Centrifugal fan support convenient to position and weld

Abstract

The utility model relates to the technical field of centrifugal fans, and discloses a centrifugal fan support convenient to position and weld, which comprises a steel tank base, a plurality of supporting legs are fixedly arranged at the lower end of the steel tank base, and a support is fixedly mounted on the upper end face of the steel tank base. Wherein a penetrating structure is adopted among the plurality of brackets, a penetrating mounting structure is also adopted between the bearing seat mounting plate and the bottom bracket, and a penetrating mounting structure, namely a tenon-and-mortise structure is also adopted between the motor mounting plate and the bottom bracket, so that the pre-assembly of the brackets before welding is simplified, the welding efficiency is improved, and the welding precision is improved; the coupling is installed on the output shaft of the motor, the coupling has the effects of transmitting power, reducing vibration, protecting the motor, reducing mechanical damage caused by different rotating speeds in the working process and the like, and therefore the service life of the device is prolonged, the coupling cover protects the coupling, and the service life of the device is prolonged. The coupling is prevented from being influenced by the outside to shorten the service life.

Description

Technical Field

[0001] The utility model relates to the technical field of centrifugal fans, in particular to a centrifugal fan bracket which is convenient for positioning and welding. Background Art

[0002] Centrifugal fans are widely used in ventilation, refrigeration and other industries. When the centrifugal fan is working, the motor drives the fan wheel to rotate at high speed, which will generate a large centrifugal force. The application products have high requirements on the dynamic balance of the fan. If the dynamic balance is not up to standard, the fan will produce a lot of vibration, damaging the fan and other related equipment; therefore, when installing the centrifugal fan, the motor of the centrifugal fan is generally installed on the bracket first, and the bracket is fixedly connected to the base plate, and then the fan wheel is connected to the motor. A wind collecting hood is provided on the base plate, and the inner end of the wind collecting hood is connected to the air inlet of the fan wheel.

[0003] At present, conventional fan brackets mostly adopt simple welding structures, which have the disadvantages of lacking positioning during welding and poor welding accuracy, which affects the overall strength of the fan bracket. Utility Model Content

[0004] 1. Technical issues to be solved

[0005] In view of the deficiencies in the prior art, the utility model provides a centrifugal fan bracket that is easy to position and weld, thereby solving the above technical problems.

[0006] (II) Technical solution

[0007] To achieve the above object, the utility model provides the following technical solutions: a centrifugal fan bracket that is easy to position and weld, comprising a steel trough base, a plurality of supporting legs are fixedly arranged at the lower end of the steel trough base, and a bracket is fixedly installed on the upper end surface of the steel trough base;

[0008] A shell is fixedly mounted on the upper end surface of the steel trough base, and an impeller is mounted inside the shell.

[0009] Preferably, a shock-absorbing pad is fixedly mounted on the lower end surface of the support leg, and a bearing seat mounting plate is fixedly mounted on the upper end of the bracket.

[0010] Through the above technical scheme, the shock-absorbing pad is made of rubber material, has high flexibility and elasticity, can effectively reduce the transmission and diffusion of vibration, and improve the stability and normal operation of the equipment. The device adopts a mortise and tenon structure, in which a plurality of brackets adopt an interlaced structure, the bearing seat mounting plate and the bottom bracket also adopt an interlaced mounting structure, and the motor mounting plate and the bottom bracket also adopt an interlaced mounting structure, that is, a mortise and tenon structure installation, thereby simplifying the pre-assembly of the bracket before welding, improving welding efficiency, and improving welding accuracy.

[0011] Preferably, a motor mounting plate is fixedly mounted on the upper end of the bracket, and a motor is fixedly mounted on the upper end surface of the motor mounting plate.

[0012] Through the above technical solution, the starting motor can drive the impeller to rotate, and the rotation of the impeller will drive the airflow to move, and the air will come in from the air inlet and be discharged from the air outlet.

[0013] Preferably, a coupling cover is fixedly provided on the upper end surface of the motor mounting plate, and the output shaft of the motor passes through the coupling cover and the housing and is fixedly mounted on the impeller.

