall within the protection scope of the claims of the present invention. In addition, although some specific terms are used in this specification, these terms are only for convenience of description and do not constitute any limitation to the present invention.

Claims (9)

1. energy-saving and high-speed blower, it is characterized in that: comprise base, motor, there is the assembly of inlets and putlets of ventilation, impeller, fixed plate, small belt pulley, large belt flywheel and belt, described motor is installed on described base, the output shaft of described motor is connected with described large belt flywheel, one end of described assembly is provided with coupling shaft, described impeller to be placed in described assembly and to be connected with one end of described coupling shaft, the other end of described coupling shaft is connected with described small belt pulley, described large belt flywheel is installed on the force-output shaft of described motor, described belt is located on described large belt flywheel and described small belt pulley.

2. energy-saving and high-speed blower according to claim 1, it is characterized in that: described fixed plate is also provided with expansion tightening wheel, described expansion tightening wheel be arranged at described belt outer and with described belt contacts, and described expansion tightening wheel is also connected with described fixed plate by spring.

3. energy-saving and high-speed blower according to claim 1, it is characterized in that: described blower also comprises filtration core, described filtration core is connected with the intake grill of described assembly.

4. energy-saving and high-speed blower according to claim 1, is characterized in that: be provided with fixing frame between described assembly and described fixed plate, is provided with belt wheel fixed base between described motor and described large belt flywheel.

5. energy-saving and high-speed blower according to claim 1, is characterized in that: be provided with beam between described base and described motor.

6. energy-saving and high-speed blower according to claim 1, is characterized in that: described fixed plate is also connected with belt hood, and described fixed plate and described belt hood form the containing space for accommodating large belt flywheel, small belt pulley and belt jointly.

7. energy-saving and high-speed blower according to claim 1, it is characterized in that: in described assembly, be also provided with flange plate, inner sleeve, bearing sets off post, clutch shaft bearing, second bearing, bearing pre-tightened disc spring, first oil sealing and the second oil sealing, described flange plate is sheathed on described bearing and sets off on post, and described flange plate is arranged between described impeller and described first oil sealing, described impeller is between described flange plate and the lid of described assembly, and the cambered surface of described impeller is overlapped completely with the cambered surface of described lid, one end of described inner sleeve is withstood described impeller by oil sealing inner ring and described clutch shaft bearing and described impeller is locked, the other end of described inner sleeve withstands the outer ring of described second bearing, and the outer ring of described second bearing is firmly pushed down in described second oil sealing outer ring, form bearing fixed end, one end of described coupling shaft is connected with described second bearing inner race through described inner sleeve, and described coupling shaft also compresses the inner ring of described second bearing by described small belt pulley, finally use anti-tooth nut by locked for described small belt pulley, the outer ring of described clutch shaft bearing is also arranged with O shape circle,

Be provided with between the described clutch shaft bearing of described coupling shaft and described second bearing for preventing the inner sleeve be shifted, described inner sleeve is fixed in the middle of bearing saddle bore by interior outward by machine-processed rice screw, butterfly bullet pad is provided with between described clutch shaft bearing and described inner sleeve, described clutch shaft bearing is installed to push down described butterfly spring in one end of described coupling shaft, and described second oil sealing is arranged between described second bearing and described small belt pulley.

8. energy-saving and high-speed blower according to claim 1, it is characterized in that: described impeller adopts aviation aluminum alloy material to make, described impeller comprise impeller bodies and be arranged at described impeller bodies a surface on and from the center hole of described impeller bodies to several blades that the edge of described impeller bodies extends, described blade comprises bending section and the section of stretching, the edge conjunction of one end of described bending section and the center hole of described impeller bodies, the other end of described bending section is connected with one end of the described section of stretching, the other end of the described section of stretching and the edge conjunction of described impeller bodies, the height of the section of stretching described in the height of described bending section is greater than, the height of the described section of stretching reduces gradually from the one end be connected with described bending section to one end of the edge conjunction with described impeller bodies, the cambered surface of described bending section overlaps completely with the cambered surface of the lid of described assembly.

9. energy-saving and high-speed blower according to claim 1, is characterized in that: the front end of described small belt pulley is provided with the flat structure of milling, and described small belt pulley is fixedly connected with described coupling shaft by locking nut, and described locking nut has anti-dental structure.