CN217002318U

CN217002318U - Integrated double-head high-speed centrifugal blower

Info

Publication number: CN217002318U
Application number: CN202220837608.XU
Authority: CN
Inventors: 李敏; 范存勇
Original assignee: Liaoning Telaizi Environmental Protection Equipment Manufacturing Co
Current assignee: Liaoning Telaizi Environmental Protection Equipment Manufacturing Co
Priority date: 2022-03-22
Filing date: 2022-04-12
Publication date: 2022-07-19
Anticipated expiration: 2032-04-12

Abstract

The utility model discloses an integrated double-head high-speed centrifugal blower, which solves the problem that a low-power motor of the blower cannot deliver air volume in an over-power mode, and the technical scheme is as follows: including main motor, main motor both ends all are provided with the ring gear, and the ring gear is connected with high-speed rotor group, high-speed rotor group includes impeller and gear shaft, the impeller passes through the gear shaft and is connected with the ring gear, ring gear and high-speed rotor group are provided with the casing outward, the casing is installed and is admitted air the shell, through adopting two high-speed rotor group structures, under the condition that does not increase impeller pressure ratio, through the mode of two impeller synchronous working, the effectual unit amount of wind that has improved has solved the unable super power of low-power motor and has carried the problem of the amount of wind.

Description

Integrated double-head high-speed centrifugal blower

Technical Field

The utility model belongs to the technical field of blowers, in particular to an integrated double-head high-speed centrifugal blower.

Background

Centrifugal blower assemblies are used in a wide variety of industrial applications, and play a vital role in industrial settings. The rotation of the impeller applies work to the gas to increase the pressure of the gas, thereby meeting the requirements of the process flow.

In a centrifugal blower unit, a motor is generally used as a drive, a gear box is driven by the motor, a volute is suspended outside the gear box, and an impeller is mounted on a high-speed shaft of a gear box. Due to the arrangement structure, a longer mechanical transmission distance and a larger number of mechanical transmission stages exist, and more energy consumption is lost in the mechanical transmission process.

The design structure is high in manufacturing cost and complex in structure, and meanwhile, due to the fact that the centrifugal blower is limited in impeller pressure ratio and motor power, when large air volume is needed, the power of a driving machine needs to be increased, or multiple units are adopted to work in a combined mode. For the traditional electrically-driven split centrifugal blower unit, the energy consumption of auxiliary equipment is high, the complexity of the system is increased, and the overall reliability of the unit is affected.

Disclosure of Invention

Aiming at the defects in the prior art, the utility model aims to provide a small integrated double-head high-speed centrifugal blower to solve the problem that a low-power motor cannot convey air volume in an over-power mode due to the fact that the pressure ratio of an impeller and the power of the motor are limited.

The purpose of the utility model is realized as follows: the utility model provides an integrated form duplex head high speed centrifugal blower, includes main motor, main motor both ends all are provided with the ring gear, and the ring gear is connected with high-speed rotor group, high-speed rotor group includes impeller and gear shaft, the impeller passes through the gear shaft and is connected with the ring gear, ring gear and high-speed rotor group are provided with the casing outward, the casing is installed and is admitted air the shell.

Further, the casing is of an integrated structure, the casing comprises a volute and a gearbox, the air inlet casing is installed in the volute, the toothed ring and the gear shaft are installed in the gearbox, the air inlet casing is of an integrated structure and comprises an end cover plate, a fixing frame, a ring and a diffuser, the ring is connected with the cover plate through the fixing frame, a volute flow channel is formed between the air inlet casing and the volute, and the diffuser is located in the volute flow channel.

Furthermore, an oil cavity is formed in the top of the machine shell, an oil filling opening matched with the gear shaft and the gear ring is formed in the oil cavity, an oil bin is arranged at the bottom of the gearbox in the machine shell, the oil bin and the oil cavity are communicated through an oil guide pipe, and the oil guide pipe is connected with an oil guide pump and a cooler.