[0014] Through the above technical solution, a coupling is installed on the output shaft of the motor, and the coupling plays the role of transmitting power, reducing vibration, protecting the motor and reducing mechanical damage caused by different speeds during operation, thereby extending the service life of the device, and the coupling cover protects the coupling and prevents the coupling from being affected by the outside world and reducing its service life.

[0015] Preferably, a coupling is installed on the output shaft of the motor, an integrated bearing seat is fixedly installed on the upper end surface of the bearing seat mounting plate, and an integrated bearing seat is arranged on the surface of the output shaft of the motor.

[0016] Through the above technical solution, the setting of the integrated bearing seat is to fix and support the motor output shaft. The integrated bearing seat is located at both ends of the shaft to ensure that a certain positional relationship is maintained between the motor output shaft and the connecting piece. The integrated bearing seat also plays a balancing role, so that the outer ring of the motor output shaft remains fixed, while the inner ring can rotate freely, consistent with the transmission direction, and in order to prevent the output shaft in the integrated bearing seat from being contaminated, the integrated bearing seat can be equipped with a sealing ring.

[0017] Preferably, a carbon ring shaft seal is installed on the output shaft of the motor, a flexible connector 1 is fixedly provided on the upper end surface of the housing, and an air outlet is provided on the upper end surface of the flexible connector 1.

[0018] Through the above technical solution, the carbon ring shaft seal can ensure that there is an appropriate gap between the moving and static parts, and at the same time prevent steam from leaking through the gap between the moving and static parts or air from the shaft end into the vacuum part of the cylinder, further improving the stability of the device.

[0019] Preferably, a second flexible connector is fixedly provided on the left end surface of the housing, an air inlet is provided on the left end surface of the second flexible connector, and a transverse plate is fixedly provided on the inner side of the bracket.

[0020] Through the above technical solution, a horizontal plate is fixedly arranged on the inner side of the bracket, which further enhances the structural stability of the device.

[0021] Compared with the prior art, the utility model provides a centrifugal fan bracket which is convenient for positioning welding and has the following beneficial effects:

[0022] 1. The utility model adopts a mortise and tenon structure, in which a plurality of brackets adopt an interlaced structure, the bearing seat mounting plate and the bottom bracket also adopt an interlaced mounting structure, and the motor mounting plate and the bottom bracket also adopt an interlaced mounting structure, that is, a mortise and tenon structure installation, thereby simplifying the pre-assembly of the bracket before welding, improving welding efficiency, and improving welding accuracy.

[0023] 2. The utility model installs a coupling on the output shaft of the motor, and the coupling plays the role of transmitting power, reducing vibration, protecting the motor and reducing mechanical damage caused by different rotation speeds during operation, thereby extending the service life of the device, and the coupling cover protects the coupling and prevents the coupling from being affected by the outside world and reducing its service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0025] Figure 2 It is a schematic diagram of the three-dimensional structure of the utility model;

[0026] Figure 3 This is a schematic diagram of the planar structure of the utility model;

[0027] Figure 4 This is a schematic diagram of the structure of the bracket of the utility model;

[0028] Figure 5 For this utility model Figure 4 The enlarged structural diagram at A;

[0029] Figure 6 This is a schematic diagram of the structure of the bracket of the utility model;

[0030] Figure 7 It is a partial three-dimensional structural schematic diagram of the utility model.

[0031] Among them: 1. Steel trough base; 2. Support legs; 3. Shockproof pads; 4. Bracket; 5. Motor; 6. Coupling cover; 7. Coupling; 8. Integrated bearing seat; 9. Air outlet; 10. Flexible connector 1; 11. Air inlet; 12. Flexible connector 2; 13. Carbon ring shaft seal; 14. Cross plate; 15. Bearing seat mounting plate; 16. Motor mounting plate; 17. Impeller; 18. Casing. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0033] Embodiment 1:

[0034] like Figure 1-7 As shown, the utility model provides a centrifugal fan bracket that is easy to position and weld, including a steel trough base 1, a plurality of supporting legs 2 are fixedly arranged at the lower end of the steel trough base 1, and a bracket 4 is fixedly installed on the upper end surface of the steel trough base 1;

[0035] A housing 18 is fixedly mounted on the upper end surface of the steel tank base 1 , and an impeller 17 is mounted inside the housing 18 .

[0036] Specifically, the lower end surface of the support leg 2 is fixedly mounted with a shockproof pad 3, and the upper end of the bracket 4 is fixedly mounted with a bearing seat mounting plate 15. The advantage is that the shockproof pad 3 is made of rubber material, has high flexibility and elasticity, can effectively reduce the transmission and diffusion of vibration, and improve the stability and normal operation of the equipment. The device adopts a mortise and tenon structure, wherein a plurality of brackets 4 adopt an interlaced structure, the bearing seat mounting plate 15 and the bottom bracket 4 also adopt an interlaced mounting structure, and the motor mounting plate 16 and the bottom bracket 4 also adopt an interlaced mounting structure, that is, a mortise and tenon structure installation, thereby simplifying the pre-assembly of the bracket 4 before welding, improving welding efficiency, and improving welding accuracy.

[0037] Specifically, the upper end of the bracket 4 is fixedly mounted with a motor mounting plate 16, and the upper end surface of the motor mounting plate 16 is fixedly mounted with a motor 5. The advantage is that starting the motor 5 can drive the impeller 17 to rotate, and the rotation of the impeller 17 drives the airflow to move, and the air will come in from the air inlet 11 and be discharged from the air outlet 9.

[0038] Specifically, the upper end surface of the motor mounting plate 16 is fixedly provided with a coupling cover 6, and the output shaft of the motor 5 penetrates the coupling cover 6 and the housing 18 and is fixedly installed with the impeller 17. The advantage is that the coupling 7 is installed on the output shaft of the motor 5, and the coupling 7 plays the role of transmitting power, reducing vibration, protecting the motor 5 and reducing mechanical damage caused by different speeds during the working process, thereby extending the service life of the device, and the coupling cover 6 protects the coupling 7 and prevents the coupling 7 from being affected by the outside world and reducing the service life.

[0039] Embodiment 2:

[0040] like Figure 1-7As shown, as an improvement on the previous embodiment. Specifically, a coupling 7 is installed on the output shaft of the motor 5, an integrated bearing seat 8 is fixedly installed on the upper end surface of the bearing seat mounting plate 15, and an integrated bearing seat 8 is arranged on the surface of the output shaft of the motor 5. The advantage is that the setting of the integrated bearing seat 8 is to fix and support the output shaft of the motor 5. The integrated bearing seat 8 is located at both ends of the shaft to ensure that a certain positional relationship is maintained between the output shaft of the motor 5 and the connecting piece. The integrated bearing seat 8 also plays a balancing role, so that the outer ring of the output shaft of the motor 5 remains fixed, while the inner ring can rotate freely, consistent with the direction of transmission, and in order to prevent the output shaft in the integrated bearing seat 8 from being contaminated, the integrated bearing seat 8 can be equipped with a sealing ring.

[0041] Specifically, a carbon ring shaft seal 13 is installed on the output shaft of the motor 5, a flexible connector 10 is fixedly provided on the upper end surface of the housing 18, and an air outlet 9 is provided on the upper end surface of the flexible connector 10. The advantage is that the carbon ring shaft seal 13 can ensure that there is an appropriate gap between the moving and static parts, and at the same time prevent steam from leaking through the gap between the moving and static parts or air from the shaft end into the vacuum part of the cylinder, further improving the stability of the device.

[0042] Specifically, the left end face of the housing 18 is fixedly provided with a second flexible connector 12, the left end face of the second flexible connector 12 is provided with an air inlet 11, and the inner side of the bracket 4 is fixedly provided with a horizontal plate 14. The advantage is that the horizontal plate 14 is fixedly provided on the inner side of the bracket 4, further enhancing the structural stability of the device.