The cooler is characterized by further comprising a base and a support, wherein the support is arranged on the side face of the base, the main motor is arranged on the base, the cooler is arranged on the support, and bottom feet are arranged at the bottom of the base.

Further, an oil heater is arranged in the oil bin.

Further, main motor and ring gear between be provided with the end plate, the casing is connected with the end plate, the end plate outside is installed oil seal cover, motor oil seal, sealed cowling and oil removal cover in proper order.

Further, a bearing seat is arranged in the casing, the gear shaft is installed on the bearing seat through a supporting and pushing bearing, an air seal is arranged between one end, close to the impeller, of the gear shaft and the casing, an oil seal is arranged on one side, far away from the impeller, of the air seal, a back plate seal is arranged on one side, close to the impeller, of the air seal, and the back plate seal is installed in the casing.

Further, an air inlet and an air outlet are formed in the position, between the air seal and the oil seal, of the machine shell, and the air inlet is communicated with a negative pressure fan.

Furthermore, a hydraulic pull rod is arranged at the end part of the gear shaft, the impeller is connected with the gear shaft through the hydraulic pull rod, a shaft head nut and a fairing are installed on the outer side of the impeller, and the fairing is fixed through a locking nut.

Compared with the prior art, the utility model has the outstanding and beneficial technical effects that:

1. the two air blowing main machines share one main motor and share a plurality of parts of auxiliary machine accessories, so that the air quantity of the unit is effectively improved, and the energy consumption is effectively reduced;

2. the structure is simple and compact, the oil bin is arranged in the shell, an external oil storage tank is not required to be arranged, the space is saved, and meanwhile, the moving parts are few, so that the operation cost is low;

3. the centrifugal unit has good integral sealing effect, less influence on the heat transfer effect of the heat exchanger and higher efficiency;

4. the design has few easily-damaged parts, is convenient to overhaul and has reliable operation;

5. the two hosts can be designed into the same flow type or the large and small flow type according to different working conditions, so that the application range is wider;

in conclusion, the small integrated double-head high-speed centrifugal blower provided by the utility model solves the problem that a low-power motor cannot deliver air volume in an over-power mode due to the limitation of the pressure ratio of an impeller and the power of the motor.

In addition, a water cooling system is applied to the auxiliary equipment, so that constant-temperature, constant-flow and constant-pressure cooling water can be provided for the oil cooler, the temperature of lubricating oil of the unit can be controlled, an accurate constant-temperature working environment is provided for the unit to operate, the energy consumption of the system is further reduced, the complexity of the system is reduced, and the overall reliability of the unit is improved.

Drawings

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

FIG. 2 is a cross-sectional view of the present invention;

FIG. 3 is a side view of the present invention;

FIG. 4 is a schematic view of the housing structure of the present invention;

FIG. 5 is a schematic view of the inlet casing structure of the present invention;

FIG. 6 is an enlarged view of a portion of the structure of the present invention;

FIG. 7 is a schematic view of the construction of the impeller portion of the present invention;

fig. 8 is a partial structural schematic diagram of the main motor of the present invention.

In the figure: 1. a main motor; 2. a toothed ring; 3. an impeller; 4. a gear shaft; 5. a housing; 6. an air inlet housing; 7. a cooler; 8. a cold water pipe; 9. an oil heater; 10. an oil inlet pipe; 11. a base; 12. a support; 13. a footing; 14. an end plate; 15. an oil enclosure; 16. sealing motor oil; 17. a sealing cover; 18. an oil-separating cover; 19. a volute; 20. a gearbox; 21. an end cover plate; 22. a fixed mount; 23. a swage ring; 24. a diffuser; 25. a volute flow passage; 26. a bearing seat; 27. a support and push bearing; 28. air sealing; 29. oil sealing; 30. sealing the back plate; 31. an air inlet; 32. an air outlet; 33. a negative pressure fan; 34. a hydraulic pull rod; 35. a spindle nose nut; 36. a cowling; 37. locking the nut; 38. an oil chamber; 39. a gland; 40. a one-way valve; 41. an air inlet duct; 42. an exhaust air duct.

Detailed Description

The embodiment provides an integrated double-head high-speed centrifugal blower, which comprises a main motor 1, wherein the main motor 1 is a water-cooling double-output-shaft variable-frequency motor, an output shaft of the double-output-shaft variable-frequency motor is connected with a toothed ring 2, the toothed ring 2 is fixed by a shaft head pressing plate, an end plate 14 is arranged between the main motor 1 and the toothed ring 2, an oil sealing cover 15, a motor oil seal 16, a sealing cover 17 and an oil separating cover 18 are sequentially arranged on the outer side of the end plate 14, and the main motor 1 can be sealed by adopting a structure in which the oil sealing cover 15, the motor oil seal 16, the sealing cover 17 and the oil separating cover 18 are matched;

the gear ring 2 is connected with a high-speed rotor set, the high-speed rotor set comprises an impeller 3 and a gear shaft 4, the impeller 3 is connected with the gear ring 2 through the gear shaft 4, the end part of the gear shaft 4 is provided with a hydraulic pull rod 34, the impeller 3 is connected with the gear shaft 4 through the hydraulic pull rod 34, a spindle nose nut 35 and a fairing 36 are installed on the outer side of the impeller 3, and the fairing 36 is fixed through a locking nut 37;

a bearing seat 26 is arranged in the casing 5, the gear shaft 4 is mounted on the bearing seat 26 through a thrust bearing 27, an air seal 28 is arranged between one end of the gear shaft 4 close to the impeller 3 and the casing 5, an oil seal 29 is arranged on one side of the air seal 28 away from the impeller 3, a back disc seal 30 is arranged on one side of the air seal 28 close to the impeller 3, the back disc seal 30 is mounted in the casing 5, an air inlet 31 and an air outlet 32 are arranged at the casing 5 between the air seal 28 and the oil seal 29, the air inlet 31 is communicated with a negative pressure fan 33, the negative pressure fan 33 injects air into the space between the air seal 28 and the oil seal 29 through the air inlet 31, and redundant air is discharged through the air outlet 32, so that positive and negative pressure balance between two ends of the air seal 28 and two ends of the oil seal 29 is achieved;

a casing 5 is arranged outside the gear ring 2 and the high-speed rotor set, an air inlet casing 6 is mounted on the casing 5, the casing 5 is of an integral structure and is connected with the end plate 14, the casing 5 comprises a volute 19 and a gearbox 20, the air inlet casing 6 is mounted in the volute 19, the gear ring 2 and the gear shaft 4 are mounted in the gearbox 20, the air inlet casing 6 is of an integral structure and comprises an end cover plate 21, a fixing frame 22, a ring 23 and a diffuser 24, the ring 23 is connected with the cover plate through the fixing frame 22, a volute flow passage 25 is formed between the air inlet casing 6 and the volute 19, and the diffuser 24 is located in the volute flow passage 25; an oil cavity 38 is formed in the top of the housing 5, a gland 39 is arranged on the top of the oil cavity 38, a one-way valve 40 is mounted on the gland 39, and a closed pressure-resistant cavity is formed in the oil cavity 38 formed by the gland 39 and the one-way valve 40, so that stable oil pressure can be provided for lubricating the gearbox 20 on one hand, and lubricating oil is continuously provided when a unit fails or is powered off on the other hand, and core components are prevented from being damaged;

further, the air inlet casing 6 is communicated with an air inlet wind barrel 41, and the volute 19 is communicated with an air outlet wind barrel 42. The air exhaust direction of the machine shell 5 groups on the two sides of the main motor 1 can be designed according to the working condition.

An oil cavity 38 is formed in the top of a machine shell 5, an oil filling opening matched with a gear shaft 4 and a gear ring 2 is formed in the oil cavity 38, oil can be filled into the gear shaft 4 and the gear ring 2 for lubrication, an oil bin is arranged at the bottom of a gearbox 20 in the machine shell 5 and used for storing lubricating oil in the oil cavity, the oil bin is communicated with the oil cavity through an oil guide pipe 10, the oil guide pipe 10 is connected with an oil guide pump and a cooler 7, the cooler 7 is connected with a cold water pipe 8, the cold water pipe 8 is connected with a cold water machine for providing cold water, and the cold water machine can provide cooling water for the cooler 7 and a water-cooled dual-output-shaft variable frequency motor.