[0043] Working principle: First, install the device, which adopts a mortise and tenon structure, in which the bracket 4 adopts an interlaced structure, the bearing seat mounting plate 15 and the bottom bracket 4 also adopt an interlaced mounting structure, and the motor mounting plate 16 and the bottom bracket 4 also adopt an interlaced mounting structure, that is, a mortise and tenon structure installation, thereby simplifying the pre-assembly of the bracket 4 before welding, improving welding efficiency, and improving welding accuracy. After installation, you need to use the device and start the motor 5. The motor 5 can drive the impeller 17 to rotate. The rotation of the impeller 17 will drive the airflow to move. The air will come in from the air inlet 11 and be discharged from the air outlet 9. The shockproof pad 3 is made of rubber material, has high flexibility and elasticity, can effectively reduce the transmission and diffusion of vibration, and improve the stability and normal operation of the equipment. A coupling 7 is installed on the output shaft of the motor 5, and the coupling 7 plays a role in transmitting power, reducing vibration, protecting the motor 5 and reducing the generation of different speeds during operation. The mechanical damage caused by the generation of the device can prolong the service life of the device, and the coupling cover 6 protects the coupling 7 to prevent the coupling 7 from being affected by the outside world and reducing its service life. The setting of the integrated bearing seat 8 is to fix and support the output shaft of the motor 5. The integrated bearing seat 8 is located at both ends of the shaft to ensure that a certain positional relationship is maintained between the output shaft of the motor 5 and the connecting piece. The integrated bearing seat 8 also plays a balancing role, so that the outer ring of the output shaft of the motor 5 remains fixed, while the inner ring can rotate freely, consistent with the direction of transmission, and in order to prevent the output shaft in the integrated bearing seat 8 from being contaminated, the integrated bearing seat 8 can be equipped with a sealing ring. The carbon ring shaft seal 13 can ensure that there is an appropriate gap between the moving and static parts, and at the same time prevent steam from leaking through the gap between the moving and static parts or air from the shaft end into the vacuum part of the cylinder, further improving the stability of the device. A cross plate 14 is fixed on the inner side of the bracket 4 to further enhance the structural stability of the device.

[0044] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A centrifugal fan support convenient for positioning welding, comprising a steel trough base (1), characterized in that: A plurality of supporting legs (2) are fixedly provided at the lower end of the steel trough base (1), and a bracket (4) is fixedly installed on the upper end surface of the steel trough base (1); A casing (18) is fixedly mounted on the upper end surface of the steel tank base (1), and an impeller (17) is mounted inside the casing (18).

2. A centrifugal fan bracket convenient for positioning welding according to claim 1, characterized in that: A shock-absorbing pad (3) is fixedly mounted on the lower end surface of the support leg (2), and a bearing seat mounting plate (15) is fixedly mounted on the upper end of the bracket (4).

3. A centrifugal fan bracket convenient for positioning welding according to claim 2, characterized in that: A motor mounting plate (16) is fixedly mounted on the upper end of the bracket (4), and a motor (5) is fixedly mounted on the upper end surface of the motor mounting plate (16).

4. A centrifugal fan support convenient for positioning welding according to claim 3, characterized in that: A coupling cover (6) is fixedly arranged on the upper end surface of the motor mounting plate (16), and the output shaft of the motor (5) passes through the coupling cover (6) and the housing (18) and is fixedly mounted on the impeller (17).

5. A centrifugal fan support convenient for positioning welding according to claim 4, characterized in that: A coupling (7) is installed on the output shaft of the motor (5), an integrated bearing seat (8) is fixedly installed on the upper end surface of the bearing seat mounting plate (15), and an integrated bearing seat (8) is provided on the surface of the output shaft of the motor (5).

6. A centrifugal fan support convenient for positioning welding according to claim 5, characterized in that: A carbon ring shaft seal (13) is installed on the output shaft of the motor (5), a flexible connector (10) is fixedly provided on the upper end surface of the housing (18), and an air outlet (9) is provided on the upper end surface of the flexible connector (10).

7. A centrifugal fan support convenient for positioning welding according to claim 6, characterized in that: A second flexible connector (12) is fixedly provided on the left end surface of the housing (18), an air inlet (11) is provided on the left end surface of the second flexible connector (12), and a transverse plate (14) is fixedly provided on the inner side of the bracket (4).

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