This embodiment still is provided with the support equipment, and the support equipment includes base 11 and support 12, support 12 is installed in base 11 side, main motor 1 is installed on base 11, cooler 7 is installed on support 12, base 11 bottom is provided with footing 13.

Claims

1. The utility model provides an integrated form duplex head high-speed centrifugal blower, includes main motor (1), its characterized in that, main motor (1) both ends all are provided with ring gear (2), and ring gear (2) are connected with high-speed rotor group, high-speed rotor group includes impeller (3) and gear shaft (4), impeller (3) are connected with ring gear (2) through gear shaft (4), ring gear (2) and high-speed rotor group are provided with casing (5) outward, casing (5) are installed and are admitted air shell (6).

2. The integrated dual-head high-speed centrifugal blower according to claim 1, wherein the casing (5) is of an integral structure, the casing (5) comprises a volute (19) and a gearbox (20), the air inlet casing (6) is mounted in the volute (19), the toothed ring (2) and the gear shaft (4) are mounted in the gearbox (20), the air inlet casing (6) is of an integral structure and comprises an end cover plate (21), a fixing frame (22), a ring (23) and a diffuser (24), the ring (23) is connected with the cover plate through the fixing frame (22), a volute flow passage (25) is formed between the air inlet casing (6) and the volute (19), and the diffuser (24) is located in the volute flow passage (25).

3. The integrated dual-head high-speed centrifugal blower according to claim 1, wherein an oil chamber (38) is formed in the top of the casing (5), the oil chamber (38) is provided with an oil injection port matched with the gear shaft (4) and the gear ring (2), an oil bin is formed in the bottom of a gearbox in the casing (5), the oil bin and the oil chamber are communicated through an oil guide pipe (10), and the oil guide pipe (10) is connected with an oil guide pump and a cooler (7).

4. The integrated dual-head high-speed centrifugal blower according to claim 3, further comprising a base (11) and a bracket (12), wherein the bracket (12) is installed on the side of the base (11), the main motor (1) is installed on the base (11), the cooler (7) is installed on the bracket (12), and a bottom of the base (11) is provided with a foot (13).

5. The integrated dual-head high-speed centrifugal blower according to claim 3, wherein an oil heater (9) is disposed within the oil sump.

6. The integrated double-head high-speed centrifugal blower according to claim 1, wherein an end plate (14) is arranged between the main motor (1) and the toothed ring (2), the casing (5) is connected with the end plate (14), and an oil sealing cover (15), a motor oil seal (16), a sealing cover (17) and an oil sealing cover (18) are sequentially mounted on the outer side of the end plate (14).

7. The integrated double-handpiece high-speed centrifugal blower according to claim 1, wherein a bearing seat (26) is arranged in the casing (5), the gear shaft (4) is mounted on the bearing seat (26) through a thrust bearing (27), an air seal (28) is arranged between one end of the gear shaft (4) close to the impeller (3) and the casing (5), an oil seal (29) is arranged on one side of the air seal (28) far away from the impeller (3), a back disc seal (30) is arranged on one side of the air seal (28) close to the impeller (3), and the back disc seal (30) is mounted in the casing (5).

8. The integrated double-head high-speed centrifugal blower according to claim 7, wherein an air inlet (31) and an air outlet (32) are arranged at the position of the casing (5) between the air seal (28) and the oil seal (29), and the air inlet (31) is communicated with a negative pressure fan (33).

9. The integrated double-head high-speed centrifugal blower according to claim 1, wherein a hydraulic pull rod (34) is arranged at the end of the gear shaft (4), the impeller (3) is connected with the gear shaft (4) through the hydraulic pull rod (34), a shaft head nut (35) and a fairing (36) are installed on the outer side of the impeller (3), and the fairing (36) is fixed through a locking nut (37).